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1. Morphological and micro-structural interface characterization in multilayer inverted polymer-fullerene bulk heterojunction solar cells

Author

A. Jouane, Yaroslav Odarchenko, Reda Moubah, Rodrigue Lardé, H. Lassri, Guy Schmerber, Yves-Andre Chapuis, Youssef Jouane, Dimitri A. Ivanov, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Science des Matériaux de Mulhouse (IS2M), Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Institut d'Electronique du Solide et des Systèmes (InESS), Centre National de la Recherche Scientifique (CNRS), InESS, Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie (ICube), Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Les Hôpitaux Universitaires de Strasbourg (HUS)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE)

Subjects
Materials science, Renewable Energy, Sustainability and the Environment, Annealing (metallurgy), business.industry, Polymer-fullerene bulk heterojunction solar cells, Scanning electron microscope, Photovoltaic system, 02 engineering and technology, Atom probe, 010402 general chemistry, 021001 nanoscience & nanotechnology, 7. Clean energy, 01 natural sciences, Polymer solar cell, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, law.invention, law, Optoelectronics, 0210 nano-technology, business, Polyethylene naphthalate, [CHIM.OTHE]Chemical Sciences/Other
Abstract

Inverted polymer solar cells based on P3HT/PCBM bulk heterojunction were prepared on flexible polyethylene naphthalate (PEN) substrate. The effect of annealing of the PEN/ITO/ZnO multilayer and ZnO/P3HT:PCBM on the structural, morphological, photophysical and photovoltaic properties was investigated and scrutinized directly on the OPV devices using atom probe tomography (APT), scanning electron microscopy (SEM) and microfocus X-ray techniques. We carried out a 3D reconstruction of the interfaces of the multilayer containing PEN/ITO, ZnO/ITO and P3HT:PCBM/ZnO to address the interface micro-structure and its influence on the morphology of the photoactive film. The analyses show that the morphology of the interfaces is affected by the structure of each layer of the BHJ devices causing orientation of P3HT crystals with PCBM aggregates and ZnO, which in turn leads to a significant change of the charge transport across each layer and therefore photovoltaic performances.

Published
2016
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2. Influence of flexible substrates on inverted organic solar cells using sputtered ZnO as cathode interfacial layer

Author

Guy Schmerber, Aziz Dinia, Silviu Colis, Patrick Lévêque, Thomas Heiser, Youssef Jouane, Yves-Andre Chapuis, Jung, Marie-Anne, Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie (ICube), École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Les Hôpitaux Universitaires de Strasbourg (HUS)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), InESS, Centre National de la Recherche Scientifique (CNRS), and Institut d'Electronique du Solide et des Systèmes (InESS)

Subjects
Materials science, Organic solar cell, Annealing (metallurgy), 02 engineering and technology, Substrate (electronics), 7. Clean energy, 01 natural sciences, [SPI.MAT]Engineering Sciences [physics]/Materials, law.invention, Biomaterials, Sputtering, law, 0103 physical sciences, Materials Chemistry, Electrical and Electronic Engineering, Thin film, Flexible substrate, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, business.industry, Energy conversion efficiency, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Cathode, Electronic, Optical and Magnetic Materials, Sciences de l'ingénieur [physics]/Matériaux, ZnO, Interfacial engineering, Optoelectronics, 0210 nano-technology, business, Layer (electronics)
Abstract

Zinc oxide (ZnO) has recently shown to be of considerable interest for the development of interfacial buffer layers in inverted organic solar cells (OSCs). High quality ZnO thin films can indeed be prepared on large-area ITO-coated flexible substrates, using low temperature deposition techniques such as sputtering, a compatible technique with roll-to-roll process. However, further studies are still needed for a better understanding of the influence of the flexible substrate properties on the photovoltaic performances of those devices. In this work, ZnO films have been sputtered on ITO-coated flexible (PEN) substrates and annealed at different temperatures. The role of the surface morphology and the crystalline quality of ZnO films has been investigated. In the window of flexible compatible process, we found that moderate annealing temperatures of ZnO (

Published
2013
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3. FPGA-in-the-loop for control emulation of distributed MEMS simulation using VHDL-AMS

Author

Yves-Andre Chapuis, Y. Hervé, D. Casner, L. Zhou, H. Ai, and Jung, Marie-Anne

Subjects
Emulation, Computer science, business.industry, Hardware description language, Hardware-in-the-loop simulation, computer.software_genre, Hardware emulation, Behavioral modeling, Virtual machine, Embedded system, VHDL-AMS, business, Field-programmable gate array, computer, ComputingMilieux_MISCELLANEOUS, computer.programming_language
Abstract

In this work, we investigate in a Hardware-in-the-Loop (HiL) approach to solve the problems and opportunities created by the control of large numbers (hundreds to thousands) of MEMS sensors and actuators. Using HiL simulation, one or several devices of the system are used instead of their simulated models. HiL simulation is supposed to achieve a highly realistic simulation of equipment in an operational virtual environment. In this paper, we study the capacity of a FPGA component to compute a decentralized control strategy of a contact less micromanipulateur based on distributed pneumatique MEMS. We couple a VHDL-AMS behavioral model of the DMASM device with a FPGA-based real hardware element. To validate our approach, we are able to run the FPGA-based control algorithm by emulation from a simulated model of 5 × 5 cells. Simulation and hardware results are presented using a graphic interface with digital input and output nodes to perform the control emulation.

Published
2010

4. Designing Decentralized controllers for distributed-air-jet MEMS-based micromanipulators by reinforcement learning

Author

Yves-Andre Chapuis, Nadine Le Fort-Piat, Guillaume J. Laurent, Laëtitia Matignon, Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institut d'Electronique du Solide et des Systèmes (InESS), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Université de Franche-Comté (UFC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Technologie de Belfort-Montbeliard (UTBM)

Subjects
decentralized control, 0209 industrial biotechnology, Engineering, reinforcement learning, Control (management), 02 engineering and technology, Design control, Industrial and Manufacturing Engineering, 020901 industrial engineering & automation, distributed control, Artificial Intelligence, Control theory, Position (vector), 0202 electrical engineering, electronic engineering, information engineering, Reinforcement learning, Electrical and Electronic Engineering, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Microelectromechanical systems, business.industry, Mechanical Engineering, Perspective (graphical), smart surface, Control engineering, Object (computer science), Decentralised system, MEMS-based actuator array, Control and Systems Engineering, 020201 artificial intelligence & image processing, business, Software
Abstract

International audience; Distributed-air-jet MEMS-based systems have been proposed to manipulate small parts with high velocities and without any friction problems. The control of such distributed systems is very challenging and usual approaches for contact arrayed system don't produce satisfactory results. In this paper, we investigate reinforcement learning control approaches in order to position and convey an object. Reinforcement learning is a popular approach to find controllers that are tailored exactly to the system without any prior model. We show how to apply reinforcement learning in a decentralized perspective and in order to address the global-local trade-off. The simulation results demonstrate that the reinforcement learning method is a promising way to design control laws for such distributed systems.

Published
2010
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5. A unified artificial neural network architecture for active power filters

Author

Djaffar Ould Abdeslam, Patrice Wira, Yves-Andre Chapuis, Damien Flieller, Jean Merckle, Modélisation, Intelligence, Processus et Système (MIPS), Ecole Nationale Supérieure d'Ingénieur Sud Alsace-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-IUT de Colmar-IUT de Mulhouse, Groupe de Recherche en Electrotechnique et Electronique de Nancy (GREEN), Université de Lorraine (UL), Institut d'Electronique du Solide et des Systèmes (InESS), and Centre National de la Recherche Scientifique (CNRS)

Subjects
Engineering, Adaptive control, 020209 energy, 02 engineering and technology, adaptive control, Electric power system, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, Control theory, Distortion, three-phase electric system, harmonics, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Electrical and Electronic Engineering, artificial neural networks (ANNs), Artificial neural network, business.industry, 020208 electrical & electronic engineering, Filter (signal processing), AC power, Active power filter (APF), Control and Systems Engineering, Harmonics, Harmonic, selective compensation, business, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing
Abstract

International audience; In this paper, an efficient and reliable neural active power filter (APF) to estimate and compensate for harmonic distortions from an AC line is proposed. The proposed filter is completely based on Adaline neural networks which are organized in different independent blocks. We introduce a neural method based on Adalines for the online extraction of the voltage components to recover a balanced and equilibrated voltage system, and three different methods for harmonic filtering. These three methods efficiently separate the fundamental harmonic from the distortion harmonics of the measured currents. According to either the Instantaneous Power Theory or to the Fourier series analysis of the currents, each of these methods are based on a specific decomposition. The original decomposition of the currents or of the powers then allows defining the architecture and the inputs of Adaline neural networks. Different learning schemes are then used to control the inverter to inject elaborated reference currents in the power system. Results obtained by simulation and their real-time validation in experiments are presented to compare the compensation methods. By their learning capabilities, artificial neural networks are able to take into account time-varying parameters, and thus appreciably improve the performance of traditional compensating methods. The effectiveness of the algorithms is demonstrated in their application to harmonics compensation in power systems.

Published
2007
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6. 3-D large-scale IC/MEMS co-integration using liquid solder for flip-chip assembly

Author

Alexis Debray, Yves-Andre Chapuis, Hiroyuki Fujita, Jung, Marie-Anne, IEEE, Institut d'Electronique du Solide et des Systèmes (InESS), and Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Microelectromechanical systems, Microactuator, Fabrication, Materials science, Chip-scale package, Soldering, Stiction, Hardware_INTEGRATEDCIRCUITS, Nanotechnology, Hardware_PERFORMANCEANDRELIABILITY, Chip, Flip chip
Abstract

In this paper, we discuss a flip-chip packaging method using liquid solder for 3D large-scale electronic/MEMS co-integration. This approach has been inspired from self-assembly technique which is emerging as one of the main methods for fabrication of heterogeneous micro-and nano-systems. We proposed to form solder bump by coating liquid solder directly on electrodes of a MEMS chip based on sophisticate microstructures of electrostatic microactuator array. Self-alignment and assembly techniques for electronic receptor chip were also detailed in order to achieve efficient flip-chip of MEMS and Electronic chip without any stiction and contamination problem. Functionality of the system has been validated and perspectives discussed.

Published
2007

7. Distributed MEMS-microvalves-suitable structure for improving performances of intelligent pneumatic two-dimensional microconveyer

Author

Yamato Fukuta, Yoshio Mita, Yves-Andre Chapuis, Hiroyuki Fujita, Jung, Marie-Anne, edited by V.K. Varadan, Institut d'Electronique du Solide et des Systèmes (InESS), and Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Microelectromechanical systems, Structure (mathematical logic), Engineering, Bulk micromachining, business.industry, Microfluidics, Control engineering, Field (computer science), law.invention, Microprocessor, law, Electronic engineering, Distributed structure, business, ComputingMilieux_MISCELLANEOUS, Microfabrication
Abstract

In this paper, a design approach was proposed to define suitable structures of distributed controlled MEMS used in a pneumatic two-dimensional microconveyance system. After an introduction to distributed systems, a brief survey of their applications in the field of micromanipulation and prospect in industrial microfabrication was presented. Afterward, the authors introduced the notion of intelligent motion surface used in the field of pneumatic microconveyance. They analyzed suitable distributed structures based on elementary microconveyance, which are supposed to provide an appropriate air-flow force and overcome microfluidic problems. The first microconveyer prototype was fabricated by using bulk micromachining technique. It was developed to estimate MEMS density required to produce an elementary force to convey a micro-object. Then, a specific distributed structure was proposed to develop the pneumatic two-dimensional microconveyer device. The device size is 35 x 35 mm 2 for 560 MEMS-microvalves, controlled by distributed arrays and processed by a centralized intelligence via a microprocessor. From experimental conveyance results, we can conclude to the feasibility of the pneumatic microconveyance by distributed air-flow microactuators.

Published
2004

8. Conveyor for pneumatic two-dimensional manipulation realized by arrayed MEMS and its control

Author

Atsushi Ino, Masashi Yanada, Yoshio Mita, Yamato Fukuta, Hiroyuki Fujita, Satoshi Konishi, Yves-Andre Chapuis, Institut d'Electronique du Solide et des Systèmes (InESS), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), J. Robot. Mechatronics, and Jung, Marie-Anne

Subjects
Microelectromechanical systems, Materials science, General Computer Science, Mechanical engineering, Electrical and Electronic Engineering
Abstract

We propose a microconveyor based on silicon microelectromechanical systems (MEMS) technology and demonstrate successful operation of the microconveyor. Microactuators work as air nozzles, which generate directed air flow by changing the pathways of compressed nitrogen gas. One-dimensional conveyance of an object 2.1mm × 4.1mm × 200μm weighing approximately 4mg is demonstrated with a directed air flow of 17kPa. Using a two-dimensional conveyor, we levitate and move an object 3mm × 3mm × 100μm weighing approximately 2mg using a continuous air flow. Conveyance toward the force equilibrium point was achieved with a regularly pulsed air flow. We are now studying full control of two-dimensional conveyance. We also propose control by actuating air nozzles to change the direction of air flow and move the equilibrium point to transfer the object to the desired point.

Published
2003

9. Design and simulation of ASIC-based system control: Application to direct torque control of induction machine

Author

C. Girerd, P. Poure, Yves-Andre Chapuis, F. Aubepart, F. Braum, Laboratoire d'Électronique et de Physique des Systèmes Instrumentaux (LEPSI), and Université Louis Pasteur - Strasbourg I

Subjects
Computer science, Hardware description language, Control engineering, Integrated circuit, law.invention, Application-specific integrated circuit, Direct torque control, law, Control system, VHDL, Hardware design languages, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, computer, Induction motor, ComputingMilieux_MISCELLANEOUS, computer.programming_language, Machine control
Abstract

This paper presents a general "top-down" methodology for design and simulation of system control ASIC (application specific integrated circuit) using hardware description languages (HDL). Two languages are used: VHDL (very high speed integrated circuit hardware description language) for ASIC modeling and realization, and SpectreHDL for analog modeling of the control environment. The different models allow the optimization step by step of the final ASIC from the optimization of the control algorithm to the ASIC architecture. Each stage is completed by a functional validation resulting of mixed (analog/digital) simulation. This methodology is applied to direct torque control (DTC) of an induction machine. After describing the DTC principle, algorithm validation and optimization are studied: choices of numerical calculation methods, binary format and type. Then, architecture optimization is developed in order to implement the algorithm. Due to torque regulation accuracy and reduced treatment time, optimized architecture using 32 bits fixed point specific format type has been hardware implemented.

Published
1999

10. Quantization problem analysis on ASIC-based direct torque control of an induction machine

Author

C. Girerd, J.P. Blondé, Yves-Andre Chapuis, F. Braun, F. Aubepart, Jung, Marie-Anne, and IEEE

Subjects
Computer Science::Hardware Architecture, Digital signal processor, Direct torque control, Application-specific integrated circuit, Computer science, Quantization (signal processing), Electronic engineering, Torque, Sampling (statistics), Control engineering, AC motor, Induction motor, ComputingMilieux_MISCELLANEOUS
Abstract

Latest developments in digital intelligent motion, as digital signal processors (DSPs), has strongly improved AC motor control performances. Application-specific-integrated circuit (ASIC) technology has changed the need for rapid process and low-cost processor. However, new technological problems appeared, requiring digital properties which need considering, such as quantization, sampling, word length and data types. The authors of this paper propose to study the quantization problems on ASIC-based direct torque control of an induction machine. They present a high level behavior model of the specific circuit and analyze the torque quantization errors. Finally, simulation results illustrate quantization influences on control performances with different data type solutions.

Published
1998

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