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Your search keyword '"Hong, Guo"' showing total 2 results
2 results on '"Hong, Guo"'

1. A Study of Smoothing Implementation in Adaptive Federate Interpolation Based on NURBS Curve

Author

Hai-Tao Zhang, Hong-Wei Guo, An-Jiang Cai, and Shi-Hong Guo

Subjects
Curve segment, Jerk, Mathematical optimization, Acceleration, Spline (mathematics), Adaptive control, Machining, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Numerical control, Algorithm, Smoothing, ComputingMethodologies_COMPUTERGRAPHICS, Mathematics
Abstract

The paper proposes smoothing adaptive NURBS curve interpolation algorithm, which is based on the forward-looking technology acceleration and jerk constraints, to adaptively adjust feed rate according to the requirements of interpolation accuracy. NURBS curve is divided into curve segments by sharp corners, and by using the corresponding acceleration and 5 paragraphs S deceleration control which acceleration limits, feeding rate of each curve segment is re-planned. So smooth speed transition curve is got to enhance the accuracy and efficiency of NC machining.

Published
2010

2. Research on a High-Frequency Response Direct Drive Valve System Based on Voice Coil Motor.

Author

Hong Guo, Dayu Wang, and Jinquan Xu

Subjects
*ELECTRIC drives, *ELECTRIC coils, *ELECTRIC motors, *ELECTROMAGNETISM, *MAGNETIC circuits
Abstract

Improving frequency response of direct drive valve (DDV) system is a research focus on the hydraulic system. This paper presents a high-frequency response DDV system based on voice coil motor (VCM-DDV). First, a new design of VCM with high acceleration is proposed. A magnetic circuit method and electromagnetic finite element method are adopted in this paper. A 3-D thermal field element method is also employed to analyze the temperature rise of the developed VCM at rated current. Next, a dual closed-loop control structure is applied in the developed VCM-DDV system. Moreover, a nonlinear PID control strategy is proposed to resolve the contradiction between stability and rapidity. The results of performance test indicate that the acceleration of the developed VCM is evidently improved, and it reaches 306 times of gravity acceleration. Experimental investigation indicates that the developed VCM-DDV system has excellent static and dynamic performances. The position bandwidth of the developed VCM-DDV is capable of achieving 350 Hz. [ABSTRACT FROM AUTHOR]

Published
2013
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