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LOS stabilization of optic-electro landing system
- Source :
- Optics and Precision Engineering. 22:1577-1583
- Publication Year :
- 2014
- Publisher :
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 2014.
-
Abstract
- To increase line-of-sight (LOS) tracking and pointing accuracy of an Optic-Electro (O-E) landing guidance system, this work explores how to isolate the LOS tracking and pointing of a O-E theodolite from the carrier motion disturbance. A carrier-based O-E theodolite model was established with various disturbance factors introduced. Three kinds of controllers, Lead-lag, LQG/LTR(Linear Quadratic Gaussian/Loop Transfer Recovery) and H were designed to improve the stability and performance of the system. The Kalman filter and H weighting matrix were investigated in detail. Then, the controllers were emulated in Matlab and verified on a swing bench. The compared experiments for the three kinds of controllers on time domain, frequency response and stability were performed. Obtained results show that both LQG/LTR and H controllers can satisfy the design specifications, and their decoupling effects are as deep as 50 dB, which can ensure precise tracking and pointing performance of LOSs in O-E landing guidance systems.
- Subjects :
- Engineering
Frequency response
business.industry
Decoupling (cosmology)
Kalman filter
Linear-quadratic-Gaussian control
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Control theory
Time domain
business
MATLAB
Guidance system
computer
Simulation
computer.programming_language
Theodolite
Subjects
Details
- ISSN :
- 1004924X
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Optics and Precision Engineering
- Accession number :
- edsair.doi...........6ab2d53add32033cbe2e90fab7a414b3