Tracking control strategy for the optoelectronic system on the flexible suspended platform based on backstepping method

Wei Yu; Jiaguang Ma; Jing Xiao

doi:10.1117/12.954140

15 October 2012 Tracking control strategy for the optoelectronic system on the flexible suspended platform based on backstepping method

Wei Yu, Jiaguang Ma, Jing Xiao

Author Affiliations +

Proceedings Volume 8418, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Smart Structures, Micro- and Nano-Optical Devices, and Systems; 84181L (2012) https://doi.org/10.1117/12.954140
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

To improve the optoelectronic tracking ability and rope-hanged platform attitude stability, against the interact effect between rope-hanged platform and optoelectronic system during system tracking process, the optoelectronic system fixed on rope hanged platform simplified dynamic model, according to the system’s Lagrange dynamic model, was established. Backstepping method was employed to design an integrated controller for both optoelectronic system azimuth direction steering and platform attitude stabilizing. To deal with model’s uncertainty and disturbance, a sliding mode controller form based exponential reaching law was adopted to structure the integrated controller. Simulation experiments simulated an optoelectronic system with 600mm caliber telescope, whose inertia fluctuation is 6%. The maximal control moment is 15Nm. And the external disturbance and internal friction effected together. When the line of sight(LOS) azimuth angular input is a step signal with 1rad amplitude, the response’s overshoot is 6%, and the response time is 6.2s, and the steady state error is less than 4×10^-4rad. When the input is a sinusoidal signal of 0.2rad amplitude with 0.0318Hz frequency, the LOS azimuth angular error amplitude is 5. 6×10^-4rad. It is concluded that the controller designed in this article has excellent ability and can ensure the system’s stability.

Citation Download Citation

Wei Yu, Jiaguang Ma, and Jing Xiao "Tracking control strategy for the optoelectronic system on the flexible suspended platform based on backstepping method", Proc. SPIE 8418, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Smart Structures, Micro- and Nano-Optical Devices, and Systems, 84181L (15 October 2012); https://doi.org/10.1117/12.954140

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KEYWORDS

Optoelectronics

Control systems

Complex systems

Bismuth

Device simulation

Systems modeling

Motion models

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