航空光电稳定平台高性能摩擦力补偿方案

doi:10.7527/S1000-6893.2017.321350

Abstract

Abstract: To improve the performance of airborne photoelectric stabilized platform on the basis of traditional controller and reduce the negative influence of friction in Line of Sight (LOS) stabilization and pointing of mechanical servo system, a scheme for friction compensation control based on the Active Disturbance-rejection Controller (ADRC) is proposed. First, the LuGre model is introduced into the original system to suppress the disturbance of the servo system. Then, the residual disturbance caused by the friction compensation is further suppressed by designing the ADRC controller. To verify the disturbance rejection performance of the control strategy, the aviation photoelectric stabilized platform is installed in the flight simulator experiment test. The performance before and after addition of the friction compensation scheme based on the ADRC is compared. Experimental results show that compared with the traditional control scheme, the isolation of the photoelectric platform with the scheme proposed is improved by at least 14 dB. In the target tracking experiment, the system's LOS stabilization is reduced by at least 78.9%. The compensation scheme is easy to realize and is compatible with the photoelectrical platform, meeting the requirements of high precision aeronautical optoelectronic stability platform.

Key words: aerial photoelectrical stabilized platform, LuGre model, friction compensation, ADRC, disturbances rejection

CLC Number:

TP273

WANG Zhengxi, ZHANG Bao, LI Xiantao, ZHANG Shitao, MA Binghua. Friction compensation strategy of high performance for aerial photoelectrical stabilized platform[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(12): 321350-321350.

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Friction compensation strategy of high performance for aerial photoelectrical stabilized platform

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