XIONG Ai, FAN Yong-kun, WU Qin-zhang. Design of a variable structure PI controller and its application in photoelectronic tracking systems[J]. 光学精密工程, 2010,18(8): 1855-1861
XIONG Ai, FAN Yong-kun, WU Qin-zhang. Design of a variable structure PI controller and its application in photoelectronic tracking systems[J]. 光学精密工程, 2010,18(8): 1855-1861 DOI: 10.3788/OPE.20101808.1855.
Design of a variable structure PI controller and its application in photoelectronic tracking systems
With the aim to provide a high performance servo control for photoelectronic tracking systems
a simple Variable-structure PI controller(VSPI) is presented by combining the traditional PI controller theory and the variable-structure idea
then the principles of the controller are introduced and its design parameter selection is also discussed. Based on the structure of a photoelectronic tracking system
the servo control systems by using VSPI
Anti-windup PI controller(AMPI) and Integral Separation PI controller(ISPI) are simulated
respectively
and the experiments on positioning tracking and equivalent sine tracking are also carried out. The experimental result shows that the system with VSPI controller has no overshoot and its rise time
settling time and tracking precision are 0.378 s
0.488 s and 1.26
respectively. Compared with the systems using other two algorithms
the system with VSIP can complete real time control and can offer better comprehensive performance
which completely satisfies the requirements of photoelectronic tracking systems for high precision and fast response.
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references
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