Positioning Error of Optoelectronic Telescope Compensated by Bipolar PWM Driving Mode

摘要

The optoelectronic telescope has two sets of control systems: azimuth one and elevation one, and both are driven by PWM power amplifier with high efficiency and wide speed regulation range. The diagram of the azimuth control system is demonstrated, the nonlinear factors is analyzed at low speed, and some related experiments are carried out. The results show that the positioning error with unipolar is 86 codes(106. 21"), while 18 codes (22. 23") is with bipolar PWM driver.