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Positioning control apparatus and method capable of reducing relative position error without increasing gain and frequency band of transfer characteristics of control system
Positioning control apparatus and method capable of reducing relative position error without increasing gain and frequency band of transfer characteristics of control system
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机译:能够在不增加增益和控制系统的传输特性的频带的情况下减小相对位置误差的定位控制装置和方法
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摘要
A positioning control apparatus for controlling a moving member to trace the position of a target member which almost equally repeats the position shift at a predetermined period comprises a position detector for detecting a relative position error, a first adder for adding a delay signal and a position error signal, a signal delay unit for outputting the delay signal which is obtained by delaying an output signal of the first adder at a period corresponding to the position shift of the target member, a second adder for adding the position error signal and the delay signal, a third adder for adding an output of the second adder and the delay signal via a filter, a compensating unit for performing the compensation for offset and/or the compensation for stabilization of the positioning control apparatus based on an output of the third adder, a drive unit for driving the moving member based on an output of the compensating unit, and a delay-amount setting unit for setting the amount of delay of a signal delayed by the signal delay unit.
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