Automatic zero setting method of servo control system

Abstract

The invention discloses an automatic zero setting method of a servo control system, and the automatic zero setting method comprises the steps of collecting, comparing a stable threshold, and adjusting and updating. The automatic zero setting method of the servo control system, provided by the invention, comprises: periodically collecting the sum of compensation values of an input control signal and a zero setting signal, and if the value is larger than the stable threshold, performing a progressive decrease operation on the compensation value of the zero setting signal in the next machine period; on the contrary, performing a progressive increase operation until the superposition value of the compensation values of the input control signal and the zero setting signal is smaller than the stable threshold, and the system considers that a stable state is achieved and can automatically terminate the zero setting process. To meet the requirements of relatively quick response, the size of the sum of the compensation values of the input control signal and the zero setting signal is further judged, and rough adjusting and fine adjusting are performed according to a set quick adjusting threshold, so that both the requirements of quickness and precision are met.

Description

technical field [0001] The invention relates to the technical field of control of a servo system, in particular to a method for automatic zeroing of a servo control system. Background technique [0002] In the servo control system, the traditional zero adjustment is mostly adjusted by installing a mechanical potentiometer on the debugging tooling box. In order to achieve precise adjustment, a multi-turn precision potentiometer must be used to achieve zero point adjustment by manually rotating the potentiometer. This method is not only cumbersome to operate, but also takes a long time to adjust, and the response speed is slow, and it is also not conducive to the realization of precise adjustment. The method of the invention mainly uses a DSP digital signal processor to perform analog-to-digital conversion on the joystick control signal and track and collect it. When the system detects that the control signal is greater than a certain set value when the system is static, it i...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcomings of the inability to realize automatic zero adjustment in the active servo control system, overcome the limitations and poor precision of the mechanical potentiometer zero adjustment, and provide a short adjustment time, fast response speed, and practical And the method of automatic zero adjustment of servo control system with high reliability

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