Control method, control system and mobile positioning system for moving target object

Abstract

The invention discloses a control method, a control system and a mobile positioning system for a moving target object, wherein the control method comprises the following steps of: in each control time period, obtaining the current position of the target object, and judging whether the actual moving distance of the target object in the current motion stage is greater than the reference distance of the current motion stage according to the current position. According to whether the current time is at the ending time point of the current motion stage of the target object, and in combination with the above judgment result, the reference moving time of the current motion stage and the ending time of the later motion stage are correspondingly regulated. Further, the period or the frequency of a pulse signal is determined according to the motion state of the target object in the current motion stage, and a transmission device is indicated to control the movement of the target object according to the determined period or frequency of the pulse signal. The technical scheme guarantees directional, steady and smooth rotation of the transmission device while accurately controlling the target object to be located accurately, and effectively prolongs the service life of the transmission device.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a control method, a control system and a mobile positioning system for a moving target object. Background technique [0002] With the development of control motor technology, especially the continuous improvement of the performance of high-precision control motors such as DC brushless motors and stepping motors, and the continuous maturity of mobile positioning scale technologies such as grating technology, various displacements driven by high-precision motors The high-precision mobile positioning control of the system becomes possible. [0003] Generally, in a mobile system driven by a motor, the movement of the target object is driven by the rotation of the motor. However, due to the different design requirements of the mobile system, there is a large difference in the actual distance that the motor drives the target object to move after one revolution. Take the stepper ...

AI Technical Summary

Problems solved by technology

[0006] However, in practice, it is found that the open-loop design does not feedback the actual position, so it is difficult for the control system to control the target object to move to the specified position accurately in the three motion stages, and the actual movement positioning error is relatively large

In the closed-loop design, it is difficult to control the movement of the target object according to the ideal movement method, which may cause unstable pulse cycle or even reverse pulse during the movement process, which will damage the motor and reduce the service life of the motor.

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