A drive control system for a servo motor

Abstract

The invention discloses a driving control system used for a servo motor. The input end of a servo driving circuit is connected with the output end of a controller of the servo motor; the output end ofthe servo driving circuit is connected with the signal input end of a servo driver; the power supply input end of the servo driver is connected with a three-phase alternating current power supply; the power supply output end of the servo driving circuit is connected with the power supply input end of the servo motor; the power supply input ends of three inversion circuits are connected with the two ends of a capacitor, and the power supply output ends of the inversion circuits are connected with the power supply input end of the servo motor; the input end of the inversion driving circuit is connected with the output end of the controller, and the output end of the inversion driving circuit is connected with the control ends of the inversion circuits; a stand driving signal generator is connected with the input end of the controller; and a comparison module is connected with the controller, wherein the three-phase alternating current power supply or the inversion circuits can be connected with the power supply input end of the servo motor according to the comparison result of the comparison module. By virtue of the driving control system, the technical problem of incapability of accurate control on the servo motor can be solved.

Description

technical field [0001] The invention relates to the technical field of servo motor control, in particular to a drive control system for a servo motor. Background technique [0002] In the control of servo motors in the prior art, the current closed-loop control loop is usually used for control, but in this control method, the motor output difference caused by the change of the parameters of the servo motor itself is not eliminated in advance, resulting in the control accuracy of the servo motor The parameter changes of the servo motor include the disturbance of the servo motor parameters, the change of the frictional resistance of the motor, the change of the rotational inertia, the noise of the current sensor and other factors, and the instability of the power supply voltage will also cause the control accuracy of the servo motor to decrease. decline. [0003] Therefore, it is very important for the precise control of the servo motor to eliminate the motor output differenc...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a drive control system for servo motors, which can effectively eliminate the influence of voltage fluctuations input to the three-phase AC power supply on the control of the servo motors, and precisely control the servo motors by switching the power supply of the servo motors to solve the problem of Solved the technical problem that the servo motor could not be precisely controlled

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