Control method of high-accuracy adjustable servo motor

Abstract

The invention discloses a control method of a high-accuracy adjustable servo motor. The control method comprises the steps of 1, dividing a plurality of rotational speed zones and temperature zones; 2, recording a curve graph of a current deviation value, changing with a rotor position, of the servo motor under each rotational speed zone and each temperature zone; 3, performing parameter self-setting of the servo motor; 4, providing a rechargeable battery pack, and arranging a capacitor between a positive electrode and a negative electrode at an output end of the battery pack; 5, respectivelyarranging three inversion circuits at two ends of the capacitor, wherein the difference among voltage phase sequences of output second ends of the three inversion circuits is 120 degrees; and 6, connecting a power input end of the servo motor to a three-phase AC power supply, acquiring a phase voltage and a phase current of three phase inputs of the servo motor in real time, and switching the output second ends of the three inversion circuits as an input power supply of the servo motor when the phase voltage of an arbitrary phase input exceeds a set voltage range. By the control method, the technical problem that the control accuracy of the servo motor cannot be further improved is solved.

Description

technical field [0001] The invention relates to the technical field of servo motor control, in particular to a high-precision adjustable servo motor control method. 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 ou...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-precision adjustable servo motor control method, which can effectively eliminate the influence of motor output differences caused by changes in servo motor parameters and input power fluctuations on servo motor control, and solve the problem of servo motor control. The technical problem that the control accuracy cannot be further improved

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