Motor operation control method based on discrete current vector phase-amplitude coordination

Abstract

The invention provides a motor operation control method based on discrete current vector phase-amplitude coordination. The motor operation control method is characterized by meeting three different control requirements for phase-amplitude coordination control in the motor operation process, the first requirement is to take output torque maximization as a goal, the second requirement is to take torque pulse minimization as a goal and the third requirement is to take position deviation minimization as a goal. The phase angle and the amplitude of current vector are respectively subjected to coordinated control. The control method adopts the following devices: a phase-amplitude coordination control module, a current control module, a power circuit, a motor, a position detection module and a current detection module, wherein one end of the phase-amplitude coordination control module is connected with the current control module, and the other end of the phase-amplitude coordination control module is connected with the position detection module; the current control module is connected with the signal control terminal of the power circuit; the output terminal of the power circuit is connected with the motor through a wire which penetrates the current detection module; the current detection module is further connected with the current control module; the position detection module and the motor are coaxially mounted.

Description

technical field [0001] The technical solution of the present invention relates to a motor control technology, in particular to a motor operation control method based on phase amplitude coordination of discrete current vectors. Background technique [0002] AC stepping drive control is a control strategy that changes the continuous operation of the motor into stepping operation, so as to obtain the motor's stepping direct drive speed regulation, micro-step positioning and other operating modes. It has been used in asynchronous motors, synchronous motors and switched reluctance applied to motors. The technique of AC stepping is to divide the continuous current of the motor into discrete steps b H Equal step distances disperse into ladder wave currents, taking a three-phase motor as an example, formula (1): [0003] i a = I ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a motor operation control method based on discrete current vector phase-amplitude coordination. The motor operation control method is based on AC step control, and on the basis of discrete current vector control with positioning characteristics, According to different operating conditions and different control objectives of the motor, a phase-by-stage coordinated control strategy of current vector phase and amplitude is proposed. By coordinating the discrete current vector amplitude and phase, that is, the step of calculating the discrete current amplitude and phase The improved torque characteristics are achieved, and the defects of large speed overshoot, excessive torque ripple, long positioning time and low positioning accuracy are overcome during the entire operation of the motor.

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