Test method and device for nonlinear parameters of motor

Abstract

The invention discloses a test method and device for nonlinear parameters of a motor, and the method comprises the following steps of exciting vibration of the motor by using an excitation signal, performing synchronous information acquisition on the motor in a vibrating state to obtain a voltage measured value and a current measured value, acquiring a linear parameter initial value and a nonlinear parameter initial value of the motor, calculating a linear parameter target value of the motor according to the voltage measured value, the current measured value and the linear parameter initial value, and calculating a nonlinear parameter target value of the motor by adaptive filtering according to the voltage measured value, the current measured value, the linear parameter target value and the nonlinear parameter initial value. By measuring the nonlinear parameters of the motor, accurate control of the motor vibration is realized by using a nonlinear model to improve the control accuracyof the motor, thereby improving motor performance.

Description

technical field [0001] The invention relates to the field of micro-electromechanical technology, in particular to a method and device for testing nonlinear parameters of a motor. Background technique [0002] With the development of science and technology, people have higher and higher requirements for the intelligence and diversification of electronic products, and require richer human body perception and human-computer interaction experience. Touch is an important part of human perception, and the Linear Resonance Actuator (LinearResonance Actuator, LRA, commonly known as motor) is the key device to reflect the touch. As a result, motors are increasingly used in electronic devices such as smartphones, smart watches, and tablets. The accuracy and completeness of the technical parameters of the motor are crucial to the accuracy of the modeling and directly determine the performance of the motor. [0003] At present, the most used motor is the magnetic steel array linear mo...

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Problems solved by technology

[0005] In view of this, the present invention provides a test method and device for motor nonlinear parameters, which are used to solve the problem in the prior art that the motor nonlinear modeling error is relatively large, resulting in low control accuracy of the motor and failure to achieve the expected effect

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