Method and device for testing nonlinear parameters of a motor

A technology of linear parameters and testing methods, which is applied in the field of testing nonlinear parameters of motors, can solve problems such as large nonlinear modeling errors of motors, low motor control precision, and failure to achieve expected results, so as to improve performance and control accuracy. Effect

Active Publication Date: 2021-08-10
AAC TECH PTE LTD
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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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  • Method and device for testing nonlinear parameters of a motor
  • Method and device for testing nonlinear parameters of a motor

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Embodiment Construction

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0053] When the motor is a nonlinear motor, using a nonlinear model to model the motor can avoid the problem of ignoring the nonlinear characteristics of the motor when using the traditional second-order physical model to model the motor, resulting in inaccurate modeling and affecting the control accuracy of the motor. , and obtaining the nonlinear parameters of the motor is the premise of using the nonlinear model to model the motor. Based on this, the present invent...

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Abstract

The invention discloses a method and a device for testing nonlinear parameters of a motor. The method includes: using an excitation signal to excite the motor to vibrate, synchronously collecting information on the motor in the vibration state, obtaining voltage measurement values ​​and current measurement values, and obtaining motor The linear parameter initial value and the nonlinear parameter initial value, calculate the linear parameter target value of the motor according to the voltage measurement value, the current measurement value, and the linear parameter initial value, according to the voltage measurement value, the The measured current value, the target value of the linear parameter and the initial value of the nonlinear parameter are calculated by adaptive filtering to obtain the target value of the nonlinear parameter of the motor. By measuring the nonlinear parameter of the motor, the nonlinear model is realized Accurate control of motor vibration improves the control precision of the motor, thereby improving the performance of the motor.

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 linea...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/34
CPCG01R31/343G01M7/00G01M5/0066G01R27/2611G01R33/02H02N2/02
Inventor 向征郭璇路翔
Owner AAC TECH PTE LTD
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