Motor parameter control system and motor parameter control method

A technology of parameter control and motor, applied in the field of micro-electromechanical, which can solve the problems such as the inability of self-adaptive adjustment and the inability to effectively track parameter changes due to the differences between motor batches and individuals, and achieve the effect of simplifying steps.

Active Publication Date: 2019-01-25
AAC TECH PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology is simple to implement and does not require complex control theory, but it cannot be adaptively adjusted for differences between motor batches and individuals, and it cannot effectively track parameter changes caused by changes in motor temperature and attitude.

Method used

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  • Motor parameter control system and motor parameter control method
  • Motor parameter control system and motor parameter control method
  • Motor parameter control system and motor parameter control method

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] The motor parameter control system of this embodiment is applied to linear motors in smartphones and tablet computers, and can realize dynamic tracking of motor parameters through simple feedback signal detection.

[0040] like figure 1 As shown, the motor parameter control system 100 of the present invention includes a forward processing module 1 , a control object module 2 and a system is module 3 .

[0041] The feedforward processing module (Feedforward Processing) 1 is provided with a linear processing unit 11, and the feedforward processing module 11 performs linear processing on the control signal according to parameters, specifically, processing methods such as filtering and equalization are included, so that the control signal x[n] After passing through this module, y[n] is obtained.

[0042] The control object module 2 includes a DAC d...

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Abstract

Compared with the prior art, the invention provides a motor parameter control system and a motor parameter control method, comprising a forward processing module for linearly processing a control signal according to the parameters; Control object module, Includes DAC digital-to-analog converters. an amplifier circuit and an ADC analog-to-digital converter, wherein the control signal processed by the forward processing module is subjected to power amplification by the DAC digital-to-analog converter, and the voltage vcm [n] and the current icm [n] at both ends of the motor are obtained throughthe ADC analog-to-digital converter; System identification module, includes an LMS adaptive filter, The error signal err [n] of the measured current icm [n] and the predicted current icp [n] is filtered in the LMS adaptive filter by the least mean square filter, the iterative result is fed back to the forward processing module, and the feedback result is applied to the next data acquisition and parameter calculation. The motor parameter control system provided by the invention can solve the common difficulties in the actual measurement operation, simplify the steps, facilitate the measurementand ensure the accuracy of the measurement.

Description

technical field [0001] The invention relates to the field of micro-electromechanical systems, in particular to a motor parameter control system and a motor parameter control method. Background technique [0002] With the increasing popularity of linear motors (LRA) in smart phones, tablet computers and other fields, how to effectively control the vibration of the motor becomes very important. Conventional control methods use preset motor parameters to control motor excitation signals, which is usually called open-loop control technology. This technology is simple to implement and does not require complex control theory, but it cannot be adaptively adjusted for differences between motor batches and individuals, and it cannot effectively track parameter changes caused by changes in motor temperature and attitude. [0003] Therefore, it is necessary to provide a new motor parameter control system and a motor parameter control method to solve the above problems. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P25/06
CPCH02P25/06H03M1/66H03M1/12H02P6/006H02P25/034G01L1/125G06F17/11H03M1/68
Inventor 向征路翔邓瀚林蒋亮
Owner AAC TECH PTE LTD
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