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Motor system identification method

A system identification and motor technology, applied in the field of signal processing, can solve the problems of cumbersome analysis, system identification errors, and difficulty in accurately describing the nonlinear components of motors.

Inactive Publication Date: 2019-06-18
AAC TECH PTE LTD
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  • Description
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Problems solved by technology

On the one hand, the analysis is more cumbersome, and errors in the cognition of the physical model will lead to errors in system identification; on the other hand, it is difficult to accurately describe the nonlinear components of the motor

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Embodiment Construction

[0039] 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 making creative efforts belong to the protection scope of the present invention.

[0040] see figure 1 , the present invention provides a motor system identification method, the method includes a signal generator 1 , a motor system 2 and an accelerometer 3 .

[0041] The signal generator 1 inputs an excitation voltage x(n) to the motor system 2 .

[0042] The motor system 2 is used for the identified motor system. In this embodiment, the motor system 2 is regarded as a black box. The input signal is the excitation voltage x(n), and the ou...

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Abstract

The invention provides a motor system identification method. The method comprises the steps of building a functional series filter model for describing a motor system; generating a logarithmic swept-frequency signal; feeding the generated logarithmic swept-frequency signal to the motor system, and using an accelerometer to collect vibration acceleration output by the motor system; generating an inverse signal of the logarithmic swept-frequency signal; carrying out convolution on the collected vibration acceleration and the inverse signal to obtain a one-dimensional impulse response sequence; for the one-dimensional impulse response sequence, capturing all parts of the impulse response sequence by using a window function; and solving a kernel function according to all the parts of the impulse response sequence, substituting all parts of the solved kernel function into an identification formula of the motor system, and describing and identifying the motor system through the identification formula. Compared with the related art, the motor system identification method disclosed by the invention is simple and feasible, and high in reliability.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a motor system identification method using a one-dimensional Voltera filter. Background technique [0002] Today, with the development of science and technology, the senses such as audio-visual are difficult to meet people's needs, and tactile feedback has entered the public's field of vision as a direct feeling. With the motor as the core and electronic devices (such as mobile phones, tablet computers, and car central controls) as the carrier, haptic actuators can obtain customized haptic experiences by designing their specific waveforms. For example, different vibrations can be equipped for different sound sources in combination with the scene in the game, so that people can recognize objects in the game more directly and quickly, and at the same time obtain a higher sense of immersion; Customize the vibration waveform to get the special feeling of physical keys. In order to ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34G01M15/12G01H17/00
CPCG01H1/00G06F3/016H04M1/72454B06B1/045G05D19/02H04M1/72403
Inventor 郭璇向征李涛
Owner AAC TECH PTE LTD
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