Title:
METHOD FOR ACQUIRING FREQUENCY CHARACTERISTICS OF SERVO SYSTEM, AND ELECTRONIC APPARATUS AND STORAGE APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/024174
Kind Code:
A1
Abstract:
Disclosed are a method for acquiring frequency characteristics of a servo system, and an electronic apparatus and a storage apparatus. The method comprises: within at least one specified frequency range, successively providing sinusoidal excitation signals of different frequencies to a servo system so as to carry out stepwise scanning on an output signal of the servo system; in each step of the stepwise scanning, carrying out synchronous integer-period sampling on the output signal of the servo system to acquire amplitudes and phases of the output signal of the servo system at different frequency points; and according to the amplitudes and phases of the output signal of the servo system at different frequency points and the sinusoidal excitation signals, obtaining, by means of calculation, frequency characteristics of the servo system. By means of providing sinusoidal excitation signals of different frequencies to a servo system and carrying out synchronous integer-period sampling on the output of the servo system, frequency leakage and non-linear modal features of a system during spectral analysis can be improved or eliminated, thereby improving the calculation accuracy. Therefore, the present invention can improve the accuracy of an acquired frequency characteristic curve of the servo system and facilitates accurate control over the servo system.
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Inventors:
TAO ZHIYU (CN)
Application Number:
PCT/CN2018/098111
Publication Date:
February 06, 2020
Filing Date:
August 01, 2018
Export Citation:
Assignee:
SHENZHEN A & E INTELLIGENT TECH INST CO LTD (CN)
International Classes:
G05B13/04
Foreign References:
| CN106066636A | 2016-11-02 | |||
| CN106647258A | 2017-05-10 | |||
| CN106338967A | 2017-01-18 | |||
| US20070205740A1 | 2007-09-06 |
Attorney, Agent or Firm:
CHINA WISPRO INTELLECTUAL PROPERTY LLP. (CN)
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