Acceleration frequency domain segmented servo control method and controller

A servo controller and servo control technology, applied in the direction of mechanical oscillation control, non-electric variable control, control/regulation system, etc., can solve the non-real-time problem belonging to the outer loop of the vibration controller, and reduce the acceleration power spectral density. The effect of reproducing process time, improving control accuracy, and improving adaptability

Active Publication Date: 2021-06-11
ZHEJIANG UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the journal paper "Research on Iterative Algorithm for Random Vibration Power Spectrum Reappearance", Guan Guangfeng et al. proposed an iterative algorithm with variable step size in frequency domain, and adopted different iterative step sizes for the driving spectrum correction process in different frequency bands, which improved the vibration performance. The efficiency of the power spectrum equalization of the controller, but its content still belongs to the non-real-time process of the outer loop of the vibration controller. Controlled Angle of Proceedings to Improve Acceleration Power Spectral Density Reproduction Process Efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Acceleration frequency domain segmented servo control method and controller
  • Acceleration frequency domain segmented servo control method and controller
  • Acceleration frequency domain segmented servo control method and controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The accompanying drawings are only used to illustrate the execution process of the acceleration frequency domain segmental servo control method proposed by the present invention, and should not be understood as limitations on this patent.

[0038] For the convenience of expression, the acceleration frequency domain segment servo control method using the parallel frequency domain segment processing method will be called the parallel acceleration frequency domain segment servo control method, and the acceleration frequency domain segment using the serial frequency domain segment processing method will be The segmented servo control method is called serial acceleration frequency domain segmented servo control method.

[0039] The parallel acceleration frequency domain segmental servo control method includes the following steps:

[0040] 1) Use the zeroth high-pass filter HPF0 to process the time-domain reference acceleration Ra to obtain the zeroth reference acceleration r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an acceleration frequency domain segmented servo control method and a controller. The method comprises the following steps: processing a time domain reference acceleration through a frequency domain segmentation processing method to obtain a synthetic reference acceleration, carrying out secondary integral calculation on the synthetic reference acceleration to obtain a reference displacement, and calculating the reference displacement and a state feedback signal of vibration system hardware by using a displacement servo control method to obtain a control output voltage. The acceleration servo controller applying the above method processes the time domain reference acceleration and the state feedback signal by using the acceleration frequency domain segmentation servo control method to obtain a control output voltage. According to the method, the high-frequency component of the frequency response function H is improved, the acceleration power spectral density control precision is improved, and the acceleration power spectral density reproduction process time of the electro-hydraulic random vibration system is shortened; and the time domain response error of the acceleration servo control inner ring during starting is reduced by initial state sampling in the controller compared with a common initial state zero setting mode.

Description

technical field [0001] The invention relates to an acceleration servo control method and a controller, in particular to an acceleration frequency domain segmental servo control method and a controller. Background technique [0002] The electro-hydraulic random vibration system is widely used in earthquake simulation test benches, product fatigue testing machines, vibration condition simulation test benches and other fields. The electro-hydraulic random vibration system takes the acceleration power spectral density reproduction ability or the acceleration time-domain random waveform tracking ability as an important basis for its performance evaluation. The structure of the general electro-hydraulic random vibration system is as follows: figure 1 As shown, according to the location of the vibration controller and the acceleration servo controller, the electro-hydraulic random vibration system can be divided into the acceleration servo control inner loop consisting of the acce...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G05D19/02
CPCG05D19/02
Inventor 周华罗贵福李建康汪子尧
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products