Magnetic bearing system harmonic current suppression method based on parallel finite dimensional repetitive control (FDRC)
A harmonic current and repetitive control technology, applied in general control systems, control/regulation systems, adaptive control, etc., can solve problems such as the decline of high-frequency vibration suppression ability
Active Publication Date: 2018-03-27
HUACHI KINETIC ENERGY (BEIJING) TECH CO LTD
View PDF9 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
As the rotor speed increases, the algorithm's ability to suppress high-frequency vibration decreases
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0074] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation steps.
[0075] like figure 1 As shown, a method for suppressing multi-harmonic vibration of magnetic bearings based on finite-dimensional repetitive control of the present invention, its realization process is: firstly establish a two-degree-of-freedom magnetic bearing system that includes rotor unbalance and displacement sensor harmonic noise (Sensor Runout) Dynamic model; then design the magnetic bearing harmonic current suppression algorithm based on the parallel FDRC; finally, according to the characteristics of the closed-loop root locus, design the FDRC controller parameters of each order, and analyze the stability of the magnetic bearing harmonic current suppression closed-loop system. The specific implementation steps of the present invention are as follows:
[0076] (1) Establish a two-degree-of-freedom magnetic bearing rotor dynamic...
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
Login to View More Abstract
The invention discloses a two-degree-of-freedom magnetic bearing system harmonic current suppression method based on parallel finite dimensional repetitive control (FDRC). The method comprises the following steps: a two-degree-of-freedom magnetic bearing rotor dynamic model containing rotor unbalance and displacement sensor harmonic noise is firstly built; with a power amplifier system as a controlled object and coil current as a controlled variable, the parallel FDRC is used to design magnetic bearing system harmonic current suppression; and finally, parameters of the parallel FDRC controllerare designed, the system stability is analyzed, and on the premise of ensuring the stability of a closed loop system, two-degree-of-freedom magnetic bearing system harmonic current suppression is realized. The order of the FDRC can be selected rationally according to harmonic current suppression precision requirements, and influences on the suppression precision and the system stability by a lowpass filter in the traditional repetitive control can be overcome; and when the controller parameters are designed, influences on the harmonic current suppression precision by power amplifier low passcharacteristic are directly considered, and additional design of a compensation link for the power amplifier system is not needed.
Description
technical field [0001] The invention belongs to the field of active vibration control of magnetic bearing systems, in particular to a method for suppressing harmonic currents of magnetic bearing systems based on parallel finite-dimensional repetitive control, which is used for two-degree-of-freedom magnetic bearing systems containing rotor unbalance and sensor harmonic noise Harmonic current suppression. Background technique [0002] With the development of ultra-high-resolution satellites such as high-resolution earth observation, deep space exploration, and inter-satellite laser communication in the future, ultra-quiet, ultra-stability and agile maneuvering have become two important indicators for measuring the performance of satellite platforms. Higher and higher resolution indicators have higher and higher requirements for the pointing accuracy and attitude stability of the satellite platform, so it is more and more sensitive to the vibration source on the satellite. Th...
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
Login to View More IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 张会娟陈红梅刘楠嶓袁航钱进姚艳艳
Owner HUACHI KINETIC ENERGY (BEIJING) TECH CO LTD