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Multivariable feedback linearization control method for variable frequency pump controlled motor speed adjustment system

A technology of feedback linearization and speed regulation system, which is applied in the direction of control system, general control strategy, AC motor control, etc., can solve the problem that PID control mode is difficult to obtain satisfactory control effect, etc., and achieves simple structure, small torque ripple, and smooth operation reliable effect

Inactive Publication Date: 2016-08-10
SUZHOU INST OF INDAL TECH
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  • Claims
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Problems solved by technology

[0002] Due to the multi-variable, nonlinear and strong coupling characteristics of the variable frequency pump control motor speed control system, the traditional PID control method is difficult to obtain a satisfactory control effect

Method used

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  • Multivariable feedback linearization control method for variable frequency pump controlled motor speed adjustment system
  • Multivariable feedback linearization control method for variable frequency pump controlled motor speed adjustment system
  • Multivariable feedback linearization control method for variable frequency pump controlled motor speed adjustment system

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Embodiment

[0028] Such as figure 1 As shown, a multi-variable feedback linearization control method for variable-frequency pump-controlled motor speed regulation system includes the following steps:

[0029] (1) Select the research object; the research object is a permanent magnet synchronous motor, which has the advantages of simple structure, reliable operation, small torque ripple, and high power density ratio. way;

[0030] (2) According to the nature of the research object in step (1), the permanent magnet synchronous motor and frequency converter in the speed control system are taken as a whole, focusing on the breakthrough of these actual factors that restrict the performance of the system, from the perspective of linearization and decoupling control Proceeding from this method, an applicable multivariable feedback linearization control strategy is proposed;

[0031] (3) List the basic variable parameters and basic variable equations to obtain the system mathematical model;

[...

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Abstract

The invention discloses a multivariable feedback linearization control method for a variable frequency pump controlled motor speed adjustment system. Based on comprehensive analysis over operating characteristics of a permanent magnet synchronous motor, a multivariable feedback linearization control strategy for the variable frequency pump controlled motor speed adjustment system is put forward from a decoupling control angle; a mathematical model is built, an original nonlinear system is mapped to a simple linear system via accurate feedback linearization after system feedback linearization conditions are determined, and therefore system decoupling control is realized; poles of the system can be configured on a complex plane according to requirements, and static and dynamic performance of the system can be improved. The control strategy put forward in the invention is high in robustness against load disturbance and has control effects of short response time and high speed tracking precision; the control strategy is suitable for the variable frequency pump controlled motor speed adjustment system.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a multi-variable feedback linearization control method for a variable-frequency pump-controlled motor speed regulation system. Background technique [0002] Due to the multi-variable, nonlinear, and strong coupling characteristics of the frequency conversion pump-controlled motor speed control system, it is difficult to obtain satisfactory control effects with the traditional PID control method. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a multivariable feedback linearization control method for a variable frequency pump-controlled motor speed regulation system, which can not only solve the problems of multivariable, nonlinear, strong coupling, etc. in the system, At the same time, the workload of control parameter setting is reduced, and a good control effect is achieved. [0004] In order to a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/04H02P23/00H02P25/03
CPCH02P27/04H02P23/00H02P23/0004H02P25/03
Inventor 于霜温贻芳储建华高新浩杨扬
Owner SUZHOU INST OF INDAL TECH
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