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Permanent magnet synchronous motor servo control system based on fuzzy PI control

A technology of permanent magnet synchronous motor and servo control system, which is applied in the direction of control system, control generator, vector control system, etc. It can solve the problems of insufficient precision of parts and manufacturing speed, etc., and achieve the effect of simple form and high calculation accuracy

Inactive Publication Date: 2020-11-13
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the performance of the current control system is not enough to meet the requirements of part accuracy and manufacturing speed

Method used

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  • Permanent magnet synchronous motor servo control system based on fuzzy PI control
  • Permanent magnet synchronous motor servo control system based on fuzzy PI control
  • Permanent magnet synchronous motor servo control system based on fuzzy PI control

Examples

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Embodiment 1

[0047] This embodiment provides a permanent magnet synchronous motor servo control system based on fuzzy PI control, including a current loop structure, a speed loop structure and a position loop structure set from the inside to the outside, and the speed loop structure and the position loop structure are based on fuzzy PI control The controller performs parameter control, and the current loop structure performs parameter control based on the PI controller. The data processing process of the fuzzy PI controller includes the following steps:

[0048] Data acquisition step: acquire the error and error change rate in real time;

[0049] Calculation steps of adjustment amount: perform fuzzification, fuzzy reasoning, defuzzification, and parameter correction in sequence on the error and error change rate to obtain the parameter adjustment amount;

[0050] PI control step: based on the error, the error change rate and the parameter adjustment amount, the parameter control is perform...

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Abstract

The invention relates to a permanent magnet synchronous motor servo control system based on fuzzy PI control. The system comprises a current loop structure, a speed loop structure and a position loopstructure which are arranged from inside to outside, the speed loop structure and the position loop structure perform parameter control based on a fuzzy PI controller, and the data processing processof the fuzzy PI controller comprises the following steps: 1) obtaining an error and an error change rate in real time; 2) performing fuzzification, fuzzy reasoning, defuzzification and parameter correction on the error and the error change rate in sequence to obtain a parameter adjustment amount; and 3) based on the error, the error change rate and the parameter adjustment amount, performing parameter control through a PI controller. Compared with the prior art, PI control and fuzzy control are combined to form fuzzy PI control, the anti-interference capability of the system is well improved,the steady state and dynamic performance of the system are improved, the dynamic error of the system can be effectively eliminated, and the control precision is improved.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motor servo control systems, in particular to a permanent magnet synchronous motor servo control system based on fuzzy PI control. Background technique [0002] The servo control system refers to the automatic control system whose output can quickly, effectively and accurately track the given quantity, and has always been a research hotspot in motor control technology. There are two main types of motors currently used in the electrical servo field: one is a brushless DC motor, and the other is a permanent magnet synchronous motor (PMSM for short). The advantages of PMSM are stable torque, high control precision, high efficiency, low moment of inertia and low noise. Therefore, PMSM is widely used in the field of high-performance servo. PI control has a long history and is widely used in industrial production. However, in the actual field, the controlled object often has the characteris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/18H02P21/22
CPCH02P21/001H02P21/18H02P21/22
Inventor 傅焕哲王磊
Owner TONGJI UNIV
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