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Speed loop control parameter setting method and device

A technology for parameter tuning and parameter control, which can be used in control systems, AC motor control, and estimation/correction of motor parameters. It can solve problems such as large errors, complex actual models, and low applicability.

Active Publication Date: 2019-05-03
XIAMEN HUALIAN ELECTRONICS CO LTD
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Problems solved by technology

[0003] There are two commonly used methods for speed loop PI control parameter tuning: (1) model-based theoretical formula calculation method, the control performance is determined by the accuracy of the modeling, the actual model is complex and has large errors; (2) experience-based tuning method requires Setting rules are formulated according to different application needs and professional experience, and the control performance is determined by professional experience, with low applicability and low efficiency

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  • Speed loop control parameter setting method and device
  • Speed loop control parameter setting method and device
  • Speed loop control parameter setting method and device

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Embodiment Construction

[0029] In order to describe the technical content, structural features, objectives and effects of the present invention in detail, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] see figure 1 , is a schematic flowchart of a speed loop control parameter tuning method in the first embodiment of the present invention, and the method includes the following steps.

[0031] Step S10, according to the theoretical calculation formula (1) of the motor speed loop parameter, determine the theoretical value of the proportional parameter and the theoretical value of the integral parameter of the speed loop PI controller, as the initial value of the proportional parameter and the initial value of the integral parameter for speed loop parameter tuning.

[0032]

[0033] in, is the theoretical value of the proportional parameter, is the theoretical value of the integral parameter, is the initial value of ...

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Abstract

The invention discloses a speed loop control parameter setting method and device. The method comprises the following steps: determining a proportional parameter theoretical value (shown in the description) and an integral parameter theoretical value (shown in the description) of a speed ring PI controller according to a motor speed ring parameter theoretical calculation formula as a proportional parameter initial value (shown in the description) and an integral parameter initial value (shown in the description) for the setting of a speed ring; determining a minimum evaluation value of an errorintegral performance evaluation function in an iteration direction according to the proportional parameter initial value (shown in the description), the integral parameter initial value (shown in thedescription), and the set iteration step and formula, and obtaining a corresponding integral parameter and a corresponding proportion parameter when the minimum evaluation value is not larger than apreset threshold value. Through the method, the speed loop control parameter setting effect is improved, and the method does not depend on a model of a motor system, is wider in application range, iseasy for operation, and is high in setting efficiency.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a speed loop control parameter setting method and device. Background technique [0002] AC synchronous motor speed control usually adopts speed PI controller, including proportional parameter (P) and integral parameter (I). Since different applications have different performance requirements, in order to achieve good control performance, it is usually necessary to readjust the speed loop according to application requirements. PI control parameters. [0003] There are two commonly used methods for speed loop PI control parameter tuning: (1) model-based theoretical formula calculation method, the control performance is determined by the accuracy of the modeling, the actual model is complex and has large errors; (2) experience-based tuning method requires Setting rules are formulated according to different application needs and professional experience, and the control perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/00H02P23/14H02P25/022
Inventor 林晓词陈虢许荣再
Owner XIAMEN HUALIAN ELECTRONICS CO LTD
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