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A closed-loop modeling method and device based on model predictive control

A technology of model predictive control and modeling method, applied in the field of control, can solve problems such as the inability to establish a stable and accurate model, and achieve the effect of a stable model and an accurate model

Active Publication Date: 2021-06-04
JIANGXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to solve the technical problem that a relatively stable and accurate model cannot be established when the system state changes

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  • A closed-loop modeling method and device based on model predictive control
  • A closed-loop modeling method and device based on model predictive control

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Embodiment Construction

[0022] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] In order to solve the above-mentioned technical problems to be solved by the present invention, in this embodiment, the present invention provides a closed-loop modeling method based on model predictive control, please refer to figure 1 , figure 1 is a schematic flow chart of a preferred embodiment of the closed-loop modeling method based on model predictive control in the present invention.

[0024] The closed-loop modeling method based on model predictive control of the present invention may comprise the following steps:

[0025] Step S1, providing a controlled object. Specifically, the controlled object is the object to be modeled in the present invention, for example, it may be an electric drive system of a new energy electric vehicle.

[0026] Step S2, setting a first PID controller for the controlled o...

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Abstract

The invention discloses a closed-loop modeling method and device based on model predictive control. The method sets a first PID controller for the controlled object before modeling the controlled object, and before performing optimal control on the system model, A second PID controller is also set for the system model, so that in the modeling stage, the output of the controlled object can correct the input of the controlled object, and in the control stage, the output of the system model can also correct the input of the system model, and then in the system state A relatively stable and accurate model can still be established under changing conditions.

Description

technical field [0001] The invention relates to the technical field of control, in particular to a closed-loop modeling method and device based on model predictive control. Background technique [0002] Model predictive control is a model-based closed-loop optimal control algorithm. The control algorithm is based on the system model, and the quality of the model affects the control effect. Therefore, in order to achieve the performance of the model predictive control algorithm, it is necessary to establish a model that can accurately describe the input and output characteristics of the system. [0003] The traditional modeling method is to input a pulse signal or a step signal to the open-loop system, and then collect the output response of the system in real time, and then use the least square method to fit the data through the output and input data of the open-loop system to obtain the system Input output model. [0004] However, in the traditional modeling method, when ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 张碧陶胡卫平
Owner JIANGXI UNIV OF SCI & TECH