Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Improved self-adaptive generalized predictive control method for data-driven time delay system

A technology of generalized predictive control and time-delay systems, applied in the field of adaptive control

Pending Publication Date: 2021-02-05
江康(上海)科技有限公司
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a data-driven time-delay system improved adaptive generalized predictive control method, to solve the problems mentioned above

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Improved self-adaptive generalized predictive control method for data-driven time delay system
  • Improved self-adaptive generalized predictive control method for data-driven time delay system
  • Improved self-adaptive generalized predictive control method for data-driven time delay system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0063] Embodiment: The present invention performs adaptive generalized predictive control on the central air-conditioning chilled water circulation system based on data.

[0064] Figure 5 Figure a is the effect diagram of PID control of the chilled water circulation system without time lag, and picture b is the effect diagram of PID control of the chilled water circulation system with time delay;

[0065] The chiller is one of the core equipment of the central air conditioner. Its working principle is divided into four steps: (1) The energy exchange between the refrigerant and the chilled water, the steam pressure in the evaporator is increased, the chilled water is reduced to low-temperature water, and the refrigerant becomes a high-temperature and low-pressure gas ;(2) The refrigerant changes from high-temperature and low-pressure gas to high-temperature and high-pressure gas under the drive of the compressor, and enters the cooling chamber; (3) The cooling water exchanges ...

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

No PUM Login to View More

Abstract

The invention discloses an improved self-adaptive generalized predictive control method for a data-driven time delay system, which comprises the following steps of: firstly, determining a controlled variable and a controlled variable, acquiring input and output data of a time-delay system to construct a historical database, processing abnormal data, and adopting a time-varying forgetting factor recursive least square method to establish an autoregressive integral moving average model with controlled quantity of the time delay system; designing a reference trajectory according to the expected value, solving a Diophantine equation, designing a GPC control law, and constructing an optimization performance index; and calculating and implementing the optimal control quantity, collecting input and output data, and updating a historical database. According to the invention, the time lag problem of the system can be effectively solved, the utilization rate of offline and online input and output measurement data is improved, the influence of input and output interference and abnormal data on control is effectively inhibited, and the stability and good robustness of the system are ensured.

Description

technical field [0001] The invention relates to the technical field of adaptive control, in particular to an improved adaptive generalized predictive control method for a data-driven time-delay system. Background technique [0002] In the objective world and in the actual process, time delay is a widespread phenomenon. In large-scale systems, especially in industrial process control, most of the controlled objects have strong time-delay characteristics, such as the combustion chamber of a rocket transmitter. Combustion process, molten iron process in steelmaking plant, temperature control process of distillation stage, etc., are very typical systems with time-lag characteristics in actual control. [0003] In the actual control process, most systems are more or less nonlinear and uncertain, which makes the system show different degrees of time-lag due to the influence of objective factors, and the existence of time-lag will make the control of the controlled system Therefor...

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
no application Login to View More
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 康琦包晗秋张林曲毅
Owner 江康(上海)科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com