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A Composite Control Method for Hot-press Furnace Temperature Based on Improved Time-Delay Observer

A delay observer and composite control technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as system instability, and achieve the effect of speeding up the response speed and improving the anti-disturbance performance.

Active Publication Date: 2022-04-01
HUBEI UNIV OF TECH
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Problems solved by technology

The time-delay system refers to the system with signal delay in time transmission. The delay will make the change of the controlled object lag behind the disturbance, which will easily cause the instability of the system.

Method used

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  • A Composite Control Method for Hot-press Furnace Temperature Based on Improved Time-Delay Observer
  • A Composite Control Method for Hot-press Furnace Temperature Based on Improved Time-Delay Observer

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] The specific solution of the present invention to solve the technical problem is: adopt the method of sliding mode control to quickly and accurately make the hot-press furnace system reach the required temperature, and effectively solve the problem caused by the time delay through the design of the time-delay observer. Unfavorable effects, and use the disturbance observer to complete the compensation for the system disturbance.

[0025] like figure 1 Shown is the block diagram of the composite control system of hot-press furnace temperature based on the improved time-delay observer, in which, SMC is the sliding mode controller; d(s) is the system disturbance; virtual box 1 is the disturbance observer; virtual box 2 is the delay time observer; G p (s) is the actual accused object; and are the disturbance observation,...

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Abstract

The invention relates to the field of hot-press furnace temperature control, in particular to a composite control method for hot-press furnace temperature based on an improved time-delay observer. The furnace system reaches the required temperature. Through the design of the delay observer, the adverse effects caused by the time delay are effectively solved, and the disturbance observer is used to complete the compensation for external disturbances. Compared with the conventional PI feedback , the disturbance observer can predict the disturbance in advance and actively perform disturbance compensation, which is advanced and effectively improves the anti-disturbance performance of the system.

Description

technical field [0001] The invention relates to the field of temperature control of hot-pressed furnaces, especially by establishing a delay observer and a disturbance observer, and using the method of combining the two, the system disturbance is compensated, and the adverse effects of the time delay on the system are effectively suppressed. Therefore, the stability of the system under disturbance (anti-disturbance ability) is improved, and the performance requirements of the hot-press furnace for temperature control are met. Background technique [0002] As an important part of intelligent equipment, temperature control system is widely used in industrial fields. With the development of industry and intelligent manufacturing technology, the accuracy requirements of the temperature control system have also been further improved. Whether the hot-press furnace equipment can be stably and accurately maintained at the required temperature is always an important aspect of researc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 常雨芳胡宇博严怀成张皓黄文聪张惠雯王浩源杨子潇朱自铭张凤顺朱禛浩潘风
Owner HUBEI UNIV OF TECH
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