Research on BLDC Control System Based on Model Prediction and Integral Separation PID Algorithms

2019 ◽  
Author(s):  
Bin Wei ◽  
Aixi Xu ◽  
Xinwen Chen ◽  
Yucheng Fu ◽  
Wei Wang ◽  
...  
Keyword(s):  
Control System ◽  
Model Prediction ◽  
Integral Separation

Research on integral separation control of warp tension based on fuzzy parameter optimization

2021 ◽  
pp. 1-14
Author(s):  
Yanjun Xiao ◽  
Zhenpeng Zhang ◽  
Zhenhao Liu ◽  
Zonghua Zhang ◽  
Wei Zhou ◽  
...  
Keyword(s):  
Control System ◽  
Control Level ◽  
Fuzzy Optimization ◽  
Optimization Theory ◽  
Tension Control ◽  
Separation Control ◽  
Control Effect ◽  
Forming Mechanism ◽  
Warp Tension ◽  
Integral Separation

In textile machines, the stability of warp tension is one of the decisive factors for the reliability, stability and product quality of weaving process. In order to meet the improving requirement for weaving efficiency and fabric quality, it is proposed that a fuzzy optimization integral separation PID warp tension control scheme based on process sampling to improve the warp tension control level of loom. Aiming at the problems of time-varying, nonlinear and variable coupling in the warp tension control system of loom, the forming mechanism of warp tension is modeled and analyzed, and the sampling scheme of warp tension based on process is proposed. Based on the periodic change of warp tension at macro level and continuous fluctuation at micro level, the integral separation control and fuzzy optimization theory are introduced to optimize the control effect of the control system on the basis of classical PID control algorithm. Finally, the simulation and experiment show that the scheme can improve the tension controls performance and effectively reduce the tension error fluctuation.

Integral Separation PID Control in the Control of Lye Concentration

2012 ◽  
Vol 627 ◽  
pp. 489-493 ◽  
Author(s):  
Liang Huang ◽  
Shi Hai Zhao ◽  
Lin Cui
Keyword(s):  
Control System ◽  
Pid Control ◽  
Pid Controller ◽  
System Simulation ◽  
Dynamic Performance ◽  
Control Performance ◽  
Integral Separation ◽  
Simulation Results

For the requirements of the lye concentration in the mercerizing process, this article is designed for the control of the lye concentration in the integral separation PID controller, the controller is based on conventional PID control, Integral separation, and further improve the performance of the PID controller, improve the accuracy of the lye concentration control system. Simulation results show that: precise characteristics of the controller's existing conventional PID controller, and integral separation PID control system overshoot, improve the dynamic performance of the control system, enables the system to achieve satisfactory control performance.

Temperature Control System Modeling and Simulation of Finishing Mill

2013 ◽  
Vol 462-463 ◽  
pp. 519-524
Author(s):  
Shui Xuan Chen ◽  
Yeni Li ◽  
Jun Zou
Keyword(s):  
Control System ◽  
Feedback Control ◽  
Temperature Control ◽  
Model Prediction ◽  
Feedforward Control ◽  
Strip Thickness ◽  
Temperature Control System ◽  
Transfer Model ◽  
Finish Rolling ◽  
Finishing Mill

The precise control for the product strip temperature is one of the effective approaches to promote the quality in the finish rolling production. The paper presents the basic features of the control strategies, temperature feedforward control and temperature feedback control for the strip temperature control system of Baosteel 2050mm finish rolling in details. Considering the strip thickness, a differential heat transfer model is proposed to calculate the heat conduction of the strip thickness direction of each node and attain multi-stand and finishing rolling exit temperature. In addition, the proposed method combined with the model prediction and feedback control, the feedforward control to adjust the rolling speed to ensure the strip head temperature hit rate dynamically adjusted using feedback control regulating water temperature of the strip full-length. The application results show that the temperature difference model prediction and feedback control accuracy is significantly improved than the original 2050mm temperature system.

A controller for safe, convenient operation of LaB6 emitters on electron-beam instruments

1983 ◽  
Vol 41 ◽  
pp. 408-409
Author(s):  
W. J. Abramson ◽  
H. W. Estry ◽  
L. F. Allard
Keyword(s):  
Electron Beam ◽  
Control System ◽  
Thermal Shock ◽  
Appropriate Care ◽  
Electron Guns ◽  
Tungsten Filaments ◽  
Order Of Magnitude ◽  
Main Components

LaB6 emitters are becoming increasingly popular as direct replacements for tungsten filaments in the electron guns of modern electron-beam instruments. These emitters offer order of magnitude increases in beam brightness, and, with appropriate care in operation, a corresponding increase in source lifetime. They are, however, an order of magnitude more expensive, and may be easily damaged (by improper vacuum conditions and thermal shock) during saturation/desaturation operations. These operations typically require several minutes of an operator's attention, which becomes tedious and subject to error, particularly since the emitter must be cooled during sample exchanges to minimize damage from random vacuum excursions. We have designed a control system for LaBg emitters which relieves the operator of the necessity for manually controlling the emitter power, minimizes the danger of accidental improper operation, and makes the use of these emitters routine on multi-user instruments.Figure 1 is a block schematic of the main components of the control system, and Figure 2 shows the control box.

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