The Simulation Research on Pressure Control System of the High-Speed Train's Carriage

2011 ◽  
Vol 120 ◽  
pp. 547-550
Author(s):  
Xiao Ming Hou ◽  
Xing Juan Zhang
Keyword(s):  
Control System ◽  
High Speed ◽  
Fuzzy Controller ◽  
Control Program ◽  
Pressure Control ◽  
Simulation System ◽  
Control Technology ◽  
Simulation Research ◽  
Digital Pressure ◽  
Pressure Control System

A kind of digital pressure control project is put forward to solve the problem of pressure fluctuation inside the carriage by using the experience of airplane's pressure control system. Based on the pressure difference monitored between the inside and outside of the carriage, the control signal is output to the actuator by the controller, according to the control program set in it, in order to stabilize the pressure in the carriage. After the mathematical models of the main parts of the control system are found, a mathematical model of the whole system is established. Fuzzy control technology is applied in the new control system. The fuzzy controller is designed by using the matlab software, and then the simulation system is constructed. It is proved practical by the simulation result.

Research on Airbags Overturning Device due to the PID Closed-Loop Control Technology

2013 ◽  
Vol 313-314 ◽  
pp. 395-398
Author(s):  
De Qiang Zhang ◽  
Li Ying Su ◽  
Duo Xing Zhao
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Pressure Sensors ◽  
Pressure Control ◽  
Closed Loop Control ◽  
Control Technology ◽  
Real Time Control ◽  
Loop Control ◽  
Time Control ◽  
Pressure Control System

Based on S7-200 PLC, pressure sensors and amplifiers, this paper uses PID instruction to establish the closed-loop pressure control system of the required thrust in turning airbags. So in the automatic overturning airbags, it is capable to real-time control the push rods running status.

Study on Fuzzy Immune PID Controller for Main Steam Pressure Control System in Marine Steam Power Plant

2014 ◽  
Vol 686 ◽  
pp. 89-94
Author(s):  
Peng Wang ◽  
Meng Hao ◽  
Qing Zhou Ji
Keyword(s):  
Control System ◽  
Power Plant ◽  
Pid Controller ◽  
Fuzzy Controller ◽  
Pressure Control ◽  
Steam Pressure ◽  
Steam Power ◽  
Steam Power Plant ◽  
Pressure Control System ◽  
Main Steam

The main steam pressure control system in marine steam power plant has the characteristics of time-varying, nonlinear and strong coupling. In order to get satisfactory control effect, we propose a fuzzy immune PID controller with which we can make comprehensive utilization of advantages of artificial immune, PID and fuzzy controller. We build up mathematical model of main steam pressure control system, carry out simulation and comparison. The results prove that fuzzy immune PID controller can significantly reduce the overshoot and settling time of main steam pressure. It is more effective in main steam pressure control system than PID controller.

Research on Pressurizer Pressure Control System of 900MW Pressurized Water Reactor Nuclear Power Plant

2013 ◽  
Vol 718-720 ◽  
pp. 1215-1220
Author(s):  
Guo Duo Zhang ◽  
Xu Hong Yang ◽  
Si Yu Qiao ◽  
Yu Jun Wu
Keyword(s):  
Control System ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Control Method ◽  
Pressure Control ◽  
Sharp Change ◽  
Control Technology ◽  
Pressurized Water ◽  
Pressure Control System

It is of vital importance for the pressurizer to maintain the pressure of primary coolant because the sharp change of coolant pressure has a direct impact on the security of reactor. The study of pressurizers pressure control method is highly important and meaningful. This paper presents the researching and designing on pressure control system of a pressurizer implemented in a nuclear power plant. Both the present situation of the nuclear power and some relevant background have been briefly introduced. Proceeding on the records of simulation, we succeed in establishing the applied modeling of pressurizer and further propose the PID control technology working as control algorithm. The best set of controller parameters are chosen through comparing the results including regulation time, overshoot suppression and stability. On the base of such control method, we attempt to add neural network control technology to achieve further improvement, which turns out available and satisfying.

A Linear Interpolation Fuzzy Controller for a Boiler Pressure Control System

2013 ◽  
Vol 46 (5) ◽  
pp. 650-654 ◽  
Author(s):  
Yanhong BAI ◽  
Zhijuan ZHAO ◽  
Zhiyi SUN ◽  
Long QUAN
Keyword(s):  
Control System ◽  
Fuzzy Controller ◽  
Pressure Control ◽  
Linear Interpolation ◽  
Pressure Control System

Design and Implement of a Low Cost Drop-on-Demand Inkjet Printing System

2013 ◽  
Vol 819 ◽  
pp. 317-321
Author(s):  
Zi Yuan Wei ◽  
Sen Yang Wu ◽  
Yong He ◽  
Jian Zhong Fu
Keyword(s):  
Control System ◽  
Inkjet Printing ◽  
High Speed ◽  
Low Cost ◽  
Ccd Camera ◽  
Pressure Control ◽  
Observation System ◽  
Drop On Demand ◽  
Pressure Control System ◽  
Printing System

Nowadays, drop-ondemand inkjet printing technology has shown its potential in many fields. This paper presents designing and implementing of a low cost drop-ondemand inkjet printing system. Inkjet printing system can be divided into four parts, and back pressure control system and droplet observation system are two key components, both of which are described in details. In order to have a further control of accuracy and stability of the system, this paper discusses the parameters designed in the system. In pressure control system, the designed system has higher accuracy compared with the Microfabs product. Images can be taken through CCD camera instead of ultra-high-speed camera by using droplet observation system. Some experiments also have been done to verify the feasibility of the device. Accuracy of pressure control, stability of the system and reproducibility of inkjet process can be verified from the experiment.

The Simulation Research of High-Speed Motorized Spindle Vector Control System with a Fuzzy Speed Controller

2013 ◽  
Vol 694-697 ◽  
pp. 1864-1868
Author(s):  
Ke Zhang ◽  
Zhi Xue Liu ◽  
Li Xiu Zhang ◽  
He Wang ◽  
Yu Hou Wu
Keyword(s):  
Control System ◽  
Vector Control ◽  
High Speed ◽  
Closed Loop ◽  
Control Method ◽  
Fuzzy Controller ◽  
Motorized Spindle ◽  
Simulation Research ◽  
Short Period ◽  
Vector Control System

The quality of high-speed machining workpiece is determined by drive control performance of motorized spindle. Vector control is one of high-speed motorized spindle control method, but the traditional controller is difficult to effectively overcome parameter disturbances caused by parameter variations from internal and external system. So it is necessary to use intelligent control. In this paper, a model of a speed and flux-closed-loop vector control system with an inner torque-closed loop is established, and a fuzzy controller is used to adjust the speed. MATLAB is used for load simulation of high-speed segment of motorized spindle, and then the simulation results show that high-speed motorized spindle can be increased in to the high-speed segment using a short period of time, and it has strong anti-interference ability and excellent performance at the same time in the control system presented in this paper.

PRESSURE CONTROL SYSTEM AT CEMENTATION OF WELLS

2017 ◽  
pp. 62-67
Author(s):  
V. G. Kuznetsov ◽  
O. A. Makarov
Keyword(s):  
Control System ◽  
Oil And Gas ◽  
Pressure Control ◽  
Poor Quality ◽  
Technical Solution ◽  
Cement Slurry ◽  
Automated Control ◽  
Injection Speed ◽  
Pressure Control System ◽  
Effective Life

At cementing of casing of oil and gas wells during the process of injecting of cement slurry in the casing column the slurry can move with a higher speed than it’s linear injection speed. A break of continuity of fluid flow occurs, what can lead to poor quality isolation of producing formations and shorten the effective life of the well. We need to find some technical solution to stabilize the linear velocity of the cement slurry in the column. This task can be resolved with an automated control system.

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