Multi-Model Adaptation Fuzzy Control for the Deep Sea Walking Hydraulic Control System

2011 ◽  
Vol 383-390 ◽  
pp. 558-564
Author(s):  
Qing Bo Meng ◽  
Yi Xin Yin ◽  
Gui Ling Qiao
Keyword(s):  
Fuzzy Control ◽  
Pid Control ◽  
Deep Sea ◽  
Phase Plane ◽  
Control Method ◽  
Model Adaptation ◽  
Hydraulic Control ◽  
Reference Models ◽  
Multiple Reference ◽  
Hydraulic Control System

To accommodate deep sea walking wheel the complex characteristics of deep sea environment such as randomness, non-linear and variability, the algorithm of Multi-Model-Reference Adaptation Fuzzy Control is presented to run the walking wheel system steadily. This control method incorporates the multiple reference models, fuzzy control and the conventional PID control; it runs efficiently by the control compensation deduced by the error of different phase-plane zones with the guidance of reference models.

Braking characteristics integrating open working chamber model and hydraulic control system model in a hydrodynamic retarder

2018 ◽  
Vol 233 (6) ◽  
pp. 1952-1971 ◽  
Author(s):  
Hongbin Mu ◽  
Wei Wei ◽  
Lingxing Kong ◽  
Yulong Zhao ◽  
Qingdong Yan
Keyword(s):  
Control System ◽  
System Integration ◽  
Control Method ◽  
Control Parameters ◽  
Hydraulic Control ◽  
Braking Performance ◽  
Working Chamber ◽  
Braking Torque ◽  
Open Working ◽  
Hydraulic Control System

Hydraulic control system has important influence on the steady and transient braking performance of a hydrodynamic retarder. The braking characteristics of hydrodynamic retarder regulated by hydraulic control system should be investigated first, before designing and making the braking strategy and control method. The accurate and detailed braking characteristics models of open working chamber and hydraulic control system are established, integrated, and validated by steady and dynamic experimental data. Based on full factorial design experimental method, the influence of control parameters on braking performance achieving steady state is analyzed with parameter sensitivity, and the effect of control parameters on braking response characteristics is conducted. Then the influence of different tube lengths between working chamber and hydraulic control system on braking performance is discussed and analyzed. The results show the control pressure and rotor rotational speed both have significant impact on braking characteristics with obvious nonlinear, coupling, and interaction effect. The longer response time of hydraulic control system will be for the larger braking torque. Shortening the tube lengths as much as possible is needed to improve the braking torque, cooling flow rate, and system integration.

The Designment and Implenment of Fuzzy Hybrid Pid in Srm Appleller to Electric Valve

2013 ◽  
Vol 367 ◽  
pp. 405-410
Author(s):  
Guo Qing Li ◽  
Dean Zhao ◽  
Hui Jiang
Keyword(s):  
Fuzzy Control ◽  
Strong Coupling ◽  
Pid Control ◽  
Control Method ◽  
Switched Reluctance Motor ◽  
Feedback System ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
The Core ◽  
Reluctance Motor

To solve the strong coupling and nonlinear of switched reluctance motor (SRM) used in the Electric valve ,we use a fuzzy compound PID control method, and apply it to the switched reluctance motors speed control system.The simulation applys that this method combines the advantages of fuzzy control and PID control and is well applied to non-linears object.Based on the theory, we design the core to the outer loops speed feedback and inner current loops feedback system in TMS320F28335,and describe the specific hardware and software structure, morely verify the feasibilitys test. The theory can solve the problem that the traditional PID cannot meet the variation of the parameter from the electric valve.

Study on MPPT Control of the Single-Stage Grid-Connected Photovoltaic System

2011 ◽  
Vol 383-390 ◽  
pp. 3552-3560
Author(s):  
Yan Wang ◽  
Feng Lan Tian
Keyword(s):  
Fuzzy Control ◽  
Power Factor ◽  
High Power ◽  
Pid Control ◽  
Control Method ◽  
Maximum Power ◽  
Photovoltaic System ◽  
Maximum Power Point ◽  
High Power Factor ◽  
Power Point

The fuzzy control can react to the environment change quickly and keep the photovoltaic system work on its maximum power point all the time. However, the limitation in the fuzzy control itself and the characteristic of self-optimization lead to serious concussion of the system around the maximum power point. Whereas the PID control method is effective in the elimination of concussion and is easy to be realized. To tackle the problem, the fuzzy parameter self-tuning PID control method is adopted in the paper to achieve the MPPT control of PV system. The method can effectively eliminate the concussion around the maximum power point and improve the stability of the system; and achieve grid-connected operation with a high power factor in combination with the harmonic elimination PWM control of inverter. Simulation results show that the scheme has merits of simple structure, high power factor and reliable operation, etc. and is worthwhile to be popularized.

Application of Fuzzy PID Controller on Mine Local Fan

2014 ◽  
Vol 668-669 ◽  
pp. 450-453
Author(s):  
Mei Zhang
Keyword(s):  
Fuzzy Control ◽  
Pid Control ◽  
Pid Controller ◽  
Control Method ◽  
Fuzzy Pid ◽  
Gas Concentration ◽  
Fuzzy Pid Controller ◽  
The Core ◽  
Adaptive Capability ◽  
Frequency Inverter

Considering the feature of mine local ventilator, the paper proposed a kind of control method combined fuzzy control and PID control to local fan. According to the error and error change of gas concentration, the system automatically adjusted PID controller’s parameters, to having adaptive capability. The monitoring of gas concentration and frequency inverter speed control of fan can be made with the system using TMS320F2407 DSP as the core.

Research on the Adaptive Cutting Method of Roadheader

2012 ◽  
Vol 268-270 ◽  
pp. 1436-1439
Author(s):  
Wen Lin Yang ◽  
Zhong Bin Wang ◽  
Bing Lei Yan
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
Pid Control ◽  
Control Model ◽  
Hydraulic Control ◽  
Propulsive Force ◽  
Proportional Control ◽  
Constant State ◽  
Hydraulic Control System ◽  
Moving Speed

The load on the cutting boom of roadheader changes violently because of the changes of rocks hardness. The power of cutter motor is related to the hardness of rock and propulsive force. The propulsive force is determined by the moving speed of cutting boom. The hydraulic control system of arcing cylinders is an electro-hydraulic proportional control system. The adaptive control model is build by Simulink. A PID control is used and the power of cutter motor is keep at a constant state by adjusting the speed of arcing cylinders.

Research on Self-Tuning Fuzzy PID Control Strategy of Metallurgy Furnace Temperature

2012 ◽  
Vol 472-475 ◽  
pp. 3063-3066
Author(s):  
Rong Luo ◽  
Lun Wei Chen ◽  
Hong Bo Ren ◽  
Cheng Yu Liu
Keyword(s):  
Fuzzy Control ◽  
Pid Control ◽  
Control Algorithm ◽  
Control Method ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Furnace Temperature ◽  
Advantages And Disadvantages ◽  
Self Tuning ◽  
Concrete Control

Aim at the effect of the control method in traditional metallurgy furnace temperature is not good, a self-tuning fuzzy PID control method combining fuzzy control with PID control was proposed in this paper based on the analysis of the advantages and disadvantages of the PID control and fuzzy control method, and a concrete control algorithm was put forward and simulation experiment was finished. The simulation results show that the effect of the controller is good, and the control of system is fast and smoothly according to it.

A New Application of Fuzzy Control - Fuzzy Control System of Cutting Motor in Hi-Frequency Straight Welded Tube Process

2011 ◽  
Vol 58-60 ◽  
pp. 1194-1199
Author(s):  
Ning Gao ◽  
Li Peng ◽  
Lin Hai Wu ◽  
Jun Jie Jiang
Keyword(s):  
Control System ◽  
Fuzzy Control ◽  
Pid Control ◽  
Control Method ◽  
Fuzzy Controller ◽  
Dynamic Performance ◽  
Speed Control ◽  
Simulation Test ◽  
Fuzzy Control System ◽  
Welded Tube

Because of the nonlinear of the cutting motor which is used in hi-frequency straight welded tube process, this paper designs a fuzzy control method used in the speed control system of the cutting motor. Furthermore, simulation test shows the control system that uses the fuzzy controller has better performances than that of the traditional PID control, which improve the dynamic performance, disturbance restraint performance and the steady precision.

Study on Intelligent Pulp Consistency Control Strategies

2012 ◽  
Vol 518-523 ◽  
pp. 3899-3903
Author(s):  
Lin Li ◽  
Jun Tang ◽  
Guo Xiong Zhou
Keyword(s):  
Fuzzy Control ◽  
Pid Control ◽  
Control Method ◽  
Control Strategies ◽  
Variable Domain ◽  
Soft Handoff ◽  
Precise Control ◽  
Consistency Control ◽  
Uncertain Model ◽  
Pulp Consistency

As the pulp consistency system has a big lag behind with uncertain model, the precise control of the pulp consistency could be achieved by making use of the respective advantages of variable domain fuzzy control method and the PID control method based on PSO, and shifting between these two controllers by fuzzy soft handoff switch.

The Research on the Hydraulic-Control System for the Heave Compensation under the Deepwater Installation

2012 ◽  
Vol 468-471 ◽  
pp. 1806-1809 ◽  
Author(s):  
Teng Zhao ◽  
Peng Sun ◽  
Yong Ding
Keyword(s):  
Control System ◽  
Control Method ◽  
Flow Characteristics ◽  
Control Unit ◽  
Compensation System ◽  
Hydraulic Control ◽  
Load Pressure ◽  
Hydraulic Unit ◽  
Different Levels ◽  
Hydraulic Control System

Based on the heave compensation system during the installation in the deepwater, the performance of the hydraulic unit and the control unit is researched .The mathematical models which is about the flow characteristics ,the load pressure and the Mechanics balance on the hydraulic- Control system are built, and then the models are simulated by using the PID control method. The simulation results are showed under the different levels, and the best match of the control parameters is found by the different objects，to realize the intelligent designing in heave compensation system.

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