Technique of Digital Electro Hydraulic Automatic Control of Hydro Mechanical Transmission

2011 ◽  
Vol 383-390 ◽  
pp. 3493-3498
Author(s):  
Juan Wang ◽  
Guang Li Zhou
Keyword(s):  
Control System ◽  
Automatic Control ◽  
High Speed ◽  
Digital Signal ◽  
Slide Valve ◽  
Mechanical Transmission ◽  
Heavy Vehicle ◽  
Pressure Regulation ◽  
Drive Circuit ◽  
Shift Clutch

Based on a high speed electromagnetism valve and a two side throttle slide valve, a digital shift pressure regulation valve was designed. The electromagnetism valve was driven directly by the digital signal of electricity control system, the automatic shifting and the pressure’s real time regulation of shift clutch was achieved. The principle of the electricity control system was stated, based on the characteristic of the electromagnetism valve, the drive circuit was designed. The digital electro hydraulic automatic control system was installed on the heavy vehicle with hydro mechanical transmission, and tested. According to the test data of shift process, the control strategy is analyzed, and the validity and feasibility of the control system is proved.

A Polarization Stabilization Control System Based on DSP

2014 ◽  
Vol 631-632 ◽  
pp. 806-810 ◽  
Author(s):  
Qing Xiang Hou ◽  
Xue Guang Yuan ◽  
Yan Gan Zhang ◽  
Jin Nan Zhang
Keyword(s):  
Control System ◽  
Digital Signal Processor ◽  
High Speed ◽  
Particle Swarm Optimization Algorithm ◽  
Low Frequency ◽  
Digital Signal ◽  
Rf Power ◽  
Swarm Optimization ◽  
Modified Particle Swarm Optimization ◽  
Stabilization Control

A polarization stabilization control system based on digital signal processor (DSP) is proposed in this paper. The system uses low frequency radio frequency (RF) power as control signal for polarization stabilization, and it does not need high-speed circuit to track fast polarization change. Modified particle swarm optimization algorithm is utilized and the effectiveness of polarization stabilization control is experimentally verified.

scholarly journals IMPROVEMENT OF AUTOMATIC CONTROL SYSTEM FOR HIGH -SPEED CURRENT COLLECTORS

2017 ◽  
Vol 5 (3) ◽  
pp. 108-113
Author(s):  
O. A. Sidorov ◽  
◽  
V. N. Goryunov ◽  
A. S. Golubkov ◽  
◽  
...  
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
High Speed ◽  
Current Collectors

THE WAYS TO IMPROVE THE SUBSIDIARY ELECTRIC DRIVE OF HIGH-SPEED ELECTRIC STOCK

2018 ◽  
pp. 121-131
Author(s):  
Elena Makarova ◽  
Stanislav Telichenko ◽  
Ildar Shakirov ◽  
Alexander Trifanov ◽  
Alexander Ivanov ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Computer Model ◽  
Electric Drive ◽  
High Speed ◽  
Practical Importance ◽  
Automatic Control Systems ◽  
Research Findings

Objective: To improve the subsidiary electric drive of high-speed electric stock by applying asynchronous drive frequency regulator. Methods: Fuzzy logic concepts were applied for an automatic control system regulator. Results: A computer model of the regulator was developed and the results of modeling were presented in the form of optimization process of load moment stepped variation by the control system with standard and fuzzy logic controllers. Practical importance: On the basis of the introduced computer model, transient analysis is possible in automatic control system of the subsidiary electric drive of the high-speed electric stock. The research findings may be used in the design of new and retrofit of the existing automatic control systems of the subsidiary electric drive with improved characteristics of control performance.

Key Technologies and Application of Automatic Control System for Wide Stainless Steel Hot Strip Rolling Line

2012 ◽  
Vol 572 ◽  
pp. 187-192
Author(s):  
Da Zhi Zhang ◽  
Ming Kang ◽  
Wei Zhao
Keyword(s):  
Stainless Steel ◽  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
High Speed ◽  
System Structure ◽  
Design System ◽  
Strip Line ◽  
Hot Strip ◽  
Design Ideas

Wide stainless steel hot strip line integrated with mechanical electric hydraulic equipments is a complicated large system. Automatic control system is very important for improving mill efficiency and products quality. The new equipments and technology are introduced. The characteristics of hot strip line and its requests for automation, the ideas of control system design, system structure and configuration are explained in detail. Multilevel system, 1000M high speed fabric Ethernet between levels, 640M high speed global data memory network between controllers, high speed Profibus_DP network between controller and equipments, hot machine backup strategy of L2,Tri-cyclic fabric Ethernet redundancy of L1 and other innovative design ideas,and L2 main mathematic models, L1 key control models are all applied in the system. The design ideas of this paper and integrated automatic control system has been applied on several stainless steel hot strip lines.

Automatic control system for regulating the temperature of the draw rolls in high-speed spinning-stretching of Capron yarn

1973 ◽  
Vol 5 (2) ◽  
pp. 201-203
Author(s):  
E. I. Fandeev ◽  
V. P. Ivanchenko ◽  
N. I. Sukharev ◽  
E. G. Podushkin ◽  
E. A. Ro
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
High Speed

scholarly journals Complementary Cooperation of Dual Power Circuits to Drive Aactive Magnetic Bearings

2018 ◽  
Vol 8 (8) ◽  
pp. 1270 ◽  
Author(s):  
Hsin-Lin Chiu ◽  
Nan-Chyuan Tsai
Keyword(s):  
High Speed ◽  
Pulse Width Modulation ◽  
Digital Signal ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Neutral Position ◽  
Digital Controllers ◽  
Driving Mode ◽  
Drive Circuit ◽  
Compact Design

A compact-design hybrid power amplifier for AMB (active magnetic bearing) units, named as dual cooperative drive circuit (DC2), is designed and verified by intensive experiments. DC2 can operate under dual mode: either digital driving mode (DDM) or analog driving mode (ADM). By taking advantages of the complementary cooperation between DDM and ADM, the proposed DC2 manifests its superiorities mainly in three aspects: (i) Compared to a traditional 2-level PWM (pulse width modulation) drive circuit, the improvement degree of reducing the amplitudes of current ripples is up to 62%. (ii) By taking advantages of mutually complementary cooperation between DDM and ADM, the steady-state errors of output current, which is exerted to the coils of AMBs, can be much reduced by DC2. (iii) DC2 can provide a high-current slew rate so that the response of AMBs is fast and quick enough to regulate the high-speed rotor back to the neutral position within a very short time period below 0.40 ms. In addition, the proposed DC2 is particularly suitable to be compliant with digital controllers and DSPs (digital signal processors) since the commands or drive sequences are all in DC (direct current) manner.

scholarly journals OPTIMAL CONTROL OF AN ACTUATOR OF A ROBOTIC GEARBOX

2021 ◽  
Vol 1 (92) ◽  
pp. 72
Author(s):  
Alexander Gurko ◽  
Mykola Mykhalevych
Keyword(s):  
Optimal Control ◽  
Control System ◽  
High Speed ◽  
Performance Criterion ◽  
Optimal Controller ◽  
Mechanical Transmission ◽  
Linear Quadratic ◽  
Weighting Factors ◽  
Dc Motors ◽  
The Impact

Problem. Despite the vigorous development of electric vehicles, the task of facilitating the driver to handle with elements of mechanical transmission remains relevant. For this purpose, the automation of mechanical transmission units is performed. For instance, so-called robotic gearboxes are widespread. The principle of operation of such gearboxes is similar to mechanical ones, but special separate actuators carry out the selection and shifting into the desired gear. The design of a robotic gearbox was proposed at the Automobile Department of Kharkiv National Automobile and Highway University. At this gearbox, two DC motors are used as actuators. The efficiency of this gearbox largely depends on the efficiency of the DC motors control system, which should provide smooth but at the same time fast and accurate positioning of their shafts. In previous works, PID controllers were used to controlling the actuator of the gearbox. However, although the PID controller provides satisfactory quality of the control system, it is not an optimal controller. Goal. The goal of this paper is to develop an optimal controller for the actuators of the robotic gearbox mentioned above. Methodology. To meet this goal, it was proposed to use a linear-quadratic controller (LQR). The analysis of the impact on transient processes in the control system of the values of the weighting factors in the quadratic performance criterion is performed. Results. The LQR synthesized provides high speed of response (within of 0.5 s) at the desired gear selecting and more than two times less overshoot compared to the PID regulator. Originality. The regularities in the gearbox drive performance when changing the values of the weighting factors in the performance criterion have been established. An optimal control system for the robotic gearbox actuator has been developed. Practical value. The implementation of the designed controller will increase the efficiency of the gearbox under consideration.

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