Speed Ratio Control Study on CVT with Electrical Control and Motor as Actuator (EM-CVT)

2013 ◽  
Vol 787 ◽  
pp. 886-890
Author(s):  
Lan Chun Zhang ◽  
You Jun Ma ◽  
Shao Yi Bel
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Speed Ratio ◽  
Electronic Control ◽  
Functional Requirements ◽  
Change Characteristics ◽  
Ratio Change ◽  
Working Principle ◽  
And Control ◽  
Control Study

In this paper,a novel CVT with electronic control and a motor as actuator (EM-CVT) is presented, whose speed ratio can be adjusted by driving the two movable discs of the primary and secondary pulley at the same time. Firstly, the EM-CVT transmission dynamics mode was established based on the analysis of EM-CVT working principle and ratio change characteristics. Secondly, the speed ratio control strategy and control method for EM-CVT was designed according to the EM-CVT features and functional requirements of the control system; Finally, the simulation was carried out to verify the validity of the control strategy and meth

scholarly journals Simulation of reactive power regulation of DFIG

2021 ◽  
Vol 233 ◽  
pp. 01025
Author(s):  
Yingfeng Zhu ◽  
Xiaosu Xie ◽  
Dong Yang ◽  
Song Gao ◽  
Weichao Zhang ◽  
...  
Keyword(s):  
Wind Farm ◽  
Reactive Power ◽  
Control Method ◽  
Power Regulation ◽  
Working Principle ◽  
Power Limit ◽  
Doubly Fed ◽  
Grid Side ◽  
Grid Side Converter ◽  
And Control

Doubly fed induction generator (DFIG) wind power generation system is widely used in wind farm all over the world. Reactive power can be generated both in grid-side converter and generator-side converter of DFIG. In this paper, working principle and control method of DFIG are introduced, and the reactive power limit of DFIG is derived, finally reactive power regulation is simulated in Simulink.

scholarly journals A Secondary Reconfigurable Inverter and Its Control Strategy

2020 ◽  
Vol 10 (20) ◽  
pp. 7021
Author(s):  
Yan Li ◽  
Peng Xiang ◽  
Yandong Chen
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Fault Tolerant ◽  
Frequency Control ◽  
Semiconductor Devices ◽  
Constant Frequency ◽  
Power Semiconductor ◽  
Power Semiconductor Devices ◽  
Simulation And Experiment ◽  
And Control

This article proposes a topology of the secondary reconfigurable inverter and the corresponding fault-tolerant control strategy. When the secondary reconfigurable inverter is operating normally, its topology structure is the TPSS circuit. When the power semiconductor devices in the inverter are faulty, the inverter circuit needs to be reconfigured. After removing the faulty power semiconductor devices, the remaining power semiconductor devices and the DC side powers are reconstructed as the TPFS structure to keep the system running normally. This article also proposes a switch-pulse-resetting algorithm. This paper adopts the control strategy connecting the constant-voltage, constant-frequency control method with the switch pulse resetting algorithm. It need not change the control algorithm when the proposed reconfigurable inverter is transformed from the normal running state into the faulty running state. The inverter dependability is greatly improved. Finally, the feasibility and effectiveness of the proposed second reconfigurable inverter topology and control strategy are verified by simulation and experiment.

scholarly journals A Novel Left-Turn Signal Control Method for Improving Intersection Capacity in a Connected Vehicle Environment

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 1058 ◽  
Author(s):  
Chuanxiang Ren ◽  
Jinbo Wang ◽  
Lingqiao Qin ◽  
Shen Li ◽  
Yang Cheng
Keyword(s):  
Traffic Safety ◽  
Control Strategy ◽  
Control Method ◽  
Control Model ◽  
Signal Control ◽  
Signal Phase ◽  
Phase Duration ◽  
Left Turn ◽  
Intersection Signal Control ◽  
And Control

Setting up an exclusive left-turn lane and corresponding signal phase for intersection traffic safety and efficiency will decrease the capacity of the intersection when there are less or no left-turn movements. This is especially true during rush hours because of the ineffective use of left-turn lane space and signal phase duration. With the advantages of vehicle-to-infrastructure (V2I) communication, a novel intersection signal control model is proposed which sets up variable lane direction arrow marking and turns the left-turn lane into a controllable shared lane for left-turn and through movements. The new intersection signal control model and its control strategy are presented and simulated using field data. After comparison with two other intersection control models and control strategies, the new model is validated to improve the intersection capacity in rush hours. Besides, variable lane lines and the corresponding control method are designed and combined with the left-turn waiting area to overcome the shortcomings of the proposed intersection signal control model and control strategy.

The Study on Starting Control of ER Clutch for Vehicle

2012 ◽  
Vol 490-495 ◽  
pp. 1759-1762 ◽  
Author(s):  
Jian Hua Wang ◽  
Hao Xu ◽  
Fei Xie
Keyword(s):  
Control Strategy ◽  
Control Voltage ◽  
Start Time ◽  
Evaluation Indexes ◽  
Working Principle ◽  
Simulation Results ◽  
And Control ◽  
Start Process ◽  
Er Fluid ◽  
Starting Control

This paper proposed a new design scheme for automatic clutch of AMT which is based on electrorheological (ER) fluid. Through analyzing the working principle and its transfer characteristics of ER fluid, it discussed the start process of vehicle and control strategy of ER Clutch. By changing the control voltage, ER clutch satisfied the requirements of evaluation indexes such as start time and impact degree. The simulation results showed that the control strategy can realize starting rapidly and steadily which would meet the start requirements of economical automobiles

Experimental Study on Hydrodynamic Characteristics of Hydrofoil of the Birds Embedded in Marine Seismic Streamers

2010 ◽  
Author(s):  
Xiaoqing Zhang ◽  
Weijing Zhang ◽  
Jun Chen
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Reference Value ◽  
Attack Angle ◽  
Hydrodynamic Characteristics ◽  
Oil Exploitation ◽  
Exact Position ◽  
Marine Seismic ◽  
And Control ◽  
Important Significance

A “bird” is a device usually being used to control the depth and position of marine seismic streamers. Exact position of the streamers can effectively promote the precision, reduce the measured times and save the costs for marine seismic exploitation. So the “birds” have important significance to marine oil exploitation. A Hydrodynamic characters test concerning a new embedded bird has been introduced in this paper. And some useful hydrodynamic character-data of the hydrofoil are obtained, such as lift-attack angle diagram, resistance-attack angle diagram, torque-attack angle diagram. These data and diagrams are more helpful for studying on the embedded bird, including the control method and control strategy etc. Above all, the results of the test have significant reference value for the control of birds and marine seismic streamers.

A LCD Touch Screen Controller Based on LPC2138

2011 ◽  
Vol 383-390 ◽  
pp. 6914-6919 ◽  
Author(s):  
Jing Gao ◽  
Lian Qing Zhu ◽  
Yang Kuan Guo ◽  
Hao Meng
Keyword(s):  
Control Method ◽  
Detection System ◽  
Liquid Crystal Display ◽  
Touch Screen ◽  
High Accuracy ◽  
Erythrocyte Sedimentation ◽  
Synchronization Algorithm ◽  
Great Reliability ◽  
Working Principle ◽  
And Control

The user interface made of a LCD (liquid crystal display) screen and a touch screen based on LPC2138 is presented in this paper. The hardware design of the LCD and the touch screen is introduced and the software flow of the LCD and the touch screen is also described in this paper. And this paper proposes the synchronization algorithm which can achieve the LCD and the touch screen point by point with high accuracy and great reliability. On the basis of analyzing the principle of the embedded touch panel system, the working principle and control method of the dedicated controller DV320240GB touch screen are analyzed. The method for obtaining the coordinates of the touch screen and the synchronization algorithm of the LCD display are proposed to improve the efficiency of the touch screen and the LCD. The above-mentioned design has been successfully applied in ESR (erythrocyte sedimentation rate) detection system.

The Working Mechanism and Control Method of GL160C Metal Belt CVT

2010 ◽  
Vol 139-141 ◽  
pp. 1856-1859
Author(s):  
Lei Zhang ◽  
Xiu Min Yang ◽  
Tao Wei ◽  
Ying Di Shi
Keyword(s):  
Control Method ◽  
Bench Test ◽  
Speed Ratio ◽  
Clamping Force ◽  
Working Mechanism ◽  
Variable Transmission ◽  
Vehicle Test ◽  
The Stability ◽  
And Control ◽  
The Mathematical Model

On the foundation of the analysis of the working mechanism of the GL160C continuously variable transmission (CVT), the mathematical model of the axial clamping force of the driving and driven pulleys are constructed. The relationship between the pressure of the driving and driven cylinders and the speed ratio of the CVT are derived while the CVT is transmitting the unit torque. The control method of the axial clamping force between the driving and driven pulleys, the control model of the CVT speed ratio are given. The following conclusions are drawn from the bench test and integral vehicle test: the acceleration performance and the stability of the speed ratio of the GL160C CVT are good, the power output is stable and reliable, the controller could achieve every functional requirement, all of which could guarantee that the output of the engine could run as the designed ideal dynamic curve and the ideal economical curve.

Control Strategy of Energy Saving Based on Intelligence-Fusion in Water Supply Engineering

2013 ◽  
Vol 401-403 ◽  
pp. 1822-1825
Author(s):  
De Qi Ren
Keyword(s):  
Water Supply ◽  
Energy Saving ◽  
Control Strategy ◽  
Comparative Research ◽  
Control Algorithm ◽  
Control Method ◽  
Pressure Control ◽  
Pressure Control System ◽  
And Control ◽  
Better Than

Aimed at the puzzle that it is heavy in energy consumption and not better in water quality to water supply engineering resulted in inappropriate control strategy, the paper explored the energy saving strategy and control mechanism of water supply system. In the paper, it discussed the cybernetics characteristic of water supply process, proposed the intelligence-fusion based control strategy and the energy saving executing strategy, and analyzed the control model of water supply purifying process and the control algorithm of constant pressure control system. The comparative research of simulation demonstrated that the proposed strategy would be better than conventional PID control method. The simulation results show that the strategy combined intelligence-fusion based control with speed control by inverter has better application prospect.

Speed Ratio Control Study on CVT with Electrical Pulley Actuation System

2010 ◽  
Vol 39 ◽  
pp. 342-346 ◽  
Author(s):  
Lan Chun Zhang ◽  
Shao Yi Bei ◽  
Jing Bo Zhao
Keyword(s):  
Control Strategy ◽  
Control Model ◽  
Speed Ratio ◽  
Theory Analysis ◽  
Control Precision ◽  
Actuation System ◽  
Control Study

The speed ratio control for an electrical CVT with speed ratio controlled by two motors located on primary and secondary pulley respectively for the variable pulley set (variator) is studied. Firstly, the speed ratio control strategy and method are designed based on the factor influenced to speed ratio control precision which is analyzed by means of combining theory analysis with experiment test; Secondly, the speed ratio control model for CVT with electrical pulley actuation system is established; Finally, the simulation is carried out to verify the validity of the control strategy and method.

Composite Elbow Winding Machine Applied Teaching and Playback Method

2011 ◽  
Vol 183-185 ◽  
pp. 2249-2253 ◽  
Author(s):  
Jia Zhong Xu ◽  
Ming Qiao ◽  
Li Yong Zhang ◽  
Dan Liu
Keyword(s):  
Control System ◽  
Industrial Application ◽  
Control Method ◽  
Reciprocating Motion ◽  
Teaching Mode ◽  
Mechanical Structure ◽  
Working Principle ◽  
Winding Machine ◽  
Rotation Motion ◽  
And Control

Multi-axis winding machine can realize automatic winding of composite elbow, but its mechanical structure and control system is complex, which restricts its industrial application. In this paper, two-axis FRP elbow winding machine applied teaching and playback method is designed, which accomplish the winding of elbow by controlling the rotation motion of the mandrel and the reciprocating motion of the carriage along a semicircular track. In teaching mode, the positions of spindle and carriage are collected and stored as teaching document when the spindle rotates a certain angle, while in playback mode the control method of electronic cam is applied to realize the playback winding. The mechanical structure and the working principle of elbow winding machine are introduced, and the control system of winding machine is analyzed. It is proved that the system is stable, and it can wind certain type of composite elbows.

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