Re-Synchronization control strategy for master-slave controlled microgrids

2019 ◽  
Author(s):  
Alessia Cagnano ◽  
Enrico De Tuglie ◽  
Andrea Cervi ◽  
Riccardo Stecca ◽  
Roberto Turri ◽  
...  
Keyword(s):  
Control Strategy ◽  
Synchronization Control

Time-Optimal Coordination Control for the Gear-Shifting Process in Electric-Driven Mechanical Transmission (Dog Clutch) without Impacts

2020 ◽  
Vol 9 (2) ◽  
pp. 155-168
Author(s):  
Ziwang Lu ◽  
◽  
Guangyu Tian ◽  
Keyword(s):  
Control Strategy ◽  
Position Control ◽  
Control Method ◽  
Synchronization Control ◽  
Mechanical Transmission ◽  
Coordination Control ◽  
Optimal Position ◽  
Drive Motor ◽  
Time Optimal ◽  
Optimal Coordination

Torque interruption and shift jerk are the two main issues that occur during the gear-shifting process of electric-driven mechanical transmission. Herein, a time-optimal coordination control strategy between the the drive motor and the shift motor is proposed to eliminate the impacts between the sleeve and the gear ring. To determine the optimal control law, first, a gear-shifting dynamic model is constructed to capture the drive motor and shift motor dynamics. Next, the time-optimal dual synchronization control for the drive motor and the time-optimal position control for the shift motor are designed. Moreover, a switched control for the shift motor between a bang-off-bang control and a receding horizon control (RHC) law is derived to match the time-optimal dual synchronization control strategy of the drive motor. Finally, two case studies are conducted to validate the bang-off-bang control and RHC. In addition, the method to obtain the appropriate parameters of the drive motor and shift motor is analyzed according to the coordination control method.

Synchronization Control of Planar 2-Dof Robot with Redundant Actuation

2012 ◽  
Vol 468-471 ◽  
pp. 1414-1420 ◽  
Author(s):  
Jian Wei Mi ◽  
Hong Bao ◽  
Jing Li Du
Keyword(s):  
Control Strategy ◽  
Parallel Manipulator ◽  
Synchronization Control ◽  
Redundant Actuation ◽  
Model Errors ◽  
Position Measurement ◽  
Coupling Relationship ◽  
The Stability ◽  
Coupling Error ◽  
Synchronization Performance

Considering the special characteristics of the redundant parallel manipulator, with emphasis on the variable of structure, relatively small workspace and the strong coupling relationship among arms，a synchronization control strategy is presented in this paper. Since in the feedforward ,the inertial and the coriolis matrix are designed constant according to relatively small workspace, position measurement of the endeffector in plane is ignored. Synchronization error and coupling error are introduced to reject the model errors of inertial and coriolis matrix as stated above. Using the method, the errors of driving arms may be reduced, as well as synchronization performance among axes improves. The stability of the controllers was proved by Lyapunov. Finally, experimental results show the feasibility.

A Synchronous Control Strategy for Independent Multi-Motor System Based on CMAC

2012 ◽  
Vol 468-471 ◽  
pp. 115-121 ◽  
Author(s):  
Wei Min Xu ◽  
Bao Bao Ding ◽  
Rui Geng ◽  
Xian Wen Zhou
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Synchronization Control ◽  
Control Methods ◽  
Interference Immunity ◽  
Cmac Neural Network ◽  
Drive Systems ◽  
Axis Drive ◽  
Coupling Algorithm ◽  
Control Accuracy

With progress making in the art of industrial fields, control methods for synchronized multi-motor systems get more and more extensive applications, and there are increasingly high requirements for synchronous controllers. In this paper, a new control method for multi-axis drive systems is proposed, an adjacent-coupling algorithm based synchronization control strategy is designed, and a CMAC neural network based controller is developed. Simulation results show good performance of synchronization control accuracy, interference immunity, and convergence for the suggested synchronous controller

The Simulation Research of Synchronization Control Based on the Virtual Shaft Control and the Relative Coupling Control

2014 ◽  
Vol 1049-1050 ◽  
pp. 1111-1115 ◽  
Author(s):  
Huan Huan Shi ◽  
Xiao Wu ◽  
Liang Hua ◽  
Hong Gang Ji
Keyword(s):  
Control System ◽  
High Precision ◽  
Control Strategy ◽  
External Disturbance ◽  
Parameter Variation ◽  
Synchronization Control ◽  
Simulation Research ◽  
Synchronous Control ◽  
Synchronization Scheme ◽  
Main Spindle

Although the traditional synchronous control system for the virtual shaft has met the accuracy requirements of most products, it still can not fully meet the requirements, for the high precision, high synchronization control. This article proposed multi-motor synchronous control strategy based on the relative coupling control combined with virtual main spindle control, and built simulation platform by Matlab/Simulink and simulated the strategy. The simulation result shows that the synchronous control strategy mentioned in this article can overcome synchronization error brought by external disturbance and parameter variation. Moreover, it will better achieve the multi-motor synchronous control compared with the traditional virtual shaft synchronization scheme

Anti-Synchronization Control of the Complex Lu System

2014 ◽  
Vol 721 ◽  
pp. 269-272
Author(s):  
Fan Di Zhang
Keyword(s):  
Complex System ◽  
Fractional Order ◽  
Control Strategy ◽  
Stability Theorem ◽  
Projective Synchronization ◽  
Synchronization Control ◽  
Fractional Order Systems ◽  
Lü System ◽  
The Stability ◽  
Lu System

This paper propose fractional-order Lu complex system. Moreover, projective synchronization control of the fractional-order hyper-chaotic complex Lu system is studied based on feedback technique and the stability theorem of fractional-order systems, the scheme of anti-synchronization for the fractional-order hyper-chaotic complex Lu system is presented. Numerical simulations on examples are presented to show the effectiveness of the proposed control strategy.

scholarly journals Synchronization Control of Large Crawler Crane Driven by Double Winches Using Hook Angle Feedback Information

2015 ◽  
Vol 9 (1) ◽  
pp. 977-981
Author(s):  
Jun Yao ◽  
Yu Tang ◽  
Zhencai Zhu
Keyword(s):  
Control Strategy ◽  
Pid Control ◽  
Synchronization Control ◽  
Small Range ◽  
Variable Speed ◽  
Angle Sensor ◽  
Feedback Information ◽  
Control Scheme ◽  
Crawler Crane ◽  
Synchronization Performance

During the operation of a crawler crane driven by double winches, it is important to make the two winches actuate synchronously so that the hook is in a horizontal state to prevent accidents. In this paper, a novel synchronization control strategy for crawler crane driven by double winches using hook angle feedback information is proposed. The hook angle proportional to the length error of ropes is measured by a wireless angle sensor firstly and is then employed as a feedback control signal. To further improve the synchronization performance, cross-coupled control scheme together with the variable speed PID control is utilized on the basis of the collected hook angle signal. Simulations and experiments are then conducted and the results demonstrate that the proposed control scheme can obtain a better synchronization performance than the conventional control strategy using encoders and the inclination of the hook is greatly reduced to a limited small range.

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