Strategic Analysis and Experimental Research on Synchronization Control of Dual-Motor in Crane

2014 ◽  
Vol 644-650 ◽  
pp. 836-839
Author(s):  
Yong Qiu Liu ◽  
Xiao Feng Liu ◽  
Hai Xia Wang
Keyword(s):  
Control Strategy ◽  
Error Control ◽  
Reference Value ◽  
Synchronization Error ◽  
Synchronization Control ◽  
Strategic Analysis ◽  
Work Safety ◽  
Control Precision ◽  
Lifting System ◽  
Control Accuracy

In order to ensure work safety, large cranes generally use two motors together to upgrade the load, so often there is a synchronization error, control accuracy is affected. To address this issue, the paper crane hydraulic lifting system to study proposed control strategy based on fuzzy PID's. The results show that the method used to effectively reduce the synchronization error between the two motors to improve the control precision crane, a certain reference value.

scholarly journals Cooperative synchronization control of intelligent lifting systems with actuator failures

2018 ◽  
Vol 10 (12) ◽  
pp. 168781401881349
Author(s):  
Lijing Dong
Keyword(s):  
Data Transfer ◽  
Synchronization Error ◽  
Synchronization Control ◽  
Wireless Data ◽  
Hydraulic Actuators ◽  
Actuator Failures ◽  
Distributed Controller ◽  
Transfer Unit ◽  
Distributed Synchronization ◽  
Lifting System

Synchronization of a large-scale lifting system with hydraulic actuator failures is investigated in this article. The lifting system is composed of multiple intelligent lifting subsystems with hydraulic actuators, wireless data transfer unit, and distributed controller. During the lifting process, the hydraulic actuators are possible to be malfunctioned. Once actuator failure occurs, the number of lifting points and the communication topology would change over different time intervals. This article proposes a distributed synchronization control method and adopts switching technique in analyzing the lifting synchronization. The distributed controller is designed with information received from around subsystems through wireless data transfer unit rather than with direct reference signal from the control station. On the basis of Lyapunov stability theory and switched technique, sufficient conditions that guarantee the synchronization of the lifting system with actuator failures are achieved, and synchronization errors can be reduced as small as desired. Finally, the effectiveness of proposed distributed synchronization controller is verified by numerical simulations conducted on AMESim platform. From the simulation results, it can be seen that when actuator failures occur, the synchronization error of the remaining lifting subsystems is less than 5%. The lifting synchronization error shrinks to 5% in 5.87 s when a broke-down subsystem returns to normal.

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

scholarly journals Hierarchical Synchronization Control Strategy of Active Rear Axle Independent Steering System

2020 ◽  
Vol 10 (10) ◽  
pp. 3537
Author(s):  
Bin Deng ◽  
Han Zhao ◽  
Ke Shao ◽  
Weihan Li ◽  
Andong Yin
Keyword(s):  
Control Strategy ◽  
Rear Axle ◽  
Rear Wheel ◽  
Steering System ◽  
Synchronization Error ◽  
Synchronization Control ◽  
Steering Wheel ◽  
Disturbance Rejection Control ◽  
Steering Mechanism ◽  
Uncertain Disturbances

The synchronization error of the left and right steering-wheel-angles and the disturbances rejection of the synchronization controller are of great significance for the active rear axle independent steering (ARIS) system under complex driving conditions and uncertain disturbances. In order to reduce synchronization error, a novel hierarchical synchronization control strategy based on virtual synchronization control and linear active disturbance rejection control (LADRC) is proposed. The upper controller adopts the virtual synchronization controller based on the dynamic model of the virtual rear axle steering mechanism to reduce the synchronization error between the rear wheel steering angles of the ARIS system; the lower controller is designed based on an LADRC algorithm to realize an accurate tracking control of the steering angle for each wheels. Experiments based on a prototype vehicle are conducted to prove that the proposed hierarchical synchronization control strategy for the ARIS system can improve the control accuracy significantly and has the properties of better disturbances rejection and stronger robustness.

The Development of the Synchronous Control Technology on Four-Channel Lifting Device

2016 ◽  
Vol 693 ◽  
pp. 1826-1833
Author(s):  
Ai Wu Yu ◽  
Chuan Min Zhu
Keyword(s):  
Control System ◽  
Experimental System ◽  
Synchronization Control ◽  
Control Technology ◽  
Synchronous Control ◽  
Compensation Control ◽  
Control Precision ◽  
Simulation Results ◽  
Set Up ◽  
Control Accuracy

Motor synchronous control technology has been widely used in lifting device. The effect of Synchronous control technology to improve the precision is becoming more and more attention both at home and abroad. Based on the four channels winding ascension, we design a deviation coupling based on principle of displacement compensation control system, and use Matlab/Simulink for simulation, and research the influence law of different parameters on synchronization control accuracy. The simulation results confirmed that the strategy can satisfy the control precision. Finally, we set up the experimental system to verify the feasibility and practicability of the synchronous control system.

Dual Hydraulic Cylinders Synchronized Control Strategy

2014 ◽  
Vol 898 ◽  
pp. 546-549
Author(s):  
Li Ping Liu
Keyword(s):  
Control Strategy ◽  
Pid Control ◽  
Single Neuron ◽  
Control Method ◽  
Synchronization Control ◽  
Depth Study ◽  
Hydraulic Cylinders ◽  
Single Neuron Pid ◽  
Lifting System ◽  
Synchronization Accuracy

Through the double cylinder synchronous lifting system in-depth study presents a master-slave control method and the single neuron PID control strategy for controlling synchronization accuracy. Simulation results show that this method can achieve higher precision synchronization control.

Longitudinal and lateral collision avoidance control strategy for intelligent vehicles

2021 ◽  
pp. 095440702110240
Author(s):  
Ziyu Zhang ◽  
Chunyan Wang ◽  
Wanzhong Zhao ◽  
Jian Feng
Keyword(s):  
Real Time ◽  
Collision Avoidance ◽  
Decentralized Control ◽  
Control Strategy ◽  
Centralized Control ◽  
Lateral Control ◽  
Time Performance ◽  
Collision Avoidance Control ◽  
Avoidance Control ◽  
Control Accuracy

In order to solve the problems of longitudinal and lateral control coupling, low accuracy and poor real-time of existing control strategy in the process of active collision avoidance, a longitudinal and lateral collision avoidance control strategy of intelligent vehicle based on model predictive control is proposed in this paper. Firstly, the vehicle nonlinear coupling dynamics model is established. Secondly, considering the accuracy and real-time requirements of intelligent vehicle motion control in pedestrian crossing scene, and combining the advantages of centralized control and decentralized control, an integrated unidirectional decoupling compensation motion control strategy is proposed. The proposed strategy uses two pairs of unidirectional decoupling compensation controllers to realize the mutual integration and decoupling in both longitudinal and lateral directions. Compared with centralized control, it simplifies the design of controller, retains the advantages of centralized control, and improves the real-time performance of control. Compared with the decentralized control, it considers the influence of longitudinal and lateral control, retains the advantages of decentralized control, and improves the control accuracy. Finally, the proposed control strategy is simulated and analyzed in six working conditions, and compared with the existing control strategy. The results show that the proposed control strategy is obviously better than the existing control strategy in terms of control accuracy and real-time performance, and can effectively improve vehicle safety and stability.

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.

scholarly journals A Fuzzy Logic-Based Control Algorithm for the Recharge/V2G of a Nine-Phase Integrated On-Board Battery Charger

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 946 ◽  
Author(s):  
Felice De Luca ◽  
Vito Calderaro ◽  
Vincenzo Galdi
Keyword(s):  
Fuzzy Logic ◽  
Control Strategy ◽  
Energy Demand ◽  
Fuzzy Logic Controller ◽  
Fuzzy Controller ◽  
Energy Resource ◽  
Reference Value ◽  
Active Role ◽  
Effective Control ◽  
Battery Charger

Energy demand associated with the ever-increasing penetration of electric vehicles on worldwide roads is set to rise exponentially in the coming years. The fact that more and more vehicles will be connected to the electricity network will offer greater advantages to the network operators, as the presence of an on-board battery of discrete capacity will be able to support a whole series of ancillary services or smart energy management. To allow this, the vehicle must be equipped with a bidirectional full power charger, which will allow not only recharging but also the supply of energy to the network, playing an active role as a distributed energy resource. To manage recharge and vehicle-to-grid (V2G) operations, the charger has to be more complex and has to require a fast and effective control structure. In this work, we present a control strategy for an integrated on-board battery charger with a nine-phase electric machine. The control scheme integrates a fuzzy logic controller within a voltage-oriented control strategy. The control has been implemented and simulated in Simulink. The results show how the voltage on the DC-bus is controlled to the reference value by the fuzzy controller and how the CC/CV charging mode of the battery is possible, using different charging/discharging current levels. This allows both three-phase fast charge and V2G operations with fast control response time, without causing relevant distortion grid-side (Total Harmonic Distortion is maintained around 3%), even in the presence of imbalances of the machine, and with very low ripple stress on the battery current/voltage.

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