Design of Non-smooth Synchronous Control Method for Stage Lifting Machinery

2016 ◽  
Author(s):  
Jianhui Wang ◽  
Qing Wang ◽  
Li Zhang
Keyword(s):  
Control Method ◽  
Synchronous Control

Synchronous Control Characteristics Analysis of Shield Propulsion Hydraulic System Based on Tracking Differentiator and Self-Adaptive Nonlinear PID

2021 ◽  
Author(s):  
Sen Li ◽  
XiaoHua Cao
Keyword(s):  
Pid Control ◽  
Hydraulic System ◽  
Control Method ◽  
Hydraulic Systems ◽  
Fuzzy Pid Control ◽  
Synchronous Control ◽  
Tracking Differentiator ◽  
Characteristics Analysis ◽  
Servo Tracking ◽  
Self Adaptive

Aiming at the low precision problem of multi-cylinder cooperative propulsion control in different regions of shield propulsion hydraulic systems under conditions of large load changes, this paper proposes a tracking differentiator and self-adaptive nonlinear PID (TD-NPID) control method to improve the synchronous control characteristics of shield propulsion hydraulic systems. First, the working principles of shield propulsion hydraulic systems were analyzed, and a mathematical model and TD-NPID controller were developed. Then, a simulation model was developed in AMESim-MATLAB environment, and the synchronous dynamic performances of fuzzy PID control, conventional PID control, and TD-NPID control were compared and analyzed. The results demonstrated that the shield propulsion hydraulic system with TD-NPID control had better servo tracking ability and steady-state performance than the systems with fuzzy or conventional PID control, which verified the feasibility of the application of TD-NPID control for the synchronous control of shield propulsion hydraulic systems.

A new synchronous control method for dual motor electric vehicle based on cognitive-inspired and intelligent interaction

2019 ◽  
Vol 94 ◽  
pp. 536-548 ◽  
Author(s):  
Huiyuan Xiong ◽  
Minghui Zhang ◽  
Ronghui Zhang ◽  
Xionglai Zhu ◽  
Lu Yang ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Control Method ◽  
Synchronous Control ◽  
Intelligent Interaction

scholarly journals Central pattern generator–based coupling control method for synchronously controlling the two-degrees-of-freedom robot

2019 ◽  
Vol 103 (1) ◽  
pp. 003685041987773
Author(s):  
Qiang Fu ◽  
Tianhong Luo ◽  
Chunpeng Pan ◽  
Guoguo Wu
Keyword(s):  
Central Pattern Generator ◽  
Degrees Of Freedom ◽  
Control Method ◽  
Coupling Parameter ◽  
Pattern Generator ◽  
Rhythmic Pattern ◽  
Motion Pattern ◽  
Two Degrees Of Freedom ◽  
Synchronous Control ◽  
Real Time Simulations

Synchronous control is a fundamental and significant problem for controlling a multi-joint robot. In this article, by applying two coupled Rayleigh oscillators as the referred central pattern generator models for the two joints of a two-degrees-of-freedom robot, the central pattern generator–based coupling control method is proposed for controlling the two-degrees-of-freedom robot’s joints. On these bases, the co-simulation model of the two-degrees-of-freedom robot with the proposed central pattern generator–based coupling control method is established via ADAMS and MATLAB/Simulink, and the performance of the central pattern generator–based coupling control method on synchronizing two motions of two-degrees-of-freedom robot’s joints is numerically simulated. Furthermore, the experimental setup of a two-degrees-of-freedom robot is established based on the real-time simulations system via the proposed central pattern generator–based coupling control method. And experiments are carried out on the established setup. Simulations and experimental results show that the phase of the controlled two-degrees-of-freedom robot’s joints is mutual locked to other, and their motion pattern can be adjusted through the coupling parameter in the central pattern generator–based coupling control method. In conclusion, the proposed central pattern generator–based coupling control method can control the two-degrees-of-freedom robot’s joints to produce the coordinated motions and adjust the rhythmic pattern of the two-degrees-of-freedom robot.

scholarly journals Research on Synchronous Control Method for Suppressing Nonlinear Impulse Perturbation of Photovoltaic Grid-Connected Inverter

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 22303-22313 ◽  
Author(s):  
Zhaoyan Zhang ◽  
Peiguang Wang ◽  
Fang Gao ◽  
Zhiheng Liu ◽  
Junwei Zhang ◽  
...  
Keyword(s):  
Control Method ◽  
Synchronous Control ◽  
Grid Connected Inverter

Co-Simulation Study of Synchronous Control Technology for Independent Electric Drive Vehicle

2014 ◽  
Vol 536-537 ◽  
pp. 1069-1077
Author(s):  
Heng Zhong ◽  
Wei Zhao ◽  
Yu Sun
Keyword(s):  
Electric Drive ◽  
Control Method ◽  
High Reliability ◽  
Low Cost ◽  
Control Process ◽  
Threshold Value ◽  
Motor Speed ◽  
Wheel Wear ◽  
Synchronous Control ◽  
Relationship Of

The slip-judgment method of threshold value was made for all-wheel independent electric drive vehicle through the analysis of the relationship of steering kinematics, which based on detecting speed and current of wheel-motor. The speed coordinated control of motor was used as synchronous control method. Models of vehicle dynamics and synchronous control were respectively constructed in Adams and Matlab/Simulink, which composed the model of mechanical-electric collaborative simulation. The synchronous control process of vehicle that running on bisectional road was analyzed, the result shows that synchronous control based on power control strategy reduces slip-wheel motors power consumption and increases other motors output power and torque through reducing the motor speed to average speed of normal wheel-motor. Improves the traction performance and stability of vehicle, also reduces the wheel wear and drivers control difficulty. The method has advantages of low cost, wide applicability, good controllability, high reliability etc., provide the reference of synchronization technology for independent electric drive military vehicle.

Synchronous Control of Airbag Ejection Mechanism for Underwater Logging Device

2013 ◽  
Vol 706-708 ◽  
pp. 1051-1054
Author(s):  
Chun Fang Dong ◽  
Guo Hong Feng ◽  
Juan Lu
Keyword(s):  
Control Method ◽  
Mathematic Model ◽  
Smith Predictor ◽  
Control Parameters ◽  
Robust Performance ◽  
Synchronous Control ◽  
Tuning Method ◽  
Control Scheme ◽  
Fuzzy Pi Controller ◽  
Ejection Mechanism

For the characteristics of electro-hydraulic position synchronous control system with long pipelines of the underwater logging device’s airbag ejection mechanism, the mathematic model of the single cylinder subsystem considering pipeline effect is established. On this basis, the tracking controller of subsystem is designed by combining a disturbance observer with a Smith predictor and the tuning method of control parameters is given using ITAE criterion. The fuzzy PI controller is designed based on a composite synchronous control scheme. The simulation results show that the proposed control method has good robust performance and can meet the requirement of high precision synchronous.

scholarly journals Active Synchronous Control Strategy of Distributed Power Grid Connection Based on Mobile Network

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Liu Zhang ◽  
Shaohua Ma ◽  
Yangyang Ge ◽  
Cailian Gu ◽  
Hao Wang
Keyword(s):  
Power System ◽  
Control Strategy ◽  
Control Method ◽  
Power Grid ◽  
Mobile Network ◽  
Large Power ◽  
Distributed Power ◽  
Synchronous Control ◽  
Grid Connection ◽  
Distributed Power System

This paper presents an active synchronous control scheme for distributed power grid connection based on the mobile network. This scheme avoids the disadvantages of the traditional control method, such as long waiting time and low reliability, and can meet the requirements of “the hotplug online” distributed power grid connection. The scheme uses the mobile network to collect and detect voltage slip information between the distributed power system and large power grid before operation. When the voltage slip cannot meet the requirements of grid connection, the side voltage information of the distributed power system is actively regulated. The amplitude difference and phase difference signals are, respectively, adjusted by PI, and the generated adjustment signals are, respectively, sent to the corresponding controllers through the mobile network with different weight coefficients. After the receiver receives the regulated signal, it changes the amplitude and frequency of its output voltage by shifting the pendent characteristic curve, so as to realize the distributed power system side voltage and the large power grid side voltage eventually. Finally, simulation analysis and experiments are used to verify the effectiveness and practicability of the active synchronous control strategy.

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