Electric Cylinder Control Driving Method Based on 3-DOF Rotor Attitude Simulator

2018 ◽  
Author(s):  
Jun Sheng ◽  
Jingjing Mu ◽  
Jianping Xu ◽  
Jianze Liu ◽  
Dongdong Li
Keyword(s):  
Electric Cylinder

Research on Optimization of the Electric Cylinder Buffer Made in Polyurethane

2013 ◽  
Vol 813 ◽  
pp. 108-111
Author(s):  
Yun Lu ◽  
Wei Jia Li ◽  
Xiao Wang ◽  
Jian Feng Li
Keyword(s):  
Mechanical Tests ◽  
Simulation Software ◽  
Nonlinear Material ◽  
Light Industry ◽  
Compact Structure ◽  
Element Simulation ◽  
Electric Cylinder ◽  
Process Ability ◽  
Made In ◽  
Maximum Deceleration

The buffer made with polyurethane is widely used in light industry, automotive industry and mechanical industry especially in the electric cylinder of small and medium sizes because of its compact structure, economics and process ability convenient. Firstly, the properties of nonlinear material and the constitutive relation of the polyurethane were analyzed, above on which the compression and shear tests of the polyurethane material were conducted to determine its physics parameters. Then the mechanical tests of polyurethane material were simulated in the finite element simulation software ABAQUS by input the parameters obtained from the mechanical tests. The parameters were proved to be correct by the testimony of the result of the simulation and the mechanical tests. Then buffers of different sizes with practical condition were simulated. During the simulation, this paper researched the maximum deceleration of the mass block in models with different sizes of polyurethane buffers. Lastly, the size of the buffer with minimum volume which is agreed with the request of the maximum deceleration of the mass block is obtained by data handling, above on which a database was built.

scholarly journals Nonsingular Fast Terminal Sliding Mode Control with Extended State Observer and Disturbance Compensation for Position Tracking of Electric Cylinder

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Duoyang Li ◽  
Junzheng Wang
Keyword(s):  
Sliding Mode ◽  
State Observer ◽  
Measurement Noise ◽  
Extended State Observer ◽  
Position Tracking ◽  
Extended State ◽  
Terminal Sliding Mode ◽  
Output Measurement ◽  
Fast Terminal Sliding Mode ◽  
Electric Cylinder

The position tracking problem of the electric cylinder, which has internal perturbation, external disturbance, and measurement noise of the output, is studied in this paper. A control method is proposed for achieving high tracking accuracy and tracking velocity for the wheel-legged robot application. Nonsingular fast terminal sliding mode (NFTSM) control is investigated to ensure that the system output can track the reference input in finite time. Besides, extended state observer (ESO) of the active disturbance rejection control (ADRC) is used to estimate the system lumped perturbation and compensated it in the controller based on the terminal sliding mode. This greatly reduces the chattering of the system caused by the gain of the sliding mode switch. Furthermore, tracking differentiator is designed to attenuate the output measurement noise. Simulation and experimental results illustrate that the NFTSM with ESO and TD algorithm, which is presented in this paper, has obvious superiority in the tracking precision and the antijam ability.

Design and Simulation for New Type Pulley Straightening Machine Based on Pro/E

2014 ◽  
Vol 989-994 ◽  
pp. 2741-2744
Author(s):  
Jin Hua Geng ◽  
Bin Yu ◽  
Bin Fan
Keyword(s):  
Rotational Speed ◽  
Stepper Motor ◽  
Motion Simulation ◽  
Positioning Accuracy ◽  
Motion Speed ◽  
New Type ◽  
Electric Cylinder

Pro/Engineer (Pro/E) was applied to design a new kind of motorcycle belt pulley straightening machine, which was composed of electric cylinder and stepper motor in this paper. The effect of positioning and correcting were achieved by the straightening machine during operation. The motion simulation for correcting key parts was done under mechanical module of the software. The mechanism motion speed and the motion trails of the straightening machine were acquired under different positioning accuracy. Through analysis on the motion trails, the best range of the correcting parts′ rotational speed can be optimized.

scholarly journals Research of Impact Load in Large Electrohydraulic Load Simulator

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Yongguang Liu ◽  
Xiaohui Gao ◽  
Zhongcai Pei
Keyword(s):  
Impact Load ◽  
Experimental Result ◽  
Actual System ◽  
Good Experimental Condition ◽  
Load Simulator ◽  
Electric Cylinder ◽  
Hardware In Loop ◽  
Hardware In Loop Simulation ◽  
The Impact ◽  
The Mathematical Model

The stronger impact load will appear in the initial phase when the large electric cylinder is tested in the hardware-in-loop simulation. In this paper, the mathematical model is built based on AMESim, and then the reason of the impact load is investigated through analyzing the changing tendency of parameters in the simulation results. The inhibition methods of impact load are presented according to the structural invariability principle and applied to the actual system. The final experimental result indicates that the impact load is inhibited, which provides a good experimental condition for the electric cylinder and promotes the study of large load simulator.

scholarly journals Research of Control Strategy in the Large Electric Cylinder Position Servo System

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Yongguang Liu ◽  
Xiaohui Gao ◽  
Xiaowei Yang
Keyword(s):  
Control System ◽  
Control Strategy ◽  
Interpolation Method ◽  
Experimental Result ◽  
Real Time Control ◽  
Combined Application ◽  
Time Control ◽  
Parameter Variations ◽  
Combined Control ◽  
Electric Cylinder

An ideal positioning response is very difficult to realize in the large electric cylinder system that is applied in missile launcher because of the presence of many nonlinear factors such as load disturbance, parameter variations, lost motion, and friction. This paper presents a piecewise control strategy based on the optimized positioning principle. The combined application of position interpolation method and modified incremental PID with dead band is proposed and applied into control system. The experimental result confirms that this combined control strategy is not only simple to be applied into high accuracy real-time control system but also significantly improves dynamic response, steady accuracy, and anti-interference performance, which has very important significance to improve the smooth control of the large electric cylinder.

PID Control Algorithm Based on Genetic Algorithm and its Application in Electric Cylinder Control

2017 ◽  
Vol 12 (3) ◽  
pp. 51-61 ◽  
Author(s):  
Geng Zhang ◽  
Xiansheng Gong ◽  
Xirui Chen
Keyword(s):  
Genetic Algorithm ◽  
Pid Control ◽  
Pid Controller ◽  
Control Algorithm ◽  
Parameter Tuning ◽  
Search Space ◽  
Control Field ◽  
Electric Cylinder ◽  
Complex Phenomena ◽  
The Mathematical Model

The traditional PID controller is simple in principle, easy to use, stable and reliable, and it is still widely used in the control field. However, for many nonlinear and lagging objects, the parameter tuning of PID controller is very important. Genetic algorithm provides a new way to optimize the parameters of PID. It uses simple coding techniques and propagation mechanisms to express complex phenomena, which is not restricted by the restriction of the search space. In this paper, the global optimization of genetic algorithm is used to optimize the parameters of PID, which can improve the performance and adaptive capability of PID controller. The mathematical model of the electric cylinder system is established, and the PID controller based on genetic algorithm is used to control the system. The simulation results verify the effectiveness of the proposed control algorithm.

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