The Experts below are selected from a list of 3405 Experts worldwide ranked by ideXlab platform

Shuang-long Li - One of the best experts on this subject based on the ideXlab platform.

  • The design of the intelligent Electric Actuator control system based on variable frequency
    2013 IEEE 8th Conference on Industrial Electronics and Applications (ICIEA), 2013
    Co-Authors: Shi Zhang, Shuang-long Li
    Abstract:

    Electric Actuator is an important device to control valve. This paper analyzes the existing Electric Actuator in details and designs a control system of intelligent Electric Actuator. This system takes microprocessor as a central control component and is integrated with frequency converter, and that makes use of frequency control technology to control the opening and closing speed of the valves. A practical system is designed and tested based on the above scheme.

Jin Wang - One of the best experts on this subject based on the ideXlab platform.

  • Flexible variable-structure control for BLDCM in aero Electric Actuator
    2010 IEEE International Conference on Mechatronics and Automation, 2010
    Co-Authors: Yongjian Lv, Jin Wang
    Abstract:

    One of the key elements for the aero Electric Actuator(EA) systems is the Electric motor, the current generation systems typically use permanent magnet brushless motors, The performances of brushless DC motors(BLDCM) will directly restrict the performances of EA. A flexible variable structure(FVS) controller was designed to improve the dynamic and static performance of BLDCM. For the large state vectors, a linear control is employed to regulate. For the moderate state vectors, the nonlinear component is blended into the control signal. For very small excursions of the state vectors, the nonlinear component becomes linear component, and regulation is accomplished employing two linear controls. The simulation results show that the controller designed by the proposed method obviously improves the dynamic and static performance of BLDCM. Furthermore the control signals are smooth.

Ji Feng - One of the best experts on this subject based on the ideXlab platform.

  • Research of Variable Frequency Speed System for Intelligent Electric Actuator
    Automation and Instrumentation, 2010
    Co-Authors: Ji Feng
    Abstract:

    Intelligent Electric Actuator is a very important driven device in the industrial process control system.This paper applys step dynamic positioning technology of switched reluctance motor(SRM) into intelligent Electric Actuator’ s frequency speed control system.We briefly introduce the hardware of intelligent Electric Actuator’s speed control system which based on switched reluctance motor,focusing on system’s software.And use CCS3.1 modular platform for modular designing.In this way,can detect the position of SRM rotor and current in time.Both in speed and current aspects,it has a good quality of following a given value.The design has been successfully applied to intelligent Electric Actuator,and achieved a good control effect,so it has a certain practical value.

  • Application of frequency conversion velocity modulation technology in the Electric Actuator
    Electronic Instrumentation Customers, 2006
    Co-Authors: Ji Feng
    Abstract:

    Apply the frequency conversion technology to the Electric Actuator, control the turning speed of the motor by the external set signal, modulate the torque output by self-setting multi-stage velocity, and complete the reliable, smooth and automatic controlling function. And apply to various controlling modes to realize reliable on-off control and frequency conversion modulation for the valve and the baffle, and leave out the necessary complex mechanical structure of the Actuator.

Shi Zhang - One of the best experts on this subject based on the ideXlab platform.

  • The design of the intelligent Electric Actuator control system based on variable frequency
    2013 IEEE 8th Conference on Industrial Electronics and Applications (ICIEA), 2013
    Co-Authors: Shi Zhang, Shuang-long Li
    Abstract:

    Electric Actuator is an important device to control valve. This paper analyzes the existing Electric Actuator in details and designs a control system of intelligent Electric Actuator. This system takes microprocessor as a central control component and is integrated with frequency converter, and that makes use of frequency control technology to control the opening and closing speed of the valves. A practical system is designed and tested based on the above scheme.

Zhiyuan Yu - One of the best experts on this subject based on the ideXlab platform.

  • Fuzzy sliding mode controller based on trending law for Electric Actuator
    2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics, 2010
    Co-Authors: Jianwei Cheng, Zhiyuan Yu
    Abstract:

    Fuzzy sliding mode controller based on trending law for Electric Actuator is proposed in this paper. The sliding mode is used to enhance the robustness of the system, the trending law is used to improve the system dynamic characteristics of reaching the sliding surface, and the fuzzy tuning schemes are employed to reduce the chattering problem around the sliding surface. The integral sliding mode controller with exponential reaching law was developed. And the parameters of the exponential trending law were configured by fuzzy control rule. The method is applied to the control of an Electric Actuator. And the results of the simulation verify the validity of the proposed approaches.

  • Slide mode variable structure control for BLDC Electric Actuator
    2008 7th World Congress on Intelligent Control and Automation, 2008
    Co-Authors: Zhiyuan Yu
    Abstract:

    Slide mode variable structure control method is used for designing a digital controller of BLDC Electric Actuator in this paper. Firstly, the mathematic model of Electric Actuator is built according to the selected BLDC motor. Secondly, two slide mode algorithms, proportion switching algorithm and velocity trending law algorithm, are designed for the Electric actuation system. Thirdly, we design a DSP digital controller using the sliding mode variable structure control algorithms. Fourthly, the system simulation and experiment are carried out. Based on results, we get the rule about the influence on the system performance by selecting different parameters. Experiments are made in the sequence and could well validate the results of simulation. Finally, we discuss the characteristics of the two algorithms, and summarize the method to design a slide mode variable structure controller for BLDC Electric Actuator.