Dissertation
Dissertation > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Special machine tools and processing > Electric machines and their processing

Research and Application of Intelligent Control of Electro-hydraulic Servo System in Electric Discharge Machining (EDM) Process

Author YangChao
Tutor LiuLi
School Shanghai Jiaotong University
Course Mechanical and Electronic Engineering
Keywords EDM Electro-hydraulic servo system Intelligent Control Fuzzy PID SCM
CLC TG661
Type Master's thesis
Year 2007
Downloads 203
Quotes 2
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The papers for the the nuclear reactor heap components - the implementation of the process of demolition and installation of irradiation Regulatory requirements, the the irradiation surveillance pipe EDM cutting electro-hydraulic servo system control method. Due to the thorny issue of the time variability of the parameters of the electro-hydraulic servo system, outside interference and servo valve dead zone nonlinearity, conventional PID control ineffective. As we all know, the fuzzy control does not require a precise mathematical model has strong adaptability and process parameters change. Traditional EDM machining fuzzy control has three control the amount due to the special requirements of the project need to try to simplify the control parameters, this paper, adaptive fuzzy PID control method to control the EDM processing system to achieve a controlled amount of the EDM process effective control, the larger significance of the project and the theoretical value. The first hydraulic servo system, fuzzy control characteristics and applications of the theory, and then combined with a simplified mathematical model of the electro-hydraulic servo system, and application parameters adaptive fuzzy PID control Thought of the EDM process. EDM process adaptive fuzzy control system to control the choice of parameters, the controller linguistic variables selected language value determined membership function of the fuzzy subset, control rules to determine the amount of PID parameter calibration lookup table to establish and control system to quantify the factors and The scale factor is self-adjusting technology, the parameter adaptive fuzzy PID control strategy is applied to the control of the EDM process. Shows that by simulation of the design of the control strategy, the control system has good dynamic and static performance, tracking accuracy and robustness design to prove the feasibility of the control algorithm. The parameters of this article new type of adaptive fuzzy PID controller MCU. Introduced the characteristics and applications of the use of microprocessor, focusing on the use of intelligent control, microprocessor interface, input and output, and storage hardware structure, the software development process. To prove the MCU control algorithm design feasibility and stability of the software, controller online semi-physical simulation. Simulation results show the correctness of the design, and provides a strong reference for subsequent hardware design further.

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