计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2014年
7期
2350-2355
,共6页
电液控制%现场可编程门阵列%模糊PID%实时%精度高
電液控製%現場可編程門陣列%模糊PID%實時%精度高
전액공제%현장가편정문진렬%모호PID%실시%정도고
electro-hydraulic control%FPGA%fuzzy PID%real-time%high-precision
为了提高电液伺服控制系统的控制精度和速度，设计了一种基于FPGA和模糊PID的控制系统。以FPGA为核心控制单元，采用模糊PID作为控制算法，能够发挥模糊PID控制鲁棒性强、动态响应好的特点，具有FPGA处理速度快、实时性强的优势。实验仿真和实际测试结果表明，与传统伺服控制器相比，该控制系统运算速度快，伺服周期短，系统方波响应到达稳态时间约为0．5s，稳态偏差约为0．2mm，稳态时控制量输出平滑，具有良好的稳态精度和动态特性，能够满足电液伺服控制系统高速度和高精度的要求；该系统可将复杂的实时控制算法硬件化实现，并根据控制效果的优劣调整控制算法，提高了控制系统的控制效果。
為瞭提高電液伺服控製繫統的控製精度和速度，設計瞭一種基于FPGA和模糊PID的控製繫統。以FPGA為覈心控製單元，採用模糊PID作為控製算法，能夠髮揮模糊PID控製魯棒性彊、動態響應好的特點，具有FPGA處理速度快、實時性彊的優勢。實驗倣真和實際測試結果錶明，與傳統伺服控製器相比，該控製繫統運算速度快，伺服週期短，繫統方波響應到達穩態時間約為0．5s，穩態偏差約為0．2mm，穩態時控製量輸齣平滑，具有良好的穩態精度和動態特性，能夠滿足電液伺服控製繫統高速度和高精度的要求；該繫統可將複雜的實時控製算法硬件化實現，併根據控製效果的優劣調整控製算法，提高瞭控製繫統的控製效果。
위료제고전액사복공제계통적공제정도화속도，설계료일충기우FPGA화모호PID적공제계통。이FPGA위핵심공제단원，채용모호PID작위공제산법，능구발휘모호PID공제로봉성강、동태향응호적특점，구유FPGA처리속도쾌、실시성강적우세。실험방진화실제측시결과표명，여전통사복공제기상비，해공제계통운산속도쾌，사복주기단，계통방파향응도체은태시간약위0．5s，은태편차약위0．2mm，은태시공제량수출평활，구유량호적은태정도화동태특성，능구만족전액사복공제계통고속도화고정도적요구；해계통가장복잡적실시공제산법경건화실현，병근거공제효과적우렬조정공제산법，제고료공제계통적공제효과。
To improve the control precision and speed of electro-hydraulic servo control system,a servo control system based on FPGA and fuzzy PID was designed.The system adopted FPGA as the basic control processer and fuzzy PID as the control algo-rithm.On the one hand,it took the advantages of FPGA high processing speed and strong real-time,on the other hand,it pos-sessed powerful robustness of fuzzy control and good dynamic response.The results of experimental simulation and practical tests indicated that compared with the traditional servo controller,the control system had high operation speed and short servo cycle, the response time was about 0. 5s,steady-state error was almost zero,the steady-state error was about 0. 2mm,and the con-trolled variable output on steady state was smooth.The system with good steady-state accuracy and dynamic performances cha-racteristics could meet the requirements of high-speed and high-precision.Moreover,it was able to make many complex control algorithms realize in hardware and optimize them according to the result timely.
