电机与控制学报
電機與控製學報
전궤여공제학보
Electric Machines and Control
2015年
9期
16-22
,共7页
电动加载系统%多余力矩%复合闭环控制%模糊自适应PID%力矩伺服
電動加載繫統%多餘力矩%複閤閉環控製%模糊自適應PID%力矩伺服
전동가재계통%다여력구%복합폐배공제%모호자괄응PID%력구사복
electric loading system%surplus torque%complex closed-loop control%fuzzy adaptive PID%torque servo
为了克服电动加载系统中存在直接影响加载精确度和动态性能的多余力矩强扰动以及电机、机构等非线性因素,提出了一种以转速闭环作为内环、力矩闭环作为外环,以及位置闭环作为外环补偿的复合控制策略,它能够对多余力矩和非线性因素进行隔离抑制. 从系统的抗干扰性、鲁棒性等方面与传统单转矩闭环进行了理论分析和比较,转矩闭环采用模糊自适应PID控制算法,以提高加载系统的自适应能力. 实验结果表明,与传统闭环控制效果相比,复合控制能够有效抑制多余力矩干扰,提高了力矩跟踪精确度和系统动态性能.
為瞭剋服電動加載繫統中存在直接影響加載精確度和動態性能的多餘力矩彊擾動以及電機、機構等非線性因素,提齣瞭一種以轉速閉環作為內環、力矩閉環作為外環,以及位置閉環作為外環補償的複閤控製策略,它能夠對多餘力矩和非線性因素進行隔離抑製. 從繫統的抗榦擾性、魯棒性等方麵與傳統單轉矩閉環進行瞭理論分析和比較,轉矩閉環採用模糊自適應PID控製算法,以提高加載繫統的自適應能力. 實驗結果錶明,與傳統閉環控製效果相比,複閤控製能夠有效抑製多餘力矩榦擾,提高瞭力矩跟蹤精確度和繫統動態性能.
위료극복전동가재계통중존재직접영향가재정학도화동태성능적다여력구강우동이급전궤、궤구등비선성인소,제출료일충이전속폐배작위내배、력구폐배작위외배,이급위치폐배작위외배보상적복합공제책략,타능구대다여력구화비선성인소진행격리억제. 종계통적항간우성、로봉성등방면여전통단전구폐배진행료이론분석화비교,전구폐배채용모호자괄응PID공제산법,이제고가재계통적자괄응능력. 실험결과표명,여전통폐배공제효과상비,복합공제능구유효억제다여력구간우,제고료력구근종정학도화계통동태성능.
To overcome the disturbance of surplus torque and the nonlinearity of motor and mechanical mechanism which deteriorate the precision of load tracking and dynamic performance in the electric load-ing system, a multi closed-loop control strategy with closed-loop speed as the inner loop, closed-loop torque as outer loop and closed-loop position as compensation was proposed. The system performances of disturbance rejection, robustness and nonlinear compensation were analyzed and compared with single-loop torque control. The closed-loop torque adopts fuzzy adaptive PID algorithm for increasing adaptive function. Compared with traditional closed loop, the experimental results show that the proposed method effectively suppresses the disturbance of surplus torque and the nonlinearity, improves the control preci-sion and dynamic performance of the electric loading system.