CAJ | 학술논문

电液比例位置控制系统是非线性、时变性严重的一种系统,且具有变流量死区、变流量增益的特性.单纯采用线性PID控制器难于协调快速性和稳定性之间的矛盾.基于LabVIEW平台,针对电液比例位置系统具有死区非线性的特点,设计模糊控制器,并与PID控制算法进行比较.实验结果表明:模糊控制通过对比例阀死区的补偿,基本消除了液压缸运动的不对称性,并且在快速性、准确性以及稳定性方面优于传统的PID控制,改善了系统的性能.
전액비례위치공제계통시비선성、시변성엄중적일충계통,차구유변류량사구、변류량증익적특성.단순채용선성PID공제기난우협조쾌속성화은정성지간적모순.기우LabVIEW평태,침대전액비례위치계통구유사구비선성적특점,설계모호공제기,병여PID공제산법진행비교.실험결과표명:모호공제통과대비례벌사구적보상,기본소제료액압항운동적불대칭성,병차재쾌속성、준학성이급은정성방면우우전통적PID공제,개선료계통적성능.
Electrohydraulic proportional position servo system is a system with nonlinear and dead zone. Only using PID controller can not solve the contradiction between rapidity and stability. Basing on LabVIEW platform,aiming at the control problem of electrohydraulic proportional position servo system with dead zone,a fuzzy controller was designed and compared with PID control. Experimental result shows that the using fuzzy controller,the asymmetry of the hydraulic cylinder motion is basically eliminated by compensating dead zone. The effect of fuzzy control is better than PID in rapidity,accuracy and stability.