机床与液压
機床與液壓
궤상여액압
MACHINE TOOL & HYDRAULICS
2012年
6期
118-127
,共10页
液压挖掘机%参数优化%智能控制器%免疫算法
液壓挖掘機%參數優化%智能控製器%免疫算法
액압알굴궤%삼수우화%지능공제기%면역산법
hydraulic excavator%parameter optimization%intelligent controller%immune theory%clone selection%mutation%parameter tuning
液压系统是工程机械的神经系统,变量泵是液压系统的中枢神经,其工作好坏直接影响工程机械的性能和施工效率.针对步进电机控制机械转换机构可满足液压挖掘机控制系统中泵、阀、缸三者的良好匹配以实现无级变速,但是并未解决最佳动力性和最佳燃油经济性控制的问题,提出了一种基于免疫优化控制的参数整定方法.该方法将节能目标函数作为约束条件直接引入控制器参数的寻优过程,借助免疫优化算法整定控制器参数,所整定的参数既可保证控制器良好的动静态控制品质,同时也兼顾了节能的最优性.文中对多种不同算法的整定参数作了仿真对比实验研究,系统响应曲线显示基于免疫优化的整定参数有更好的控制效果.仿真结果表明,所提出的控制器参数免疫优化整定方法用于液压挖掘机控制系统参数整定是合理与可行的.
液壓繫統是工程機械的神經繫統,變量泵是液壓繫統的中樞神經,其工作好壞直接影響工程機械的性能和施工效率.針對步進電機控製機械轉換機構可滿足液壓挖掘機控製繫統中泵、閥、缸三者的良好匹配以實現無級變速,但是併未解決最佳動力性和最佳燃油經濟性控製的問題,提齣瞭一種基于免疫優化控製的參數整定方法.該方法將節能目標函數作為約束條件直接引入控製器參數的尋優過程,藉助免疫優化算法整定控製器參數,所整定的參數既可保證控製器良好的動靜態控製品質,同時也兼顧瞭節能的最優性.文中對多種不同算法的整定參數作瞭倣真對比實驗研究,繫統響應麯線顯示基于免疫優化的整定參數有更好的控製效果.倣真結果錶明,所提齣的控製器參數免疫優化整定方法用于液壓挖掘機控製繫統參數整定是閤理與可行的.
액압계통시공정궤계적신경계통,변량빙시액압계통적중추신경,기공작호배직접영향공정궤계적성능화시공효솔.침대보진전궤공제궤계전환궤구가만족액압알굴궤공제계통중빙、벌、항삼자적량호필배이실현무급변속,단시병미해결최가동력성화최가연유경제성공제적문제,제출료일충기우면역우화공제적삼수정정방법.해방법장절능목표함수작위약속조건직접인입공제기삼수적심우과정,차조면역우화산법정정공제기삼수,소정정적삼수기가보증공제기량호적동정태공제품질,동시야겸고료절능적최우성.문중대다충불동산법적정정삼수작료방진대비실험연구,계통향응곡선현시기우면역우화적정정삼수유경호적공제효과.방진결과표명,소제출적공제기삼수면역우화정정방법용우액압알굴궤공제계통삼수정정시합리여가행적.
Hydraulic pressure transmission is a nervous system of engineering machinery,and a variable pump is the central nervous system of hydraulic pressure system,therefore the performance of the pump will directly determine the performance and efficiency of engineering machinery.Since the switching mechanism of control machinery in stepper motor could better satisfy the match to realize the CVT transmission among the variable flow hydraulic pump,hydraulic valve and hydraulic actuating cylinder,and it could not realize the optimal power performance and the optimal economy control of current fuel,a sort of immune-based optimization tuning method for controller parameter is proposed in this paper.This method took the objective function of energy conservation as the constraints,and the objective constraints will be directly introduced into the optimization process of controller parameter,by means of immune-based optimization algorithm,the selected controller parameter could not only ensure the control quality of the system in dynamical and static performance,but also give attention to two or more things of optimality in energy conservation.In this paper,the comparisons between different control algorithm has been made and the response curves of system show that the proposed method has better control effect for the tuning parameters.Therefore,this method is reasonable and feasible in the control system of hydraulic excavator.
