武汉理工大学学报(信息与管理工程版)
武漢理工大學學報(信息與管理工程版)
무한리공대학학보(신식여관리공정판)
JOURNAL OF WUHAN AUTOMOTIVE POLYTECHNIC UNIVERSITY
2014年
6期
735-738,742
,共5页
杨理华%朱石坚%楼京俊%李超博%曹海龙
楊理華%硃石堅%樓京俊%李超博%曹海龍
양리화%주석견%루경준%리초박%조해룡
磁致伸缩作动器%PID控制%前馈控制%改进粒子群算法
磁緻伸縮作動器%PID控製%前饋控製%改進粒子群算法
자치신축작동기%PID공제%전궤공제%개진입자군산법
magnetostrictive actuator%PID control%feedforward control%improved particle swarm optimization
在低频条件下,以磁致伸缩作动器线性模型为基础,设计了PID及前馈PID控制器。针对固定参数控制器自适应能力较弱的现状,提出用粒子群( PSO)算法对固定参数控制器进行优化。针对标准PSO算法存在早熟收敛、后期迭代易陷入局部最优的不足,进一步提出了一种可动态调整惯性权重及遗传变异的改进型粒子群( IPSO)优化算法,并将该算法与前馈PID相结合应用于磁致伸缩作动器的位置跟踪控制。仿真结果表明:针对指令阶跃信号,相对传统PID及前馈PID控制,改进型PSO前馈PID控制具有控制精度高,位置跟踪效果好及抗干扰能力强的特点。
在低頻條件下,以磁緻伸縮作動器線性模型為基礎,設計瞭PID及前饋PID控製器。針對固定參數控製器自適應能力較弱的現狀,提齣用粒子群( PSO)算法對固定參數控製器進行優化。針對標準PSO算法存在早熟收斂、後期迭代易陷入跼部最優的不足,進一步提齣瞭一種可動態調整慣性權重及遺傳變異的改進型粒子群( IPSO)優化算法,併將該算法與前饋PID相結閤應用于磁緻伸縮作動器的位置跟蹤控製。倣真結果錶明:針對指令階躍信號,相對傳統PID及前饋PID控製,改進型PSO前饋PID控製具有控製精度高,位置跟蹤效果好及抗榦擾能力彊的特點。
재저빈조건하,이자치신축작동기선성모형위기출,설계료PID급전궤PID공제기。침대고정삼수공제기자괄응능력교약적현상,제출용입자군( PSO)산법대고정삼수공제기진행우화。침대표준PSO산법존재조숙수렴、후기질대역함입국부최우적불족,진일보제출료일충가동태조정관성권중급유전변이적개진형입자군( IPSO)우화산법,병장해산법여전궤PID상결합응용우자치신축작동기적위치근종공제。방진결과표명:침대지령계약신호,상대전통PID급전궤PID공제,개진형PSO전궤PID공제구유공제정도고,위치근종효과호급항간우능력강적특점。
Based on the linear model of magnetostrictive actuator, the PID and feedforward PID controllers were designed in low frequencies.For the situation that the adaptive capacity of fixed parameter controller is weak, then the particle swarm optimi-zation ( PSO) algorithm was proposed to optimize the fixed controller parameter.The standard PSO algorithm is insufficient with premature convergence and easily falling into local optimum in later iteration.An improved particle swarm optimization ( IPSO) was further proposed with a dynamic change of inertia weights and genetic variation.Then it was applied to the position tracking control of magnetostrictive actuator with the combination of feedforward PID.And then simulation results show that:for the step signal instruction, compared with traditional PID and feedforward PID control, the improved PSO feedforward PID control has the characteristics of higher control accuracy, better location tracking performance and stronger anti-interference ability.