机床与液压
機床與液壓
궤상여액압
MACHINE TOOL & HYDRAULICS
2014年
11期
23-26
,共4页
永磁同步直线电机%xy平台%负载扰动%模糊神经网络滑模控制%交叉耦合控制
永磁同步直線電機%xy平檯%負載擾動%模糊神經網絡滑模控製%交扠耦閤控製
영자동보직선전궤%xy평태%부재우동%모호신경망락활모공제%교차우합공제
PMLSM%xy table%Load disturbance%Fuzzy neural network sliding mode control%Cross couple control
永磁同步直线电机（PMLSM）直接驱动xy平台数控系统曲线轨迹跟踪时，其轮廓精度会受负载扰动以及曲线轨迹轮廓误差模型复杂等问题的影响。针对此问题，采用具有自学习能力的模糊神经网络滑模控制（FNNSMC）进行单轴位置控制器的设计，在不失滑模控制鲁棒性的情况下，有效地削弱该控制所产生的抖振；两轴之间运用实时轮廓误差计算法建立曲线轨迹的轮廓误差模型并采用交叉耦合控制（CCC）进行轮廓控制器的设计，实现跟踪误差与轮廓误差的同时减小。仿真结果表明：该控制方案基本消除了抖振，保证xy平台具有较强的鲁棒性和较高的轮廓精度。
永磁同步直線電機（PMLSM）直接驅動xy平檯數控繫統麯線軌跡跟蹤時，其輪廓精度會受負載擾動以及麯線軌跡輪廓誤差模型複雜等問題的影響。針對此問題，採用具有自學習能力的模糊神經網絡滑模控製（FNNSMC）進行單軸位置控製器的設計，在不失滑模控製魯棒性的情況下，有效地削弱該控製所產生的抖振；兩軸之間運用實時輪廓誤差計算法建立麯線軌跡的輪廓誤差模型併採用交扠耦閤控製（CCC）進行輪廓控製器的設計，實現跟蹤誤差與輪廓誤差的同時減小。倣真結果錶明：該控製方案基本消除瞭抖振，保證xy平檯具有較彊的魯棒性和較高的輪廓精度。
영자동보직선전궤（PMLSM）직접구동xy평태수공계통곡선궤적근종시，기륜곽정도회수부재우동이급곡선궤적륜곽오차모형복잡등문제적영향。침대차문제，채용구유자학습능력적모호신경망락활모공제（FNNSMC）진행단축위치공제기적설계，재불실활모공제로봉성적정황하，유효지삭약해공제소산생적두진；량축지간운용실시륜곽오차계산법건립곡선궤적적륜곽오차모형병채용교차우합공제（CCC）진행륜곽공제기적설계，실현근종오차여륜곽오차적동시감소。방진결과표명：해공제방안기본소제료두진，보증xy평태구유교강적로봉성화교고적륜곽정도。
Complicated contour error model of curve trajectory and load disturbance would influence the contour accuracy of di-rect drive xy table driven by permanent magnet linear synchronous motor.The fuzzy neural network sliding mode control with self-learn-ing ability was adopted for single axis to design position controller.The system not only had strong robustness but also weakened the effects of chattering.Between the two axes,the real time contour error calculation algorithm was adopted to built contour error model of xy table.Then cross-coupled control was adopted to design contour controller.The tracking error and contour error were weakened sim-ultaneously.Simulation results show that the effects of chattering almost do not exist and the control system has strong robustness and high contour precision.
