摘要
P re isach算子是一种适用于迟滞特性建模的通用数学工具。利用该算子建立了磁致伸缩作动器的模型,并推导了相应的数值计算公式。对于作动器的轨迹跟踪控制问题,提出了一种基于模型近似线性化的前馈控制方法。实验结果表明该模型可以较好地反映作动器的迟滞特性,利用其数值计算方法求解作动器的输出有较高的精度,满行程位移误差达1.2%;所提出的控制方法有较理想的控制效果,位置控制误差约为3.4%。
Preisach operator is a general mathematical tool for hysteresis modeling. The hysteresis of magnetostrictive actuators is modeled using this operator, and the corresponding numerical formula is presented. For the tracking problem of the actuator, a new control algorithm based on the model linearization is put forward. Simulation and experiment testifies that the model can describe the hysteresis of the actuator, the numerical formula has higher precision, and the control method yields perfect effect. Results show the output error in full range of the model and formula is about 1.2%, and the displacement error of the control method is about 3.4%.
出处
《压电与声光》
CSCD
北大核心
2005年第5期503-506,共4页
Piezoelectrics & Acoustooptics
基金
国防预研基金资助项目(413100501)
