Integration simulation method concerning speed control of ultrasonic motor

[摘要] In this paper, the configuration of control system of the ultrasonic motor (USM) from finite element method (FEM) model by applying the nonlinear model order reduction (MOR) is proposed. First, the USM and the FEM model is introduced. Second, FEM model order reduction method is described. Third, the result of comparing the computing time and accuracy of the FEM model and reduced order model is shown. Finaly, nominal model for control is derived by system identification from reduced order model. Nonlinear model predictive control (NMPC) is applied to the nominal model, and speed is controlled. The controller effect is comfirmed by applying the proposed reduced order model.

[发布机构] Cybernet Systems Co., Ltd., 3 Kanda-neribeicho, Tokyo, Chiyoda-ku; 101-0022, Japan^1;Maplesoft, 615 Kumpf Drive, Waterloo; ON; N2V 1K8, Canada^2

[关键词] Computing time;Finite element method model (FEM);Integration simulation;Nominal models;Non-linear model;Nonlinear model predictive control;Reduced order models;Ultrasonic motors