Performance evaluation of traveling wave ultrasonic motor based on a model with visco-elastic friction layer on stator

Characteristic Analysis of an Traveling Wave Ultrasonic Motor using a Cylindrical Dynamic Contact Model

“…Hence, many researchers have investigated the contact mechanisms of TWUSMs over the past few decades. Numerous types of characteristic analysis methods using diverse kinds of contact models have been proposed for the TWUSM by many researchers [2,[7][8][9][10][11][12][13]. However, some of the proposed methods have to use the unreasonable values of material coefficients or inconsistent material coefficients to fit the calculated data to the simulated results.…”

Effect of shearing deformation on the transient response of a traveling wave ultrasonic motor

“…For this reason, almost all research carried out is based on a requirement that leads to some errors between the experimental and theoretical results [4]. For example, Kurosawa and Ueha in [5] in 1988 developed a model that consists of a rotor and a stator that are viewed as rigid bodies. They calculated the mechanical characteristics of the motor, but some details are not considered, such as the shearing deformation of the contact layer.…”

“…During the last five years, a series of published papers has considered the shearing deformation [5][6][7]. Different studies have been carried out.…”

“…The motor's mechanical characteristics have been deduced and discussed, but the transient response has not studied. Qu et al [5] analyzed the effects of the friction layer thickness on motor characteristics. In their paper, the starting and stopping component of the motor's motions are not considered.…”

“…The finite element modeling method provides the possibility of a precise study on different mechanical parts of the motor, but the electrical parameters are not considered. The complexity and computational requirements of FEM models as a design tool [7] make them improper for practical integration in the overall motor model [2][3][4][5][6][7]. In these methods, fewer interface parameters are considered, so they are not suitable for analysis of parameters and optimizing the design of a system [5].…”