Precision control system of two-DOF stage with linear ultrasonic motor

Zhang, Hanlei; Shi, Yunlai; Zhao, Chunsheng

doi:10.1007/s11465-008-0063-9

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…The entire rotor's mass and inertia are M r and J r , respectively. f (13) The contact diagram is shown in Fig. 1(c).…”

Section: Free Vibration Of Statormentioning

confidence: 99%

“…These motors transmit power via frictional force at the contact area between the stator and rotor, which originates from the traveling wave generated along the circumferential direction of the stator [8]. Advantageous features such as high stalling torque [9,10], fast response [11], magnetic resonance compatibility [12,13], and high precision motion without magnetization are the motor's strengths because microscopic stepping motion can be achieved by controlling the actuating voltages. Therefore, the ultrasonic motor is widely used in precise manufacturing, robots, and telescope zoom lens [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis and control of micro-stepping characteristics of ultrasonic motor

et al. 2020

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Micro-stepping motion of ultrasonic motors satisfies biomedical applications, such as cell operation and nuclear magnetic resonance, which require a precise compact-structure non-magnetization positioning device. When the pulse number is relatively small, the stopping characteristics have a non-negligible effect on the entire stepwise process. However, few studies have been conducted to show the rule of the open-loop stepwise motion, especially the shutdown stage. In this study, the modal differences of the shutdown stage are found connected with amplitude and velocity at the turn-off instant. Changes of the length in the contact area and driving zone as well as the input currents, vibration states, output torque, and axial pressure are derived by a simulation model to further explore the rules. The speed curves and vibration results in functions of different pulse numbers are compared, and the stepwise motion can be described by a two-stage two-order transfer function. A test workbench based on the Field Programmable Gate Array is built for acquiring the speed, currents, and feedback voltages of the startup-shutdown stage accurately with the help of its excellent synchronization performances. Therefore, stator vibration, rotor velocity, and terminal displacements under different pulse numbers can be compared. Moreover, the two-stage two-order model is identified on the stepwise speed curves, and the fitness over 85% between the simulation and test verifies the model availability. Finally, with the optimization of the pulse number, the motor achieves 3.3 µrad in clockwise and counterclockwise direction.

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“…The entire rotor's mass and inertia are M r and J r , respectively. f (13) The contact diagram is shown in Fig. 1(c).…”

Section: Free Vibration Of Statormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis and control of micro-stepping characteristics of ultrasonic motor

et al. 2020

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show abstract

“…However, MEDM machine tools with good performance are very rare. Although much work has been done on MEDM machine tools, and considerable progress obtained [2][3][4][5]. It is still difficult to machine complicated workpieces with these devices, because some have no NC functions, and other's functions are very limited due to the use of special motion controllers [5] 。As a result, it is necessary to develop a MEDM machine tool with general NC functions and special functions for MEDM machining.…”

Section: Introductionmentioning

confidence: 99%

New Type MEDM Machine Tool and its Control Technology

Zhang

et al. 2010

KEM

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Open architecture NC orienting MEDM application was studied and the “IPC + UMAC motion controller” architecture was presented. And then, the integration method and principle, that the motion system, WEDG (Wire Electrical Discharge Grinding) system, coolant system, visual supervising and measuring system, micro-energy pulse Generator with NC, were investigated. Based on the PComm32, control software with general NC machine tool HMI style, was developed and whole machine tool was integrated successfully. At last, a lot of experiments were carried out, and the results demonstrated that the MEDM machine tool has the capabilities of manufacturing micro- electrode, micro hole, complex 2D micro workpiece and milling 3D model.

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A 3D printed sandwich-type piezoelectric motor with a surface texture

Liu

et al. 2022

Review of Scientific Instruments

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Polymer-based piezoelectric motors have excellent properties, such as lightweight and corrosion resistance. In addition, 3D printing and customized additive manufacturing of polymers provide new opportunities for the development of piezoelectric motors with complex or special structures. In this paper, a 3D printed polymer-based sandwich-type piezoelectric motor operating in a single longitudinal mode is developed. A vibration decomposition model of the motor and an analytical model considering polymer viscoelasticity are established to analyze the dynamic characteristics and to determine the geometric structure of the motor. To increase the coefficient of friction, a polymer surface texture is utilized on the contacts. The experimental results show that the friction coefficient of the contact tip with surface texture is about 0.16, which increased by 45.5% compared to a smooth surface. The resonance frequency is 28.648 kHz, and the maximum no-load speed under 300 Vp-p is 54 r/min. Our study shows the promise of polymer-based materials in the development of the piezoelectric motor.

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Precision control system of two-DOF stage with linear ultrasonic motor

Cited by 3 publications

References 6 publications

Analysis and control of micro-stepping characteristics of ultrasonic motor

Analysis and control of micro-stepping characteristics of ultrasonic motor

New Type MEDM Machine Tool and its Control Technology

A 3D printed sandwich-type piezoelectric motor with a surface texture

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