A Novel Method on Real-Time Measurement of 2-DOF Motions of Spherical Ultrasonic Motor

Abstract:

Spherical ultrasonic motor (SUSM) is utilized primarily in the assembly sectors, precision machining and active tracking devices. The controllability and accuracy of the SUSM are much concerned in those practical uses. So the sensors which measure the motion of the stator are usually used to build up a closed loop control system. These sensors can detect the position and speed of the ball stator. However, the traditional contact positional detection device which contains photoelectric encoders has the disadvantages of low measuring precision. A novel contactless method which based on an optical sensor, is introduced in the paper. A further illustration including principles of the method, the model of 2-DOF motion of the spherical ultrasonic motor rotor, a set of experiment test-bed to verify the feasibility of the method are presented in the article. The experiment turns out an expectant result and shows the method feasible and significant for application.

• Periodical: Applied Mechanics and Materials (Volumes 416-417)
• Pages: 1080-1085
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.416-417.1080
• Online since: September 2013
• Authors: Zhe Guo, Yang Bai, Lin Yi, Ji Feng Guo, Jian Wang
• Keywords: Contactless Sensing, Displacement, Loop Control, Spherical Ultrasonic Motor

References

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