System Configuration and Evaluation for Optical Sled Drive Using Constraint-Tuning Ultrasonic Actuator

Abstract:

Through the estimated method for constraint-tuning modified-mode (CTMM), an innovative thin-disc piezoelectric ultrasonic actuator is used to drive an optical sled in this study. With four screws positioned on the thin-disc actuator at the angle distribution of 0⁰, 90⁰, 180⁰, and 320⁰, both modified modes of ((1, 2))_C and ((1, 1))_S in vibration provide an approximate equilibrium force to push an optical sled in bilateral movement. The innovative ultrasonic actuator has the vibrator’s compact and thinner structure, a thickness of 3 millimeters, without a gearbox rather than a conventional DC sled motor. Using contact friction to drive an optical sled with quick tracking in bilateral motion, experimental results demonstrate obtaining the desired function by a proposed single-phase, bi-frequency LC resonant driving circuit as well as remaining the original sled controller. The general specification of linear speed achieves 200－300 mm/s at less power dissipation for pushing the CD652A BenQ sled drive with 1.0 N output force and 20%－33% efficiency.

• Periodical: Applied Mechanics and Materials (Volume 87)
• Pages: 1-13
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.87.1
• Online since: August 2011
• Authors: Ming Hung Lai, Fuh Liang Wen, Yu Lin Shen, Min Sun Ouyang
• Keywords: Constraint Tuning, Driving Circuit, Modified Modes, Optical Sled, Ultrasonic Actuator

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DOI: 10.1177/058310248201401107

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