Analysis of the Impedance Characteristics of Traveling Wave Ultrasonic Motors at Operating Voltage

Xu, Bingxin; Jin, Long; Liu, Chenglei; Xu, Zhike; Shen, Zhan; Zhang, Hongbin

doi:10.1007/978-981-99-0451-8_98

Cited by 1 publication

(1 citation statement)

References 8 publications

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“…Equation ( 14) shows that tracking opt f is equivalent to tracking min f , the motor achieves the highest efficiency at the min f point, and the frequency tracking can be adjusted according to the impedance characteristics [8]. Figure 7 shows the impedance test diagram of the ultrasonic motor driven by twophase alternating current.…”

Section: Frequency Tracking Strategies For Optimizationmentioning

confidence: 99%

Optimum frequency tracking of the ultrasonic motor based on a three-level constant voltage drive

Cai,

2024

J. Phys.: Conf. Ser.

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Ultrasonic motors are widely used in aerospace, smart cameras, and other applications. For ultrasonic motors to have the highest operating efficiency, the operating frequency of the motor needs to be adjusted in real time so that the motor’s operating frequency tracks the optimum frequency. Since the current research is limited to the optimum frequency tracking under constant velocity, the three-level drive parameters need to be adjusted to stabilize the velocity, which lacks precision and does not consider the frequency tracking under variable velocity. This paper explores an optimum frequency tracking scheme for ultrasonic motors under the three-level constant voltage input drive and proposes a variable step-size optimum frequency tracking scheme. The experimental results show that the optimum frequency of ultrasonic motors in variable velocity motion exists, and the proposed tracking scheme with three-level drive parameters can effectively improve the efficiency of the motor and significantly broaden the application scenario of the optimum frequency of ultrasonic motors.

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Section: Frequency Tracking Strategies For Optimizationmentioning

confidence: 99%

Optimum frequency tracking of the ultrasonic motor based on a three-level constant voltage drive

Cai,

2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

Analysis of the Impedance Characteristics of Traveling Wave Ultrasonic Motors at Operating Voltage

Cited by 1 publication

References 8 publications

Optimum frequency tracking of the ultrasonic motor based on a three-level constant voltage drive

Optimum frequency tracking of the ultrasonic motor based on a three-level constant voltage drive

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