A NEW TYPE OF MULTI-CHANNEL SERVO CONTROL OF MINIATURE ULTRASONIC MOTOR
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- 英文论文题名：A NEW TYPE OF MULTI-CHANNEL SERVO CONTROL OF MINIATURE ULTRASONIC MOTOR
- 论文作者：Cheng XUE ; Chao CHEN
- 英文论文作者：Cheng XUE ; Chao CHEN ; State Key Lab of Mechanics and Control of Mechanical Structures ; Nanjing University of Aeronautics and Astronautics
- 年：2016
- 作者机构：State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics;
- 英文论文关键词：Ultrasonic motor ; Multi-channel servo ; Drive-foot ; Bending vibration
- 会议召开时间：2016-10-21
- 会议录名称：2016年全国压电和声波理论及器件应用研讨会论文摘要集
- 英文会议录名称：Abstract Book of 2016 Symposium on Piezoelectricity, Acoustic Waves and Device Applications
- 语种：英文
- 分类号：TM359.9
- 学会代码：AGLU
- 会议名称：2016年全国压电和声波理论及器件应用研讨会
- 会议地点：中国陕西西安
- 主办单位：中国力学学会、中国声学学会、IEEE UFFC分会
- 学会名称：中国力学学会
- 页数：2
- 文件大小：116k
- 原文格式：D
- 会议级别：全国
摘要
Background, Motivation and Objective The multi-channel servo control of miniature ultrasonic motor is proposed,which working principle is to use the converse piezoelectric effect of piezoelectric materials. Inspiring stators in the tiny vibration of ultrasonic frequency, and through the friction between the rotor and stator will be converted to the rotation of the rotor or linear motion. Compared with the traditional electromagnetic motor has many unique advantages, such as: compact structure, flexible design, high torque at low speed, inertia small, fast response and Power self-locking. This kind of motor can achieve motor short, small, thin, miniaturization and can be driven directly without retarding gear mechanism. This kind of ultrasonic motor has great prospect in smart bullet and aeronautics and astronautics. Statement of Contribution/Methods A new type of multi-channel servo control of miniature ultrasonic motor's stator consists of an extension ring and four drive-foots. The Shape of stator is like a straw hat. There are four drive-foots under the extension ring as a cross distribution. The round piezoelectric ceramics bonded on disk substrate of stator and four rectangle piezoelectric ceramics bonded on the side of drive foots. The motor based on the bending vibration of disk substrate and drive-foots. The vibration produces displacement of the Z direction due to the extension ring fixed. The motion of Four drive-foots is perpendicular to the Z direction. And two kinds of vibration superposition formed elliptic motion on the face of drive-foot. Using friction force excites the rotation of the two pairs of shafts. Results Through the use of a Laser Doppler Vibrometer PSV-300F-B(Polytec),we can research Two modes of the stator. The modal frequency of longitudinal vibration of the disk is 9.98 KHz. The modal frequency of bending vibration of drive-foot is 10.03 KHz. Two modal frequencies are basically identical, and the analysis results are consistent with the ANSYS. The test platform has built and the related experiments have been carried out in order to obtain the mechanical properties of the prototype. The experimental platform is composed of power amplifier, oscilloscope, signal generator, laser displacement sensor and computer. Experiments indicate that the working frequency range from 10.03 KHz to 10.89 KHz. Under the reasonable pre-pressure, the two pairs of shafts can rotate clockwise and counterclockwise under the opposite signals. The maximum unloaded speed of the motor is 1165r/min and the maximum output torque is 0.005 Nm. However, the reverse rotation speed and torque will be lower than the positive rotation. Discussion and Conclusions The diameter of the motor is 28 mm, and still has a lot of potential on the miniaturization. The reverse rotation speed and torque is different from the positive rotation because processing and manufacturing error exists and assembly does not reach the designated position. Actual working frequency is slightly larger than calculated owing to material parameters and meshing has difference of the actual situation. Under 400 V0-p operating voltage, its stalling torque is 0.005 Nm, no-load speed is 1165r/min. In future work, we will be dedicated to improve aspects of the motor's output performance, such as the torque of the motor.
Background, Motivation and Objective The multi-channel servo control of miniature ultrasonic motor is proposed,which working principle is to use the converse piezoelectric effect of piezoelectric materials. Inspiring stators in the tiny vibration of ultrasonic frequency, and through the friction between the rotor and stator will be converted to the rotation of the rotor or linear motion. Compared with the traditional electromagnetic motor has many unique advantages, such as: compact structure, flexible design, high torque at low speed, inertia small, fast response and Power self-locking. This kind of motor can achieve motor short, small, thin, miniaturization and can be driven directly without retarding gear mechanism. This kind of ultrasonic motor has great prospect in smart bullet and aeronautics and astronautics. Statement of Contribution/Methods A new type of multi-channel servo control of miniature ultrasonic motor's stator consists of an extension ring and four drive-foots. The Shape of stator is like a straw hat. There are four drive-foots under the extension ring as a cross distribution. The round piezoelectric ceramics bonded on disk substrate of stator and four rectangle piezoelectric ceramics bonded on the side of drive foots. The motor based on the bending vibration of disk substrate and drive-foots. The vibration produces displacement of the Z direction due to the extension ring fixed. The motion of Four drive-foots is perpendicular to the Z direction. And two kinds of vibration superposition formed elliptic motion on the face of drive-foot. Using friction force excites the rotation of the two pairs of shafts. Results Through the use of a Laser Doppler Vibrometer PSV-300F-B(Polytec),we can research Two modes of the stator. The modal frequency of longitudinal vibration of the disk is 9.98 KHz. The modal frequency of bending vibration of drive-foot is 10.03 KHz. Two modal frequencies are basically identical, and the analysis results are consistent with the ANSYS. The test platform has built and the related experiments have been carried out in order to obtain the mechanical properties of the prototype. The experimental platform is composed of power amplifier, oscilloscope, signal generator, laser displacement sensor and computer. Experiments indicate that the working frequency range from 10.03 KHz to 10.89 KHz. Under the reasonable pre-pressure, the two pairs of shafts can rotate clockwise and counterclockwise under the opposite signals. The maximum unloaded speed of the motor is 1165r/min and the maximum output torque is 0.005 Nm. However, the reverse rotation speed and torque will be lower than the positive rotation. Discussion and Conclusions The diameter of the motor is 28 mm, and still has a lot of potential on the miniaturization. The reverse rotation speed and torque is different from the positive rotation because processing and manufacturing error exists and assembly does not reach the designated position. Actual working frequency is slightly larger than calculated owing to material parameters and meshing has difference of the actual situation. Under 400 V0-p operating voltage, its stalling torque is 0.005 Nm, no-load speed is 1165r/min. In future work, we will be dedicated to improve aspects of the motor's output performance, such as the torque of the motor.
Background, Motivation and Objective The multi-channel servo control of miniature ultrasonic motor is proposed,which working principle is to use the converse piezoelectric effect of piezoelectric materials. Inspiring stators in the tiny vibration of ultrasonic frequency, and through the friction between the rotor and stator will be converted to the rotation of the rotor or linear motion. Compared with the traditional electromagnetic motor has many unique advantages, such as: compact structure, flexible design, high torque at low speed, inertia small, fast response and Power self-locking. This kind of motor can achieve motor short, small, thin, miniaturization and can be driven directly without retarding gear mechanism. This kind of ultrasonic motor has great prospect in smart bullet and aeronautics and astronautics. Statement of Contribution/Methods A new type of multi-channel servo control of miniature ultrasonic motor's stator consists of an extension ring and four drive-foots. The Shape of stator is like a straw hat. There are four drive-foots under the extension ring as a cross distribution. The round piezoelectric ceramics bonded on disk substrate of stator and four rectangle piezoelectric ceramics bonded on the side of drive foots. The motor based on the bending vibration of disk substrate and drive-foots. The vibration produces displacement of the Z direction due to the extension ring fixed. The motion of Four drive-foots is perpendicular to the Z direction. And two kinds of vibration superposition formed elliptic motion on the face of drive-foot. Using friction force excites the rotation of the two pairs of shafts. Results Through the use of a Laser Doppler Vibrometer PSV-300F-B(Polytec),we can research Two modes of the stator. The modal frequency of longitudinal vibration of the disk is 9.98 KHz. The modal frequency of bending vibration of drive-foot is 10.03 KHz. Two modal frequencies are basically identical, and the analysis results are consistent with the ANSYS. The test platform has built and the related experiments have been carried out in order to obtain the mechanical properties of the prototype. The experimental platform is composed of power amplifier, oscilloscope, signal generator, laser displacement sensor and computer. Experiments indicate that the working frequency range from 10.03 KHz to 10.89 KHz. Under the reasonable pre-pressure, the two pairs of shafts can rotate clockwise and counterclockwise under the opposite signals. The maximum unloaded speed of the motor is 1165r/min and the maximum output torque is 0.005 Nm. However, the reverse rotation speed and torque will be lower than the positive rotation. Discussion and Conclusions The diameter of the motor is 28 mm, and still has a lot of potential on the miniaturization. The reverse rotation speed and torque is different from the positive rotation because processing and manufacturing error exists and assembly does not reach the designated position. Actual working frequency is slightly larger than calculated owing to material parameters and meshing has difference of the actual situation. Under 400 V0-p operating voltage, its stalling torque is 0.005 Nm, no-load speed is 1165r/min. In future work, we will be dedicated to improve aspects of the motor's output performance, such as the torque of the motor.
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