Novel adjustable micropermanent-magnet synchronous-motor control system without using a rotor-position∕speed sensor

Chang, Yung-Hsin; Liu, Tian‐Hua; Wu, C.-C.

doi:10.1049/ip-epa:20050549

Cited by 12 publications

(2 citation statements)

References 6 publications

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“…The spherical rotor of a multi-DOF spherical motor is the main output component of this type of motor, which is capable of producing uniform rotation in multiple degrees of freedom. The experiment uses a piezoelectric driven multi-DOF spherical motor with a rated voltage of 12 V. The motor speed can be controlled by changing its voltage frequency to a maximum speed of 30 r/min, and its rotor outer diameter is measured to be 10 cm [ 24 , 25 , 26 ]. The experimental setup is shown in Figure 5 in the experiment, referring to Table 1 , the theoretical maximum linear velocity around the Z -axis be achieved as follows:

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Section: Experiments and Error Analysismentioning

confidence: 99%

Position Detection Method of Piezoelectric Driven Spherical Motor Based on Laser Detection

Zhu

Xie

et al. 2022

Micromachines

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Laser detection technology has manypromising applications in the field of motor speed and position measurement. Accurate and fast measurement of position information of spherical rotor is very important for motor control. In this paper, we propose a method for non-contact measurement of the angular velocity of a multi-DOF spherical motor using the Doppler effect of the laser, and further obtain the position information of the motor rotor. The horizontal laser beam from the laser generator is divided into a reference beam I and a measurement beam II through a beam splitter, and the measurement beam II reflects and undergoes Doppler effect after irradiating the rotating motor. The two beams pass through the photoelectric conversion module to obtain the corresponding frequency difference signals to derive the angular velocity and position information of the motor rotor. The correctness of the method is verified experimentally. The results show that the coordinate error of Z and Y axes is less than 2 mm, thatthe error of Z-axes is less than 0.2 mm, and that the method can better measure the spherical rotor position information of the motor.

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Section: Experiments and Error Analysismentioning

confidence: 99%

Position Detection Method of Piezoelectric Driven Spherical Motor Based on Laser Detection

Zhu

Xie

et al. 2022

Micromachines

View full text Add to dashboard Cite

show abstract

“…For example, they are smaller in size, have low power dissipation and are lightweight. As a result, micro motors are well suited to some specific applications [3]. For example, biomedical applications, such as drug delivery systems [4], surgical tools [5] and probes [6].…”

Section: Introductionmentioning

confidence: 99%