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In micromanipulation, lots of methods have been developed to manipulate objects in microscale. However, few of them can be applied in both the transportation and the rotation of the micro objects. In this paper, we present a novel method to realize the non-contact transportation and rotation of the micro objects based on the vibration-induced swirl flow. A piezo actuator is set between the glass needle...
Micromanipulation provides researchers a new way to fabricate complex structures through assembling small components, and it is also a useful tool for single cell manipulation. Many micromanipulation methods have been proposed, but only the few are capable of rotation of the micro targets. In this paper, we present a simple non-contact high-speed rotation method based on the local flow generated by...
Power supply is an important inhibiting factor of autonomous operation of small ocean vehicles, wave energy vibration harvest method is a viable solution. The usual vibration energy harvest device is excited by its housing frame driven by external oscillation, subject to limited vehicle geometry size, and the low frequency of ocean waves, electrical power generated is very limited. A concept vehicle...
This paper investigates the effect of pole and slot combination on the vibration and noise in permanent magnet synchronous motor (PMSM). Two PMSMs that have the same performances but different pole and slot combinations are studied. A numerical analysis process for the vibration is introduced. First, by using the electromagnetic field finite element analysis (FEA) and Maxwell stress tensor method,...
This paper studies the effect of pole and slot combination on the noise and vibration of permanent magnet synchronous motor (PMSM). Two PMSMs which have different pole and slot combinations and same performances are designed. First, using the electromagnetic finite element analysis (FEA) and equivalent magnetizing current method, the local forces of these two motors are calculated. And then, the vibration...
This paper presents evaluation and analysis of acoustic noise and vibration in interior permanent magnet synchronous motor (IPMSM). Acoustic noise and vibration have a close relationship. Acoustic noise is generated by vibration of the motor stator due to the magnetic force. It is called local force that is composed of normal force and tangential force. Harmonics of normal force associated with resonant...
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