An electrostatic induction motor utilizing electrical resonance for torque enhancement

Hosobata, Takuya; Yamamoto, Akio; Higuchi, Toshiro

doi:10.1016/j.sna.2011.10.014

Cited by 22 publications

(22 citation statements)

References 15 publications

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“…Chip-scale rotary micro-motors are useful in a broad range of applications [4][5][6][7][8]. One emerging opportunity is to integrate rotary motion with a MEMS gyroscope and control electronics to realize on-chip calibration of long-term gyroscope gain and bias drift [9,10].…”

Section: Introductionmentioning

confidence: 99%

Dynamic modeling of a bidirectional magnetoelastic rotary micro-motor

Tang

Gianchandani

et al. 2015

Sensors and Actuators A: Physical

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Section: Introductionmentioning

confidence: 99%

Dynamic modeling of a bidirectional magnetoelastic rotary micro-motor

Tang

Gianchandani

et al. 2015

Sensors and Actuators A: Physical

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“…Our result, however, indicated that FPC design should be carefully considered when designing this type of motors. Although the result is limited for VITEM, similar result is expected for the other high-power induction motor that utilizes LC resonance circuit, (16) which needs to be clarified in the future work.…”

Section: Discussionmentioning

confidence: 78%

“…(15), (16) In these new motors, the slider voltage is indirectly fed as same as the conventional induction motors, but the voltage on the slider is much enhanced with a help of dedicated induction capacitors (15) or embedded LC resonance circuit. (16) These new motors can achieve high output performance thanks to the high electric potential induced on their sliders, without wiring to the sliders. This paper focuses on one of these new motors that utilize dedicated induction capacitors.…”

Section: Introductionmentioning

confidence: 99%

Effects of Electrode Configuration for Performances of Voltage-Induction-Type Electrostatic Motors

Yamashita

Yamamoto

Higuchi

2013

JAMDSM

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This paper describes a general theory for the characteristics of voltage-induction-type electrostatic motors (VITEMs). VITEMs are one of macro-scale electrostatic film motors with multi-phase electrodes on both the sliders and the stators. The motor drives synchronously without voltage feeding wires to its slider due to the indirect power supply using electrostatic induction. Although the numbers of electrode phases can be chosen arbitrary to realize the motor, the characteristics of the motors were analyzed only for two specific cases in the previous studies. This work extends the previously proposed theories so that they can handle a general case, in which the slider and the stator have m-and n-phase electrodes with arbitrary numbers for m and n. The theory can estimate the optimized thrust force performance for any electrode configurations, when given fundamental parameters regarding the capacitance coefficients of the motor, which can be obtained either experimentally or numerically. Using the proposed theory, several different configurations of VITEMs are analyzed and compared, in terms of thrust force performance. The results indicate that electrode thickness considerably affects the thrust force performance of VITEMs, which is not the case for other synchronous electrostatic film motors, and thus suggest that the design of VITEMs should more carefully consider the three-dimensional structure of the electrodes.

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“…Recently, electrostatic motors of an intermediate type, which have energized electrodes in a slider but free from cabling, have been proposed [16,17]. These motors realize high voltages on slider electrodes by electrostatic induction and they differ in their methods for high voltage induction.…”

Section: Introductionmentioning

confidence: 99%

“…A voltageinduction-type electrostatic motor (VITEM) [16,18,19] energizes slider's electrodes by electrostatic induction through dedicated built-in capacitors, and operates as a synchronous motor, whose speed is proportional to the difference of frequencies of applied voltages. A resonance-type induction motor [17] Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Pulse voltage operation of two-to-four-phase voltage-induction-type electrostatic motor

Yamashita

Yamamoto

Higuchi

2013

International Journal of Applied Electromagnetics and Mechanics

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This paper analyzes pulse voltage operations of a two-to-four phase voltage-induction-type electrostatic motor (VITEM) to clarify the appropriate driving sequences. The paper also evaluates transient charge effects that can possibly enhance the thrust force. VITEM has been studied as a novel centimeter-sized electrostatic film motor whose power to the slider is supplied indirectly through its induction electrodes. Since a smooth synchronous driving was aimed in the past studies, high-frequency AC voltages have been used for the driving. This paper demonstrates that straightforward usage of simple pulse sequences cannot realize continuous stepping driving, and proposes several different sets of modified pulse sequences to realize continuous stepping driving using low-switching-rate pulse voltages. In the experiments, the motor showed continuous stepwise driving with a step width of about half of the electrode pitch. In addition, transient characteristics of charges on films were evaluated experimentally under the pulse driving condition, and contribution for thrust force enhancement was clarified.

show abstract

An electrostatic induction motor utilizing electrical resonance for torque enhancement

Cited by 22 publications

References 15 publications

Dynamic modeling of a bidirectional magnetoelastic rotary micro-motor

Dynamic modeling of a bidirectional magnetoelastic rotary micro-motor

Effects of Electrode Configuration for Performances of Voltage-Induction-Type Electrostatic Motors

Pulse voltage operation of two-to-four-phase voltage-induction-type electrostatic motor

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