High performance and high precision ultrasonic motor-actuated positioning servo drive system using improved fuzzy-reasoning controller

Izuno, Y.; Nakaoka, Mutsuo

doi:10.1109/pesc.1994.373845

Cited by 24 publications

(7 citation statements)

References 11 publications

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“…Finally, through proper quantization, the actual control output is generated according to the contents of the decision lookup table. To enhance the error-driven adaptive capability, the output scaling factor is selected to be error dependent as for for (5) where is the position model-following error, is the preset limit of the fuzzy controller ( , the scaling is 1 rad.) and are constant gains.…”

Section: E Construction Of Fuzzy Control Rulesmentioning

confidence: 99%

“…Moreover, the control characteristic of the USM is complicated, highly nonlinear, and the control characteristic and motor parameters are time-varying due to temperature rise and changes in motor drive operating conditions, such as drive frequency, source voltage, and load. Therefore, it is difficult to control the motor USM for high performance applications [2]- [5].…”

mentioning

confidence: 99%

“…The drive system for the USM is introduced first. The drive system is composed of a high-frequency boost dc-dc chopper [12], a two-phase halfbridge series-loaded resonant inverter [2]- [5], and an inner speed loop. The inner speed loop also acts as a mechanical resonant frequency compensator.…”

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confidence: 99%

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Fuzzy adaptive model-following position control for ultrasonic motor

Lin

1997

IEEE Trans. Power Electron.

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A fuzzy adaptive model following mechanism for position control of the traveling-wave-type ultrasonic motor (USM) is described in this study. Since the dynamic characteristics of the USM are difficult to obtain and the motor parameters are time varying, the fuzzy adaptive control is applied to design the position controller of the USM for high performance applications. The driving circuit for the USM, which is composed of a high-frequency boost dc-dc chopper, a two-phase series-loaded resonant inverter, and an inner speed loop, is built first. Next, the control algorithm for fuzzy adaptive control is discussed. Then, a simple linear position control loop is designed and augmented by the model-following error-driven fuzzy adaptive mechanism to reduce the influence of parameter variations. The effectiveness of the proposed controller is demonstrated by some experimental results.

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Section: E Construction Of Fuzzy Control Rulesmentioning

confidence: 99%

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confidence: 99%

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Fuzzy adaptive model-following position control for ultrasonic motor

Lin

1997

IEEE Trans. Power Electron.

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“…however, are too complex to apply for control of the motor. thus the speed or position cont.rollers have been designed using PI (proportional and integral) controller [4][5J or fuzzy controller [6][7J. Since the speed character-…”

Section: Introductionmentioning

confidence: 99%

Quick and Precise Position Control of Ultrasonic Motors With Two Control Inputs

Senjyu

Miyazato

Uezato

1997

Electric Machines & Power Systems

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Ultrasonic motor (USM) has an excellent. performance and many useful features. Since this motor is superior in holding torque and high response characteristic. it has been expected to use as position servomotor for small motors.There have been reported some mathematical models of the ultrasonic motor. however, t.hese models are too complex to apply for control of the motor. Therefore posit.ion controllers based on PI control or fuzzy control haw lx-eu proposed in recent. years. It is difficult to control the ultrasonic motor with high-performanrrusing such controllers, thus simple and convenient mathematicalmodcl is necessary for precise control, This paper presents a new position control scheme of ultrasonic motor. it consists of a PI controller and an adaptive controller which compensates the speed characteristic variations with online parameter identification. Moreover. this svstem controls both driving frequency and phase difference in order to achieve a quick and precise position control. The effectiveness of proposed courrol scheme is demonstrated by experiments.

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“…There have been suggested some control schemes using P I (Proportional and Integral) controller [2] or fuzzy controller [3] for the ultrasonic motor. For controlling the ultrasonic motor, however, it is necessary to consider the speed characteristic variations.…”

Section: Introductionmentioning

confidence: 99%

Quick and precise position control of ultrasonic motors with two control inputs

Senjyu

Miyazato

Uezato

Proceedings of PESC '95 - Power Electronics Specialist Conference

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Ultrasonic motor (USM) has an excellent performance and many useful features. Since this motor is superior in holding torque and high response characteristic, it has been expected to use as position servomotor for small motors.The driving principle of ultrasonic motor is, however, different from those of electromagnetic type motors and its mathematical model has not been developed yet. Moreover, its speed characteristics vary with driving conditions. Therefore, it is difflcult to control ultrasonic motor with high performance. This paper presents a new position control scheme of ultrasonic motor, which controls both driving frequency and phase difference, to achieve a quick and precise position control. This control scheme consists of a PI controller and an adaptive controller, which compensates the speed characteristic variations. The effectiveness of this control scheme is demonstrated by experiments.

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High performance and high precision ultrasonic motor-actuated positioning servo drive system using improved fuzzy-reasoning controller

Cited by 24 publications

References 11 publications

Fuzzy adaptive model-following position control for ultrasonic motor

Fuzzy adaptive model-following position control for ultrasonic motor

Quick and Precise Position Control of Ultrasonic Motors With Two Control Inputs

Quick and precise position control of ultrasonic motors with two control inputs

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