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

Senjyu, Tomonobu; Miyazato, Hiroshi; Uezato, K.

doi:10.1109/pesc.1995.474844

Cited by 12 publications

(3 citation statements)

References 3 publications

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“…Take the University of Ryukyus as an example, [1] applied the conventional PID control method on the USM system to obtain the desirable speed and/or position by controlling three features of the driving signal, namely, the voltage, phase, and frequency. As comparison showed the advantages of adaptive controller over PID in [2], they began combining PI/PID controller with other state-of-art theories at that time, such as the repetitive compensator for the speed ripple caused by temperature rising [3] and the adaptive controller for online parameter identification [4].…”

Section: Introductionmentioning

confidence: 99%

Model-free adaptive speed control on travelling wave ultrasonic motor

2018

Journal of Electrical Engineering

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This paper introduced a new data-driven control (DDC) method for the speed control of ultrasonic motor (USM). The model-free adaptive control (MFAC) strategy was presented in terms of its principles, algorithms, and parameter selection. To verify the efficiency of the proposed method, a speed-frequency-time model, which contained all the measurable nonlinearity and uncertainties based on experimental data was established for simulation to mimic the USM operation system. Furthermore, the model was identified using particle swarm optimization (PSO) method. Then, the control of the simulated system using MFAC was evaluated under different expectations in terms of overshoot, rise time and steady-state error. Finally, the MFAC results were compared with that of proportion iteration differentiation (PID) to demonstrate its advantages in controlling general random system.

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Section: Introductionmentioning

confidence: 99%

Model-free adaptive speed control on travelling wave ultrasonic motor

2018

Journal of Electrical Engineering

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“…The motivation of this study is to design a novel driving scheme that simultaneously employs both the driving frequency and phase difference as dual-mode control variables to handle system nonlinearities and parameter variations [8]. In order to reduce the system hardware size and cost, the proposed phase shifter circuit is implemented by using a voltage-controlled resistance (VCR) and all-pass filter circuit that can provide piecewise-linear phase control over the entire speed range.…”

Section: Introductionmentioning

confidence: 99%

Neuro-fuzzy speed control of traveling-wave type ultrasonic motor drive using frequency and phase modulation

Chen

et al. 2008

ISA Transactions

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“…So far, there have been several attempts as reported to control speed/position of ring-type USM in the literature Izumi [2], Senjyu [3][4], Lin [5]. Also, Wang [6] presents the work on speed controller of CUSM, but the scope is limited to single mode control with amplitude as the control variable only.…”

Section: Introductionmentioning

confidence: 99%

Servo control of micro-cylindrical ultrasonic motor using single/dual mode control

Panda

Leong³

2005

31st Annual Conference of IEEE Industrial Electronics Society, 2005. IECON 2005.

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Cylindrical Ultrasonic Motor (CUSM), is a relatively new kind of piezoelectric actuator, having different type of characteristics from that of conventional electromagnetic motors. In order to choose the most suitable control variable for speed/position control applications, this paper evaluates the dynamic and steady state performance of the CUSM drive system by using three different control variables, namely, the amplitude, the frequency and the phase difference of the excitation signals. In the single mode control, only one control variable is used while the other two are maintained constant. Among the three variables, amplitude control is found to be superior as compared to other control variables. Furthermore, to achieve quick and precise position control, the dual mode control method is proposed in which two control variables are used simultaneously while maintaining the third variable constant. Experimental test results obtained by using a 10mm diameter and 30mm long CUSM verify that the dual mode control is superior to the single mode control. In dual mode control, the combination of Amplitude and Frequency control is the best choice for position control application. I. IntroductionAs USM has many special features such as high holding torque at low speeds and no EMI problems [1], it has drawn particular attention from the mechatronics field. Moreover, for CUSM, because of its cylindrical construction, it can be made with diameter less than 1 mm and still obtain larger torque than ring-type motors. However, since the motor's driving mechanism is by friction between the stator and the rotor, which is nonlinear, it is difficult to come up with an accurate mathematical model of the motor. Therefore, high performance speed/position control of the motor is not trivial.So far, there have been several attempts as reported to control speed/position of ring-type USM in the literature Lin[5]. Also, Wang[6] presents the work on speed controller of CUSM, but the scope is limited to single mode control with amplitude as the control variable only. In this paper, single and dual mode of control are evaluated in order to find a suitable control variable to get the best performance for positioning application. First, because of CUSM's unique structure, its operating characteristics and driving circuit are discussed in Section II. Next, the single mode control with amplitude, frequency and phase difference as control variable is described in Section III. In this part, by changing one control variable at a time while keeping the other two variables fixed, the dynamic and steady state performances of CUSM are com-

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

Cited by 12 publications

References 3 publications

Model-free adaptive speed control on travelling wave ultrasonic motor

Model-free adaptive speed control on travelling wave ultrasonic motor

Neuro-fuzzy speed control of traveling-wave type ultrasonic motor drive using frequency and phase modulation

Servo control of micro-cylindrical ultrasonic motor using single/dual mode control

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