On the sensing and tuning of progressive structural vibration waves

Minikes, A.; Gabay, Ran; Bucher, Izhak; Feldman, Mark A.

doi:10.1109/tuffc.2005.1516029

Cited by 38 publications

(36 citation statements)

References 10 publications

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“…In this work the frequency does not have to be chosen right in the middle. The dimensions of the • compared to W B with a same amplitude accordingly to [6], the vibration amplitude on the beam W (x i ), depends on both of the deformation mode shapes, and their modal amplitude. If we consider two given points of the beam x 1 and x 2 (position of the actuators), the harmonic vibration at these positions is given by:…”

Section: B Two Modes Excitationmentioning

confidence: 99%

Modelling and control of a travelling wave in a finite beam, using multi-modal approach and vector control method

Ghenna

Giraud

Giraud-Audine

et al. 2015

2015 Joint Conference of the IEEE International Frequency Control Symposium &Amp; The European Frequency and Time Forum

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Abstract-This paper presents a new method to produce and control the vibration amplitude and direction of a travelling wave in a finite beam, using multi-modal approach. A closed loop control of the transducer vibration is applied using vector control method. the modelling in rotating frame and the decoupling according to two-axis allows to obtain a double independent closed loop control. This allows to regulate the vibration amplitude of the travelling wave directly. An analytical modelling is presented, with experimental validation, showing good performances even in the presence of perturbations.

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Section: B Two Modes Excitationmentioning

confidence: 99%

Modelling and control of a travelling wave in a finite beam, using multi-modal approach and vector control method

Ghenna

Giraud

Giraud-Audine

et al. 2015

2015 Joint Conference of the IEEE International Frequency Control Symposium &Amp; The European Frequency and Time Forum

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“…All these examples have in common the necessity to control the phase and amplitude of the two modes which, in practice, do not have the same resonance frequency. For the best performance, precise adjustment of the amplitude, phase and frequency of the supply voltages is required [25]. In this paper, we apply the Vector Control Method on a 2-fingers tactile stimulator.…”

Section: Application To the Synchronization Of Two Piezoelectric Tmentioning

confidence: 99%

“…In practice however, this condition is difficult to attain, because the resonance frequencies shift due to temperature rise and/or the environment. Therefore in openloop, synchronizing the two modes needs a fine tuning of the voltages, in amplitude and phase [25]. In the rotating reference frame, synchronizing the two modes is achieved by setting U dXref = U dY ref , and U qXref = U qY ref .…”

Section: Application To the Synchronization Of Two Piezoelectric Tmentioning

confidence: 99%

Vector Control of Piezoelectric Transducers and Ultrasonic Actuators

Ghenna

Giraud

Giraud-Audine

et al. 2018

IEEE Trans. Ind. Electron.

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Abstract-This paper presents the implementation of a novel vibration amplitude control and resonant frequency tracking for piezoelectric transducers (PTs) and ultrasonic motors (USMs). It is based on a generalization of the vector control method to the PT and the USM, which is explained in the first part. We show that two independent controllers with a similar structure are required: one tracks the resonant frequency and the second controls the amplitude. We then present the implementation into a low-cost digital signal processing controller with a sampling period of 200 µs. Experimental results on a Langevin transducer achieved a time response of 20 ms approximately, and the generality of the method is further demonstrated on a 2-D tactile stimulator at the end of this paper.

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“…It is sometimes more convenient to use the inverse of this ratio since it is bounded between 1 11 SWR     with 1 0 SWR   corresponding to a pure standing wave. A different approach, quantifying the quality of the wave is the Traveling Wave Ratio (TWR), which can be calculated from the ellipse principle axes by [25]:…”

Section: Waves Identificationmentioning

confidence: 99%

“…A special configuration is required in order to effectively excite progressing waves efficiently, as discussed, for example, in [4,12]. The device proposed here is based on a vibrating annulus creating the levitation and transportation forces efficiently.…”

Section: Introductionmentioning

confidence: 99%