An autonomous impact resonator with metal beam between a pair of parallel-plate electrodes

Yan, Xiaojun; Qi, Mingjing; Liu, Lin

doi:10.1016/j.sna.2013.06.012

Cited by 23 publications

(14 citation statements)

References 23 publications

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“…Our previous works have also shown that the operating DC voltage of the self‐sustained electrostatic actuator could be reduced by miniaturizations. [ 39 ] In contrast, the current consumptions of our flight muscle (using DC voltage) are very low as compared with those of similar‐sized alternatives (using AC voltages and large operating currents). This high‐voltage and small‐current operating conditions are common in the natural world such as sparks created by humans taking off a nylon shirt or discharges generated by electric eels.…”

Section: Discussionmentioning

confidence: 99%

Asynchronous and Self‐Adaptive Flight Assembly via Electrostatic Actuation of Flapping Wings

Kehan

Liu

et al. 2021

Advanced Intelligent Systems

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About three quarters of flying insects on Earth use the asynchronous driving mechanism in muscles to power their flights. Herein, an asynchronous flight assembly via electrostatic actuation of flapping wings in analogy to the asynchronous mechanism in natural flying insects is demonstrated. The wing motions are driven by the self‐sustained oscillation of metal beams in a steady electric field and regulated by the input voltage between two stationary electrodes, whereas the discharging process occurs repetitively as the oscillating beams hit and exchange charges with the electrodes. Several advancements in the oscillation and flight demonstrations have been achieved: 1) self‐sustainable and asynchronous oscillations for biomimetic flapping‐wing motions with high efficiency, 2) the first takeoff of an asynchronous flight assembly along the fixed electrodes, and 3) the first self‐adaptive hovering assembly via the passive modulation of the flapping frequency and amplitude when a disturbance is introduced.

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Section: Discussionmentioning

confidence: 99%

Asynchronous and Self‐Adaptive Flight Assembly via Electrostatic Actuation of Flapping Wings

Kehan

Liu

et al. 2021

Advanced Intelligent Systems

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“…A microbeam is assembled between two constraint bases and two electrodes. The beam will start a self-excited oscillation between the positive and negative electrodes with electric charge transfer between two electrodes [10]. Self-excited means that the beam can start and sustain an oscillation under DC voltage controlled by itself; the oscillating frequency is related to its natural frequency but not the frequency of the driving signal.…”

Section: Structure and Principlementioning

confidence: 99%

“…However, it is difficult for the traditional drive mechanisms (such as magnetic motor [6][7][8], piezoelectric [9], and electrostatic [10][11][12]) to achieve variable velocity-position characteristics of flapping wings like insects [13,14]. These drive devices usually work in simple, harmonic motion with invariable, velocity-position characteristics.…”

Section: Introductionmentioning

confidence: 99%

An Electrostatic Self-Excited Resonator with Pre-Tension/Pre-Compression Constraint for Active Rotation Control

et al. 2021

Self Cite

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We report a novel electrostatic self-excited resonator driven by DC voltage that achieves variable velocity-position characteristics via applying the pre-tension/pre-compression constraint. The resonator consists of a simply supported micro-beam, two plate electrodes, and two adjustable constraint bases, and it can be under pre-compression or pre-tension constraint by adjusting the distance L between two constraint bases (when beam length l > L, the resonator is under pre-compression and when l < L, it is under pre-tension). The oscillating velocity of the beam reaches the maximum value in the position around electrodes under the pre-compression constraint and reaches the maximum value in the middle position between two electrodes under the pre-tension condition. By changing the constraint of the microbeam, the position of the maximum velocity output of the oscillating beam can be controlled. The electrostatic self-excited resonator with a simple constraint structure under DC voltage has great potential in the field of propulsion of micro-robots, such as active rotation control of flapping wings.

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“…During the resonance, the charge and discharge processes generate a series of pulse currents going through the circuit, which can be measured by connecting a resistor together with an oscilloscope in series. The pulse currents also can be used to obtain the resonant frequency and power consumption of the actuator [7,8]. Under current prototype design, the typical resonant frequency is 50-70Hz, and the typical power consumption is 6-10mW.…”

Section: Designmentioning

confidence: 99%

“…Here, we demonstrate the first vertical lift motions of artificial insect wings via electrostatic flapping actuators [7]. The actuator can work at a resonance state under constant DC input without using any complex AC circuits, and directly drive the wings in a biomimetic way with measured lifting force up to more than 3mg.…”

Section: Introductionmentioning

confidence: 99%

Self-lifting artificial insect wings via electrostatic flapping actuators

Yan

Liu

2015

2015 28th IEEE International Conference on Micro Electro Mechanical Systems (MEMS)

Self Cite

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We present self-lifting artificial insect wings by means of electrostatic actuation for the first time. Excited by a DC power source, biomimetic flapping motions have been generated to lift the artificial wings 5cm above ground (limited by the current experimental setup) under an operation frequency of 50-70Hz. Three achievements have been accomplished: (1) first successful demonstration of self-lifting electrostatic flying wings; (2) low power consumption as compared to other actuation schemes; and (3) self-adjustable rotating wing design to provide the lifting force. As such, this work can lead to a new class of electrostatic flapping actuators for artificial flying insects.978-1-4799-7955-4/15/$31.00 ©2015 IEEE

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An autonomous impact resonator with metal beam between a pair of parallel-plate electrodes

Cited by 23 publications

References 23 publications

Asynchronous and Self‐Adaptive Flight Assembly via Electrostatic Actuation of Flapping Wings

Asynchronous and Self‐Adaptive Flight Assembly via Electrostatic Actuation of Flapping Wings

An Electrostatic Self-Excited Resonator with Pre-Tension/Pre-Compression Constraint for Active Rotation Control

Self-lifting artificial insect wings via electrostatic flapping actuators

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