Research for a new actuator with variable step and large displacement

Zhang, Zhijun; Xu, Minglong; Feng, Bo; Zhang, Xinong

doi:10.3233/jae-2010-1163

Cited by 8 publications

(3 citation statements)

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“…When the activation force is always zero, the relationship between elongation and driving voltage is shown as the green solid line. According to the above analysis, the model of activation force in the linear working range is built, which can be described by two parameters [29]:…”

Section: Static Internal Characteristics Of Pztmentioning

confidence: 99%

Characteristic Analysis and Simulated Test of Hybrid Bearing with the Introduction of Piezoelectric Controller

Chen

Ouyang

Shi

et al. 2016

Shock and Vibration

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A novel hybrid bearing with the introduction of piezoelectric controller and tilting pads to control vibration actively is proposed in this paper, and the feasibility of this scheme is verified by theoretical calculation and experimental data. This scheme can control the vibration of bearing actively by using the electromechanical characteristics of piezoelectric ceramic transducer (PZT) components. The static internal character of PZT and static external characteristic of piezoelectric control component are analyzed, and the calculation equations of preload coefficient and driving force of the new bearing are given. The simulation setup of the new bearing is designed and developed. The data representing the relationship of displacement of pad pivot, driving force, voltage, and the simulation stiffness of liquid film are obtained in the test, and the feature parameters of piezoelectric control component are amended to analyze the relationship between preload coefficient of the bearing and driving voltage. The proposed new bearing has the function of controlling preload actively. The theoretical and experimental research results provide essential guidance for the detail design of this new bearing and also provide a new idea for the vibration control of high speed rotor systems.

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Section: Static Internal Characteristics Of Pztmentioning

confidence: 99%

Characteristic Analysis and Simulated Test of Hybrid Bearing with the Introduction of Piezoelectric Controller

Chen

Ouyang

Shi

et al. 2016

Shock and Vibration

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“…Salisbury et al 6 developed a complementary clamp piezoworm stage which can slide without additional coupling. It has a no-load speed of 8.5 mm/s in open loop, and a force capacity of 6 N. Zhang et al 7 developed a walking-type inchworm actuator which has a travel range of 8 mm, and the output force is 4 N at the speed of 0. 8 mm/s.…”

Section: Introductionmentioning

confidence: 99%

A piezoelectric inchworm actuator of linear type using symmetrical lever amplification

Xiao

Zhou

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part N:

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Piezoelectric inchworm actuators have a wide application in the field of nano-positioning and ultra-precision detecting instruments. Ultra-precision positioning equipments are urgently needed in the field of precision optics. A new piezoelectric linear actuator, based on inchworm motion principle, with a symmetry lever displacement amplification mechanism has been designed in this article. The whole structure adopts uniaxial-type double-notch right circular flexible hinge as its main hinges, which offers the driving part a larger displacement and makes clamping part have enough clamping force at the same time. High-precision cross roller guide ways are utilized to improve the positioning accuracy of the actuator. Both theoretical analysis and finite element analysis of clamping mechanism and driving mechanism have been carried out. An experimental test platform has been built, and a controlling program of the actuator is compiled by LabVIEW. The experimental results show that the working stroke of the actuator is 6 25 mm, resolution is 60 nm, the clamping force is 17 N, and the bearing capacity is 11 N; the actuator has a highest speed of 1.259 mm/s at the driving voltage 150 V.

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“…Piezoelectric actuators are widely used in the development of nano/micro positioning and rotational systems used for life science applications, medicine, biology, etc [13]. Piezoelectric actuators are capable of reaching high resolution and possess many attractive features such as a short response time, low power consumption, a compact size, fairly high force, self-braking and good controllability [14][15][16][17][18][19][20]. Meanwhile, the spherical voice coil actuator is able to tilt its shaft on multiple degrees of freedom using the electromagnetic force [21].…”

Section: Introductionmentioning

confidence: 99%

Novel hybrid piezo-electromagnetic actuator for micro-indentation loading

An¹,

Xu²,

Feng³

et al. 2014

Smart Mater. Struct.

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This study proposes a novel hybrid piezo-electromagnetic actuator (HPEA) which can keep output displacement without power supply. The actuator consists of an electromagnetic driving actuator and a piezoelectric clamping actuator. The electromagnetic driving actuator generates displacement and force, which can be hold by the piezoelectric clamping actuator. The theoretical model of HPEA is established, the corresponding governing equation is derived. The static and dynamic output characteristics are simulated. Moreover, a controller is designed and the corresponding experimental system is set up to verify the theoretical analysis and simulation of the HPEA. The experimental results agree well with the simulation. Furthermore, the HPEA is used in indentation experiments of a soft material, polydimethylsiloxane. The results demonstrate that the HPEA has a good performance in soft material indentation test.

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Research for a new actuator with variable step and large displacement

Cited by 8 publications

References 0 publications

Characteristic Analysis and Simulated Test of Hybrid Bearing with the Introduction of Piezoelectric Controller

Characteristic Analysis and Simulated Test of Hybrid Bearing with the Introduction of Piezoelectric Controller

A piezoelectric inchworm actuator of linear type using symmetrical lever amplification

Novel hybrid piezo-electromagnetic actuator for micro-indentation loading

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