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Numerical Simulation and Experimental Verification of Temperature Distribution of piezoelectric stack with Heating and Thermal Insulation Device

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Transactions of Nanjing University of Aeronautics and Astronautics 2021年第S1期38卷 17-23页

作者： CHEN Yixiao YANG Xinghua YU Li SHEN Xing State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China China Aerodynamics Research and Development Center Mianyang 621000P.R.China Aircraft Strength Research Institute of China Xi’an 710065P.R.China

This paper discusses the temperature field distribution of piezoelectric stack with heating and thermal insulation device in cryogenic temperature environment. Firstly,the model of the piezoelectric damper is simplified and established by using partial-differential heat conduction equation. Secondly,the two-dimensional Du Fort-Frankel finite difference scheme is used to discretize the thermal conduction equation,and the numerical solution of the transient temperature field of piezoelectric stack driven by heating film at different positions is obtained by programming iteration. Then,the cryogenic temperature cabinet is used to simulate the low temperature environment to verify the numerical analysis results of the temperature field. Finally,the finite difference results are compared with the finite results and the experimental data in steady state and transient state,respectively. Comparison shows that the results of the finite difference method are basically consistent with the finite element and the experimental results,but the calculation time is shorter. The temperature field distribution results obtained by the finite difference method can verify the thermal insulation performance of the heating system and provide data basis for the temperature control of piezoelectric stack.

关键词： thermal differential equation temperature field finite difference piezoelectric stack heating and thermal insulation device

RESEARCHES ON THE VIBRATION CHARACTERISTICS OF A NEW TYPE OF NON-RESONANT piezoelectric stack MOTORS

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RESEARCHES ON THE VIBRATION CHARACTERISTICS OF A NEW TYPE OF...

2013全国压电和声波理论及器件技术研讨会

作者： Xi-fu CHEN Yu LIANG Wei-qing HUANG Key Laboratory of Mechanics and Control of Mechanical Structures.Nanjing University of Aeronautics and Astronautics school of mechanical engineering Yancheng institute of technology

To research on the mechanism of non-resonant linear piezoelectric motors,longitudinal vibration model and pseudo-rigid-body model were established for the stator of motor through the analysis of the construction and operating process of the *** the longitudinal vibration differential equation and transverse vibration differential equation of the drive tip were *** longitudinal displacement function and transverse displacement function can be *** the above researches,formula of average output force in a period was proposed for the ***,the prototype was designed and fabricated,vibration displacement is tested by laser displacement sensor and vibration displacement curves were fitted through origin *** experiments on the longitudinal amplitude of drive tip were carried *** output force of motor under different excitation conditions were measured with force measurement *** proved the vibration characteristic theory of stator that the longitudinal amplitude of drive tip increases with excitation voltage and that the output force of motor increases with the longitudinal amplitude of drive *** output force prototype can be up to 3.5N when the longitude amplitude of the stator is 0.95μ*** above researches can provide theoretical basis for structural optimization for the stator of motor.

关键词： Vibration characteristics Non-resonant piezoelectric stack Linear motor

MODELING AND SIMULATION OF A NEW piezoelectric stack ACTUATOR WITH BI-DIRECTION OUTPUTS

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MODELING AND SIMULATION OF A NEW PIEZOELECTRIC STACK ACTUATO...

2010全国压电和声波理论及器件技术研讨会

作者： Ya-jun LUO,Ming-long XU,Xi-nong ZHANG MOE Key Laboratory for Strength and Vibration/School of Airspace,Xi'an Jiaotong University, 28 West Xianning Road 28,Xi'an,Shaanxi 710049,China

In this paper,a new piezoelectric stack actuator is proposed,and the modeling and simulation are completed. Generally,piezoelectric stack can take significant compressive loads but cannot tolerate tension,so this new actuator is designed that can obtain obvious bilateral actuated *** actuator is made of two piezoelectric stacks and a bilateral output *** controlling the voltage polarity of two piezoelectric stacks,one is always under compressive loads in ***,the actuated principle of the new actuator is analyzed and a simplified drive model is ***,a linear model and a nonlinear model are built up, *** nonlinear model is mainly in order to analyze the hysteresis of piezoelectric material. Moreover,the effect of the preload on the actuator is considered in the two ***,the models are simulated by MATLAB *** corresponding results indicate the actuated characteristics and the effect of some *** simulated results of two models are also compared,and it is shown that the hysteresis is not neglected.

关键词： piezoelectric stack bilateral hysteresis preload

Self-Sensing Test Method for the Temperature of piezoelectric stacks

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Transactions of Nanjing University of Aeronautics and Astronautics 2019年第1期36卷 109-118页

作者： SHEN Xing LI Yang LIANG Lei ZHANG Lei DAI Yuke CHEN Yuchen YANG Jinchuan State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Low Speed Aerodynamics Institute China Aerodynamics Research and Development Center

A self-sensing test method for the temperature of piezoelectric stack,based on the high correlation between the static capacitance and the stack temperature,is proposed in order to construct a self-sufficient methodology of temperature measurement. Firstly,a theoretical model of static capacitance of the piezoelectric stack under preload was set up,and the influence of preload on the static capacitance was analyzed. Secondly,the correctness of the model was verified by static capacitance test experiments under various preloading conditions. Finally, the temperature measurement experiments at low-temperature stage for two kinds of piezoelectric stacks,namely the lowtemperature-resistant piezoelectric stack and conventional piezoelectric stack, were conducted under various preloading conditions using a polynomial fitting method. The results,which validate the accuracy of the test method,show that the maximum temperature deviations of the two kinds of piezoelectric stack are 3.9 ℃ and 2.8 ℃,respectively,when the preload force is close to the specified value. The test method uses the piezoelectric stack itself as a temperature sensor,which does not require additional equipment for temperature sensing,so that the space and equipment cost could be economized. And the test for static capacitance is concise and convenient,which indicates that in the cooling process,a concise and efficient test of the temperature of the piezoelectric stack could be realized so as to grasp the current temperature change in time.

关键词： temperature test piezoelectric stack static capacitance preload curve fitting

Experiment on a Double-Foot Stepping piezoelectric Linear Motor

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第3期35卷 423-431页

作者： Sun Mengxin Huang Weiqing Wang Yin Lu Qian State Key Laboratory of Mechanics and Control of Mechanical Structures College of Aerospace EngineeringNanjing University of Aeronautics and Astronautics School of Mechanical and Electric Engineering Guangzhou University Center for Precision Measurement Technologies and Instruments Huaqiao University

A novel double-foot piezoelectric linear motor is *** kinematic model of the motor under stepping motion is *** motor mainly consists of a stator with four piezoelectric stacks,a mover,a holding mechanism,and a preloading mechanism to achieve large stroke with high *** element simulations are carried out to analyze the motion characteristics of the motor.A prototype is fabricated and a serial experiments are conducted to validate the feasibility of the motor *** results indicate that the motor can move at a speed of 670.22μm/s with a driving frequency of 120 Hz and a voltage of 120 *** resolution of the proposed motor is 3.6μm while the resolution of the single-step motion is 0.1μm.

关键词： piezoelectric linear motor piezoelectric stack performance test

Linear piezoelectric Stepping Motor with Broad Operating Frequency

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Transactions of Nanjing University of Aeronautics and Astronautics 2015年第2期32卷 137-142页

作者：陈西府王寅孙梦馨黄卫清 State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics

The existing resonant linear piezoelectric motors must operate with high working voltage in resonant condition,resulting in their narrow operating frequency range and poor running ***,with the large displacement output characteristics of piezoelectric stacks,the trajectory at the drive foot of stator is firstly produced with two space quadrature piezoelectric actuators excited by sawtooth wave and square ***,the friction drive principle of motor is used to analyze the working mechanisms of the continuous stepping ***,the motor prototype is designed and experiments are carried *** experimental result shows that the motor can stably operate within the scope of 350 Hz to 750 *** the excitation voltage is 30 Vand pre-load is 3Nor10 N,the lateral amplitude of the drive foot is approximately 4μm and the stable average interval ranges from3.1μm to 3.2μm with the error rate of 5%—7.5%.

关键词： linear motor piezoelectric stack stepping motor broad operating frequency

Hybrid FxLMS Algorithm for Vibration Isolation System with Piezo stack Actuator

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Hybrid FxLMS Algorithm for Vibration Isolation System with P...

第36届中国控制会议

作者： Fang Yubin Liu Haotian Wang Tianshan Wu Jian Zhu Xiaojin School of Mechatronic Engineering and Automation Shanghai University

ISBN: (纸本)9781538629185

Facing the background of active vibration control of large flexible space structures,an active vibration controller with hybrid FxLMS algorithm is analyzed and *** hybrid FxLMS algorithm is the combination of FxLMS algorithm and feedback FxLMS *** could solve the problem that the reference signal of FxLMS algorithm cannot be separated from the measurement noises and impulsive *** a piezoelectric-rubber hybrid vibration isolation platform as research object which is built in *** of FxLMS,feedback FxLMS,and hybrid FxLMS algorithm were done with ADAMS and *** the joint-simulation,it is shown that the hybrid FxLMS algorithm based vibration controller has a good control performance.

关键词： Filtered-x Least Mean Square(FxLMS) algorithm Active Vibration Control(AVC) Hybrid FxLMS algorithm piezoelectric stack

Study on design and experimental of multi-foot clamping piezoelectric linear motor

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Study on design and experimental of multi-foot clamping piez...

2011年全国压电和声波理论及器件应用研讨会

作者： Lei PAN~*,Yin WANG,Wei-Qing HUANG,Jing-Jing XU State Key Laboratory of Mechanical Structure Strength and Vibration,Nanjing University of Aeronautics and Astronautics,Nanjing 210016

＜正＞A new multi-foot clamping piezoelectric linear motor was *** is based on the inchworm-type piezoelectric linear *** motor adopts the principle of bionics,it is based on piezoelectric technology and uses mutilpe ... 详细信息

关键词： Inchworm-type piezoelectric stack clamping force Multi-foot clamping

A NOVEL 2-D PIEZO-NANOPOSITIONING STAGE BASED ON TRIANGLE AMPLIFIER MECHANISM

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A NOVEL 2-D PIEZO-NANOPOSITIONING STAGE BASED ON TRIANGLE AM...

2016年全国压电和声波理论及器件应用研讨会

作者： Xue-rui LIU Wei-qing HUANG Yin WANG State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics College of Mechanical Engineering and Automation Huaqiao University

ISBN: (纸本)9781509011902

Background, Motivation and Objective Due to their high resolution and positioning accuracy, piezo-nanoposititioning stages are widely used in precision and ultra-precision fields. A nano-positioning platform with large travel range and bidirectional symmetrical output characteristic is proposed. Statement of Contribution/Methods Theoretical static model develops the relationships among output force, displacement, static stiffness and the structure parameters of the platform. Static analysis of the platform is carried out by the finite element software ANSYS workbench. Finally, the theoretical and the finite element solution are verified by experiments. Results The experimental results of the prototype show that the output performances in X and Y direction are similar and both of them are within an 8% deviation from the theoretical value. The stroke of the stage reaches to 41.6μm and 42.9μm in X and Y directions respectively and is directly proportional to the amplitude of the input sinusoidal voltage of 10 Hz. And the minimum output displacement step is 50 nm. Discussion and Conclusions The nano-positioning stage designed is featured with bidirectional symmetrical output characteristic and millisecond starting characteristic, with high positioning precision.

关键词： Triangle amplifier mechanism Flexure hinge piezoelectric stack Bidirectional driving