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THE STICK-SLIP MOTION OF THE SMOOTH IMPACT DRIVE MECHANISM BASED ON TRAPEZOID DRIVE SIGNAL

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THE STICK-SLIP MOTION OF THE SMOOTH IMPACT DRIVE MECHANISM B...

2016年全国压电和声波理论及器件应用研讨会

作者： Dong CHEN Xiao-hui LU ting-hai cheng Heng-yu LI School of Mechatronic Engineering Chang Chun University of Technology

ISBN: (纸本)9781509011902

Background, Motivation and Objective Smooth impact drive mechanism(SIDM) is a kind of piezoelectric inertial mechanism. The key part of the SIDM is piezoelectric stack. The SIDM is excited by the asymmetry drive signal, such as ramp drive signal. The SIDM has a character of nano-positioning accuracy and can be used in the fields such as micro-assemble and nanometer technology. The SIDM is driven by the asymmetry drive signal and the motion of "stick" and "slip" are produced at the driving part of friction rod. Germany researcher Matthias hunstig drives a SIDM utilizing a triangle signal. The SIDM motion process is analyzed utilizing friction force and get a conclusion that the stick–slip operation can get the maximum output velocity principally. The Korea researcher Jonghyun Lee drives a SIDM utilizing a trapezoid drive signal, which has a dual-slider and successfully is used for a compact zoom lens system. The stick-slip motion is introduced. But the stick-slip motion should be analyzed utilizing a kinematics more explicitly. Statement of Contribution/Methods In order to research the stick–slip motion utilizing kinematics in the drive process, the trapezoid signal is used for driving the SIDM. The motion of "stick" and "slip" are produced at the driving part of friction rod. The two motions can influent the slider displacement. The two motions are helpful to analysis qualitatively and quantitatively the slider displacement including forward, backward and valid step. The smooth impact diving mechanism motion process which utilizes the friction and impact force is analyzed and the motion function is obtained. The stick-slip critical time is got. The stick-slip critical time is used for judging the slider motion station. Results For test the theoretical stick-slip critical time, the experiment system is built, which is composed of personal computer, signal generator, power amplifier and laser displacement sensor. A series trapezoid drive signal which has different ris

关键词： Smooth impact drive mechanism Stick-slip motion Trapezoid drive signal Stick-slip critical time

A TRAVELLING WAVE ULTRASONIC CLUTCH BY THE COUPLING OF LONGITUDINAL AND BENDING VIBRATION MODES

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A TRAVELLING WAVE ULTRASONIC CLUTCH BY THE COUPLING OF LONGI...

2015全国压电和声波理论及器件技术研讨会

作者： ting-hai cheng Liang WANG Pu HE Xiao-yong LIU Dong ZHU School of Mechatronic Engineering Changchun University of Technology School of Mechanical Science and Engineering Jilin University School of Mechatronics Engineering Harbin Institute of Technology

A travelling wave ultrasonic by the clutch coupling longitudinal and bending vibration modes is proposed to improve the output performance of the current ultrasonic *** proposed ultrasonic clutch mechanism is a crucial component and it mainly includes a driving friction plate,a slave friction plate,driving and slave Langevin transducers,driving and driven *** proposed ultrasonic clutch has the connection and disconnection *** addition,a driving travelling wave is generated by compositing the longitudinal and bending vibration modes of transducer and friction plate for realizing the regulation of output *** matching frequencies of two vibration modes are obtained by modal simulation analysis using finite element method.A prototype of ultrasonic clutch is manufactured and the vibration characteristics are *** results indicate that the travelling wave ultrasonic clutch coupling by longitudinal and bending vibration modes is feasible.

关键词： Ultrasonic clutch Longitudinal vibration mode Bending vibration mode Travelling wave

DESIGN AND ANALYSIS OF A CYLINDRICAL SCREW-TYPE ULTRASONIC MOTOR DRIVEN BY SIX TRANSDUCERS

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DESIGN AND ANALYSIS OF A CYLINDRICAL SCREW-TYPE ULTRASONIC M...

2015全国压电和声波理论及器件技术研讨会

作者： ting-hai cheng Liang WANG Meng-fei YIN Zhao-yang SONG Dong ZHU School of Mechatronic Engineering Changchun University of Technology School of Mechanical Science and Engineering Jilin University School of Mechatronics Engineering Harbin Institute of Technology

The screw-type ultrasonic motor was successfully used in fields of optical focusing system,medical instruments,and so *** this paper,a cylindrical screw-type ultrasonic motor driven by six transducers is *** motor mainly contains six fixed parts,twelve piezoelectric plates,six transducers,an elastomer and a screw *** piezoelectric plates are bonded to the opposite outside surfaces of transducers and the dworking mode is adopted.A traveling wave processing along circumferential direction of the elastomer is composited to drive screw shaft and the rotary-linear output motion is achieved without additional conversion *** motor is designed and its exciting mode is clarified in *** vibration performance of the motor is analyzed using Finite Element Method(FEM).The prototype is fabricated and *** testing results indicate that the vibration performance of the motor is in good agreement with the simulation results.

关键词： Ultrasonic motor Screw-type Finite Element Method(FEM)

Research on the excitation modes of PZT element in bending cylindrical transducers

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Research on the excitation modes of PZT element in bending c...

2011年全国压电和声波理论及器件应用研讨会

作者： ting-hai cheng~* Xiang-Dong GUO Gang BAO School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150080

＜正＞The PZT element acts as the core component which transforms the input electric energy to output mechanical energy in ultrasonic transducer,so the excitation modes of PZT element have an important influence on th... 详细信息

关键词： Cylindrical transducer Bending vibration PZT element Excitation mode Force factor

Forecasting model for the ideal prr-force of cylindrical bending rotation ultrasonic motor

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Forecasting model for the ideal prr-force of cylindrical ben...

2011年全国压电和声波理论及器件应用研讨会

作者： ting-hai cheng~* Xiang-Dong GUO Gang BAO School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150080

＜正＞The force factor formula of stator based on bending vibration and piezoelectric plate sandwich is *** is indicated that,to the ultrasonic motor whose stator uses the bending vibration mode of free beam,disposing... 详细信息

关键词： Ultrasonic motor Bending rotation Ideal pre-force Forecasting model

Influence of Ultrasonic Vibrations on the Static Friction Characteristics of a Rubber/Aluminum Couple

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Chinese Physics Letters 2011年第12期28卷 157-159页

作者： cheng ting-hai GAO Han BAO Gang School of Mechatronics Engineering Harbin Institute of TechnologyHarbin 150080

A novel ultrasonic vibration approach is introduced into a chloroprene rubber/aluminum friction couple for improving the static friction properties between rubber and *** to the test results without vibrations,the static friction force of a chloroprene rubber/aluminum couple decreases observably,leading to the ultimate displacement of *** values of the static friction force and ultimate displacement can be ultimately reduced to 23.1%and 50%of those without ultrasonic vibrations,respectively.

关键词： friction rubber couple

Debiased conversion measurements based target tracking with direction cosine measurements

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Journal of Systems Engineering and Electronics 2022年第6期33卷 1140-1150页

作者： LI Lifu cheng ting School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Phased array radar’s measurements include two direction cosine and range measurements,which can be obtained in the direction cosine *** equation of the target is nonlinear with the measurements and in order to solve the nonlinear problem,debiased conversion measurements based target tracking with direction cosine and range measurements in direction cosine coordinates named DCMKFPreDcos is proposed first in this paper,where the predicted information is introduced to calculate the converted measurement errors’statistical characteristics to eliminate the correlation between measurement noise and the converted measurement errors *** range rate information can be obtained further,based on the above DCMKF-PreDcos’filtering result,the sequential filtering is adopted to process the additional range rate measurement and the DCMKF-PreDcos algorithm with extra range rate information is *** predicted information is also introduced to calculate the involved statistical characteristics of converted *** effectiveness of the proposed algorithms is shown in simulation results.

关键词： nonlinear filtering range rate information target tracking direction cosine coordinates predicted information

Dwell scheduling algorithm for multifunction phased array radars based on the scheduling gain

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Journal of Systems Engineering and Electronics 2008年第3期19卷 479-485页

作者： cheng ting He Zishu Tang ting School of Electronic Engineering Univ. of Electronic Science and Technology Chengdu 610054 P. R. China

A real-time dwell scheduling model, which takes the time and energy constraints into account is founded from the viewpoint of scheduling gain. Scheduling design is turned into a nonlinear programming procedure. The real-time dwell scheduling algorithm based on the scheduling gain is presented with the help of two heuristic rules. The simulation results demonstrate that compared with the conventional adaptive scheduling method, the algorithm proposed not only increases the scheduling gain and the time utility but also decreases the task drop rate.

关键词： multifunction phased array radar dwell scheduling pulse interleaving time and energy constraint.

Novel radar dwell scheduling algorithm based on pulse interleaving

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Journal of Systems Engineering and Electronics 2009年第2期20卷 247-253页

作者： cheng ting He Zishu Tang ting School of Electronic Engineering Univ. of Electronic Science and Technology Chengdu 610054 P. R. China

The problem of scheduling radar dwells in multifunction phased array radar systems is addressed. A novel dwell scheduling algorithm is proposed. The whole scheduling process is based on an online pulse interleaving technique. It takes the system timing and energy constraints into account. In order to adapt the dynamic task load, the algorithm considers both the priorities and deadlines of tasks. The simulation results demonstrate that compared with the conventional adaptive dwell scheduling algorithm, the proposed one can improve the task drop rate and system resource utility effectively.

关键词： dwell scheduling pulse interleaving energy constraint priority deadline