Movement Mechanism Analysis of Electromechanical Worm Drive

2012 ◽  
Vol 490-495 ◽  
pp. 432-436
Author(s):  
Xue Mei Guan ◽  
Li Zhong Xu
Keyword(s):  
Mechanism Analysis ◽  
Harmonic Drive ◽  
Theoretic Analysis ◽  
Output Torque ◽  
Moment Distribution ◽  
Electromechanical Integrated ◽  
Movement Mechanism ◽  
System Output ◽  
Worm Drive ◽  
Electromechanical Coupled

In this study, an electromechanical integrated electromagnetism worm drive is proposed and its operating principle is introduced. The equations of electromechanical coupled force and the systematic output torque for the drive are given by means of electromagnetism harmonic drive and permanent magnet worm drive transmission principle . By using an example to analysis the system output moment distribution. This paper lays the theoretic foundation for deeper theoretic analysis on drive and manufacture technologies study.

An Electromechanical Integrated Harmonic Piezodrive System

2014 ◽  
Vol 136 (3) ◽  
Author(s):  
Lizhong Xu ◽  
Huaiyong Li
Keyword(s):  
Sliding Friction ◽  
Deformation Energy ◽  
Ultrasonic Motor ◽  
Drive System ◽  
Harmonic Drive ◽  
Operating Life ◽  
Output Torque ◽  
Electromechanical Integrated ◽  
Flexible Ring

An electromechanical integrated harmonic piezodrive system is proposed. The key of the proposed piezodrive system is the integration of the piezodrive principle with the harmonic drive and the movable tooth drive principles, which changes the sliding friction between the rotor and the vibrator into a rolling mesh. It can substantially increase the system's output torque, operating life, and efficiency. In this paper, the design of the drive system and its operating principles are presented. Under piezoelectric excitation, the deformation energy of the flexible ring was analyzed and the output torque of the drive system was calculated, revealing that the drive system produces a higher output torque than does a normal bar-type ultrasonic motor.

Forced Response of Electromechanical Integrated Electrostatic Harmonic Drive to Voltage Excitation

2007 ◽  
Author(s):  
Lizhong Xu ◽  
Cuirong Zhu ◽  
Lei Qin ◽  
Yanling Zao
Keyword(s):  
Forced Response ◽  
Drive System ◽  
Harmonic Drive ◽  
Frequency Responses ◽  
Electromechanical Integrated ◽  
Generalized Force ◽  
Electric Field Force ◽  
Exciting Voltage ◽  
Generalized Coordinate ◽  
Electromechanical Coupled

In this paper, a micro electromechanical integrated electrostatic harmonic drive system is presented. The operating principle of the MEMS is introduced. The exciting electric field force under exciting voltage is given. Based on the electromechanical coupled dynamic equations of the drive system, by generalized force and generalized coordinate, the forced response of the drive system to voltage excitation are obtained. The forced frequency responses of the drive system to voltage excitation are investigated. Changes of the frequency response along with the system parameters are given as well.

scholarly journals Output Torque for Electromagnetic Harmonic Drive

2014 ◽  
Vol 7 (2) ◽  
pp. 721543 ◽  
Author(s):  
Lizhong Xu ◽  
Yongli Liang
Keyword(s):  
Harmonic Drive ◽  
Output Torque

Analysis of Harmonic Gear Drive Efficiency Based on the 3D Simplified Model

2014 ◽  
Vol 1006-1007 ◽  
pp. 249-252
Author(s):  
Xiao Dong Wu ◽  
Meng Liang Bai ◽  
Yuan Li ◽  
Qian Hong Cao ◽  
Xiao Chen Du
Keyword(s):  
Finite Element ◽  
Rotational Speed ◽  
Transmission Efficiency ◽  
Harmonic Drive ◽  
The Finite Element Method ◽  
Gear Drive ◽  
Output Torque ◽  
Transmission Design ◽  
Finite Element Numerical Simulation ◽  
And Performance

This study based on the finite element method, the type of XB1-120-100 harmonic drive output torque and input rotational speed impact on transmission efficiency has been analyzed. The results show that the efficiency of harmonic gear drive increases with the output torque increased, and it has no relation with input rotational speed. When the output shaft takes the value of rated torque (Tout=450Nm), the transmission efficiency of harmonic gear drive obtained by the finite element numerical simulation is 87.1%. This value of transmission efficiency is quite close to the type of XB1-120-100 harmonic drive efficiency (75%-90%). The above analysis method and results have a guiding significance for the transmission design and performance analysis of harmonic gear drive.

Nonlinear Free Vibration for Electromechanical Integrated Toroidal Drive

2012 ◽  
Vol 8 (2) ◽  
Author(s):  
Lizhong Xu ◽  
Fen Wang ◽  
Xiuhong Hao
Keyword(s):  
Operating Performance ◽  
Free Vibrations ◽  
Drive System ◽  
Vibration Frequencies ◽  
Mesh Stiffness ◽  
Nonlinear Free Vibration ◽  
System Parameters ◽  
Noise Radiation ◽  
Electromechanical Integrated ◽  
Electromechanical Coupled

Electromechanical integrated toroidal drive is an electromechanical coupled dynamics system. Here, the electromagnetic nonlinearity occurs which has important effects on the operating performance of the drive system. In this paper, the electromagnetic mesh stiffness is presented and nonlinear electromechanical coupled dynamic equations are deduced. Using the perturbation method, the nonlinear free vibrations of the drive system are investigated. Changes of the nonlinear vibration frequencies along with the system parameters are given. Results show that the electromagnetic nonlinearity has obvious effects on the vibration frequencies of the drive system. The results are useful in maximizing the power density of the drive system and reducing noise radiation.

scholarly journals Global Sensitivity Analysis of Chosen Harmonic Drive Parameters Affecting Its Lost Motion

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5057
Author(s):  
Slavomir Hrcek ◽  
Frantisek Brumercik ◽  
Lukas Smetanka ◽  
Michal Lukac ◽  
Branislav Patin ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Global Sensitivity Analysis ◽  
Important Variable ◽  
Design Parameters ◽  
Harmonic Drive ◽  
Global Sensitivity ◽  
Output Torque ◽  
Wave Generator ◽  
Spline Finite Element ◽  
Geometry Parameter

The aim of the presented study was to perform a global sensitivity analysis of various design parameters affecting the lost motion of the harmonic drive. A detailed virtual model of a harmonic drive was developed, including the wave generator, the flexible ball bearing, the flexible spline and the circular spline. Finite element analyses were performed to observe which parameter from the harmonic drive geometry parameter group affects the lost motion value most. The analyses were carried out using 4% of the rated harmonic drive output torque by the locked wave generator and fixed circular spline according the requirements for the high accuracy harmonic drive units. The described approach was applied to two harmonic drive units with the same ratio, but various dimensions and rated power were used to generalize and interpret the global sensitivity analysis results properly. The most important variable was for both harmonic drives the offset from the nominal tooth shape.

Sign in / Sign up

Export Citation Format

Share Document