Results 81 to 90 of about 14,180,617 (194)

Pre-Compensation Strategy for Tracking Error and Contour Error by Using Friction and Cross-Coupled Control

Machines
This paper focuses on improving the tracking accuracy for servo systems and increasing the contouring performance of precision machining. The dynamic friction during precision machining is analyzed using the LuGre model. The dynamic and static parameters
Minghao Liu, Yongmin Zhu, Hongliang Xu, Weirui Liu, Hui Yang, Xingjun Gao   +5 more
doaj   +1 more source

Study on dynamic characteristics and compensation of wire rope tension based on oil pressure sensor

Advances in Mechanical Engineering, 2019
The oil pressure sensors are installed on the hydraulic connection device to monitor the tension of wire ropes. The change of acceleration during the operation process of hoist causes the tension change of each wire rope.
Gaoyang Lei, Guiyun Xu, Xiaoguang Zhang, Baolai Tian   +3 more
doaj   +1 more source

A new iterative identification algorithm for estimating the LuGre friction model parameters [PDF]

, 2023
The parameters of dynamic friction models like the LuGre model are commonly identified by computationally intensive nonlinear optimization methods.
Mahmoudkhani, Saeed, Gorenstein, Johnathan, Ahmadi, Keivan   +2 more
core  

Dynamic Analysis of the Sucker-Rod Pumping System of Deviated Well Based on LuGre Friction Model

, 2010
Based on the LuGre friction model, the nonlinear dynamic characteristic of a sucker-rod pumping system of deviated well is simulated. Firstly, the LuGre friction model is introduced, and the values of its six model parameters, which satisfy the ...
Hong Zhao Liu, Bai Xi Liu
core   +1 more source

Estimation and Compensation of the LuGre Friction Model in High-Speed Micro-Motion Control

, 2017
Static friction compensation is usually required to reduce friction in precision motion control and manufacturing processes. Micro-motion control is a current trend for precision machining in the electronics industry.
Cong-Zhi Huang, S. Yeh, Pau-Lo Hsu
semanticscholar   +1 more source

Adaptive Controller Based on Spatial Disturbance Observer in a Microgravity Environment

Sensors, 2019
In this paper, a new controller for an operating manipulator work in the space microgravity environment is proposed. First, on the basis of the load variation caused by microgravity, a sliding mode control method is used to model the gravity term, and ...
Chunguang Fan, Zongwu Xie, Yiwei Liu, Chongyang Li, Hong Liu   +4 more
doaj   +1 more source

MODELING AND SIMULATION OF SINGLE LOOP PLANETARY TRANSMISSION SYSTEM BASED ON BOND GRAPH THEORY

Jixie qiangdu, 2017
Based on bond graph theory,considering the time-varying meshing stiffness,damping and tooth surface friction force of internal and external gear,using LuGre friction model,the bond graph model of NGW type planetary gear was established. And then,the bond
ZHANG BaoFeng, CUI YaHui, ZHANG An, LIU Kai, GUO Kun   +4 more
doaj  

Model generation and parametric study of stick-slip induced vibration for mechanics under friction

Journal of Low Frequency Noise, Vibration and Active Control
As friction is inherently nonlinear, simulating its dynamics in a system is never an easy process. The study suggests a novel friction model that mimics the stiction friction model using sigmoid and exponential functions. The friction force value at 0.01 
Jitendra Yadav, Roushan Kumar, Adesh Kumar, Brijesh Gangil, Lalit Ranakoti, Shubham Sharma, Kuldeep Sharma, Rakesh Kumar, S Rajkumar, Krishnaraj Ramaswamy   +9 more
doaj   +1 more source

Energetic Model of the Tire-Ground Interaction and Comparison with LuGre Friction Model

, 2010
In this paper the energetic dynamic model of the tire-ground interaction in a vehicle is presented and a comparison with the LuGre friction model is given. The Power-Oriented Graphs (POG) technique is exploited for both representing and analyzing the two
R. Zanasi, GROSSI, Federica, F. Grossi, ZANASI, Roberto   +3 more
core   +1 more source

Evaluation of LuGre Tire Friction Model with Measured Data on Multiple Pavement Surfaces

, 2010
Accurate modeling of tire/pavement friction phenomena is of utmost importance in many applications such as vehicle braking control and frictional evaluation of pavements.
M. P. Rajapakshe, A. K. Kaw, Gunaratne, M., Kaw, Autar, M. Gunaratne, Rajapakshe, M.P.   +5 more
core   +1 more source