Research on Adaptive Friction Compensation of Digital Hydraulic Cylinder Based on LuGre Friction Model [PDF]
Shock and Vibration, 2021 This paper aims to eliminate nonlinear friction from the performance of the digital hydraulic cylinder to enable it to have good adaptive ability. First, a mathematical model of a digital hydraulic cylinder based on the LuGre friction model was established, and then a dual‐observer structure was designed to estimate the unobservable state variables in ...
Shouling Jiang +5 more
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Adaptive Friction Compensation for a Novel Two‐Axis Differential Microfeed System
Shock and Vibration, Volume 2022, Issue 1, 2022., 2022 The conventional drive feed system inevitably enters the nonlinear creep region at very low speed. This seriously affects its low‐speed performance and tracking accuracy. The new two‐axis differential microfeed system (TDMS) can overcome the low‐speed crawling and creep phenomenon caused by the inherent characteristics of the traditional ...
Anning Wang +5 more
wiley +2 more sources
A Control Method Based on a Simple Dynamic Optimizer: An Application to Micromachines with Friction. [PDF]
Micromachines (Basel), 2023 In Micromachines, like any mechanical system, friction compensation is an important topic for control design application. In real applications, a nonlinear control scheme has proven to be an efficient method to mitigate the effects of friction. Therefore,
Acho L.
europepmc +2 more sources
An improved LuGre model for calculating static steering torque of rubber tracked chassis
Defence Technology, 2022 Tire and rubber track interchangeable chassis combines the advantages of tire and rubber track, which can greatly improve the maneuverability of military construction machinery.
Kang Liang +6 more
doaj +1 more source
Experimental comparison of five friction models on the same test-bed of the micro stick-slip motion system [PDF]
Mechanical Sciences, 2015 The micro stick-slip motion systems, such as piezoelectric stick-slip actuators (PE-SSAs), can provide high resolution motions yet with a long motion range. In these systems, friction force plays an active role.
Y. F. Liu +4 more
doaj +1 more source
Motion control and singular perturbation algorithms for lower limb rehabilitation robots. [PDF]
Front NeurorobotTo better assist patients with lower limb injuries in their rehabilitation training, this paper focuses on motion control and singular perturbation algorithms and their practical applications.
Xie Y +5 more
europepmc +2 more sources
A Second-Order Dynamic Friction Model Compared to Commercial Stick–Slip Models
Modelling, 2023 Friction has long been an important issue in multibody dynamics. Static friction models apply appropriate regularization techniques to convert the stick inequality and the non-smooth stick–slip transition of Coulomb’s approach into a continuous and ...
Georg Rill, Matthias Schuderer
doaj +1 more source
Force-Free Control for Direct Teaching of a Surgical Assistant Robot End Effector with Wire-Driven Bidirectional Telescopic Mechanism. [PDF]
Sensors (Basel), 2021 This paper shows the design and modeling of an end effector with a bidirectional telescopic mechanism to allow a surgical assistant robot to hold and handle surgical instruments.
Zhang Y, Jeong CS, Kim M, Jin S.
europepmc +2 more sources
Effects of friction models on simulation of pneumatic cylinder [PDF]
Mechanical Sciences, 2019 This study examines effects of three friction models: a steady-state friction model (SS model), the LuGre model (LG model), and the revised LuGre model (RLG model) on the motion simulation accuracy of a pneumatic cylinder.
X. B. Tran +3 more
doaj +1 more source
Proceedings in Applied Mathematics and Mechanics, Volume 23, Issue 2, October 2023., 2023 Abstract Safety and efficiency are key aspects of research and development in the automotive industry, especially in the field of safety‐critical subsystems, such as brake systems. The effect of time delay arise in brake systems, this adverse effect can cause performance degradations or make the brake system unstable.
Ádám Horváth, Péter Béda
wiley +1 more source