Singularity-free load distribution algorithms for a 6 DOF parallel haptic device

2004 ◽  
Author(s):  
Hyung Wook Kim ◽  
Jae Hoon Lee ◽  
Byung-Ju Yi ◽  
Il Hong Suh
Keyword(s):  
Load Distribution ◽  
Haptic Device ◽  
Distribution Algorithms

LOAD BALANCING IN CLOUD COMPUTING

2020 ◽  
Vol 13 (1) ◽  
pp. 25-32
Author(s):  
Vladimir Zolnikov ◽  
O. Oksyuta ◽  
Nur Dayub
Keyword(s):  
Cloud Computing ◽  
Load Balancing ◽  
Load Distribution ◽  
Internet Technology ◽  
Distribution Algorithms

Cloud computing is a new Internet technology that focuses on commercial computing. Load balancing helps improve the performance of a centralized server. This paper analyzes various algorithms using the tool of analysis, namely, cloud-based Analytics. A comparison of load distribution algorithms is also made.

A Modular Race Tire Model Concerning Thermal and Transient Behavior using a Simple Contact Patch Description

2013 ◽  
Vol 41 (4) ◽  
pp. 232-246
Author(s):  
Timo Völkl ◽  
Robert Lukesch ◽  
Martin Mühlmeier ◽  
Michael Graf ◽  
Hermann Winner
Keyword(s):  
Load Distribution ◽  
Thermal Condition ◽  
Transient Behavior ◽  
Wheel Load ◽  
Contact Patch ◽  
Fundamental Parameters ◽  
Dry Conditions ◽  
Simple Contact ◽  
Tire Forces ◽  
Descriptive Set

ABSTRACT The potential of a race tire strongly depends on its thermal condition, the load distribution in its contact patch, and the variation of wheel load. The approach described in this paper uses a modular structure consisting of elementary blocks for thermodynamics, transient excitation, and load distribution in the contact patch. The model provides conclusive tire characteristics by adopting the fundamental parameters of a simple mathematical force description. This then allows an isolated parameterization and examination of each block in order to subsequently analyze particular influences on the full model. For the characterization of the load distribution in the contact patch depending on inflation pressure, camber, and the present force state, a mathematical description of measured pressure distribution is used. This affects the tire's grip as well as the heat input to its surface and its casing. In order to determine the thermal condition, one-dimensional partial differential equations at discrete rings over the tire width solve the balance of energy. The resulting surface and rubber temperatures are used to determine the friction coefficient and stiffness of the rubber. The tire's transient behavior is modeled by a state selective filtering, which distinguishes between the dynamics of wheel load and slip. Simulation results for the range of occurring states at dry conditions show a sufficient correlation between the tire model's output and measured tire forces while requiring only a simplified and descriptive set of parameters.

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