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The Matlab toolbox for modeling complex mechanisms

Pająk I.

International Journal of Applied Mechanics and Engineering

2014

Vol. 19, no. 2

285--301

In the paper, a new version of the Matlab toolbox for modeling and simulation of any mechanisms consisting of open kinematic chains is presented. This tool renders it possible to define any manipulator described by Denavit-Hartenberg parameters and then connect the mechanisms created in this way into one complex mechanism. The package can be used for a realistic visualization of robot motion necessary in research, didactic process or during design of a production cell. Available functions render it possible to show a realistic model of a mechanism based on both default and user defined appearance. The toolbox also provides a set of tools for performing simultaneous simulations of many robots and other objects in their workspace. An example illustrating new features of the toolbox, presenting modeling and motion simulating of human upper limb is also attached.

Modelling of mobile wheeled robot with dynamic drive compliance

Burghardt A., Giergiel J.

Modelling and Optimization of Physical Systems

2010

z. 9

7--12

The work presented the mathematical model of the Amigobot mobile wheeled robot generated by using Appell’s equation. The acceleration function was given and the generalized force was set in order to build the model. Moreover, unknown values of dry friction force were eliminated by using Maggiego’s equation and drives consisting of a brushed DC electric motor and transmission were modelled. The work presented a controlled-measurement environment in which the acquired results of modelling were compared with the real robot.

W pracy przedstawiono matematyczny model mobilnego robota kołowego Amigobot wygenerowany z wykorzystaniem równań Appella. W celu zbudowania modelu podano funkcję przyspieszeń oraz wyznaczono siły uogólnione. Ponadto wyeliminowano z modelu nieznane wartości sił tarcia suchego wykorzystując do tego równania Maggiego zapisane w postaci rzutowej oraz zamodelowano napędy składające się z silników prądu stałego i przekładni. W pracy zaprezentowano środowisko kontrolno-pomiarowe w którym porównano otrzymane wyniki modelowania z rzeczywistym robotem.