Wyniki wyszukiwania - BazTech

1

The Joint Vibration Analysis of a Multi-Link Surgical Manipulator

Leniowska L., Leniowski R.

Archives of Acoustics

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2012

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Vol. 37, No. 4

475-482

EN

This paper presents a vibration analysis of a multi-link surgical micromanipulator joint, based on its detailed mathematical model. The manipulator’s prototype contains 6 links with the diameter of 8–10 [mm] and with the length of the modules of about 130 [mm]. It is driven by brushless servomotors with worm and planetary gears, for which the total transmission ratio is above 1/10000. Regarding the low efficiency of micro-robot drive systems and its vibrations, a reliable joint model and its performance is crucial for the development of a high-precision control system. To achieve the required accuracy, modelling framework has been enriched with an advanced model of friction. Simulation results are presented and discussed.

2

Exploiting QuTEM for Improving Joint Angles Estimation in the Context of Clinical Motion Analysis

Stępień J., Lebek K.

Machine Graphics and Vision

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2011

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Vol. 20, No. 3

283-298

EN

This paper describes a statistical procedure designed to work with quaternions (QuTEM) as a useful tool for interpreting recorded joint motion in the particular context of clinical gait analysis. We believe that QuTEM addresses some of the problems of analyzing and interpreting joint motion data acquired using numerous available devices. The theoretical introduction is followed by a measured noise robustness test and two usage scenarios describing actual practical applications of this procedure.

3

Wymiarowanie ścian konstrukcji murowych agodnie z PN-B-03002:1999 na przykładzie elementów silikatowych

Grzelczak M., Jasiczak J.

Foundations of Civil and Environmental Engineering

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2002

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No. 3

37-45

PL

Norma PN-B-03002:1999 „Konstrukcje murowe niezbrojone" wprowadziła tzw. model ciągły jako nowy sposób sprawdzania nośności konstrukcji murowych poddanych ściskaniu, poza dotychczas stosowanym modelem przegubowym. Tok obliczeń według obydwu schematów, jak również przedstawione wykorzystanie nośności ukazują różnice w stosowaniu tych modeli. Obliczenia przeprowadzono na przykładzie ścian z elementów wapienno-piaskowych. Przedstawiono również wyniki obliczeń maksymalnej liczby kondygnacji budynków ze ścianami wykonanymi z silikatów.

EN

Polish Standard PN-B-03002:1999 "The unreinforcemented wall constructions" introduced new methodology of proving the load capacity of squeezed brick constructions - the "continuous" model, along with the hitherto employed "joint" model. The differences in application of those calculation methods are shown on examples of calculation results of load capacity utilization, and comparative analysis of both calculation processes. The calculations were conducted on example of walls made of lime-sand elements. Paper also presents the calculations results determining maximal number of stories for buildings with walls constructed of silicate elements.