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Uncertainty Modeling of Measurement Systems

Waluś K. J.

Machine Dynamics Research

2011

Vol. 35, No. 2

89-97

Modeling of the measurement systems consists in their decomposition on elementary units. Elementary models constructed due to the need to simplify the representation is limited to their functions and layout connections. This paper was presented to the decomposition of the measurement system components elementary imputation method for the measurement uncertainty of the components and the algorithm of the statistical analysis of the results of simulations. The entire process of modeling the measuring apparatus shown in the example of an existing sensor-based devices accelerations and piezogyroscope.

Determining of Motorcycle Movement Parameters Basing on Experimentally Obtained Characteristics of Braking Deceleration

Waluś K. J., Lewandowski A., Kędziora K.

Machine Dynamics Problems

2008

Vol. 32, No. 1

105-112

Possibility of speed reducing with high intensity is one of the most significant dynamic parameters conditioning usage safety of vehicles in road traffic. Although cars' braking effectiveness was broadly recognized and described (Dudziak, 2002; Gaca, 2002; Gillespie, 1992; Ślaski et al., 2001), but there are considerable difficulties with finding information concerning motorcycle braking effectiveness. In this elaboration there are presented results of braking of sport motorcycles Honda CBR 900RR (sport motorcycle of high engine cubic capacity and high horsepower) and Junak Millenium (motorcycle rated to two-wheel vehicles class type cruiser). Results of carried out road tests were registered with measuring system of our own design based on acceleration sensors and piezogyroscope. During tests, motorcycles were accelerated and then broken with maximal possible to obtaining deceleration.

Experimental Evaluation of Dynamical Measurements Accuracy Basing on the Length of Breaking Distance of a Motor Car

Lewandowski A., Waluś K., Dudziak M.

Machine Dynamics Problems

2006

Vol. 30, No. 2

96-102

In the article there are shown the results of the experimental verification of dynamical parameters of car movement. The experimental verification was carried out by measurement of accelerations and angular velocity of car bodywork tilting using piezo-gyroscope and acceleration sensors. Besides for each test of intensive breaking there was statically measured the distance traveled by the car. There were carried out the statistical analysis and determined the measurement accuracy of designed appliance.