At present the automated moving of a robot is made possible by a complete measurement system including GPS, laser scanners, radars and static cameras. Such approach is reliable but rather expensive. In this paper the optimal operation of a three camera system on a four-wheel robot is studied. The benefit of the dynamic camera system over the complete static measurement system is the reasonable price and the possibility to focus at certain directions.

This paper traces the history of conceptual pre-conditions and shifts in epistemic practice, which laid foundations for the proliferation of Rasch analysis in scale development. New methods (1960s) saw shifts in educational measurement. With new computing techniques (1990s), Rasch measurement transformed scale development practice in social and clinical sciences. It is illuminating to uncover latent historical conditions that have contributed to Rasch measurement’s current realm of application.

A rotational speed measuring and calibration system based on the Laser Doppler Velocimetry is proposed in this paper. The rotational speed of a motor in the system can be determined by measuring the tangential linear velocity of a rotating reference disc mounted on the motor shaft with a Laser Surface Velocimeter. Measuring deviations caused by manufacturing and mounting errors of the reference disc are analyzed and compensated. Therefore, a measuring accuracy of better than 0.1% is realized.

This paper introduces research of magnetic fields with special attention to distortion of induction in the air-gap of a linear magnetic brake and effects of this distortion. This work is part of a research project aiming to find the most efficient and accurate method for development of linear magnetic brake for dynamic tests in industrial applications. In such applications characteristics of the braking force should be precisely defined and generated therefore control of this system requires highly reliable and accurate function definition between the braking force and the controlling current. In this part of the research dependency between the force and current is analysed, new measurement and analysing system is developed for special requirements, simulation results and real test results are presented in the paper. Results of the diagnostics are used to define braking effects and for development of compensation methods used in dynamic systems.

The paper presents a new approach to design of adaptive measurement systems (AMS) for top-precision wide range measurement of physical excitations (acceleration, pressure, etc.). AMS include the array of compensatory sensors adaptively adjusted using the analog-digital compensating circuits and digital data processing unit (DPU). The measurement of an input excitation is realized as iterative improvement of its estimates using data consequently delivered to DPU by the sensors with growing sensitivities. The principles of the system operation and optimal algorithm for the AMS control and estimation of the input excitation are described. The particularity of the AMS operation is elimination of saturation of the sensors at the confidence level provided by the proper choice of their sensitivities.