A kind of speed sensorless sliding -mode observers for induction motors has been developed. In this paper a new topology of such observer is investigated in order to determine its feasibility, robustness to parameter changes and practical applicability on digital signal processor. The positive feature of the proposed scheme is that it doesn't require the rotor speed feedback or adaptation, only measured variables such as stator current and DC voltage are required. Experimental results on DSP TI LF2407A, presented in the end of the paper show good correspondence with proposed theory.

A series of measurements like measurement of moment characteristics, moment of inertia and loading characteristics and also measurements of servo drive performances are presented in this paper. The first part of measurement should to confirm agreement with calculated electrical parameters. Second part of measurements should to confirm drive performance (quality) such as accuracy, repeatability, stabilization test and etc. A comparison between measurement results and final specified parameters are given in the last.

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