FUNCTION AND SCALE FOR THE ENTROPY EVALUATION OF THE CURRENT STATE OF SENSORS QUALITY
Abstract
In the article the function and the scale for the entropy evaluation of the current state of sensors quality in the technical system which fits the requirements of universality and maximal independency from the human factor are offered. It is highlighted that the available methods of the determination of the quality of the technical systems have essential flaws which consist in both subjectivism because the dominant role in the evaluation belongs to experts and legitimacy of providing them properties of universality which was proved by nobody.
The offered function of the quality evaluation, the parameter of which is the quantity of own information of the explored sensor, provides the declared universality approach according to the principles of the information theory. The conformity to all requirements for the functions of the evaluation of the quality: continuity, monotonicity and smoothness over the whole range of definition regardless of the probability distribution function, which is measured by the random value sensor was proved. The conformity to all requirements for the functions of the quality evaluation: continuity, monotonicity and smoothness over the whole range of definition regardless of the probability distribution function, which is measured by the random value sensor is proved.
The proposed scale of the entropy evaluation of the quality fits to standard settings of the diagnostic of the technical systems and has three subranges which determine the state of the sensors: good state, up state, and down state. Unlike the existing psychophysical scales the offered scale has dynamic range of the evaluation so the limits of the subranges will automatically change depending on the regulatory and technical requirements for the state of the explored sensor. Such approach provides adaptation of the scale to specific requirements which gives a chance to evaluate the qualitative state of the object more reliably. The results of modeling of the qualitative state of the sensor are given. The possible practical application of the offered function and scale is usage in the systems of monitoring and diagnostic for determination of the current qualitative state of the explored technical system.
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