Quantitative Evaluation of Sensor Reconfigurability Based on Data-driven Method

摘要

Sensor reconfigurability is the basis of the fault tolerance of a system. In order to improve the fault tolerance and reliability of sensors in the system, a method of quantitative evaluation of sensor reconfigurability based on a data-driven method is proposed. In this method, an analytic redundancy analysis of sensors in the system is carried out, and the analytic redundancy model is established. Based on this, the quantitative evaluation index of sensor reconfigurability is given by using the similarity evaluation method. Because the possible inaccuracy of the evaluation index results in uncertainties of the system, an adaptive threshold is designed to improve the evaluation accuracy. This method can quantitatively evaluate the reconfigurability of the sensor without depending on the system model, which provides a theoretical basis for improving the fault tolerance of the system at the design stage.