S. E. Buznikof, D. S. Elkin, N. S. Shabanov

The comparative analysis of fault-tolerance for sensory and intelligent active safety automotive systems is performed on the example of brake temperature monitoring problem solved at incomplete configuration of measuring means. They consider mathematical model which use linear rotation velocities of wheels as initial data. Nonlinear equation system is used for linear velocities of wheels. The system connects mass center velocity, steering angle and velocities of longitudinal slippages. The method of information redundancy is dealt for the intelligent system. The method is based on the features of wheel rotation equation system allowing to determine the adequate estimations of mass center velocity and steering angle at incomplete configuration of wheel rotation sensors. The adequate estimation of longitudinal wheel slippage rates is based on identifiable dependences of friction forces on slidings. The experimental part presents the results of probes on obtaining the slippages and brake temperatures at a real car. The comparative analysis of fault-tolerance levels shows that information redundancy makes it possible to safe observation of brake temperatures until to complete degradation of system measuring part and to increase fault-tolerance level about for two times to sensory system.