An uRT51 real-time processor evaluation

Real-time systems are used in control applications. However, real-time systems may introduce undesirable effects on the control application. Stability, overshoot and settling time are affected when an inadequate real-time system is used. The uRT51 is an embedded processor designed for real-time applications. In this paper we analyse the perturbations that the uRT51 produces on a control application using two of the most important priority disciplines: Fixed Priority (FP) and Earliest Deadline First (EDF). We apply Fourier analysis to measure the frequencial distortion that the real-time system produces on the control application. We use the uRT51 processor and the uRT51 Real-Time Suite to implement both priorities disciplines and to analysis the runtime behaviour of the system. Experiences show that the uRT51 introduces a very low perturbation on control applications with both priority disciplines. Moreover, the real-time performance is improved because the optimal priority discipline EDF is implemented with a neglected overhead.