Dynamic rate bound acceptance test approaches

In this paper, an effective dynamic rate bound acceptance test approach is developed. The acceptance test performs a reasonableness check on the controller outputs, based upon critical control theory which leads to least upper bounds of the controller output. It is realised in three different ways, which differ from each other in the implementation of their least upper bounds. They are applicable to any linear, causal, time-invariant control system. The control system is checked dynamically, on-line and in run-time and the tests are able to react to controller demand changes as the controller operates. Engineering knowledge combined with reinterpreted and extended theory enables one to place rate bounds on the controller output signals, depending on the input, in the time domain. Practical implementation of the acceptance tests into a realistic control system has led to the verification of a highly successful fault detection technique.