Experimental demonstration of reset control design

摘要

Using the describing function method, engineers in the 1950s conceived of nonlinear compensations in an attempt to overcome performance limitations inherent in linear time-invariant (LTI) control systems. This paper is concerned with a subset of such devices called "reset controllers", which are LTI systems sequined with mechanisms and laws to reset their states to zero. This paper reports on a design procedure and a laboratory experiments, the first to be reported in the literature, in which the resulting reset controller provides better design tradeoffs than LTI compensation. Specifically, it is shown that reset control increases the level of sensor-noise suppression without sacrificing either disturbance-rejection performance or gain/phase margins.