LPTV loop-shaping with application to non-equidistantly sampled precision mechatronics

Flexible sampling strategies, such as non-equidistant sampling, potentially enhance the performance/cost trade-off present in traditional fixed sampling schemes. The aim of this paper is to develop a systematic feedback control design approach for systems with flexible sampling. A framework for stability and performance analysis based on frequency response function measurements is presented. The framework enables loop-shaping feedback control design for non-equidistantly sampled systems based on LTI insights. Application of the framework in a case study demonstrates the use for feedback control design and the potential of non-equidistant sampling.