On the control of a class of non-strongly stabilizable SISO plants

© 2020 Elsevier B.V. In this paper, under the limited class of strictly proper, unstable non-strongly stabilizable plants with one real finite positive zero, we have proposed some general designs of a stable compensator which will modify the output of the original plant into one that satisfies the parity interlacing property. Once the parity interlacing properties have been achieved, standard stabilizations can be implemented. We include simulation examples in which an outer PID loop was added to control the stabilized plant to satisfy the tracking of setpoints