This paper considers problems of simultaneous stabilization using a linear time-invariant compensator incorporated with a sampler and zeroth-order hold function. It is shown that this controller strongly stabilizes a number of plants which may not be stabilizable by a conventional linear time-invariant controller. A controller design procedure is given which is illustrated by an example.
Zhang, CS., & Blondel, V. (1993). Simultaneous Stabilization Using An Lti Compensator With a Sampler and Hold. International Journal of Control, 57(2), 293-308. https://doi.org/10.1080/00207179308934389 (Original work published 1993)