This note deals with the class of continuous-time linear systems with Marko
vian jumps. We assume that jump rates are controlled. Our purpose is to stu
dy the jump linear quadratic (JLQ) regulator of the class of systems. The s
tructure of the optimal controller is established. For a one-dimensional (1
-D) system, an algorithm for solving the corresponding set of coupled Ricca
ti equations of this optimal control problem is provided. Two numerical exa
mples are given to show the usefulness of our results.