  This paper considers feedback methods for ensemble reachability of
parameter-dependent linear systems $(A(\theta),B(\theta))$, where the parameter
$\theta$ is varying over a compact Jordan arc in the complex plane. Recently,
pointwise testable sufficient conditions for uniform ensemble reachability have
been developed. Beside the necessity of pointwise reachablility these
conditions put restrictions on the spectra of the matrices $A(\theta)$ and the
Hermite indices of the pair $(A(\theta),B(\theta))$. In this paper we show that
these conditions can be ensured by applying a suitable feedback transformation
if the pair $(A(\theta),B(\theta))$ is pointwise reachable and it Kronecker
indices are independent from the parameter.

Optimization and Control