I am in my last semester of a double degrees in the bachelor of electrical engineering (honours) and bachelor of mathematics in Australia. During my studies, I watched a series of video lectures about convex optimization by Stephen Boyd from Stanford university and I got very interested in control theory however my university does not offer research in control theory. As a result, my honor thesis is about signal processing and not control theory.
I am thinking of doing research in control theory for my PhD in the US. Will the graduate admission committee look down at my application because all my research experience is in signal processing but I wish to study control theory as a graduate student?