control (List[qctrl.dynamic.types.RealSegmentInput]) – The list of segments, pairs of a duration and a value \(\{(\delta
t_{\alpha_{k},n}, \alpha_{k,n})\}\), that define the piecewise-constant
control \(\alpha_{k}(t)\). This means that \(\alpha_{k}(t) =
\alpha_{k,n}\) for \(t_{\alpha_{k},n-1} \leq t < t_{\alpha_{k},n}\),
where \(t_{\alpha_{k},0} = 0\) and \(t_{\alpha_{k},n} =
t_{\alpha_{k},n-1} + \delta t_{\alpha_{k},n}\). You must provide at
least one segment.