Controllability Observability

• abinv — AB invariant subspace
• cainv — Dual of abinv
• cont_mat — controllability matrix
• contr — controllability, controllable subspace, staircase
• contrss — controllable part
• ctr_gram — controllability gramian
• dt_ility — detectability test
• obs_gram — observability gramian
• obscont — observer based controller
• observer — observer design
• obsv_mat — observability matrix
• obsvss — observable part
• ui_observer — unknown input observer
• unobs — unobservable subspace