The port-Hamiltonian approach has shown to be well suited for the modelling and control of distributed parameter systems (DPSs). Some examples of this class of systems are the waves, beams, open channels, fluid motion, piezoelectric structures, and chemical reactors. In this thesis, we have provided some tools for the design of observer-based state feedback (OBSF) controllers for a class of DPSs. The class of DPSs studied in this thesis is the class of boundary controlled port-Hamiltonian systems (BC-PHSs). These are systems described by partial differential equations with actuators and sensors located at the spatial boundaries. For the synthesis, we have used two approaches: the early-lumping and the late-lumping approach. For the early lu...