Control design for nonlinear systems with non-analytical subsystems

For those complex nonlinear systems with non-analytical subsystems, gain scheduling control and linear parametric varying control can be utilized for performance improvement over the whole operating envelope. Different from the above two control design methods, this paper proposes an operator-based, generalized minimum variance type of control strategy. The advantage of the proposed method is its ease of design and tuning; more importantly it allows the existence of non-analytical modules in the nonlinear system. Such systems are wide-spread in astronautic, aeronautic and industrial systems, illustrating the potentiality of the proposed design methodology. Finally, a simulation study is provided to validate the effectiveness of the proposed design approach.