Four-Stage Continuous-Time Feedback Controller Design

  • Verica Radisavljević-Gajić
  • Miloš Milanović
  • Patrick Rose
Part of the Mechanical Engineering Series book series (MES)


In this chapter, the results of three-stage continuous-time feedback controller design from Chap.  4 are extended to the four-stage feedback controller design. This facilitates independent control of four subsets of system state variables representing four artificial or natural subsystems of a system under consideration. The newly derived technique requires only solutions of reduced-order subsystem level algebraic equations for the design of appropriate local feedback controllers using only the corresponding subsystem state feedback (partial feedback). The local feedback controllers are combined to form a global controller for the system under consideration. The technique presented facilitates designs of independent full-state feedback controllers at the subsystem levels. Different types of local controllers, for example, eigenvalue assignment, robust, optimal in some sense, and observer-based controllers, may be used to control different subsystems. This feature has not been available for any other known linear feedback controller design technique.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Verica Radisavljević-Gajić
    • 1
  • Miloš Milanović
    • 1
  • Patrick Rose
    • 1
  1. 1.Department of Mechanical EngineeringVillanova UniversityVillanovaUSA

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