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Research project

Enhanced Anti-windup Compensation Design Methods for Nonlinear Rigid Body Dynamics with Constrained Inputs

Project overview


While anti-windup compensation (AWC) is well established for linear plants, rigorous development
for nonlinear plants is limited. The proposed research will extend the theory to a certain class
of nonlinear plants: systems governed by rigid body dynamics. Tasks include: I) enhancement of
linear-based AWC techniques using analysis and design methods for a novel static term; and II) ex-
ploitation of nonlinear rigid-body dynamics in direct nonlinear AWC design. The research will also
address the associated problems of III) actuator control allocation and IV) actuator quantization,
which naturally arise in constrained rigid body problems. The main technical challenges will be
to effectively deal with the nonlinear plant dynamics while retaining the architectural and design
simplicity of classical AWC schemes. Outcomes include: a) new theory and tractable numerical
procedures for the synthesis of AWC that account for nonlinear aircraft/spacecraft dynamics, b)
demonstration of the effectiveness of these designs on representative systems and c) recommenda-
tions regarding the merits and drawbacks of the different design methods proposed.

Staff

Lead researcher

Professor Matthew Turner BEng, PhD, MIEEE

Professor in Cyber-Physical Systems

Research interests

  • Adaptive control systems and how they can be made robust and function in situations not originally envisaged
  • Anti-windup algorithms for systems with control signal constraints - retro fits to existing controllers to enable them to function well when actuator position/rate-limits are present
  • Absolute stabilty of systems containing static, isolated nonlinearities - especially efficient, convex algorithms for their analysis
Connect with Matthew

Collaborating research institutes, centres and groups

Research outputs