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Design of digital flight-mode control systems for helicopters with non-linear actuators

Published online by Cambridge University Press:  04 July 2016

B. Porter
B. Porter*
Affiliation:
Department of Aeronautical and Mechanical Engineering, University of Salford
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Summary

The synthesis of discrete-time tracking systems incorporating Lur’e plants with multiple non-linearities is illustrated by the design of a fast-sampling digital controller and associated transducers for the automatic control of the longitudinal motions of the CH-47 helicopter with both gang-collective and differential-collective non-linearities. In particular, it is demonstrated that non-interacting control of the vertical velocity and pitch attitude of the helicopter is readily achievable for large classes of non-linear actuator characteristics such as ‘deadzone’ provided that the controller and transducer parameters are chosen so as to ensure that state-bounded absolutely stable tracking occurs.

Type
Research Article
Information
The Aeronautical Journal , Volume 89 , Issue 886 , July 1985 , pp. 213 - 218
Copyright
Copyright © Royal Aeronautical Society 1985 

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References

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