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A nonlinear robust observer based controller design for twin rotor control system (TRCS) is demonstrated in this paper. The TRCS is an uncertain system with high nonlinearity and strong coupling effects. The TRCS is a replication of a helicopter to some extent. Due to high coupling effect, the controller design of TRCS is challenging as well as interesting. As all the state variables of TRCS are unmeasurable,...
The paper describes the development of an automatic take-off system for helicopter. Design of automatic take-off control system is mandatory for manned as well as unmanned helicopter, which reduce the burden of pilot and increases the flying quality of the vehicle. In this paper, we present an It based automatic take-off system for helicopter. For this purpose, we consider typical four-bladed helicopter...
This paper considers cross-coupling affects in a twin rotor system that leads to degraded performance during precise helicopter maneuvering. This cross-coupling can be suppressed implicitly either by declaring it as disturbance or explicitly by introducing decoupling techniques. The standard Hinfin controller synthesized by loop-shaping design procedure (LSDP) offers robustness at the cost of performance...
In this research, the fuzzy control of the yaw angle of a model helicopter is studied, particularly, in order to reduce the overshoot which can be a serious problem in high inertia systems. Initially, a Sugeno-type controller is designed. This controller provides quick convergence and keeps the control input in a permitted range .Moreover, a good stability is offered by this fuzzy controller. But,...
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