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Method and system for model based control for variable pitch fan engines and turbo-shaft, turbo-propeller engines
Method and system for model based control for variable pitch fan engines and turbo-shaft, turbo-propeller engines
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机译：用于变桨距风扇发动机和涡轮轴，涡轮螺旋桨发动机的基于模型的控制的方法和系统
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摘要
A method and control system for an aircraft engine comprising a gas turbine driving a fan propeller with a mechanical gear-train and a dedicated pitch change mechanism for the fan propeller includes a fuel flow signal input; a pitch change mechanism signal input; a controlled plant for relating a pitch change mechanism pitch angle (BetaP) and a fuel flow (Wf) to at least two controlled outputs and a set of constraints. A decoupling control decoupling the controlled plant and/or the constraints into two separate single-input single-output (SISO) control loops for the first and second controlled outputs and a decoupling control decoupling the constraints from the decoupled controlled outputs and the constraints from one another provide gas turbine and fan propeller coordinate control while coordinately controlling constraints and outputs. A feedforward control can compensate the load change effect on engine speed and fan propeller rotor speed control.
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