Distributed aero-engine control design method based on state estimation

Abstract

The invention discloses a distributed aero-engine control design method based on state estimation, and the method comprises the following steps of establishing a distributed aero-engine control systemmodel based on a TrueTime toolbox, establishing a network channel loss model by using a dichotomy, designing a packet loss state estimator based on two types of different Kalman filters and a state estimated value sent based on the state estimator, designing a PI incremental controller, and fusing the packet loss state estimator based on the Kalman filters and the PI controller in the distributedaero-engine control system model based on the TrueTime toolbox. By designing distributed engine control based on the estimated value in the packet loss state, controller errors in the input state aresuppressed, and the accuracy of input information of the controller and the flexibility of controller design are improved. Using TrueTime toolbox for digital simulation is versatile, which is usefulfor analyzing the effects of various parameters on the performance of network control systems.

Description

technical field [0001] The invention relates to the technical field of aero-engine control, in particular to a method for designing distributed control of an aero-engine based on state estimation. Background technique [0002] In the aero-engine distributed control system, signals are transmitted between controllers, sensors and actuators through the network, which is essentially a type of network control system (Network Control System referred to as NCS); TrueTime toolbox is a network control system developed for Based on the Matlab / Simulink simulation platform, the TrueTime toolbox can be used to build a joint simulation environment for the dynamic process, control task execution and network interaction of the distributed real-time control system. In this simulation environment, most scheduling strategies and physical layer network protocols can be studied The impact on the performance of the control system, its control task can be written in C++ code, can also be written ...

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Problems solved by technology

[0003] In NCS, each component needs to exchange system information through a shared network, and data exchange through the network will inevitably lead to problems such as data transmission time delay, packet loss, and data packet timing disorder. During the transmission of the sensor to the controller and the transmission of the control signal from the controller to the actuator, data packet loss or data transmission delay may increase the overshoot of the control system, slow down the response, and prolong the adjustment time, which may even directly cause system failure. unstable, therefore, the present invention proposes a state estimation-based distributed control design method for aero-engines

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