Turboshaft engine twin engine torque matching control method and device

Abstract

The invention discloses a method and device for control of bi-engine torque matching of turboshaft engines, wherein bi-engine torque matching of the turboshaft engines is controlled through real-timeoptimization of fuel flow rates of the two engines. The method is characterized in that a rotation speed control index is considered; and the difference between output torques of the two engines is introduced to an objective function as a penalty item. The method is applicable to closed-loop control of dynamic turbine rotation speeds of the turboshaft engines under different flight conditions, effectively reduces overshooting and droop amounts of the dynamic turbine rotation speeds during maneuvering flight of a helicopter, and shortens the time spent on the bi-engine torque matching and completes the rapid control of torque matching while realizing the rapid response control of the turboshaft engines. The invention also discloses a device for control of the bi-torque matching of the turboshaft engines. The method and device disclosed by the invention have the advantages that the overshooting and droop amounts of the dynamic turbine rotation speeds during the maneuvering flight of thehelicopter are effectively reduced; the rapid response control of the turboshaft engines is realized; the time spent on the bi-engine torque matching is shortened; and the torque matching control is completed rapidly.

Description

Technical field [0001] The invention relates to a twin-engine torque matching control method of a turboshaft engine, which belongs to the technical field of system control and simulation in aerospace propulsion theory and engineering. Background technique [0002] Since the 1990s, helicopter electronic systems have developed in a highly integrated direction. The combat environment of modern armed helicopters is becoming more and more severe. Improving attack power and maneuverability has become the goal of helicopters to improve their survivability. The turboshaft engine has become the best choice for modern helicopter power plants because of its higher power reserve and wider flight envelope (see document [A method for rapid response control of turboshaft engine system emergency state]). Due to rotor load requirements, helicopters are often equipped with two or more turboshaft engines running side by side. However, even for the same type of engine, due to manufacturing errors ...

AI Technical Summary

Problems solved by technology

However, the research results only involve the case of a single-engine-driven helicopter, and cannot be applied to the closed-loop control of the speed of the turboshaft engine under the matching of two engines.

Images