Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Variable rotor speed helicopter-vortex engine integrated control method and device

A technology of turboshaft engine and rotor speed, which is applied to the power plant, aircraft parts, transportation and packaging of aircraft, etc. It can solve the problems of not having the ability to simulate the speed of variable rotor speed and being unable to apply closed-loop control, so as to improve the accuracy and reliability. Real-time performance, reducing overshoot and sag, and improving service life

Inactive Publication Date: 2019-06-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF12 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wang Jiankang studied the nonlinear model predictive control technology of turboshaft engine with constrained optimization based on the comprehensive simulation platform of helicopter / turboshaft engine[J], but the transmission The gear ratio of the mechanism is constant, and it does not have the ability to simulate variable rotor speed. Therefore, when constructing the optimization objective function, the influence of rotor load is not considered, and only key parameters such as turboshaft engine speed and fuel are considered, so it cannot be applied to large-scale changes in rotor speed. Closed loop control of turboshaft engine speed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Variable rotor speed helicopter-vortex engine integrated control method and device
  • Variable rotor speed helicopter-vortex engine integrated control method and device
  • Variable rotor speed helicopter-vortex engine integrated control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The technical solution of the present invention will be described in detail below through a preferred embodiment in conjunction with the accompanying drawings:

[0039] Such as figure 1 As shown, the variable rotor speed helicopter-turboshaft engine integrated control device in this embodiment is composed of three parts: the helicopter rotor prediction model, the turboshaft engine prediction model, and the online optimization unit. Both the turboshaft engine prediction model and the helicopter rotor prediction model are obtained offline. Depend on figure 1 It can be seen that within a single simulation step, the turboshaft engine predictive model and the helicopter rotor predictive model predict the output in the future according to the input respectively online, and transmit it to the nonlinear model predictive controller (that is, the online optimization unit). The Sequential Quadratic Programming (SQP) algorithm solves the objective function online, outputs the fue...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a variable rotor speed helicopter-vortex engine integrated control method. The variable rotor speed helicopter-vortex engine integrated control method is characterized in thaton-line optimization of fuel flow rate of a turboshaft engine is carried out on the basis of comprehensive consideration of a speed control index and rotor dynamic characteristics of matching torque through a variable transmission ratio transmission mechanism; under the conditions of satisfying various restrictions such as compressor speed and engine static strength, speed overshoot and sag of a power turbine in the process of variable rotor speed can be significantly reduced, and not only is fast response control of the turboshaft engine realized, but also the service life of the engine is prolonged. Further disclosed is a variable rotor speed helicopter-vortex engine integrated control device. The variable rotor speed helicopter-vortex engine integrated control method and the device thereof have the advantages of significantly reducing the speed overshoot and sag of the power turbine in the process of the variable rotor speed under the conditions of satisfying the various restrictions such as compressor speed and engine static strength, realizing the fast response control of the turboshaft engine, and prolonging the service life of the engine.

Description

technical field [0001] The invention relates to a variable rotor speed helicopter-turboshaft engine comprehensive control method, which belongs to the technical field of system control and simulation in aerospace propulsion theory and engineering. Background technique [0002] The variable rotor speed helicopter has developed very rapidly since its inception. With its excellent air-to-air combat capabilities such as super offensive, maneuverability, surprise, concealment, and sensitivity, the application fields and performance requirements have been continuously expanded, and the flight missions performed have also become diversified. The tasks undertaken have also gradually developed from support functions such as search and rescue and material transportation in the past to functions such as reconnaissance aircraft and ground attack (see [Smith B J, Zagranski R.D. Next Generation Control System for Helicopter Engines[C]]). [0003] When the rotor speed is changed, the vari...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B64D31/00G06F17/50
Inventor 汪勇郑前钢席志华高远张海波
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products