Wide-area flight robust self-adaptive switching control method based on multi-modal division
A technology of robust adaptive and control method, applied in the field of robust adaptive switching control of wide-area flight, can solve problems such as poor practicability, and achieve the effect of facilitating engineering application, improving robustness and improving robustness
Active Publication Date: 2021-07-09
NORTHWESTERN POLYTECHNICAL UNIV +1
View PDF7 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In order to overcome the shortcomings of poor practicability of the existing control methods for wide-area flight switching systems, the present invention provides a robust adaptive switching control method for wide-area flight based on multi-modal division
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0061] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:
[0062] refer to figure 1 , the present invention is based on the multi-modal division wide-area flight robust adaptive switching control method. The specific steps are as follows:
[0063] Step 1: Consider a class of Rocket based combined cycle (RBCC) aerospace vehicles, whose wide-area climb process can be divided into ejection mode, sub-fuel ram mode, scram mode and rocket mode 4 stable modes.
[0064] Write the RBCC aerospace vehicle attitude subsystem as the following multi-input multi-output switching system
[0065]
[0066] Among them, the three-channel attitude angle X 1 =[θ ψ φ] T and attitude angular velocity X 2 =[ω x ω y ω z [ T are the state variables, θ, ψ, φ, ω x , ω y and ω z They are pitch angle, yaw angle, roll angle, roll angular velocity, yaw angular velocity and pitch angular velocity; u σ(t) =[δ x,σ(t) δ y,σ(t) δ z,σ(t...
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
Login to View More Abstract
The invention relates to a wide-area flight robust self-adaptive switching control method based on multi-modal division, and is used for solving the technical problem of poor practicability of an existing wide-area flight switching control method. According to the method, a wide-area flight multi-mode switching system with uncertainty is considered, a second-order nonlinear switching system capable of directly designing a controller is obtained through model transformation, and a stable mode switching controller is designed based on a dynamic inverse method; a neural network is used for approaching system uncertainty, and a finite time convergence robust item is designed based on a nonsingular terminal sliding mode surface; and a transition mode controller is designed based on an inertial link, and soft switching of a multi-mode controller is ensured. According to the wide-area flight robust self-adaptive switching control method based on multi-modal division, the characteristics of the wide-area flight multi-mode process are combined, the robustness of the controller is effectively improved by designing wide-area flight robust self-adaptive switching control based on multi-mode division, smooth switching of control is achieved, the flight safety is guaranteed, and the wide-area flight robust self-adaptive switching control method is suitable for engineering application.
Description
technical field [0001] The invention belongs to the field of aircraft control, and relates to an aircraft control method, in particular to a multi-mode division-based robust adaptive switching control method for wide-area flight. Background technique [0002] With the rapid development of aerospace technology, the envelope of the aircraft is getting wider and wider, making it possible for the aircraft to take off from the ground level and perform wide-area flight. During the wide-area climb, the speed of the aircraft continues to increase to hypersonic speed, and it will play an important role in long-distance rapid transportation, space travel, global rapid strikes, etc. [0003] During wide-area flight, the aircraft may face different power modes, aerodynamic configurations and flight tasks, resulting in multiple flight modes. Multi-mode is a common feature of the aircraft's wide-area climb process. It is necessary to establish different models and design different contro...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042Y02T90/00
Inventor 许斌程怡新尤明戴磊
Owner NORTHWESTERN POLYTECHNICAL UNIV