变循环发动机模式切换控制计划优化方法
By employing C-Bézier curves and multi-objective optimization methods in a variable cycle engine, the open-loop control plan of the adjustable geometry mechanism was optimized, solving the problems of thrust fluctuation and time non-optimization during the mode switching process of the variable cycle engine, and achieving safe, smooth and fast mode switching control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
- Filing Date
- 2024-01-25
- Publication Date
- 2026-07-17
AI Technical Summary
In existing variable cycle engine mode switching control, the mode switching process suffers from large thrust fluctuations, unoptimized switching time, and difficulty in coordinating multiple variables. Furthermore, traditional methods have failed to effectively balance mode switching time and stability.
An open-loop control plan for the adjustable geometry mechanism using C-Bézier curve mapping is adopted. Through multi-objective optimization, the position and time of the adjustable geometry mechanism during the mode switching process are optimized. Based on the NSGA-II algorithm, the optimal mode switching control plan is formulated to ensure safe, smooth and rapid engine switching.
It achieves the shortest mode switching time and the smallest thrust fluctuation, ensuring the smooth operation of the variable cycle engine within the safety boundary and improving the performance of mode switching control.
Smart Images
Figure CN117742158B_ABST