Thrust Reverser Actuator Synchronization via Real-Time Position Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing thrust reverser systems face challenges in synchronizing multiple electric actuators, leading to potential desynchronization, jamming, deformation, or breakage of the movable cowl during position changes between 'direct jet' and 'reverse jet' positions, which can increase braking distance and risk of mechanical failure.
Innovation Solution
A method that measures real-time position differences between adjacent actuators and adjusts their speed profiles to maintain synchronization, including acceleration or deceleration of lagging or leading actuators, and step-by-step control of healthy actuators to prevent jamming and deformation, with the option to stop the system if deviations exceed safe thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple electric actuators are used to move the cowl, then the productivity and reliability of the thrust reverser system is improved, but the risk of actuator desynchronization increases, leading to potential jamming or deformation of the movable cowl
Solution Approach 1:
The patent implements a feedback mechanism where the control unit continuously monitors the position of each actuator and compares it with reference positions. When position deviations are detected, the control unit automatically adjusts the speed profile of individual actuators to maintain synchronization, thereby preventing jamming and deformation while preserving system reliability
Solution Approach 2:
The patent applies dynamic speed profile adjustment to actuators based on real-time position feedback. The control unit modifies acceleration and deceleration parameters dynamically during operation, allowing actuators to adapt their motion characteristics to maintain synchronization and avoid harmful effects like jamming
2Manufacturing precision
If the speed profile of actuators is adjusted in real-time to maintain synchronization, then the position precision and operational safety are improved, but the control system complexity increases
Solution Approach 1:
The patent changes operational parameters (speed profile, acceleration, deceleration) of actuators based on detected position deviations. The control unit adjusts these parameters dynamically to maintain synchronization precision while managing control complexity through automated feedback-based parameter modification
3Manufacturing precision
If position deviations between actuators are corrected by accelerating lagging actuators, then the synchronization is improved, but the mechanical stress and energy consumption increase
Solution Approach 1:
The patent dynamically adjusts the speed profile of actuators based on real-time position feedback. When position deviations are detected, the control unit modifies acceleration and deceleration parameters to maintain synchronization while attempting to minimize mechanical stress through controlled, gradual adjustments rather than abrupt changes
Data Source
AI summary
The invention relates to a method for controlling a plurality of actuators (9a, 9b, 9c) for a movable thrust reverser cowl (1), characterized remarkable in that the position deviation between adjacent actuators is measured in real time, and in that the speed profile of the actuator or actuators in question is adjusted by a position deviation exceeding a predetermined threshold.