Aircraft Braking Control System for Deceleration Precision
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Solution Overview
Problem
Current aircraft braking systems lack efficient control mechanisms for deceleration during landing, taxiing, or Rejected Take-Off events, particularly in managing deceleration rates and maintaining a steady course amidst varying environmental and operational conditions.
Innovation Solution
An aircraft braking system comprising a control mode executive, pedal deceleration controller, and pedal executive that calculates and generates deceleration commands based on pilot input, speed thresholds, and feedback to apply appropriate braking forces to maintain control and stability, incorporating an autobrake controller and pedal balance system for adaptive deceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple pedal-based braking system is used, then the device complexity is reduced, but the deceleration control precision and ability to maintain steady course deteriorate
Solution Approach 1:
The patent implements feedback control by continuously monitoring actual deceleration rate and course deviation, then adjusting brake commands accordingly. The control system receives feedback on aircraft deceleration performance and course keeping status, and modifies braking commands to achieve desired deceleration rate and maintain steady course, directly resolving the contradiction between simple structure and precise control.
Solution Approach 2:
The patent replaces traditional mechanical braking linkages with an electronic control system that processes sensor data and generates automated brake commands. This substitution enables sophisticated control algorithms to manage deceleration precision without requiring complex mechanical linkages, achieving high measurement precision while maintaining relatively simple device structure.
2Reliability
If adaptive deceleration control is implemented, then the reliability of safe braking is improved, but the device complexity increases
Solution Approach 1:
The control system performs multiple functions including deceleration rate control, course keeping, and adaptive adjustment to environmental conditions within a single integrated architecture. This multi-functionality improves braking reliability by coordinating multiple control objectives simultaneously without proportionally increasing device complexity, as the same control unit handles various control tasks.
Solution Approach 2:
The system automatically adjusts braking parameters based on real-time sensor feedback and pre-stored environmental data without requiring manual intervention. The control system self-regulates brake commands according to actual deceleration performance and course deviation, improving reliability while minimizing the need for additional complex control mechanisms.
3Adaptability or versatility
If environmental factors are considered in deceleration control, then the adaptability to varying conditions is improved, but the complexity of control algorithms increases
Solution Approach 1:
The system pre-stores environmental condition data and corresponding optimal control parameters before actual braking operations. By preparing environmental adaptation strategies in advance, the control algorithm can quickly retrieve and apply appropriate parameters when specific environmental conditions are detected, improving adaptability without requiring complex real-time calculations during braking.
Solution Approach 2:
The control algorithm adjusts braking parameters such as brake force magnitude and application timing based on detected environmental conditions like surface friction and wind. By changing control parameters according to environmental factors rather than redesigning the entire control algorithm, the system achieves high adaptability while maintaining relatively simple algorithmic structure.
Data Source
AI summary
Systems and methods for aircraft braking are disclosed. The systems and methods may comprise a control mode executive configured to receive a pedal input and calculate a gear deceleration command comprising a desired deceleration rate based on the pedal input; a pedal deceleration controller in electronic communication with the control mode executive configured to receive the gear deceleration command from the control mode executive and calculate a gear pedal command based on at least one of the gear deceleration command and a deceleration feedback; and a pedal executive in electronic communication with the pedal deceleration controller configured to receive the gear pedal command, and generate a pedal braking command based on the gear pedal command.