Aircraft Steering Control System Dynamic Wheel Sensitivity Adjustment
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Solution Overview
Problem
Aircrafts face challenges in steering on the ground, particularly at high and low speeds, with existing systems lacking the ability to effectively utilize primary and natural directional controls for stable and maneuverable steering.
Innovation Solution
An enhanced steering system that automatically adjusts the sensitivity and maximum angle of the steerable wheel based on speed, using a steering control system comprising a steering request unit, speed measurement unit, on-ground determination unit, steering control unit, and steering control device, which includes a computer system to optimize wheel position and sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the steerable wheel sensitivity and maximum angle are fixed, then the system is simple to operate, but the aircraft cannot maintain stability at high speeds and maneuverability at low speeds simultaneously
Solution Approach 1:
The patent implements dynamic adjustment of steerable wheel sensitivity and maximum angle based on aircraft speed. The control system continuously monitors speed and automatically modifies steering parameters, transforming the static steering system into a dynamic one that adapts to different operating conditions, resolving the contradiction between adaptability and complexity
Solution Approach 2:
The system changes the parameters of the steerable wheel (sensitivity and maximum angle) according to speed conditions. At high speeds, the system reduces sensitivity and maximum angle for stability, while at low speeds, it increases these parameters for maneuverability, thereby achieving versatile steering performance through parameter modification
2Ease of operation
If the steerable wheel sensitivity is increased for low speed maneuverability, then the aircraft is more maneuverable at low speeds, but the aircraft becomes unstable at high speeds
Solution Approach 1:
The system dynamically adjusts steerable wheel sensitivity based on speed conditions. During high-speed operation, the system automatically reduces sensitivity to prevent over-steering and maintain stability. During low-speed operation, it increases sensitivity to enhance maneuverability, thereby resolving the contradiction between these two opposing requirements
Solution Approach 2:
The control system modifies the sensitivity parameter of the steerable wheel according to speed. By reducing sensitivity at high speeds and increasing it at low speeds, the system achieves both high-speed stability and low-speed maneuverability through conditional parameter changes
3Ease of operation
If the steerable wheel maximum angle is increased for low speed maneuverability, then the aircraft is more maneuverable at low speeds, but the aircraft becomes unstable at high speeds
Solution Approach 1:
The system implements dynamic control of the steerable wheel maximum angle based on speed conditions. The control system automatically limits the maximum angle at high speeds to maintain stability while allowing larger angles at low speeds for improved maneuverability, resolving the contradiction through speed-dependent dynamic adjustment
Solution Approach 2:
The system changes the maximum angle parameter of the steerable wheel according to speed conditions. By reducing the maximum angle at high speeds and increasing it at low speeds, the system achieves both stability and maneuverability requirements through conditional parameter modification
Data Source
AI summary
In some embodiments, the steering of an aircraft is enhanced by the use of a steering control system. The steering control system may include a steering request unit, a speed measurement unit, a steering control unit, and a steering control device. The steering control system is operable to generate and transmit to a steering control device, a wheel position request based on a steering request and the speed of the aircraft.