Aircraft Torque Feedback Control for Overtorque Prevention
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Solution Overview
Problem
Existing aircraft control systems lack efficient integration of engine torque feedback into power control architectures, leading to potential overtorque conditions and suboptimal engine performance across varying flight conditions.
Innovation Solution
The proposed aircraft control system incorporates a longitudinal control module, an engine torque control module, and an actuator control system. These modules work together to generate desired torque and elevator position values based on airspeed and altitude setpoints, and adjust power lever positions to prevent overtorque while optimizing engine performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional aircraft control systems are used without engine torque feedback integration, then the system structure remains simple, but overtorque conditions occur and engine performance becomes suboptimal
Solution Approach 1:
The patent implements engine torque feedback by measuring actual engine torque and comparing it with desired torque values. The engine torque control module continuously adjusts the power lever position command based on the difference between measured and desired torque, creating a closed-loop control system that prevents overtorque conditions and optimizes engine performance across varying flight conditions.
Solution Approach 2:
The patent introduces an engine torque control module as an intermediary component between the longitudinal control module and the actuator control system. This intermediate module processes torque information and generates appropriate power lever position commands, serving as a mediator that integrates torque feedback into the existing control architecture without requiring complete system redesign.
2Reliability
If engine torque feedback is integrated into power control architecture, then overtorque conditions are prevented and engine performance is optimized, but the control system complexity increases
Solution Approach 1:
The engine torque control module performs multiple functions: it receives desired torque from the longitudinal control module, measures actual engine torque, compares these values, generates power lever position commands, and outputs commands to the actuator control system. This multi-functional approach consolidates control logic into a single module, reducing overall system complexity while achieving reliable torque management.
3Measurement precision
If high-fidelity engine dynamics model is used for torque control, then control precision is improved, but system complexity and computational requirements increase
Solution Approach 1:
The system uses direct measurement of actual engine torque through sensors rather than relying on complex computational models to estimate torque. The engine torque control module compares the directly measured torque with desired torque values and makes real-time adjustments, achieving precise control without requiring high-fidelity engine dynamics models or extensive computational resources.
Data Source
AI summary
An aircraft control system includes a longitudinal control module, an engine torque control module, and an actuator control system. The longitudinal control module is configured to generate a desired torque value and a desired elevator position value for an aircraft based on a desired airspeed value, a desired altitude value, an actual airspeed value, and an actual altitude value. The engine torque control module is configured to generate a desired power lever position value based on the desired torque value and a measured engine torque value that indicates a measured engine torque in the aircraft. The actuator control system is configured to generate a power lever position command and an elevator position command for the aircraft based on the desired power lever position value and the desired elevator position value.