UAV Trajectory Validation Between Remote and On-Board Flight Control
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Solution Overview
Problem
Existing electronic control systems for unmanned aircraft do not ensure sufficient integrity of the on-board trajectory, as they lack effective validation mechanisms to compare and align remote and on-board trajectory calculations.
Innovation Solution
An electronic control system comprising a remote flight management device and an on-board flight management device, with a trajectory validation module that acquires and compares remote and on-board trajectory setpoints, validates or rejects the on-board trajectory based on predefined thresholds, and transmits the result to the on-board device, ensuring high integrity of the on-board trajectory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If on-board trajectory calculation is performed independently without validation, then system complexity is reduced and response speed is improved, but trajectory integrity and reliability deteriorate
Solution Approach 1:
The validation module implements a feedback mechanism where the remote device receives the calculated on-board trajectory, compares it against the remote trajectory derived from the same flight plan data, and sends validation results back to the on-board device. This closed-loop feedback ensures trajectory integrity while maintaining independent on-board calculation capabilities.
Solution Approach 2:
The validation module acts as an intermediary between the on-board trajectory calculation and the flight control system. It receives both the on-board trajectory and remote trajectory, performs comparison and validation, then determines whether the on-board trajectory can be used for flight control, thereby mediating the trust relationship between independent calculations.
2Reliability
If remote and on-board trajectory calculations are compared and validated, then trajectory integrity is improved, but communication requirements and system complexity increase
Solution Approach 1:
The validation process extracts only the essential trajectory parameters (position, altitude, speed) from the complete flight data for comparison purposes. By focusing on key parameters rather than transmitting and processing all flight data, the system achieves validation with minimal communication overhead.
Solution Approach 2:
The system performs partial validation by comparing only critical trajectory parameters rather than complete trajectory datasets. This partial action approach provides sufficient integrity assurance while significantly reducing the communication burden and data processing requirements.
3Reliability
If multiple on-board devices calculate trajectories independently, then redundancy and reliability are improved, but coordination complexity and validation difficulty increase
Solution Approach 1:
The validation module merges the trajectories from multiple independent on-board devices into a single validation process. By consolidating the validation of multiple trajectories through a unified comparison mechanism against the remote trajectory, the system manages coordination complexity while preserving the reliability benefits of redundancy.
Data Source
AI summary
Said control system comprises:a remote device comprising:a remote module for acquiring flight plan data, anda remote module for calculating a remote trajectory or a remote setpoint according to the flight plan data;an on-board device comprising:an on-board module for acquiring flight plan data,an on-board module for calculating an on-board trajectory or an on-board setpoint according to the data acquired by the on-board acquisition module.The remote device comprises a module for validating the trajectory which is configured to:acquire the on-board and remote trajectory or setpoint;validate or reject the on-board trajectory or setpoint according to the remote trajectory or setpoint;transmit the result of the validation to the on-board device.