Simulator Joystick Force Calibration With Direct Handle Measurement
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Solution Overview
Problem
Current flight simulator joystick force calibration methods lack a fixed reference standard, leading to deviations between calibrated joystick forces and actual aircraft feedback, and non-intuitive measurement data due to sensor positioning at the force-receiving end, compromising training effectiveness and safety.
Innovation Solution
A method involving direct measurement of joystick forces at the force-applying end using dynamometers, combined with software analysis, to establish a standardized simulator joystick force parameter based on actual aircraft feedback, ensuring precise calibration and alignment with industry standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If force sensors are disposed at the mechanical transmission end (force-receiving end), then device complexity is reduced, but measurement precision deteriorates due to deviations from actual joystick forces
Solution Approach 1:
The patent inverts the traditional sensor positioning approach by placing force sensors at the force-applying end (joystick handle) instead of the force-receiving end (mechanical transmission end). This inversion allows direct measurement of the actual force applied by the pilot, eliminating transmission losses and measurement deviations, thereby resolving the contradiction between device complexity and measurement precision.
2Device complexity
If multiple mechanical connections are used between force-receiving end and force-applying end, then device complexity is reduced, but measurement precision deteriorates due to force transmission deviations
Solution Approach 1:
The patent extracts the force measurement function from the mechanical transmission system by placing sensors directly at the force-applying end. This extraction eliminates the need for multiple mechanical connections between measurement points, removing the source of force transmission deviations while maintaining structural simplicity.
3Ease of operation
If software calibration is used without fixed reference standard, then ease of operation is improved, but manufacturing precision deteriorates due to varying deviations from actual joystick forces
Solution Approach 1:
The patent enables the calibration system to self-correct by using the accurately measured force data from the force-applying end sensors as a reference. The system automatically identifies and corrects deviations in the mechanical transmission path without requiring external reference standards or complex calibration procedures, maintaining ease of operation while improving precision.
Data Source
AI summary
A simulator joystick force calibration method aims to solve problems such as low simulation fidelity of joystick forces that compromises training effectiveness, lack of a fixed reference standard, and the positioning of measurement sensors that leads to non-intuitive force sensing data with significant deviations. The method includes: recording joystick forces at all positions via sensors connected in a joystick; obtaining actual flight force feedback from a standard aircraft instructor; determining whether the joystick forces are normal; if yes, moving, based on different positions of a force measurement surface, the joystick to different angles by dynamometers; recording joystick force values displayed on the dynamometers at each angle, and comparing the joystick force values with corresponding verified normal simulator data; and calculating an average as a standard simulator joystick force parameter. The method can rapidly identify and correct joystick force deviations, and enable dynamic adjustments based on actual flight feedback.