Flight Yoke Linear Guide and Hall Sensing for Precise Control
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Solution Overview
Problem
Current flight simulation yokes lack realism and precision due to binding, friction, and centering force issues, which hinder small and precise adjustments required for realistic aircraft control.
Innovation Solution
The proposed solution involves a flight yoke design with a linear guide using compliant rolling elements made of polyurethane, which constrain and guide the yoke handle along a linear path, combined with precise low-cost linear position sensing and improved Hall-effect sensing methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If plastic bushings and plain bearings with grease are used to guide the yoke, then the structure is simple and cost-effective, but binding and friction occur that hinder precise adjustments
Solution Approach 1:
The patent replaces the mechanical sliding contact system (bushings and plain bearings) with a magnetic field-based sensing system. Hall-effect sensors detect the position of magnets attached to the yoke components, eliminating the need for physical contact and friction-prone mechanical guides. This substitution resolves the contradiction by removing binding and friction while maintaining structural simplicity.
Solution Approach 2:
The patent introduces magnets as intermediaries between the yoke components and the Hall-effect sensors. These magnets create a magnetic field that mediates the position information transmission without requiring direct mechanical contact, thereby eliminating friction and binding while enabling precise position detection.
2Ease of operation
If linear ball bearings are used to reduce noise and vibration, then the operation smoothness is improved, but the cost and complexity increase
Solution Approach 1:
The patent replaces complex mechanical linear guide systems (such as linear ball bearings) with a magnetic field-based positioning system. Hall-effect sensors track the position of magnets attached to moving components, providing smooth operation detection without requiring complex mechanical guidance structures. This substitution maintains operational smoothness while significantly reducing device complexity.
3Ease of manufacture
If potentiometers are used for position sensing, then the device is simple and low-cost, but precision and reliability are insufficient
Solution Approach 1:
The patent replaces contact-based potentiometric sensing with non-contact Hall-effect sensing. Magnets are attached to the yoke components, and Hall-effect sensors detect their position through magnetic field interaction without physical contact. This substitution maintains cost-effectiveness while dramatically improving position sensing precision and reliability by eliminating wear and contact errors.
Solution Approach 2:
The patent uses magnets as intermediaries to transmit position information to the Hall-effect sensors through magnetic field interaction. This intermediary approach enables non-contact, high-precision position sensing while keeping the system simple and cost-effective, resolving the contradiction between manufacturing simplicity and measurement precision.
4Measurement precision
If Hall-effect sensors are used for position sensing, then precision and reliability are improved, but the cost increases
Solution Approach 1:
The patent implements a multi-function magnetic sensing system where Hall-effect sensors not only detect position but also provide information about yoke orientation and movement. The magnets serve multiple purposes: position indication, orientation reference, and movement detection. This multi-functionality justifies the sensor cost by extracting maximum value from each component.
Solution Approach 2:
The patent uses inexpensive magnets as intermediaries that work with the Hall-effect sensors to provide high-precision sensing. The magnets are simple, low-cost components that create the magnetic field necessary for the sensors to function, thereby reducing the overall system cost while maintaining high measurement precision.
5Device complexity
If an arced path of travel is used instead of linear path, then the need for linear guides and linear position sensing is eliminated, but realism is reduced
Solution Approach 1:
The patent replaces the need for complex linear guide mechanisms by using Hall-effect sensors to directly detect the position of magnets attached to the yoke. This substitution allows the system to maintain linear movement realism while eliminating the mechanical complexity of linear guides, as the sensors can accurately track position regardless of the exact movement path.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design achieves a realistic feel and allows for small and precise adjustments, reducing noise, vibration, and binding, while also providing cost-effective and reliable linear position sensing, thereby enhancing the user experience and realism in flight simulation.
Implementation Method 1
The linear position sensor is a Hall-effect sensor configured for linear position sensing
Implementation Method 2
at least one elastic element configured to reduce the displacement of the magnet along the linear axis by a factor greater than 0.5
Data Source
AI summary
Linear control system for flight simulation and other applications. The system employs a moveable handle and handle shaft configured to receive manual user input for linear in-and-out motion over at least a range of several inches and rotation back and forth about the handle-shaft axis. Various rolling contact mechanisms employing a compliant material of appropriate durometer are used to manage friction. Linear motion is detected using a motion-reducing Hall-effect sensor and magnet device, while rotary motion is detected using a different rotary sensor. The device has at least one onboard processor, which can receive, process, and output various sensor measurements to an outside computerized device (such as a computer running a flight simulation program). The onboard processor can also receive actuator commands from the outside computerized device and use them to control onboard linear and rotary actuators to provide haptic feedback to the user.