UAV Flight Control Layout With Flexible Interface Board Against Vibration
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Solution Overview
Problem
Unmanned aerial vehicle control devices have low integration levels and are vulnerable to vibration, leading to inaccurate measurements and increased volume due to separate interface boards that are unstable and prone to misplug.
Innovation Solution
A control device with a compact design featuring a shell, inertial measurement device, main flight control circuit board, and flexible interface board, where the flexible interface board integrates multiple interface boards and is attached to the shell to reduce vibration influence and volume, and pin headers on opposite sides with header connectors on the shell to prevent misplug.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate interface boards are used for different functions, then the control device can handle multiple external devices, but the device volume increases and stability decreases due to vibration susceptibility
Solution Approach 1:
The patent combines multiple separate interface boards (power supply interface, data interface, control interface) into a single integrated interface board. This interface board includes multiple interface modules that can independently connect to different external devices, thereby reducing the overall device volume while maintaining the ability to handle multiple external connections simultaneously.
2Adaptability or versatility
If separate interface boards are used for different functions, then the control device can handle multiple external devices, but the reliability decreases due to misplug susceptibility
Solution Approach 1:
The patent employs asymmetric design in the interface board where different interface modules have distinct physical layouts, connector types, and wiring arrangements. For example, the power supply interface uses a specific connector orientation while the data interface uses a different one, making it physically impossible to incorrectly connect devices to the wrong interfaces, thereby preventing misplug errors.
3Adaptability or versatility
If multiple separate interface boards are installed, then various external devices can be connected, but the control device becomes more complex and harder to maintain
Solution Approach 1:
The patent integrates multiple interface functions into a single interface board structure, reducing the number of separate components from multiple interface boards to one unified board. This simplifies the overall device architecture, reduces the number of connection points and mounting locations, and makes maintenance easier by consolidating interface-related troubleshooting to a single component.
4Measurement precision
If inertial measurement device is used for navigation, then the unmanned aerial vehicle can accurately control attitude and position, but the measurement accuracy decreases under vibration conditions
Solution Approach 1:
The patent implements preliminary anti-vibration measures by integrating the inertial measurement device into a damping structure that is pre-designed to counteract vibration effects. The damping structure includes vibration isolation elements positioned between the inertial measurement device and the device housing, which are configured to absorb and dissipate vibration energy before it can affect the sensitive measurement components, thereby maintaining measurement accuracy under vibration conditions.
Data Source
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AI summary
Provided are a control device for unmanned aerial vehicle and an unmanned aerial vehicle. The control device for unmanned aerial vehicle includes a shell, an inertial measurement device fixed in the shell, a main flight control circuit board electrically connected to the inertial measurement device, and a flexible interface board electrically connected to the main flight control circuit board and appressed against the inwall of the shell. At least one external device is connected to two opposite sides of the flexible interface board through the shell.