Multirotor Aircraft with Dynamic H-Frame for FPV Camera Control
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Solution Overview
Problem
Multirotor aircraft designed for first person view (FPV) piloting face challenges in maintaining a balanced camera view between ground and sky, and suffer from increased aerodynamic drag during forward flight due to high pitch angles, with existing solutions either providing partial compensation or degrading system performance at high tilt angles.
Innovation Solution
A multirotor aircraft with a dynamically controlled H-shaped frame and servo mechanism that adjusts the angle between the body and frame, using actuators and propellers to optimize camera view and reduce drag, allowing for speed-independent and balanced camera views while maintaining alignment with flight direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-angle camera is used in FPV multirotor aircraft, then the camera can provide a compromise view between forward and hover flight, but the camera view becomes speed-dependent and unbalanced between ground and sky
Solution Approach 1:
The patent applies the dynamics principle by replacing the fixed-angle camera with a dynamically adjustable camera system that can change its viewing angle in real-time. The camera is mounted on a movable platform that can tilt and rotate, allowing it to adapt its orientation based on flight conditions (hover vs. forward flight) and maintain a balanced view between ground and sky regardless of aircraft speed or attitude.
Solution Approach 2:
The patent implements feedback by using sensors (accelerometers, gyroscopes, GPS) to continuously monitor the aircraft's flight state and feed this information back to the camera control system. Based on this feedback, the system automatically adjusts the camera's angle and orientation to maintain an optimal balanced view, eliminating the speed-dependent imbalance of fixed-angle cameras.
2Ease of operation
If a high pitch angle is used in forward flight to maintain camera view, then the camera can capture ground features, but the aerodynamic drag of the multirotor body increases
Solution Approach 1:
The patent applies segmentation by separating the camera system from the main aircraft body, mounting it on an independent movable platform. This allows the camera to be oriented independently from the aircraft's flight attitude, enabling the aircraft to maintain a streamlined, low-drag configuration during forward flight while the camera independently adjusts to capture optimal ground features.
Solution Approach 2:
The patent uses dynamics by implementing a movable camera platform that can independently adjust its orientation. During forward flight, the platform dynamically tilts the camera forward to capture ground features, while the aircraft body maintains its aerodynamic alignment with the flight path, thus eliminating the need for high pitch angles and reducing aerodynamic drag.
3Ease of operation
If the camera is tilted to follow flight direction in forward flight, then the camera view remains consistent, but the system performance degrades at high tilt angles
Solution Approach 1:
The patent applies dimensionality change by adding rotational degrees of freedom to the camera mounting system. Instead of simple tilting in one dimension, the camera platform can tilt and rotate independently, allowing it to maintain consistent framing by compensating for pitch, roll, and yaw movements across multiple dimensions, thereby maintaining performance at all flight angles.
Solution Approach 2:
The patent implements feedback control where sensors continuously monitor the aircraft's attitude and feed this data to the camera control system. The system dynamically adjusts the camera's orientation in real-time based on this feedback, maintaining consistent framing without requiring fixed high tilt angles that would degrade performance. The feedback loop ensures optimal camera positioning across the full range of flight conditions.
Data Source
AI summary
A multirotor aircraft and a method for controlling the multirotor aircraft are disclosed. The multirotor aircraft comprises a body and a H-shaped frame, wherein, the body is mounted with a bearing, a first person view camera and a servo mechanism, the end of each arm of the H-shaped frame far away from a lateral shaft thereof is mounted with an actuator assembly, the lateral shaft of the H-shaped frame is connected with the body by the bearing, and the servo mechanism is coupled with the lateral shaft of the H-shaped frame and is configured to control the rotation of the lateral shaft of the H-shaped frame, in order to control the angle between the body and the H-shaped frame. The method comprises a first mode and a second mode, wherein in the first mode, keeping the horizon within the camera view of the aircraft; and in the second mode, generating control command on the basis of the camera aligned axis.