UAV Take-off Control via Rotor Acceleration and Height Feedback
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Solution Overview
Problem
Current UAV take-off methods require skilled operators to manage attitude balance and propulsion power, and hand launching lacks consistency in achieving safe and normal flight states.
Innovation Solution
A method and apparatus for controlling UAVs that initiate rotor operation with a preset rotation acceleration upon receiving a take-off signal, detect current height, and send a hover signal to maintain altitude once the height reaches a threshold, enabling autonomous hovering and stable flight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a professional user manually controls take-off by manipulating remote control device, then the UAV can achieve safe and normal take-off, but the user requires high operating capability and skill
Solution Approach 1:
The UAV performs self-take-off by automatically controlling rotor rotation acceleration and detecting take-off status without requiring manual intervention. The system monitors its own height and propulsion power, and autonomously adjusts parameters to achieve safe take-off, making the device serve itself rather than requiring continuous human operation.
Solution Approach 2:
The system continuously detects take-off status information including current height and compares it with threshold values. Based on this feedback, the controller automatically adjusts rotor rotation acceleration to maintain safe take-off, creating a closed-loop control system that ensures reliability while reducing manual operation requirements.
2Ease of operation
If hand tossing method is used to launch UAV, then user operating capability requirement is reduced, but the consistency and reliability of achieving safe flight state is poor
Solution Approach 1:
The system continuously detects take-off status information including current height and compares it with threshold values. Based on this feedback, the controller automatically adjusts rotor rotation acceleration to maintain safe take-off, creating a closed-loop control system that ensures reliability while reducing manual operation requirements.
Solution Approach 2:
The system automatically controls the rotation acceleration parameter of the rotor during take-off, changing it from a manual control variable to an automatically adjusted parameter. The controller monitors height and propulsion power, and dynamically adjusts rotation acceleration to ensure consistent and reliable take-off performance.
3Reliability
If manual control of propulsion power output is required during take-off, then take-off safety is maintained, but the operation complexity increases
Solution Approach 1:
The UAV performs self-take-off by automatically controlling rotor rotation acceleration and detecting take-off status without requiring manual intervention. The system monitors its own height and propulsion power, and autonomously adjusts parameters to achieve safe take-off, making the device serve itself rather than requiring continuous human operation.
Solution Approach 2:
The system continuously detects take-off status information including current height and compares it with threshold values. Based on this feedback, the controller automatically adjusts rotor rotation acceleration to maintain safe take-off, creating a closed-loop control system that ensures reliability while reducing manual operation requirements.
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 solution reduces operator skill requirements and ensures consistent, safe take-off and hovering of UAVs, facilitating more reliable and efficient autonomous flight operations.
Implementation Method 1
initiating the at least one rotor to operate with a first preset rotation acceleration
Data Source
AI summary
A method for controlling an unmanned aerial vehicle (UAV) is provided. The UAV comprises at least one rotor. The method includes receiving a take-off signal; initiating the at least one rotor to operate with a first preset rotation acceleration in response to the take-off signal; detecting a take-off status information of the UAV, the take-off status information at least comprising a current height of the UAV; determining whether the detected current height of the UAV is equal to or greater than a threshold; and sending a hover signal to the at least one rotor to enable the UAV to hover in the current height in response to the determination that the detected current height of the UAV is equal to or greater than the threshold.