Flying Device Weight Detection Using Motor DUTY for Takeoff Control
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Solution Overview
Problem
Existing flying apparatuses are unstable when the weight of the transported body exceeds a certain limit, leading to potential overloading and flight inhibition.
Innovation Solution
The flying apparatus includes a weight detecting unit that measures the weight of the transported body and a calculation control unit that prevents takeoff if the weight exceeds a threshold, using DUTY values to control rotor thrust generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the weight of the transported body is measured using a load cell, then the remaining amount of transported material can be detected, but the device complexity increases due to the need for additional weight measuring components
Solution Approach 1:
The motor serves multiple functions: it drives the rotor for flight and simultaneously acts as a weight detection mechanism. By measuring the DUTY value required to maintain a constant rotation speed, the system determines the total weight without requiring separate weight sensors, thus achieving multi-functionality and reducing device complexity
Solution Approach 2:
The motor's own operational parameters (DUTY value) are utilized to detect weight information. The system uses the motor's self-generated data from normal operation to determine total weight, eliminating the need for external weight measurement devices and simplifying the overall system structure
2Force
If the weight of the transported body is excessive, then more thrust is required to lift the flying apparatus, but the flying apparatus becomes unstable and flight is inhibited
Solution Approach 1:
The system performs weight detection and stability assessment before takeoff by measuring the DUTY value at a predetermined rotation speed. If the weight exceeds the threshold, the system prevents takeoff in advance, avoiding unstable flight conditions and ensuring safety before the flight begins
Solution Approach 2:
The system continuously monitors the DUTY value required to maintain constant motor rotation speed and uses this feedback to determine total weight. This feedback mechanism allows the system to assess whether the transported body weight is within safe limits and make appropriate control decisions regarding takeoff
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
Prevents the flying apparatus from taking off in an overloaded state, ensuring stable flight by directly detecting and preventing overloading without the need for a dedicated weight sensor.
Implementation Method 1
a rotor (11); wherein the rotor rotates to generate thrust for causing the airframe base unit (16) to float
Implementation Method 2
a motor (12); wherein the motor rotationally drives the rotor (11)
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
Provided is a flying apparatus and a method for controlling the same which are capable of preventing the flying apparatus from flying in a state where the weight of a transported body is excessive. A flying apparatus 10 comprises: an airframe base unit 16; a rotor 11; a motor 12; a calculation control unit 15; and a weight detecting unit 17. The rotor 11 rotates to generate thrust for causing the airframe base unit 16 to float. The motor 12 rotationally drives the rotor 11. The weight detecting unit 17 detects a weight value of a transported body 18. If the weight value detected by the weight detecting unit 17 exceeds a threshold weight value, the calculation control unit 15 does not permit takeoff.