Liquid Container Motion Control for Spill-Free Transport
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Solution Overview
Problem
Existing electronic apparatuses face challenges in preventing liquid overflow and minimizing vibration during transportation, especially when subjected to external forces, as they require significant structural changes and additional work to suppress surface vibrations effectively.
Innovation Solution
An electronic apparatus equipped with a sensor, a driving unit, and a processor that measures external forces, identifies frequencies corresponding to the natural vibration frequency of the liquid, and adjusts its velocity using input shaping control to minimize vibrations and prevent overflow, by performing Fast Fourier Transform and controlling the driving unit based on the identified frequencies and road surface conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical design modification is used to make the container perform circular motion, then liquid overflow is prevented, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical design modifications with a control system that uses sensors to detect liquid surface vibration and a processor to generate control signals that adjust the moving object's velocity. This substitutes mechanical structural changes with an electronic control approach, reducing device complexity while maintaining liquid overflow prevention effectiveness.
Solution Approach 2:
The patent changes the velocity parameter of the moving object dynamically based on detected liquid vibration characteristics. By adjusting velocity according to the liquid's natural vibration frequency and amplitude, the system prevents resonance and overflow without requiring mechanical modifications to the container structure.
2Reliability
If active control through motor is used to control the container or plate, then liquid overflow is prevented, but device complexity increases
Solution Approach 1:
The patent replaces active motor control of the container with control of the entire moving object's velocity. The sensor detects liquid vibration, the processor analyzes the data, and the motor controller adjusts the object's speed, eliminating the need for separate active control mechanisms for the container itself.
Solution Approach 2:
The system uses the moving object's own motion control capability to prevent liquid overflow. By detecting liquid vibration characteristics and adjusting the object's velocity accordingly, the system leverages the existing propulsion system rather than adding separate control mechanisms.
3Reliability
If dynamic absorber is installed to absorb specific frequency, then liquid overflow is prevented, but device complexity increases
Solution Approach 1:
The patent replaces passive dynamic absorbers with an active control system using sensors and processors. Instead of mechanically absorbing vibrations at specific frequencies, the system detects vibrations and adjusts velocity to avoid resonance, eliminating the need for physical vibration absorption components.
4Object-affected harmful factors
If velocity is adjusted according to natural vibration period, then liquid vibration is minimized, but productivity decreases
Solution Approach 1:
The patent applies periodic velocity adjustments synchronized with the liquid's natural vibration period. By making small, periodic velocity changes that counteract the liquid's vibration cycle, the system minimizes harmful vibrations while maintaining overall transportation progress, rather than requiring continuous speed reduction.
Solution Approach 2:
The system applies partial velocity adjustments only when and where needed to counteract liquid vibration, rather than reducing speed continuously. The control processor applies minimal necessary velocity changes to achieve vibration suppression while maintaining overall transportation efficiency.
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
The apparatus effectively prevents liquid overflow and minimizes vibration, maintaining a predetermined target path while reducing the risk of liquid spilling by dynamically adjusting its velocity according to the natural vibration period and external forces, thereby enhancing transportation stability and safety.
Implementation Method 1
measure, at a predetermined time interval based on sensing data received through the sensor, external forces exerted on the electronic apparatus from a ground on which the electronic apparatus is located
Implementation Method 2
perform a Fast Fourier Transform (FFT) to the measured external forces at the predetermined time interval, and identify the frequency having a frequency within a predetermined range from the natural vibration frequency among the frequencies of the external forces
Implementation Method 3
input a driving signal to the driving unit, based on a size of the identified frequency, the driving signal controlling a velocity of the electronic apparatus according to a natural vibration period of the liquid
Data Source
AI summary
An electronic device and a method of driving the same are provided. The electronic device includes a container; a sensor; a driving unit; and a processor configured to: based on sensing data received through the sensor, measure, at a predetermined time interval, external forces exerted on the electronic apparatus from a ground on which the electronic apparatus is located, identify, based on frequency characteristics of the external forces and a natural vibration frequency of a liquid contained in the container, a frequency having frequency characteristics corresponding to the natural vibration frequency among frequencies of the external forces, and input a driving signal to the driving unit, based on a size of the identified frequency, the driving signal controlling a velocity of the electronic apparatus according to a natural vibration period of the liquid.