Vacuum Cleaner Adaptive Motor Control for Load-Based Energy Management
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Solution Overview
Problem
Vacuum cleaners face challenges in adapting motor operation to varying loads when cleaning different surfaces, leading to inefficient suction and potential motor damage due to inconsistent current supply.
Innovation Solution
A vacuum cleaner system with a processor that senses motor load and adjusts the speed of both the drum motor and suction motor based on threshold values, reducing speed or terminating operation to prevent overload, and includes a detachable suction module with adaptive control and user notification for load management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor speed is increased to improve cleaning performance on difficult surfaces, then cleaning effectiveness is improved, but motor load increases causing potential damage and energy waste
Solution Approach 1:
The motor speed is made dynamically adjustable based on real-time load detection. The processor continuously monitors motor current and adjusts speed settings according to the detected load level, transitioning from static to dynamic control to optimize both cleaning performance and motor protection
Solution Approach 2:
A feedback mechanism is implemented where the sensor detects motor load and feeds this information to the processor, which then adjusts motor speed accordingly. This closed-loop control ensures the motor operates within safe parameters while maintaining effective cleaning performance
2Productivity
If the motor operates at high speed for all surfaces, then cleaning performance is maintained, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts motor speed based on actual cleaning needs detected through load sensing. Instead of operating at constant high speed, the motor adapts its speed to match the difficulty of the surface being cleaned, reducing energy consumption on easy surfaces while maintaining performance on difficult ones
Solution Approach 2:
The motor operating parameters (speed) are changed based on detected load conditions. The processor modifies speed parameters in real-time according to the cleaning task requirements, optimizing energy efficiency across different operating conditions
3Reliability
If a sensor and processor are added to control motor speed adaptively, then motor protection and energy efficiency are improved, but device complexity increases
Solution Approach 1:
The system performs self-diagnosis and self-adjustment through the sensor and processor that monitor motor load and automatically adjust speed parameters. This self-service capability protects the motor without requiring external intervention or complex manual control systems
Solution Approach 2:
The patent replaces complex mechanical overload protection mechanisms with an electronic sensing and control system. The sensor and processor provide intelligent protection through electrical signal processing, which is less complex than mechanical safety devices
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 system effectively manages motor load across different surfaces, reducing energy consumption, preventing motor damage, and providing user guidance for optimal cleaning performance.
Implementation Method 1
a sensor for sensing a load applied to the first motor
Data Source
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AI summary
Disclosed is a vacuum cleaner. The present vacuum cleaner includes a drum mounted with a brush, a first motor for rotating the drum, a sensor for sensing a load applied to the first motor, a second motor generating suction pressure, and a processor for controlling at least one from the first motor and the second motor according to a size of a load sensed from the sensor.