Variable Magnetic Motor Control Module for Flux Stability
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Solution Overview
Problem
Conventional techniques for controlling variable magnetic motors face challenges in accurately and efficiently controlling magnetic flux, leading to difficulties in varying magnetic force, especially under sensorless control methods, resulting in unstable and inefficient motor operation.
Innovation Solution
A motor control module and method that applies an increasing or decreasing current to control magnetic flux at predetermined application time points based on the motor's operating state, using a current control unit to generate commands for the inverter to manage the driving current, thereby controlling the magnetic force effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electric current is applied to increase or decrease magnetic flux in a variable magnetic motor, then magnetic force control is achieved, but accurate and stable control is difficult due to sensitive magnetic flux changes
Solution Approach 1:
The patent applies increasing/decreasing current at predetermined application time points determined by motor operating state (speed, torque, temperature) before control errors accumulate. This preliminary action prevents magnetic flux from deviating from desired values, ensuring stable and accurate magnetic force control without waiting for errors to occur.
Solution Approach 2:
The control unit continuously monitors motor operating state (speed, torque, temperature) and uses this feedback information to determine when to apply increasing or decreasing current. This closed-loop feedback mechanism ensures that magnetic flux adjustments are made at appropriate moments, maintaining control stability despite the sensitivity of magnetic flux changes.
2Device complexity
If sensorless control method is applied to variable magnetic motor, then system complexity is reduced, but accurate magnetic flux and speed control becomes difficult
Solution Approach 1:
The patent uses the motor's own operating state parameters (speed, torque, temperature) as feedback signals for determining when to apply increasing or decreasing current. This self-service approach eliminates the need for external sensors while still providing sufficient information for accurate magnetic flux control, maintaining measurement precision without increasing device complexity.
Solution Approach 2:
The patent replaces physical sensors with an electronic control system that calculates magnetic flux control timing based on motor operating state. This substitution of mechanical sensing with electronic computation achieves accurate magnetic flux measurement and control without adding sensor hardware, thus reducing device complexity while maintaining measurement precision.
3Adaptability or versatility
If magnetic flux is sensitively changed with electric current, then magnetic force variation is achieved, but control accuracy decreases due to difficulty in proposing accurate control time points
Solution Approach 1:
The patent dynamically determines application time points based on real-time motor operating state (speed, torque, temperature) rather than using fixed timing. This dynamic approach allows the control system to adapt to changing operating conditions, maintaining control timing accuracy while enabling flexible magnetic force variation across different operating scenarios.
Solution Approach 2:
The patent changes the control parameter from fixed time-based triggering to operating-state-based triggering. By monitoring parameters such as motor speed, torque, and temperature, the system determines the optimal moment to apply increasing or decreasing current, achieving precise control timing that adapts to varying operating conditions and maintains manufacturing precision.
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 approach allows for precise and stable control of magnetic force, enhancing the operational efficiency and performance of variable magnetic motors, overcoming previous limitations and expanding their applicability.
Implementation Method 1
When the electric current is applied to the motor, a magnetic flux is generated in the variable magnet due to electromagnetism.
Implementation Method 2
when the magnetic flux generated in the variable magnet is in the same direction as the magnetic flux direction of a permanent magnet included in the rotor, the magnetic flux is increased by magnetic flux addition
Implementation Method 3
When the magnetic flux is in the opposite direction to the magnetic flux direction of the permanent magnet included in the robot, the magnet flux is decreased by magnetic flux cancellation
Data Source
AI summary
The present specification relates to a motor control module, a motor control device, a motor control system, and a motor control method, and the purpose of the present specification is to provide a motor control module, a motor control device, a motor control system, and a motor control method, which control driving current applied to a motor according to an operating condition of a variable magnetic motor so as to enable magnetic force in the motor to be controlled.