Motor Heat Balancing Control for Mobile Device Translational Mechanisms
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Solution Overview
Problem
The variation in load between motors in a vehicle leads to uneven heat generation, resulting in reduced lifetime and performance due to premature functional loss of motors, causing performance deterioration.
Innovation Solution
A mobile device equipped with an energy accumulation component, temperature measurement components, and a control device that adjusts the operating mode of translational mechanisms based on temperature thresholds and heat generation rates to equalize heat generation across mechanisms, thereby extending their lifetime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If motors operate without load balancing control, then productivity and operational simplicity are maintained, but heat generation varies among motors leading to reduced reliability and shortened lifetime
Solution Approach 1:
The control device continuously monitors the operational state of each motor and adjusts the operating modes based on real-time feedback. This feedback mechanism balances the accumulated load among motors, ensuring uniform heat generation and extending motor lifetime without requiring complex manual intervention.
Solution Approach 2:
The system dynamically adjusts the operating modes of motors based on their current thermal state and accumulated load. By making the control system adaptive and responsive to changing conditions, the patent achieves load balancing and heat generation equalization without requiring overly complex predetermined control logic.
2Productivity
If motors operate at high power continuously, then productivity is improved, but heat generation increases causing accelerated deterioration and reduced duration of action
Solution Approach 1:
The control device periodically evaluates the operational state of motors and adjusts their operating modes accordingly. By implementing periodic monitoring and adjustment, the system prevents continuous high-power operation that would lead to excessive heat accumulation, thereby extending motor lifetime while maintaining overall productivity through optimized operation cycles.
Solution Approach 2:
The system changes operational parameters such as power output and duty cycle based on the thermal state of each motor. By dynamically adjusting these parameters, the patent prevents motors from operating in high-heat generation modes when their thermal allowance is low, thus extending motor lifetime while maintaining productivity when conditions permit.
3Reliability
If operating modes are adjusted to balance heat generation, then reliability and duration of action are improved, but energy consumption increases due to less optimal operating points
Solution Approach 1:
The control device adjusts operational parameters to balance heat generation among motors, optimizing the trade-off between reliability and energy consumption. By making intelligent parameter adjustments based on thermal state, the system achieves load balancing without excessively deviating from optimal operating points, thus limiting additional energy consumption while improving reliability.
4Duration of action of stationary object
If temperature monitoring and control are implemented, then heat deterioration lifetime is extended, but device complexity and measurement requirements increase
Solution Approach 1:
The system uses the motors' own operational data and thermal characteristics to monitor and control their temperature state. By leveraging existing sensors and control infrastructure, the patent achieves temperature monitoring and heat generation balancing without requiring extensive additional measurement systems, thus extending motor lifetime while limiting increases in device complexity.
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 reduces the frequency of temperature elevations that shorten the heat deterioration lifetime, allowing for extended operation and reduced risk of motor failure.
Implementation Method 1
a plurality of translational mechanisms for translational movement of the mobile device which actuate by consuming energy accumulated in the energy accumulation component
Implementation Method 2
the control device is configured to control operating mode of each translational mechanism, in accordance with a temperature allowance of each translational mechanism which is a difference between a temperature of each translational mechanism measured or estimated by the first temperature measurement component in the state being smaller than a first temperature threshold value and the first temperature threshold value, or a sum of the difference and a proportional values of a temporal change rate of the difference
Implementation Method 3
An overall heat generation amount of the translational mechanism may be controlled, by adjusting a kinetic energy of the translational mechanism which is converted to a heat generation energy by a dynamic friction of the mechanical braking mechanism
Data Source
AI summary
In the case where a temperature allowance of one translational mechanism of a plurality of the translational mechanisms (the electric motors 31R, 31L) larger than a temperature allowance of the other translational mechanisms, the operation mode of a plurality of the translational mechanisms are controlled so that the heat generation amount of the one translational mechanism becomes larger than the heat generation amount of the other translational mechanisms. By doing so, the difference between the temperature allowances of a plurality of the translational mechanisms is reduced.