Motor Control Model Update for Aging Deterioration
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Solution Overview
Problem
Existing motor control systems struggle to maintain optimal operation and energy efficiency as motor characteristics change due to aging deterioration and load changes, leading to suboptimal power source utilization in industrial and transportation machines.
Innovation Solution
An apparatus control system that includes a motor control device with a calculation model and an update unit, which estimates the actual state of the motor and apparatus using state information and updates the calculation model to maintain optimal operation and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the estimation model is updated based only on power consumption, then the power consumption accuracy is improved, but the motor characteristic changes due to aging deterioration cannot be detected
Solution Approach 1:
The patent introduces an intermediary variable (output of the industrial apparatus or transportation machine) that mediates between power consumption and motor characteristics. By updating the estimation model based on this intermediary variable rather than directly using power consumption alone, the system can detect motor characteristic changes due to aging while maintaining accurate power consumption measurement capability.
2Device complexity
If the estimation model is not updated frequently, then the device complexity is reduced, but the motor cannot be driven in optimal condition under changing load and aging conditions
Solution Approach 1:
The patent implements a feedback mechanism where the estimation model is continuously updated based on actual output measurements of the industrial apparatus or transportation machine. This feedback loop enables the system to adapt to aging deterioration and load changes automatically, maintaining optimal motor operation efficiency without requiring complex manual intervention or frequent updates.
3Adaptability or versatility
If the estimation model uses multiple parameters including output information, then the adaptability to aging and load changes is improved, but the measurement and calculation complexity increases
Solution Approach 1:
The patent makes the estimation model universal by designing it to handle multiple functions: it can estimate motor characteristics, detect aging deterioration, adapt to load changes, and optimize operation efficiency all through a single integrated model update mechanism that uses output information as a common parameter across different operating conditions.
Data Source
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AI summary
Provided is an apparatus control system which is capable of driving a motor or an apparatus in an optimal condition by estimating a state of the motor or the apparatus and automatically optimizing a parameter or a model in a control device, even when characteristics of the motor or the apparatus have changed. For this reason, the apparatus control system is provided with a motor for driving an apparatus, a motor control device which holds a calculation model of the motor and generates a control command of the motor on the basis of the calculation model, and a calculation device which updates the calculation model of the motor which is held by the motor control device. The calculation device is provided with an estimation unit which estimates an actual state of the motor or the apparatus on the basis of state information on the apparatus, and an update unit which updates the calculation model held by the motor control device on the basis of the estimation result form the estimation unit.