Roll Motor Control Using Stored Output Correction
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Solution Overview
Problem
Medium feeding apparatuses face challenges in maintaining appropriate operation of the roll driving portion after a stop period, where output values change, requiring re-measurement, which is time-consuming and inefficient.
Innovation Solution
Incorporating a storage portion to store output measured values and a roll control portion that corrects these values based on stop time, rotation speed, weight, and temperature changes, allowing for continued appropriate operation without re-measuring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If output measured values are stored and used after a stop period, then operation continuity is improved, but measurement precision deteriorates because the values become outdated and inaccurate
Solution Approach 1:
The system performs preliminary correction of output measured values based on stop time before using them after a stop period. The roll control portion calculates correction values in advance based on the duration of the stop, thereby preparing accurate control parameters without requiring re-measurement after the stop, thus maintaining both operation continuity and measurement precision
Solution Approach 2:
The system changes the parameters of the stored output measured values by applying correction values that are calculated based on stop time. This parameter transformation allows the outdated measured values to be adjusted to reflect current conditions, resolving the accuracy issue while maintaining the benefit of stored values
2Measurement precision
If re-measurement of output values is performed after stop period, then measurement precision is improved, but loss of time increases due to the time required for re-measurement
Solution Approach 1:
Instead of performing re-measurement after the stop period, the system performs preliminary correction of the stored measured values based on stop time. This eliminates the time-consuming re-measurement process while still providing accurate control parameters through computational correction
3Adaptability or versatility
If correction values are updated based on stop time, rotation speed, weight, and temperature, then adaptability is improved, but device complexity increases due to multiple correction parameters
Solution Approach 1:
The system changes multiple parameters (stop time, rotation speed, weight, temperature) to calculate comprehensive correction values. By updating these parameters and their corresponding correction values, the system achieves high adaptability to different operating conditions while managing complexity through a systematic parameter-based approach
Data Source
AI summary
A medium feeding apparatus includes a roll motor which applies torque for rotating a roll body to the roll body, a storage portion which stores output measured value, which is measurement result of output value to the roll motor for rotating the roll body, and a roll control portion which corrects the output measured values stored in the storage portion to correction value in accordance with stop time of the roll motor, and controls the roll motor based on the corrected output measured values.