Rotation Drive Control Apparatus Abnormal Portion Extraction
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Solution Overview
Problem
Existing systems for identifying operation abnormalities in drive mechanisms, such as those in image forming apparatuses, face challenges in promptly detecting and isolating the specific faulty components, leading to increased repair times and user inconvenience.
Innovation Solution
A rotation drive control apparatus with a motor, control section, and detecting members that utilize detection patterns to identify abnormal portions by monitoring the rotation reference and shift positions of a rotation member, allowing for prompt extraction and recovery of faulty components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional detection components are added to identify abnormal portions, then measurement precision and reliability improve, but device complexity and manufacturing cost increase
Solution Approach 1:
The existing rotation state detection means is made to serve dual purposes: normal operation control and abnormality detection. By analyzing the detection results in different operational contexts (normal vs. abnormal states), the system can identify specific abnormal portions without requiring separate detection components.
Solution Approach 2:
The invention creates a diagnostic mode that replicates normal operation conditions but monitors the system's response to identify abnormalities. By comparing expected detection patterns with actual detection patterns during controlled operations, the system can pinpoint faulty components using existing sensors.
2Reliability
If comprehensive abnormality detection is implemented, then reliability improves, but ease of repair deteriorates due to increased difficulty in identifying specific failure portions
Solution Approach 1:
The detection system is segmented to identify specific abnormal portions (motor, drive circuit, rotation mechanism, detection means) by analyzing which detection means fails to detect expected states. This segmentation allows maintenance personnel to quickly locate the exact faulty component rather than performing comprehensive checks of all parts.
Solution Approach 2:
Instead of directly detecting abnormalities in each component, the system inverts the approach by detecting the absence of expected normal states. When a detection means does not detect a state that should be present during normal operation, this negative detection pattern indicates the location of the abnormality.
3Device complexity
If simple detection methods are used, then device complexity is reduced, but measurement precision of abnormal portions deteriorates
Solution Approach 1:
The system dynamically analyzes detection patterns based on the operational state. By evaluating which detection means fail to detect expected states during controlled rotation operations, the system achieves precise abnormal portion localization without requiring complex static detection hardware for each component.
Data Source
AI summary
A rotation drive control apparatus includes a first mode for counting a detection value of a second detecting member to control a shift amount of a rotation member, based on a detection value of a first detecting member obtained in controlling and rotating a motor, and a second mode for extracting at least one abnormal portion among the motor, control section, mechanism section, and detecting section, based on detection patterns of combinations of a state in which the first detecting member detects a rotation reference position within a predetermined time, or a state in which the first detecting member does not detect the rotation reference position within the predetermined time, and a state in which the second detecting member detects a rotation shift position within a predetermined time, or a state in which the second detecting member does not detect the rotation shift position within the predetermined time.