Actuator Control Using Speed Reducer Wear Feedback
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Solution Overview
Problem
Actuators face challenges in maintaining high control accuracy due to secular changes in speed reducer characteristics, which often go unrem measured in actual usage environments, leading to reduced control sensitivity and accuracy.
Innovation Solution
Incorporating a sensor to detect the abrasion state of the speed reducer and a correction unit that updates control parameters based on this information, allowing for continuous high-accuracy control without the need for frequent recalibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If control parameters are set based on initial speed reducer characteristics, then control accuracy is high at the beginning, but control accuracy deteriorates due to secular changes in speed reducer characteristics
Solution Approach 1:
The patent implements feedback by using a sensor to continuously detect information about the speed reducer's abrasion state and feeding this information back to a correction unit. The correction unit then adjusts control parameters based on the detected changes, forming a closed-loop system that maintains control accuracy despite secular changes in speed reducer characteristics.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting control parameters based on the detected abrasion state of the speed reducer. The correction unit modifies control parameters in response to changes in speed reducer characteristics, allowing the control system to adapt to aging and wear over time while maintaining high control accuracy.
2Device complexity
If control parameters are not updated, then device complexity is low, but control sensitivity and accuracy are reduced due to unmeasured secular changes
Solution Approach 1:
The patent implements self-service by enabling the control system to automatically monitor and adjust its own parameters. The sensor detects changes in the speed reducer's state, and the correction unit autonomously updates control parameters without requiring external intervention or complex recalibration procedures, thereby maintaining control sensitivity with minimal added complexity.
3Measurement precision
If frequent recalibration is performed, then control accuracy is maintained, but productivity is reduced due to time loss
Solution Approach 1:
The patent ensures continuity of useful action by implementing continuous monitoring of the speed reducer's abrasion state through the sensor. This allows for real-time detection of changes and continuous adjustment of control parameters, eliminating the need for periodic停机 recalibration and maintaining control accuracy without interrupting operations.
Solution Approach 2:
The patent applies preliminary action by proactively detecting changes in speed reducer characteristics before they significantly degrade control accuracy. The sensor continuously monitors the abrasion state, and the correction unit preemptively adjusts control parameters to compensate for wear, preventing accuracy loss rather than correcting it after the fact.
Data Source
AI summary
An actuator includes a speed reducer, a motor, a control unit that controls the motor based on predetermined control parameters, a sensor that is installed in the speed reducer and detects information affected by an abrasion state of the speed reducer, and a correction unit that corrects the control parameters based on the detected information from the sensor.