Actuator Voltage-Drop Control to Suppress Battery-Related Noise
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Solution Overview
Problem
Actuator control devices face challenges in suppressing abnormal noise generated by actuators, particularly due to voltage drops caused by battery deterioration, which existing technologies fail to address effectively.
Innovation Solution
An actuator control device with a detection unit that monitors battery voltage and imposes stronger restrictions on actuator operation based on descent time thresholds, distinguishing between temporary and permanent voltage drops to prevent abnormal noise and protect the battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the actuator operates without voltage monitoring, then the actuator can function continuously, but abnormal noise is generated due to voltage drops from battery deterioration
Solution Approach 1:
The control device performs preliminary voltage monitoring and descent time calculation before abnormal noise occurs. By detecting voltage drops and calculating descent times in advance, the system can predict battery deterioration and take preventive measures, avoiding the generation of abnormal noise before it happens.
Solution Approach 2:
The control device continuously monitors battery voltage and provides feedback on the descent time. This feedback mechanism allows the system to adjust actuator operation based on real-time voltage conditions, preventing abnormal noise generation while maintaining simple control logic through standardized feedback thresholds.
2Object-affected harmful factors
If the actuator operation is restricted when voltage drops occur, then abnormal noise is suppressed, but the actuator productivity decreases
Solution Approach 1:
The control device dynamically adjusts actuator operation restrictions based on the calculated descent time. Rather than applying fixed restrictions, the system adapts the level of restriction according to the rate of voltage decline, allowing full operation when voltage is stable and applying restrictions only when deterioration is detected, thus maintaining productivity while suppressing abnormal noise.
Solution Approach 2:
The control device changes operational parameters based on voltage conditions. By monitoring voltage drop magnitude and calculating descent time, the system adjusts actuator operation parameters dynamically, restricting operation only when necessary to prevent abnormal noise while maintaining normal productivity during stable voltage conditions.
3Reliability
If the descent time threshold is set low, then the battery is protected more aggressively, but unnecessary restrictions are imposed during temporary voltage drops
Solution Approach 1:
The control device calculates descent time in advance by monitoring voltage changes over time. This preliminary calculation allows the system to distinguish between temporary voltage drops (where descent time exceeds the threshold) and genuine battery deterioration (where descent time is below the threshold), preventing unnecessary restrictions while maintaining reliable battery protection.
Solution Approach 2:
The descent time calculation acts as an intermediary parameter between voltage monitoring and operation restriction decisions. Rather than directly restricting operation based on voltage level alone, the system uses descent time as an intermediate metric to filter out temporary fluctuations, ensuring that restrictions are imposed only when genuinely necessary while maintaining actuator availability during transient conditions.
4Reliability
If the control device monitors voltage continuously, then battery deterioration is detected early, but energy consumption increases
Solution Approach 1:
The control device performs voltage monitoring and descent time calculation at periodic intervals rather than continuously. By sampling voltage at regular intervals and calculating descent time based on these periodic measurements, the system achieves reliable detection of battery deterioration while significantly reducing energy consumption compared to continuous monitoring.
Data Source
AI summary
An actuator control device configured to control an operation of an actuator includes: a detection unit and a restriction unit. The detection unit is configured to monitor a battery voltage and to detect a descent time which is a drop time of the battery voltage from a preset first voltage to a second voltage lower than the first voltage. The restriction unit imposes, when the descent time is equal to or longer than a time threshold, a stronger restriction on an operation of the actuator than an occasion of when the descent time is less than the time threshold.