Industrial Vehicle Wheel Angle Stabilization via EPS Feedback
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Solution Overview
Problem
Existing safety devices for industrial vehicles do not effectively prevent the traveling wheel from warping due to external impacts while the vehicle is in motion, which can lead to accidents.
Innovation Solution
A device equipped with an angle sensor in an actuator to sense the rotational angle of the traveling wheel, a stepping motor control unit, and an EPS system control unit that compensates for changes in the wheel's angle by driving the EPS motor based on the sensor's output, ensuring the wheel remains aligned with the steering wheel direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing safety devices are used that only monitor vehicle operation, then the device complexity remains low, but the reliability of preventing traveling wheel warping is insufficient
Solution Approach 1:
The patent combines the angle sensor, stepping motor control unit, and EPS system control unit into an integrated safety device that monitors and corrects traveling wheel angle. This merging of components resolves the contradiction by achieving high reliability through comprehensive monitoring and active correction, while the integrated design manages device complexity through coordinated control rather than separate independent systems.
Solution Approach 2:
The patent implements a feedback mechanism where the angle sensor continuously monitors the traveling wheel angle and provides input to the control units, which then activate the EPS motor to correct any deviations. This feedback loop significantly improves reliability by enabling real-time detection and correction of wheel warping, while the automated feedback process manages complexity through algorithmic control rather than mechanical complexity.
2Reliability
If an angle sensor and EPS motor control system are added to compensate for wheel angle changes, then the reliability of preventing wheel warping is improved, but the device complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where the system automatically detects angle deviations through the angle sensor and corrects them using the EPS motor without requiring external intervention. The control units autonomously process sensor data and activate corrections, improving reliability through continuous self-monitoring and self-correction. This automation manages complexity by replacing manual monitoring and correction procedures with integrated electronic control.
3Ease of operation
If the steering wheel is stopped during vehicle travel, then the ease of operation is improved, but the traveling wheel may warp due to external impact
Solution Approach 1:
The patent applies preliminary anti-action by having the angle sensor continuously monitor the traveling wheel angle and the control units stand ready to activate the EPS motor before actual warping occurs. When external impacts threaten to warp the wheel, the system preemptively detects angle deviations and activates correction, countering the harmful effect before it can cause accidents. This resolves the contradiction by protecting against external impacts while maintaining steering wheel stability during stopped conditions.
Data Source
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AI summary
The present invention relates to a device for traveling safety in an industrial vehicle that makes it possible to prevent the traveling wheel from warping due to external impact while an industrial vehicle travels, and a method of providing a traveling safety function. The present invention senses rotation of a traveling wheel by inserting an angle sensor in an actuator and fixes the traveling wheel in the normal direction of a steering wheel by compensating the angle of the traveling wheel by the change in angle sensed by the angles sensor when the rotation of the wheel is sensed. Therefore, it is possible prevent the traveling wheel from warping due to external impact that may occur while a vehicle travels.