Vehicle Steering Angle Sensor Reset and Switching
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Solution Overview
Problem
When an abnormality occurs in the input steering angle sensor during autonomous driving, the angle overlay operation is immediately stopped, making it difficult for the driver to manually control the vehicle, as they may not be holding the steering wheel or be attentive due to the expectation of autonomous control.
Innovation Solution
A vehicle control apparatus and method that includes a reception unit for receiving a target steering angle, a resetting unit to reset the input steering angle sensor when an abnormality occurs, and a control unit to maintain the angle overlay operation by switching to alternative sensors such as the motor position sensor or external angle sensor, ensuring continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the angle overlay operation is immediately stopped when an abnormality occurs in the input steering angle sensor, then the system maintains high reliability by preventing erroneous operation, but the ease of operation deteriorates because the driver must manually control steering while possibly not holding the steering wheel or being attentive
Solution Approach 1:
The system performs preliminary actions by resetting the input steering angle sensor and switching to alternative sensors (motor position sensor or external angle sensor) before the abnormality completely disrupts operation. This cushioning measure ensures continuous angle overlay operation even when sensor abnormalities occur, preventing the need for immediate manual intervention.
Solution Approach 2:
The control apparatus introduces intermediary solutions by using alternative sensors (motor position sensor or external angle sensor) as mediators when the primary input steering angle sensor fails. These intermediaries maintain the angle overlay operation continuity, bridging the gap between sensor failure and complete system shutdown.
2Device complexity
If the system uses a single input steering angle sensor for angle overlay operation, then the device complexity is reduced, but the reliability deteriorates when the sensor experiences abnormalities during autonomous driving
Solution Approach 1:
The control apparatus implements multi-functionality by enabling different sensors (input steering angle sensor, motor position sensor, external angle sensor) to perform the same function of providing steering angle information. This universal approach ensures that if one sensor fails, another can take over, maintaining operation continuity without significantly increasing system complexity.
Solution Approach 2:
The system prepares alternative sensor configurations in advance through the resetting unit, which can switch to motor position sensor or external angle sensor data before the primary sensor failure completely impacts operation. This preliminary preparation maintains reliability while avoiding the need for complex real-time decision-making during sensor failures.
3Reliability
If the resetting unit resets the input steering angle sensor when abnormality occurs, then the angle overlay operation can be maintained, but the device complexity increases due to additional resetting and sensor switching mechanisms
Solution Approach 1:
The control apparatus implements dynamic sensor selection, where the system can switch between different sensor sources (input steering angle sensor, motor position sensor, external angle sensor) based on real-time operational needs and sensor status. This dynamic approach maintains operation continuity while managing complexity through adaptive rather than static sensor configuration.
Data Source
AI summary
Provided are a vehicle control apparatus and method. A vehicle control apparatus for controlling an angle overlay operation of a vehicle includes a reception unit configured to receive a target steering angle from a target steering angle transmission apparatus, a resetting unit configured to reset an input steering angle sensor when an abnormality has occurred in the input steering angle sensor, and a control unit configured to control the angle overlay operation based on the target steering angle, whether an abnormality has occurred in the input steering angle sensor, and a steering angle received from the input steering angle sensor.