Vehicle Control Unit for Steer-by-Wire Startup Delay Alerts
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Solution Overview
Problem
When the preparation process for a steer-by-wire steering device is hindered, the period until normal control of the steering device during vehicle travel becomes prolonged, causing driver anxiety due to uncertainty about the reason for the delay.
Innovation Solution
A vehicle control unit and method that transitions to a start-up state after the power source is started, allowing a preparation process to be executed by automatically controlling the operation member, and includes a forced-ending condition determination, forced-ending process, and notification process to inform the driver when the preparation process is forcibly ended.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the preparation process is executed automatically in the start-up state, then the steering device can be controlled during vehicle travel, but the period until normal control becomes possible is prolonged when the process is hindered
Solution Approach 1:
The system performs preliminary actions by automatically executing the preparation process during the start-up state before normal vehicle operation begins. This ensures that the steering device is properly initialized and ready for control during vehicle travel, preventing delays that would occur if the process were delayed until after startup.
Solution Approach 2:
The system implements feedback by notifying the driver when the preparation process is hindered and cannot be completed. This feedback mechanism provides transparency about the system status, allowing the driver to understand why normal control is delayed and take appropriate actions if needed.
2Reliability
If the preparation process is hindered, then the period until normal control becomes possible is prolonged, but the driver experiences anxiety due to uncertainty about the reason
Solution Approach 1:
The notification device provides continuous feedback to the driver about the status of the preparation process. When the process is hindered, the system immediately notifies the driver of the specific reason for the delay, eliminating uncertainty and allowing the driver to make informed decisions about vehicle operation.
Solution Approach 2:
The notification device acts as an intermediary between the control system and the driver, translating complex system states into understandable information. This intermediary communicates the reasons for delays in preparation process completion, bridging the information gap that would otherwise cause driver anxiety.
Data Source
AI summary
A vehicle control unit includes a controller configured to make a state transition to a normal control state via a start-up state after a power source system of a vehicle is started. The start-up state is a state where it is possible to execute a preparation process, required for making a state transition to the normal control state, by controlling an operation member so as to move automatically. The controller is configured to execute, in the start-up state: a forced-ending condition determination process of determining whether a forced-ending condition showing that the preparation process being executed is to be forcedly ended from start of execution of the preparation process is met; a forced-ending process of forcedly ending the preparation process being executed when the forced-ending condition is met; and a notification process of notifying the driver of forced ending of the preparation process.