Electric Steering Control Switch for Dynamic Force Adjustment
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Solution Overview
Problem
Existing electrically-powered steering systems for vehicles are limited in their ability to dynamically adjust steering force based on driver demand and vehicle state, as they are typically restricted to a predetermined number of steering modes that do not adapt to individual driving conditions.
Innovation Solution
A system and method for controlling an electrically-powered steering apparatus that includes a selection switch for choosing between multiple steering modes, a control switch to adjust current for steering force, and a control portion to transmit signals for real-time control of the steering force, allowing users to select from standard, comfort, and sports modes, with change and return switches to modify and revert the steering force as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a predetermined number of steering modes are provided based on assumed driving conditions, then the steering system can cover general driving scenarios, but the steering force cannot be dynamically adjusted to match actual driver demand and vehicle state
Solution Approach 1:
The patent applies dynamics by enabling real-time adjustment of steering force through a control switch that modifies the current supplied to the motor. The system transitions from static predetermined modes to dynamic continuous adjustment, allowing the steering force to adapt to actual driving conditions and driver preferences during operation
Solution Approach 2:
The patent implements parameter changes by varying the current supplied to the motor based on control switch signals. The control portion adjusts electrical parameters (current magnitude) in response to driver input, thereby changing the mechanical output (steering force) to match driver demand and vehicle state
2Reliability
If the steering force is controlled according to vehicle speed with predetermined modes, then the steering system provides standardized assistance levels, but it cannot satisfy individual driver preferences and varying driving conditions
Solution Approach 1:
The patent applies universality by designing a control switch that can generate multiple different control signals for current adjustment. This single control mechanism serves multiple functions: maintaining speed-based assistance, allowing driver preference adjustment, and adapting to varying driving conditions, thereby providing universal adaptability across different scenarios
3Device complexity
If only a specific number of steering modes are predetermined in the vehicle, then the control system remains simple, but the steering force cannot be changed variously according to actual driving conditions and driver demand
Solution Approach 1:
The patent implements parameter changes by using a control switch that generates variable control signals to adjust the current supplied to the motor. This approach maintains relative system simplicity while enabling continuous adjustment of steering force parameters, avoiding the need for complex multiple predetermined modes
Data Source
AI summary
A system and a method for controlling an electrically-powered steering apparatus of a vehicle may include a selection switch adapted to select any of a plurality of steering modes, a control switch adapted to change a current for controlling the steering force, a control portion adapted to determine the current according to a signal received from at least one of the selection switch and the control switch and to transmit a control signal according to the determined current, and a drive portion adapted to control the steering force according to the control signal received from the control portion.