Electric Steering Warm-Up Control for Low-Temperature Grease Drag
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Solution Overview
Problem
The viscosity resistance of grease in electric steering systems increases in low-temperature environments, leading to a stiff steering feel, noise, and unwanted sounds, degrading the driving experience.
Innovation Solution
An apparatus and method that automatically warm up the electric steering system before use by detecting low temperature conditions and activating the system via a communication transceiver IC and processor, using a selective wake-up method to conserve battery power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the vehicle is stored for a long time in a low-temperature environment, then the grease viscosity resistance increases, but the steering system can be warmed up in advance to reduce viscosity resistance
Solution Approach 1:
The system performs preliminary warming-up action by rotating the steering wheel before the driver enters or starts the vehicle. The processor detects low-temperature conditions and automatically activates the steering system to rotate the steering wheel, warming the grease in advance to prevent high viscosity resistance during actual steering operation.
2Ease of operation
If the steering system is warmed up automatically before vehicle start, then the steering feel and noise are improved, but the battery power consumption increases
Solution Approach 1:
The system dynamically adjusts the warming-up operation based on detected conditions. The processor evaluates temperature, vehicle state, and driver presence to determine whether to activate warming-up, how long to rotate the steering wheel, and at what speed, optimizing energy consumption while ensuring adequate grease warming when needed.
Solution Approach 2:
The warming-up operation is performed periodically or conditionally rather than continuously. The system activates steering wheel rotation only when low-temperature conditions are detected and the vehicle is in a stationary state, avoiding unnecessary energy consumption during normal operating conditions.
3Reliability
If the steering system components are warmed up in low-temperature environment, then the grease viscosity resistance is reduced, but the system complexity increases due to additional control mechanisms
Solution Approach 1:
The existing steering system components are made multi-functional. The steering wheel serves both as the driver interface and as a warming-up mechanism by rotating in place. The communication transceiver and processor are enhanced to detect external operations and temperature conditions, adding warming-up functionality to existing infrastructure rather than requiring entirely new hardware systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents degradation of the steering feel and noise issues by warming up the system in advance, enhancing user experience and reducing battery drain.
Implementation Method 1
a communication transceiver IC detecting an external operation signal while an ignition of a vehicle is off and outputting a wake-up signal through an internal communication network of the vehicle
Implementation Method 2
grease (lubricant) is applied to the electric steering system in order to reduce friction between the gears... viscosity resistance of grease may increase when a vehicle is stored for a long time in a low-temperature environment... automatically perform steering aging before a user enters the vehicle
Data Source
AI summary
An apparatus for controlling an electric steering system includes: a communication transceiver IC detecting an external operation signal while an ignition of a vehicle is off and outputting a wake-up signal through an internal communication network of the vehicle; and a processor, activated by the wake-up signal, controlling the electric steering system to automatically perform steering aging before a user enters the vehicle.