Linear Motor Steering Control Without a Reducer
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Solution Overview
Problem
Conventional steering control devices for vehicles require a reducer, which increases complexity and cost, and do not allow for precise control of steering angle or efficient use of space within the vehicle.
Innovation Solution
A steering control device utilizing a linear motor coupled directly to the wheel, eliminating the need for a reducer and enabling precise control of steering through multiple linear motors per wheel, allowing for a dual structure and efficient use of space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a reducer is used in conventional steering control devices, then the steering mechanism can achieve sufficient steering force, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent removes the reducer component from the steering control device, extracting only the essential linear motor and coupling part components. This elimination of the reducer reduces device complexity and manufacturing cost while maintaining sufficient steering force through direct coupling of the linear motor to the wheel assembly.
Solution Approach 2:
The patent replaces the traditional mechanical reduction gear system with a linear motor-driven system. The linear motor directly generates the force needed for steering without requiring mechanical reduction, substituting a more efficient electromechanical system for the conventional mechanical reducer-based system.
2Force
If a reducer is used in conventional steering control devices, then the steering mechanism can achieve sufficient steering force, but the manufacturing cost increases
Solution Approach 1:
The patent removes the reducer component from the steering control device, extracting only the essential linear motor and coupling part components. This elimination of the reducer reduces device complexity and manufacturing cost while maintaining sufficient steering force through direct coupling of the linear motor to the wheel assembly.
Solution Approach 2:
The patent employs a simpler, more cost-effective linear motor assembly without expensive reducer mechanisms. By using a straightforward linear motor coupled directly to the wheel, the system achieves the required steering force at a lower manufacturing cost compared to traditional reducer-based systems.
3Measurement precision
If multiple linear motors are used per wheel, then precise control of steering angle is achieved, but the number of parts increases
Solution Approach 1:
The patent divides the steering control function into multiple independent linear motors, with each motor contributing to the overall steering control. This segmentation allows for precise control of steering angle through coordinated operation of multiple motors, while each motor remains a relatively simple, modular component that can be independently controlled.
Solution Approach 2:
The patent employs multiple linear motors that can serve both steering control functions and potentially other vehicle control functions. These motors provide multi-functionality, achieving precise steering angle control while their compact design and integration reduce the overall impact on device complexity.
4Reliability
If a reducer is used in conventional steering control devices, then the steering mechanism is robust, but the space required for battery and legroom decreases
Solution Approach 1:
The patent removes the reducer component from the steering control device, extracting only the essential linear motor and coupling part components. This elimination of the reducer reduces device complexity and manufacturing cost while maintaining sufficient steering force through direct coupling of the linear motor to the wheel assembly.
Solution Approach 2:
The patent repositions the linear motor and coupling mechanisms in a more space-efficient configuration, utilizing available space in the vehicle architecture more effectively. By eliminating the bulky reducer and using compact linear motors, the system maintains robust steering functionality while freeing up valuable interior space for batteries and passenger legroom.
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
This solution reduces manufacturing costs, improves steering response, allows for varied steering feel, and secures space for batteries and legroom by eliminating the need for a reducer and enabling precise steering angle control.
Implementation Method 1
a first linear motor LM1 coupled to the coupling part 301, and the first linear motor LM1 includes a first shaft SF1 which is movable
Implementation Method 2
a permanent magnet 600 disposed on the yoke 800
Implementation Method 3
The at least one driving unit may include a coil
Data Source
AI summary
The present disclosure relates to a steering control device capable of controlling steering of a wheel using a linear motor. A steering control device includes a coupling part extending from a wheel and a first linear motor LM1 coupled to the coupling part, and the first linear motor LM1 includes a first shaft SF1 which is movable and a first joint part JT1 having one side rotatably coupled to the first shaft SF1 and another side rotatably coupled to the coupling part.