Wire-Assisted Active Suspension for Faster Wheel Positioning
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Solution Overview
Problem
Existing active suspension systems in vehicles require a large amount of force and time to operate, leading to reduced responsiveness due to the need for high-performance motors and slow wheel position changes relative to the vehicle body.
Innovation Solution
A mobility system that assists the active suspension system using a wire-based suspension assistant unit, which includes a wire member, elastic module, and tension adjustment mechanism, allowing for motor-less operation and faster wheel position adjustments without compromising ride quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an active suspension system is equipped with a motor to change wheel position, then the suspension can respond to road conditions, but a large amount of force is required and high-performance motors are needed
Solution Approach 1:
A wire member is introduced as an intermediary mechanical element to transmit force from the suspension module to the wheel assembly. This wire-based mechanism acts as a mediator that converts rotational motion into linear pulling force, reducing the direct force requirements on the motor while maintaining effective suspension control
Solution Approach 2:
The patent replaces a direct motor-to-wheel mechanical connection with a wire-based suspension assistant unit. This substitution allows the motor to operate at lower force levels while the wire mechanism provides mechanical advantage to achieve the required wheel position changes
2Reliability
If an active suspension system uses a motor to change wheel position, then suspension control is achieved, but a lot of time is required to change position which causes deterioration in responsiveness
Solution Approach 1:
The wire member is configured to wrap around a pulley, enabling rapid back-and-forth motion during wheel position adjustments. This periodic wrapping and unwrapping action allows the suspension system to quickly respond to road conditions by rapidly changing wheel position in response to detected variations
Solution Approach 2:
The wire-based assistant unit with pulley mechanism replaces slow direct motor-driven position changes with a faster cable-pulley system. This mechanical substitution enables quicker transmission of motion from the motor to the wheel assembly, significantly reducing the time required for position changes
3Reliability
If a separate motor is mounted in the active suspension system, then wheel position can be changed, but the device complexity increases
Solution Approach 1:
The suspension assistant unit is integrated with the existing suspension module, combining the motor, wire member, and pulley into a single compact assembly. This merging of components reduces overall system complexity compared to having separate motor and suspension systems, while maintaining full wheel position adjustment capability
Solution Approach 2:
The wire member serves multiple functions: it transmits force from the motor, provides mechanical advantage through the pulley, and enables bidirectional wheel position adjustment. This multi-functionality reduces the need for additional components, thereby reducing overall device complexity while maintaining suspension control
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 the required motor performance and shortens the time needed to operate the suspension system, enhancing responsiveness and ride quality by providing auxiliary power assistance to the suspension module.
Implementation Method 1
an elastic module having one side fixedly coupled to the support member
Implementation Method 2
a wire member configured to pull the suspension module and having one side coupled to the suspension module
Data Source
AI summary
An embodiment mobility includes a frame unit, a traveling drive unit disposed at a front or rear side of the frame unit and including a traveling wheel and a suspension module configured to change a position of the traveling wheel relative to the frame unit, and a suspension assistant unit having a first side coupled to the frame unit and a second side coupled to the suspension module, the suspension assistant unit including a wire member configured to pull the suspension module and having a first side coupled to the suspension module.