Levitation Vehicle Suspension with Active Control
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Solution Overview
Problem
Passive levitation vehicles are limited by their suspension systems, which fail to meet comfort and grip requirements, leading to restricted maximum speed due to vibrations and forces that cannot be adequately managed by conventional passive systems.
Innovation Solution
A suspension system for passive levitation vehicles featuring a kinematic structure with a passive elastic element and a controlled-dynamic element, connected in parallel, equipped with sensors and electronic feedback control to adjust the levitation force dynamically, utilizing variable-stiffness springs or magnetorheological dampers to enhance damping and control, allowing for improved vibration reduction and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a passive suspension system is used in passive levitation vehicles, then the system structure is simple and reliable, but the maximum speed is limited due to inadequate vibration control and poor grip performance
Solution Approach 1:
The patent applies the dynamics principle by transforming the static passive suspension system into a dynamic controlled system. The suspension incorporates active actuators that can dynamically adjust suspension forces in real-time based on vehicle motion states, allowing the system to adapt to varying speeds and track conditions. This enables the vehicle to operate at higher speeds while maintaining comfort and grip, resolving the contradiction between speed improvement and system complexity.
Solution Approach 2:
The patent implements feedback control by incorporating sensors that continuously monitor suspension displacement, velocity, and acceleration, along with track profile information. This feedback is processed by a control unit that adjusts actuator forces to optimize suspension performance. The feedback mechanism enables active vibration control and grip management at higher speeds, overcoming the limitations of passive systems while managing complexity through intelligent control algorithms.
2Object-affected harmful factors
If conventional passive suspension elements are used, then the system is simple to manufacture and maintain, but vibrations and forces cannot be adequately controlled, leading to poor passenger comfort
Solution Approach 1:
The patent replaces conventional passive mechanical suspension elements with active electromechanical actuators. These actuators use electromagnetic or electrohydraulic mechanisms to generate controlled forces, substituting simple mechanical springs and dampers with electronically controlled systems. This substitution enables precise vibration and force control for improved passenger comfort, while the electronic control systems manage the increased complexity through programmable algorithms.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting suspension system parameters such as stiffness and damping coefficients through active actuators. The control system modifies these parameters in real-time based on vehicle motion, track conditions, and comfort requirements. This ability to change parameters dynamically allows effective vibration and force control at various operating conditions, resolving the contradiction between comfort improvement and system complexity.
3Reliability
If the suspension system is designed for high performance vibration control, then passenger comfort and safety are improved, but the system complexity and cost increase
Solution Approach 1:
The patent applies segmentation by dividing the suspension system into independent control zones or modules, each with its own actuators and control algorithms. This modular approach allows high-performance vibration control in critical areas while simplifying less critical sections. The segmented architecture improves reliability through localized control and failsafe mechanisms, while managing overall system complexity through modular design that can be implemented progressively.
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
The solution enables higher performance and increased maximum speed limits while ensuring passenger comfort and safety by actively controlling vibrations and forces, overcoming the limitations of traditional passive suspension systems.
Implementation Method 1
a passive elastic element connected between the skid and the compartment
Implementation Method 2
utilizing variable-stiffness springs or magnetorheological dampers to enhance damping and control
Data Source
AI summary
The performance of a passive-levitation vehicle is improved for moving over a path. The vehicle has a levitation skid slidable on the path and capable of developing a levitation force to support a compartment at a certain distance from the path. A suspension between the compartment and the skid, comprises a kinematic structure to confer degrees of freedom and relative constraints between the skid and compartment; a passive elastic element connected between the skid and the compartment; and a controlled-dynamic element able to exert a force having controlled dynamics between the skid and compartment; the passive elastic element and controlled-dynamic element mounted in parallel to each other and connected to the skid and compartment. sensor detects the distance between the skid and the path. An electronic circuit, connected to the sensor and to the controlled-dynamics element, carries out a feedback control to adjust this distance.