Semi-Active Anti-Yaw Damper With Real-Time Damping Control
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Solution Overview
Problem
Traditional anti-yaw dampers in train suspensions are passive and cannot adjust performance parameters in real time, making them incompatible with diverse operational demands and difficult to extend repair cycles while maintaining optimal suspension performance.
Innovation Solution
A semi-active anti-yaw damper with adjustable solenoid valves and a controller that adjusts damping coefficients based on real-time operational data, allowing for semi-active and passive modes, ensuring optimal performance and compatibility with varying conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional passive anti-yaw damper is used, then the structure is simple and reliable, but the performance parameters cannot be adjusted in real time to match different running conditions
Solution Approach 1:
The patent applies the dynamics principle by transforming the traditional passive damper into a semi-active damper with adjustable damping coefficients. The control system dynamically adjusts the damping parameters based on real-time operating conditions (wheel taper, speed, acceleration), allowing the damper to adapt its performance characteristics rather than remaining fixed. This resolves the contradiction by enabling performance adjustment without requiring complete structural redesign.
Solution Approach 2:
The patent implements parameter changes by modifying the damping coefficient values based on different operating scenarios. The control system calculates optimal damping parameters according to wheel taper degree, train speed, and acceleration conditions, then adjusts the damper performance accordingly. This allows the same physical structure to deliver different performance characteristics through parameter adjustment rather than structural change.
2Duration of action of moving object
If the damping parameters are fixed in a traditional passive damper, then the manufacturing and maintenance are simple, but it is difficult to extend the repair cycle and reduce operating costs
Solution Approach 1:
The semi-active control system enables dynamic adaptation of damping parameters throughout the damper's service life. As wheels wear and taper increases, the system automatically adjusts parameters to maintain optimal performance, extending the useful life of the damper beyond what would be possible with fixed parameters. This dynamic capability directly extends the repair cycle while the added complexity is managed through electronic control rather than mechanical redesign.
3Adaptability or versatility
If a traditional passive damper with fixed performance parameters is used, then the device is simple and reliable, but it cannot be compatible with the diversified needs of different lines and regions
Solution Approach 1:
The patent achieves universality by designing a semi-active damper system that can serve multiple lines and regions with different requirements through parameter adjustment rather than hardware modification. The control system accommodates various operating conditions (different speeds, accelerations, wheel tapers) by calculating and applying appropriate damping parameters, making a single damper design compatible with diverse operational needs across different railways and regions.
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 semi-active damper maintains optimal suspension performance by adjusting parameters in real time, enhancing compatibility with different environments and extending repair cycles, thus reducing operating costs and prolonging vehicle service life.
Implementation Method 1
each branch of the at least two parallel branches comprises a one-way throttle valve and the adjustable solenoid valve connected in series
Implementation Method 2
the emergency oil line is provided with a non-adjustable solenoid switch valve, and the non-adjustable solenoid switch valve is configured to enable the emergency oil line when the damper is in a passive mode
Implementation Method 3
the piston reciprocates inside the hydraulic cylinder so that an oil pressure difference is generated between the two cylinder blocks in the hydraulic cylinder
Implementation Method 4
each branch of the at least two parallel branches comprises a one-way throttle valve and the adjustable solenoid valve connected in series
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A semi-active anti-yaw damper (100), a damping system and a vehicle are provided. When a piston (2) of the semi-active anti-yaw damper (100) reciprocates in the hydraulic cylinder (1), an interior of the hydraulic cylinder (1) is divided into two cylinder blocks (PA, PB). The semi-active anti-yaw damper (100) includes at least two parallel branches (B1, B2), the two ends of each of the parallel branches (B1, B2) are connected to the two cylinder blocks (PA, PB), respectively, and each of the parallel branches (B1, B2) is provided with an adjustable solenoid valve (PV), and the adjustable solenoid valve (PV) is configured to adjust a damping coefficient of the semi-active anti-yaw damper (100) when the semi-active anti-yaw damper (100) is in a semi-active mode.