一种空气弹簧动态特性分析方法
By constructing a dual time-domain and frequency-domain model of the air spring, combined with a friction model and linearization processing, the problem of insufficient accuracy in calculating the low-frequency dynamic characteristics of the air spring is solved, achieving high-precision dynamic characteristic analysis, which is applicable to the design of automotive suspension systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG MEICHEN ADVANCED POLYMER MATERIALS TECH CO LTD
- Filing Date
- 2026-05-25
- Publication Date
- 2026-07-17
AI Technical Summary
The mathematical model for the dynamic characteristics of air springs across the entire frequency range in the existing technology has insufficient calculation accuracy in the low-frequency range of 0-1 Hz, which makes it difficult to meet the design requirements of automotive suspension systems.
A dual time-domain and frequency-domain model of an air spring is constructed. The relationship between effective area and volume changes is identified through a quasi-static test method. Friction force is fitted by a friction model, and a differential equation for air pressure change is established. The equation is then linearized using a first-order Taylor expansion method. Finally, the complex dynamic stiffness of the air pressure and friction force elements is superimposed to form a complete dynamic characteristic analysis method.
It achieves accurate calculation of dynamic characteristics in the 0-1 Hz low-frequency band, meets the design requirements of automotive suspension systems, improves calculation accuracy, and is applicable to the suspension system design of commercial vehicles and new energy passenger vehicles.
Smart Images
Figure CN122263549B_ABST