摘要
基于流体力学理论和理想气体状态方程,建立油气悬架主要部件的模型,包括节流阀模型、溢流阀模型、蓄能器模型、油缸模型。根据系统中各部件的连通关系,建立多支路油气悬架整数阶模型。引入分数阶理论,建立多支路油气悬架分数阶模型,并将分数阶模型、整数阶模型与台架试验对比,验证了分数阶模型的正确性。通过改变分数阶阶次,观察系统阻尼力的变化规律,证明了分数阶模型在研究刚度及阻尼非一致性问题时的优势,为后续的多支路油气悬架阻尼非一致性问题的研究奠定了基础。
The models had been built for major components of a hydropneumatic suspension system based on knowledge of bydromechanics and tile equation of state fbr an ideal gas. According to the connection of components, the integer order model of multi-branch hydropneumatic suspension was built and then the fractional order model was built based on the fractional order theory. The feasibility and advantages of the fi-actional order theory were verified through the comparison of the bench tests on both models. The influence of change in fractional operators on the system characteristics was analyzed for the subsequent research on damping non-coincidence in nmlti-branch hydropneumatic suspension.
出处
《汽车工程学报》
2015年第6期408-414,共7页
Chinese Journal of Automotive Engineering
基金
国家自然科学基金(51205021)
关键词
分数阶
多支路
油气悬架
模型
阶次影响
fractional order
multi-branch
hydropneumatic suspension
model
fi＇actional influence
