液压助力转向系统的设计2分析解析

电控液压助力转向系统的设计研究

【摘要】: 本论文主要阐述了现代工程车辆技术追求高效节能、高舒适性和高

安全性等目标。前一项目标与环境保护密切相关,是当代全球性热门话题,后两项目标是车辆朝着高性能化方向发展必须研究和解决的重要课题。转向系统的高性能化是指其能够根据车辆的运行状况和驾驶员的要求实行多目标控制,以获得良

好的转向轻便性、较好的路感和较快的响应性。汽车转向系统是影响汽车操纵稳定性、行驶安全性和驾驶舒适性的关键部分。在追求高效节能、高舒适性和高安全性的今天,电控液压助力转向系统作为一种新的汽车动力转向系统,以其节能、环保、更佳的操纵特性和转向路感,成为动力转向技术研究的焦点。本文通过对电液动力转向系统的组成结构进行了分析,解释了其工作原理。在分析了全液压转向系统的工作原理和液压转向器的结构后,建立了液压转向器的流体动力模型、数学模型。接着利用所建的数学模型对电控液压助力转向系统组成各元件进行特性分析,了解了影响系统性能的一些参数。并通过系统仿真,分析其性能是否满足实际工作中的要求。为了实现系统的转向性能,进行了系统的软硬件设计。最后根据电液动力转向系统结构原理图,搭建了相应的试验装置,同时通过检测系统,完

成了性能的检测。本文的研究为电液动力转向系统的设计和性能改善提供了一定的依据。通过系统元件的参数对于系统性能的影响分析有助于我们设计系统时选择更合理的参数;通过仿真分析了所建系统模型的性能,加入了PID控制算法调节,表明所设计的系统能够满足实际转向的要求。

关键词：：液压转向；助力器；压力；流量；功率

Abstract: This thesis mainly elaborated the modern engineering vehicles pursuit of high efficiency and energy saving, high technology comfort and high security objectives etc. Former a target and environmental protection, is closely related to the contemporary global hot topic, after two objectives are vehicles performance-based direction toward a high development must study and solve important issue. Steering system of high performance is to show its can according to the operation status of vehicles and drivers for the control of multi-objective to obtain good steering portability, better lk feeling and quicker response sex. Automotive steering system is to influence the vehicle steering stability, driving safety and driving comfort key part. In the pursuit of high efficiency and energy saving, high comfort and high security today, electronically controlled hydraulic steering system as a new car power steering system,

with its energy-saving, environmental protection, better handling characteristics and steering lk feeling, become the focus of power steering technology research. This article through to electrohydraulic power steering system composition structure are analyzed, explains its working principle. On the analysis of the hydraulic steering system of hydraulic steering the working principle and the structure of the established hydraulic steering gear, the hydrodynamic model, the mathematical model. Then use the model of electronically controlled hydraulic steering system composition for each element analysis, understand the characteristics of some parameters affect system performance. And through the system simulation, analyzes its performance meets the requirements of the actual work. In order to realize the system to performance, the system hardware and software design. Finally, according to the electrohydraulic power steering system structure diagram, built the corresponding test device, and at the same time through testing system, completed the performance testing. This research for electrohydraulic power steering system design and performance improvement provides certain basis. Through the system components for the parameters of the system performance impact analysis helps us to the design of the system more reasonable parameters selection; Through the simulation analysis of the performance of the system model is built, joined the PID control algorithm adjustment, showed that the designed system can meet the practical steering requirements.

Key words:Hydraulic steering; Booster; Pressure; Flow; power