关 键 词：

机械毕业设计全套

资源描述：

CLJD01-014@基于单片机的电动转向助力系统的设计与实现,机械毕业设计全套

内容简介：

黑龙江工程学院本科生毕业设计 I 摘 要 汽车电动助力转向系统 (EPS Electric Powered Steering)是 近年来发展起来的一种新型转向系统，该系统是由电子控制单元根据传感器采集到的信号来控制 助力 电机的运转，从而实现助力转向的功能， EPS除了具备液压动力转向器的转向轻便等优点之外，它还具有转向平稳、节 能 、环保等一系列特点，因此， EPS取代液压动力转向系统势在必然。当前国内在 EPS的研究和产业化方面还比较落后，没有形成具有自主知识产权的 EPS产品。因此，开展对 EPS的研发上作具有重要的理论和实际意义。 本文在分析 、 总结 现有 电动助力转向系统基础上，以提高系统运行可靠性与达到更好的助力效果为目标，开发了以 STC89C52为微处理器的 EPS控制器。 硬件上结合单片机的资源，对电路进行了 设计 ，包括外围电路以及 单片机最小 系统的改进 。 软件上并结合硬件电路，设计了相应的程序，提高了整个系统运行可靠性。 最后 ,总结论文工作中涉及的一些问题 ,并给出对未来进行了讨论 ,形成了未来的研究方向和工作目标 。 关键词： 汽车 ； 电动助力转向 ； 单片机 nts黑龙江工程学院本科生毕业设计 II ABSTRACT Electric power steering system(EPS) is a new developing direction of Power steering system in automotive The principle of EPS is the assistant motor works according to the measured torque and vehicle signals So that Dower steering can be realized Besides EPS has the light steering torque like Hydraulic Power Steering (HPS)system， it has many other characteristics such as steering placidly， low energy consuming， environment protecting and so on Therefore it is a certain tendency that EPS being instead of HPS， But at present the R&D of the domestic EPS is behindhand and a11 the EPS used in vehicles has no independent knowledge property right Therefore it is very important in academic and practical significance in R&D of EPS On basis of summary， analysis of the system， a EPS controller based on STC89C52 Was developed in order to improve the reliability and performance of system With MCU hardware combined resources to circuit design, including peripheral circuit and single chip minimize system improvement. Software and hardware circuit, design with the corresponding program and improve the operation of the system reliability. Finally， a summary of works involved in the thesis is given and some problems for the future are discussed， which forms the ob