文档介绍：青岛科技人学研究生学位论文机动车半坡起步辅助系统的研究摘要针对目前手动档机动车半坡起步经常出现的溜车现象,设计一种适用于手动档机动车的半坡起步辅助系统( control assistsystem简称HAS)。该系统是一个机电一体化系统,系统基于汽车原有的防抱死制动系统上开发设计,在原有制动系统上增加力传感器、倾角传感器和起步电磁阀,并更换能检测低速及车轮转向的轮速传感器。对于驾驶员来说操作简单,只需要按一下按钮就可以实现对机动车的坡道辅助起步。本文研究的半坡起步辅助系统能够提高车辆行驶的安全性和驾驶的舒适性。半坡起步辅助系统的关键技术就是系统根据制动部件的支承反力的大小和方向的变化情况自动控制驻车制动力。系统首先通过力传感器得到初始值,然后根据力学平衡方程,确定汽车驻车时系统所需要施加的制动力以及汽车解除制动力时的支承反力临界值。用力传感器检测汽车制动部件的支承反力变化也是本论文的技术创新点。论文中阐述了起步辅助系统的组成及工作原理,根据系统对制动器结构的要求,通过比较选择合适的制动器作为汽车的后轮制动器,并对制动器受力分析, 建立正确的力学模型;考虑到我国对驻车坡度范围的规定,对起步辅助系统施加的驻车制动力进行计算分析,并证明系统实施驻车的安全可行性;对系统硬件和软件设计;利用MATLAB/Simulink建立汽车仿真模型并进行仿真,通过仿真结果,找出系统解除制动力的临界点。最后总结全文工作,对将来的改进方向进行了分析说明。起步辅助系统可以彻底解决手动档机动车坡道起步时的后溜现象,有效地防止溜车产生的隐患,且不影响平地起步。所以说,半坡起步辅助系统的开发具有极其重要的意义。关键词:半坡起步防抱死制动系统电子控制单元MATLAB/Simul ink临界点机动车、r坡起步辅助系统的研究 RESEARCH oF THE HILL—START CoNTRoL ASSIST SYSTEM oN MoToR VEHICLES ABSTRACT For thephenomenon thatthemanual motor vehides often slip backward when starting on the uphill,a hill—startcontrol assistsystem(HAS)on manual motor vehides isdesigned HAS is all system,it developed anddesigned on the basis ofthealready existing automobile Braking Systems(ABS),the force sensor,inclination sensor and valve are added intooriginal brake system,and anew speed sensor formeasuring lOW speed and direction ofrotation easy fordrivers tooperate vehicles,hill-start assistformanual motor vehicles willbeachieved through only pressing can improve safety fort ofdriving. The key technology ofHAS isthatHAS can automatically controlparking braking ording tochanges ofsizeand direction ofsupporting counterforce firstobtains initialvalue through theforcesensor,and then according tomechanical balanceequation gets offthesizeofneeded braking force which makes automobile park on the uphillandsupporting counterforce critical value when the automobile need remove braking force sensor for detecting changes ofsupporting counterforce