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首先介绍了自动换档的基本原理和液力变矩器的原始特性,在此基础上提出了应用于液力传动工程车辆上的自动换档方法。给出了基于PLC的硬件组成框图和主要软件流程,并对软件设计过程作了较为详尽的介绍。
Firstly, the basic principle of automatic gear shift and the original characteristics of hydraulic torque converter are introduced. Based on this, the automatic gear shift method applied to hydraulic transmission engineering vehicle is put forward. The hardware block diagram and the main software flow based on PLC are given, and the software design process is introduced in more detail.