现代机械工程是由能量流、材料流和信号流构成的技术系统,其目标不仅是为了实现生产过程的自动化,而且还要实现管理事务的自动化;不仅能减轻和摆脱工人的体力劳动,而且能代替工人操纵机器,实现无人管理,并进行长时间的复杂程序的工作。与古典机械工程相比,现代机械工程多了一项“信号流”,即采用电子技术、液压与气动技术作为传感器件和检测与诊断手段,对机械进行自动控制,并作为自动管理的信息处理系统。 Modern mechanical engineering is a technical system composed of energy flow, material flow and signal flow. Its goal is not only to automate the production process, but also to automate the management of affairs. It can not only reduce and relieve workers’ manual labor but also can Instead of workers manipulating the machine, unmanaged and long-running complex processes are performed. Compared with the classical mechanical engineering, modern mechanical engineering more of a “signal flow”, that is, the use of electronic technology, hydraulic and pneumatic technology as a sensing device and testing and diagnostic tools for automatic control of machinery, and as an automatic management of information processing system.