外文翻译
issues. Programmable Logic Controller PLC-controlled machine hand control system for material 可编程程序控制器PLC控制的上下料机械手控制系统动作简便、 up and down movement is simple, circuit design is reasonable, while a strong anti-jamming 线路设计合理、具有较强的抗干扰能力，
capability, ensuring the system’s reliability, reduced maintenance rate, and improve work 保证了系统运行的可靠性，降低了维修率，提高了工作效率
efficiency. Machine hand technology related to mechanics, mechanics, electrical hydraulic 机械手技术涉及到力学、机械学、电气液压技术、
technology, automatic control technology, sensor technology and computer technology and other 自动控制技术、传感器技术和计算机技术等学科领域，
fields of science, is a cross-disciplinary technology.
是一门跨学科综合技术
1. An overview of industrial manipulator
1工业机械手的概述
Machine hand is a kind of positioning control which can be automated and can be
机械手是一种能自动化定位控制并可
re-programmed to change in multi-functional machine, which has multiple degrees of freedom can 重新编程序以变动的多功能机器，它有多个自由度，
be used to carry an object in order to complete the work in different environments. Low wages in 可用来搬运物体以完成在各个不同环境中工作。在工资水平较低 China, plastic products industry, although still a labor-intensive, mechanical hand use has become 的中国，塑料制品行业尽管仍属于劳动力密集型，机械手的使用已经 increasingly popular. Electronics and automotive industries that Europe and the Unites States 越来越普及。那些电子和汽车业的欧美跨国公司很早就在它们设在中 multinational companies very early in their factories in China, the introduction of automated 国的工厂中引进了自动化生产。
production. But now the changes are those found in industrial-intensive South China, East China’s