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一、系统的组成和特点 1.系统的组成电动单元组合仪表(以下简称单元仪表)对于以回路控制方式为主的系统是特别适用的。随着生产过程的强化,系统反应速度增快,过程之间的关联加强,用简单的回路控制方式已难满足这种复杂系统提出的品质要求。系统的复杂化,不仅给制造,同时也给使用带来了困难。改善人——机联系、简化系统的操作使用成为大型系统急待解决的问题。随着仪表用量的激增,仪表的可靠性以及系统的安全
First, the composition and characteristics of the system 1. The composition of the system Electric unit combination meter (hereinafter referred to as the unit meter) for the loop control system is particularly applicable. With the strengthening of the production process, the response speed of the system is quicker and the correlation between the processes is strengthened. With the simple loop control method, it has been difficult to meet the quality requirements of such a complex system. Complex system, not only to manufacturing, but also brought difficulties to use. Improve the man-machine contact, simplify the operation of the system become a large system to be solved. With the surge in instrument usage, instrument reliability and system safety