The development of modern production and science and technology not only puts forward higher and higher requirements for automation technology, but also provides necessary conditions for the innovation of automation technology. After the 1970s, automation began to develop to complex system control and advanced intelligent control. It is widely used in various fields such as national defense, scientific research and economy to realize larger-scale automation, such as integrated automation system of large enterprises, national railway automatic dispatching system, automatic dispatching system of national power network, air traffic control system, urban traffic control system, automatic command system, national economic management system, etc. The application of automation is expanding from engineering field to non engineering field, such as medical automation, population control, economic management automation and so on. Automation will imitate human intelligence to a greater exte…