毕业设计(论文) 外文文献翻译 Classification of control systems there are three ways: by automatic classification methods in order to participate in the control mode classification, to adjust the law category. One way to control category 1, the open-loop control system if puter output of open loop control system to exercise control of the production process, but the control results --- the state of the production process does not affect puter control systems, computer \ controller \ production and other sectors does not constitute a closed loop, is called open-loop control puter. the production process of the state is no feedback to puter, but by the operator to monitor the status of the production process, decision control program, and tell puter to control the role of exercising control. 2, closed loop control puter to the production of an object or process control, the state can directly influence the production puter control system, called the closed-loop control puter. Control of puter monitor in the operator, the automatic acceptance of the production process state test results, calculate and determine the control scheme, the mand and control units (devices) of action, the role of exercising control of the production process. In such systems, aircraft ponents under control of control information sent to control device operation, the other running equipment condition as the outp