2022年自动化专业毕业设计方案中英文翻译 .pdf
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1、中英文翻译精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 1 页,共 10 页2 / 10 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 contro
2、l system if the computer 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 the computer control systems, computer controller production and other sectors does not constitute a closed loop, i
3、s called open-loop control system computer. the production process of the state is no feedback to the computer, but by the operator to monitor the status of the production process, decision control program, and tell the computer to control the role of exercising control. 2, closed loop control syste
4、m computer to the production of an object or process control, the state can directly influence the production process computer control system, called the closed-loop control system computer. Control of the computer monitor in the operator, the automatic acceptance of the production process state tes
5、t results, calculate and determine the control scheme, the direct command and control units (devices of action, the role of exercising control of the production process. In such systems, aircraft control components under control of control information sent to control device operation, the other runn
6、ing equipment condition as the output, measured by the detection part, the feedback as input to the control computer。 to make control Computer Control Components production test components form a closed loop. We will call this form of control computer control closed-loop control. Closed loop control
7、 system computer, using a mathematical model to set the value of the production process and test results of the best value of the deviation between the feedback and control the production process to run at their best. 3, line control system as long as the computer controlled production of the contro
8、lled object or process, to exercise direct control, without human intervention are called the control computer on-line control, or on-line control system. 4, offline control system control computer does not directly participate in the control object or the controlled production process. It only mana
9、ged to complete the process of the controlled object or the status of testing, and testing of data processing。 and then develop control programs, the output control instruction, operator reference control instructions manually controlled operation to control parts of the object or subject control pr
10、ocess control. This control form is called off-line computer control system. 5, real-time control system control computer real-time control system is 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 2 页,共 10 页3 / 10 controlled by the control of the object or process, or request when the request proces
11、sing control, the control function in a timely manner to address and control systems, commonly used in the production process is interrupted for the occasion. Such as steel, each one refining furnace steel is a process。 and if the process rolling, rolling out each piece of steel considered a process
12、, each process is repeated. Only enter the process only requires a computer control. Once control of the computer, it requires a computer from the production process information in the required time to respond to or control. Such systems often use sophisticated interrupt system and interrupt handlin
13、g procedures to achieve. In summary, an online system is not necessarily a real-time system. But a real-time system must be an online system. Second, in order to participate in the control mode to Category 1, direct digital control system by the control computer to replace conventional analog instru
14、ments and direct regulation to control the production process, as the computer as digital signals, so named after the DDC control. Actually controlled the production process control components, control signals received by the process controller input / output channels of D / (D / A converter output
15、of the digital control computer volume to be converted into analog。 analog input control machine to go through the process of input / output channels of analog / digital (A / D converter into a digital number into the computer. DDC control systems often use a small computer or microprocessor, the ti
16、me-sharing system to achieve multiple points of control. Is in fact a discrete sampling with the controller, to achieve discrete multi-point control. DDC computer control system that has become the main control computer control system forms. DDC control of the advantage of flexibility, large, focuse
17、d on high reliability and low cost. Can use several forms of digital computing circuits, or even dozens of loop production process, integral to proportional - - differential (PID control to maintain the industrial state of the controlled object at a given value, the deviation small and stable. And a
18、s long as the change of control algorithms and applications can achieve more complex control. Such as feedforward control and the best control. Under normal circumstances, DDC-level control often more complex as the implementation of advanced control level. 2, supervisory computer control system sup
19、ervisory computer control system for a particular production process, according to the production process of various states, according to the production process of the mathematical model to calculate the best production equipment should be running a given value, and the best value automatically or m
20、anually on the DDC Executive-精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 3 页,共 10 页4 / 10 level computer or analog meter to align the regulation or control of the target set. By a DDC or adjust the instrument at various points on the production process (running equipment to exercise control. SCC
21、system is that it can guarantee the production process is always controlled the situation in the best condition to run, so get the most benefit. SCC results directly affect the merits of the first of its mathematical model, this should always improve the operation process model, and modify the contr
22、ol algorithm, and application control procedures. 3, multi-level control systems in modern manufacturing enterprises in the production process not only the need to address the problem of online control, and Huan Zhi Li called for a solution of production problems, the daily product line, the number
23、of arrangements for planning and scheduling, and Rose plans develop a long term planning, notice Xiaoshou prospects, there was multi-level control system. DDC class is mainly used for direct control of the production process, for PID, or feedforward control。 SCC level is mainly used for optimal cont
24、rol or adaptive control or learning control calculation, and command and control the same DDC class report back to the MIS class. DDC level usually microcomputers, SCC-level general use of small computers or high-end microcomputers. MIS Workshop main function of governance is based on plant-level pr
25、oduction of varieties issued, the number of orders and collect up the production process of the state of information, at any time reasonable schedule to achieve optimal control, command and SCC-level supervisory control. Factory management level MIS main function is to accept the company and factory
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