![]() A DCS is composed of many process control stations and these stations can be seen all around the plant so that the individual loop and also the devices of the process can be controlled. In a distributed control system there are many computers and the total work will be divided into all these computers. The major drawback of direct digital control is that it only uses one processor to do the process, because of this a single error could disturb a large number of controlled variables and also it could stop the process. This type of computer control would have a software program and it would define all the control functions, setpoint, and also the deviation about the nominal. The DDC control has the ability to handle the multivariable processes and they can do this with the interaction between elements. The direct digital control is known as a loop control too, because the digital computer can do the functions of a comparator, controller, and they can also do certain safeguarding operations. The process regulation is carried out by a digital computer according to the time. This will the production data of a manufacturing plantĪ DDC can be described as a computer process control system and in this system, there are certain components that are conventional and this conventional component is replaced by a digital controller. This is the data that shows the equipment status while it is in the process and how it does the process. This is the measured value of the input parameters and also the output variables which represent the process performance. The central monitoring panels will be big due to the large number of controllers. The control loop coordination will be difficult and also the implementation of the control algorithms rather than the PID is really difficult. The cabling cost of the analog controller will be high. These controllers will be in the control room and it would do the distributed control and monitoring. What is the difference between analog and digital controller? In the case of a closed-loop computer control it would take feedback from the process and according to the feedback certain changes will be done in the process to get the desired value. In the open-loop computer process control, it won’t take any feedback from the process in order to complete the system process. The computer process controls are classified as open and closed-loop process control. How computer process controls are classified? It would monitor and record the events and sequence.Process output will be compared with the required output.Data conversion would be done with scaling and checking.It would do the measurements and data acquisition.What are the functions of a computer aided process control? What is a feedback control system and what are its types?.What are the types of instrumentation switches?. ![]() What are the final control elements in a control system?.We can see that many industrial operations are carried out with computer process control. With the help of a computer process control, we can determine the status of the equipment, production performance, and also the quality of the product. It would do some optimizing strategy, and also actuate certain devices such as valves, switches, and furnaces which is the final control element in a process. The computer process control system would measure the process variables such as temperature, flow rate, and pressure. The computer process control is mostly related to chemicals, petroleum, food, etc. The automated system is operating by using a computer, the computer process control is specifically related to the continuous or semi-continuous operations. The computer process control can be described as controlling a manufacturing process with the help of a digital computer.
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