Explain working of digital process control, Electrical Engineering

Assignment Help:

Q. Explain working of Digital Process Control?

Figure shows a block diagram for microcomputer-based control of a physical process, such as a chemical plant. A slight variation of the system can be used for automotive instrumentation in which sensors furnish various signals for speed, fuel reserve, battery voltage, oil pressure, engine temperature, and so on. The data are presented to the driver in one or more displays on the dashboard. In a physical process on the other hand, based on the display information, an operator can assess and direct the operation of the control process through a keyboard or other input devices to the microcomputer.

Various physical inputs, such as power and materials, are regulated by actuators, which are in turn controlled by the microcomputer. Electric signals related to the controlled-process parameters, such as pressure and temperature, are produced by various sensors, which in turn feed the information to the microcomputer. Actuators and sensors may be either analog or digital. Digital-to-analog (D/A) converters are used to convert the digital signals to analog form so as to suit the analog actuators, where as analog-to-digital (A/D) converters are employed to convert the analog sensor signals to digital form so as to suit the microcomputer.

1746_Digital Process Control.png

One can think of so many systems in daily practice controlled or monitored by microcomputers. Some examples include monitoring patients in intensive cardiac-care units of hospitals, nuclear-reactor controls, traffic signals, aircraft and automobile instrumentation, chemical plants, and various manufacturing processes.


Related Discussions:- Explain working of digital process control

Compare procedure and macro, Compare Procedure & Macro  Accessed by CAL...

Compare Procedure & Macro  Accessed by CALL & RET instruction Accessed during assembly with name given during program implementation to macro when defined Machine code for inst

Network analysis, expain how to do proper initial approximatio for the give...

expain how to do proper initial approximatio for the given cct....... by a example

Electonic principles, can you help with my electronic principle assignment

can you help with my electronic principle assignment

Explain source encoding or data compression, Q. Explain Source encoding or ...

Q. Explain Source encoding or data compression? The sequence of binary digits from the source encoder, known as the information sequence, is passed on to the channel encoder. T

Calculate the e.m.f. generated in armature of a d.c. machine, The armature ...

The armature of a d.c. machine has a resistance of 0.3 and is connected to a 200V supply. Calculate the e.m.f. generated when it is running (a) as a generator giving 80A (b) as a

Relative and absolute motion measuring device, a) With the help of a neat a...

a) With the help of a neat and clean sketch illustrate the difference between relative and absolute motion measuring device. b) Discuss electromechanical methods for calculating

Inverting comparator, what is the graph of inverting comparator,if input vo...

what is the graph of inverting comparator,if input voltage less than reference voltage

100 line exchange with two-motion line finders, In this design, there are 2...

In this design, there are 24 line finders. If any of the 100 subscribers has to get access to any of 24 two-motion selectors, it is necessary that every line finder is capable of r

Explain sahf instructions in 8086 family, Explain SAHF instructions in 80...

Explain SAHF instructions in 8086 family with example and their effect on flag. SAHF: Store AH register in flag register, this is an instruction utilized to store the data i

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd