Analog computers, Electrical Engineering

Assignment Help:

Q. Analog Computers?

Although not used as much as the digital computer (which nowadays forms the basic tool for numerical analysis and the solution of algebraic as well as differential equations), the analog computer still retains some significant advantages over the digital computer. A physical system can be represented by a set of differential equations which can be modeled on an analog computer that uses continuously varying voltages to represent system variables. The differential equation is solved by the computer, whereas the modeled quantities are readily varied by adjusting passive components on the computer. The mathematical functions (integration, addition, scaling, and inversion) are provided by op amps.

The analog computer components are shown in Figure. Let the ordinary differential equation to be solved be

1363_Analog Computers.png

The simulation of the solution is accomplished by the connection diagram of Figure 5.4.19. Time scaling is done by redefining t as t = ατ , in which case the differential equation [Equation] becomes

1064_Analog Computers1.png

1423_Analog Computers2.png

The coefficients may simply be scaled by the appropriate factors to change the solution time of the analog computer. For example, if α = 20, then t = 20 s corresponds to τ = 1 s, and thus the solution time may be reduced.


Related Discussions:- Analog computers

Filtering, Filtering  (i) Write an m-file "mymedian.m" which will ta...

Filtering  (i) Write an m-file "mymedian.m" which will take an image and filter size and perform median filtering. Display input and output image. Use  help median fun

Primacy of mosfet, Primacy of MOSFET In the year 1959, Dawon Kahng an...

Primacy of MOSFET In the year 1959, Dawon Kahng and Martin M. (John) Atalla at Bell laboratory invented the MOSFET. Operationally and structurally diverse from the bipolar ju

Name the different methods used for data transmission, What are the differe...

What are the different types of methods used for data transmission? The data transmission among two points involves unidirectional or bi-directional transmission of meaningful

Write out the general form of difference equation, Write out the General Fo...

Write out the General Form of Difference Equation? If the x[n] is the input and y[n] is the output of a linear time-invariant  system,  then  an  N  order  FIR  difference  equ

Interpoles, These are small poles fixed to the yoke and spaced in b/w the m...

These are small poles fixed to the yoke and spaced in b/w the main poles. They are wound with comparatively few heavy gauge Cu wire turns and are connected in series with the armat

Series-parallel magnetic circuit, Series-Parallel Magnetic Circuit: Fi...

Series-Parallel Magnetic Circuit: Figure shows an electromagnet made of cast steel contain a coil of 500 turns wound on the central limb. The cross-sectional area of the outer

Ideal or perfect transformer, a) A 230 V/25V, 50 HZ transformer with a rate...

a) A 230 V/25V, 50 HZ transformer with a rated primary current of 1,2 Amps is used to supply a number of 25 V, 30 Watt halogen light bulbs. Assuming an ideal transformer and tha

Effect of feedback on sensitivity to parameter changes, Q. Effect of feedba...

Q. Effect of feedback on sensitivity to parameter changes? A good control system, in general, should be rather insensitive to parameter variations, while it is still able to fo

Applied mechanics, State whether Lamis theorem is applicable for more than ...

State whether Lamis theorem is applicable for more than three coplanar concurrent forces?

Thevenins theorem, advantages and disadvantages of thevenins theorem

advantages and disadvantages of thevenins theorem

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