Chebyshevs Spacing of Accuracy Points Assignment Help

Analytical Method - Chebyshevs Spacing of Accuracy Points

Chebyshev's Spacing of Accuracy Points:

Assume xi and xf be initial and last values of variable x respectively. The function Ef (x) is required to be generated in the interval xi = xf. Consider the generated function be F = ( x, R1 , R2  ... Rk ) where R1, R2 . . . Rk be design parameters. The difference E (x) among the desired function & generated function may be represented by

                        E ( x) = f (x) - F ( x, R1 , R2  . . . Rk )                                                 . . . (7.11)

 At precision points or accuracy points say for x = x1, x2 . . . xk desired and generated functions agree and E (x) shall be zero. At other points E (x) shall have some value and that shall be the error. E (x) is known as 'structural error'. It is wanted that E (x) must be minimum and thus, spacing of accuracy points is very significant. An exact analysis for E (x) to be minimum is very complicated. The Chebyshev's spacing of accuracy points may always be taken as a primary approximation. The accuracy points as said by Chebyshev's spacing are given following

366_Chebyshevs Spacing of Accuracy Points.png

Furthermore Chebyshev's accuracy points attained from Eq. (7.12) will be utilized. The accuracy points may also be attained by the graphical method also as described in the following steps:

(a) Draw a circle of radius 'h' & centre on the x-axis at a distance 'a' from O.

 (b) write regular polygon of side '2k' in this circle such as the two sides are perpendicular to the x-axis.

 (c) Find out the locations of 'k' accuracy points by projecting the vertices on x-axis as illustrated in Figure

1832_chebyshev points.png

Figures (a) and (b) illustrate the geometric method for k = 3 and 4, respectively. As the aim is to acquire the values of accuracy points, semi-circles presenting inscribed polygons are adequate.


Expertsmind’s world class education services

We at www.expertsmind.com offer email based assignment help – homework help and projects assistance from k-12 academic level to college and university level and management and engineering studies. Our experts are helping students in their studies and they offer instant tutoring assistance giving their best practiced knowledge and spreading their world class education services through e-Learning program.

- Quality assignment help assistance 24x7 hrs
- Best qualified tutor’s network
- Time on delivery
- Quality assurance before delivery
- 100% originality and fresh work