Fourier Sine Series (FORSIN)
Evaluates a Fourier Sine series at a user-specified value x.
Format
FORSIN (x, Shift, Frequency, Coefficients)
Arguments
x | Real variable that specifies the independent variable. |
Shift | Real variable that specifies a shift in the Fourier Sine series. |
Frequency | Real variable that specifies the fundamental frequency of the series. Assume that  is in radians per unit of the independent variable unless you use a D after the value for degrees. |
Coefficients | The real variables that define as many as thirty-one coefficients for the Fourier Sine series. |
Example
The following function defines a Fourier Sine, which is a harmonic function of TIME with a -0.25 shift, and a fundamental frequency of 0.5 cycle (
radians) per time unit:
radians) per time unit:FORSIN(TIME,-0.25, PI, 0, 1, 2, 3)
The function defined is as follows:
FORSIN = 0 + SIN(
*(TIME + 0.25))
+ 2*SIN(2
*(TIME + 0.25))
+ 3*SIN(3
*(TIME + 0.25))
*(TIME + 0.25))+ 2*SIN(2
*(TIME + 0.25))+ 3*SIN(3
*(TIME + 0.25))TIME is the current simulation time.