EMD – Extended multiplication and division

Block SymbolLicensing group: STANDARD

Function Description
The EMD block multiplies and divides analog input signals u1, u2, u3 and u4 with corresponding weights a, b, c and d. The output y is then given by

y = \frac{(a * u1 + a0) (b * u2 + b0)}{(c * u3 + c0) (d * u4 + d0)} .

(4.1)

The output $E$ is set to on in the case that the denominator in the equation (4.1) is equal to $0$ and the output $y$ is substituted by $y = yerr$ .

This block propagates the signal quality. More information can be found in the 1.4 section.

Input

u1..u4	Analog input of the block	Double (F64)

Parameter

a	Weighting coefficient of the u1 input $⊙$ 1.0	Double (F64)
a0	Additive constant for u1 input	Double (F64)
b	Weighting coefficient of the u2 input $⊙$ 1.0	Double (F64)
b0	Additive constant for u1 input	Double (F64)
c	Weighting coefficient of the u3 input $⊙$ 1.0	Double (F64)
c0	Additive constant for u1 input	Double (F64)
d	Weighting coefficient of the u4 input $⊙$ 1.0	Double (F64)
d0	Additive constant for u1 input	Double (F64)
yerr	Substitute value for an error case $⊙$ 1.0	Double (F64)

Output

y	Analog output of the block	Double (F64)
E	Error flag - division by zero	Bool
	off .. No error on ... An error occurred

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