Download What Is the Fixed-Point Blockset?

Transcript
Canonical Forms
The block diagrams for h(z)/e(z) follow.
e(z)
+
h(z)
z
-1
z
-1
z
-1
-a1
-a2
-an
h(z)
1
----------- = ------------------------------------------------------------------------------–1
–2
–n
e(z)
1 + a 1 z + a 2 z + ... + a n z
Combining these two block diagrams yields the direct form II diagram shown
below. Notice that the feedforward part (top of block diagram) contains the
numerator coefficients and the feedback part (bottom of block diagram)
contains the denominator coefficients.
b0
b1
bm
+
e(z)
+
h(z)
z
-1
z
-1
z
-1
z
u(z)
u ( z )---------e(z)
-1
-a1
-a2
-am
-an
5-9