User`s guide

Control System Parts 6
-7
Control S
y
stem Parts
Control system parts have single-pin inputs and outputs. The
reference for input and output voltages is analog ground (0). An
enhancement to PSpice A/D means these components can be
connected together with no need for dummy load or input
resistors.
Table 6-1
lists the control system parts, grouped by function.
Also listed are characteristic attributes that may be set. In the
sections that follow, each part and its attributes are described in
more detail.
Table 6-1
Control System Parts
Category Symbol Description Attributes
Basic
Components
CONST constant VALUE
SUM adder
MULT multiplier
GAIN gain block GAIN
DIFF subtracter
Limiters LIMIT hard limiter LO, HI
GLIMIT limiter with gain LO, HI, GAIN
SOFTLIM soft (tanh) limiter LO, HI, GAIN
Chebyshev
Filters
LOPASS lowpass filter FP, FS, RIPPLE,
STOP
HIPASS highpass filter FP, FS, RIPPLE,
STOP
BANDPASS bandpass filter F0, F1, F2, F3,
RIPPLE, STOP
BANDREJ band reject (notch)
filter
F0, F1, F2, F3,
RIPPLE, STOP
Integrator and
Differentiator
INTEG integrator GAIN, IC
DIFFER differentiator GAIN
Table Look-Ups TABLE lookup table ROW1...ROW5
FTABLE frequency lookup
table
ROW1...ROW5