MODEL: HJFT
FUNCTIONS
■ MOVING AVERAGE OUTPUT
This unit samples input signals every H seconds and
outputs proportionally to an average of N numbers of
sampled data. When a new input is sampled after
another H seconds, it gives up the oldest sample and
calculates a new average including the latest sample
and outputs proportionally.
INPUT
t
H
H
N numbers
N numbers
average
H : sampling cycle
OUTPUT
(0.1 to 100.0 seconds adjustable)
N : number of samples to be calculated
(1 to 8 adjustable)
t
•Step Input with Dead-Time
■ DEAD-TIME COMPUTING
This unit does not respond to an input signal for a
presetdead-timeduration. Inaddition, withadjusting
a time constant T, it generates a first order lag output
after the dead-time.
INPUT
0
t
e–Ls
X0
(s) =
X1
(s) + H
X
N (s)
OUTPUT
1 + T s
X
0
1
: output
: input
X
0
t
H x N
X
Dead Time = H N (s) (H ≤ T)
H : sampling cycle
(0.1 to 100.0 seconds adjustable)
N : numbers of samples to be calculated
(1 to 8 adjustable)
•
Step Input with Dead-Time Plus Time Constant
INPUT
T : time constant
(0.0 to 100.0 seconds adjustable)
0
OUTPUT
t
0
t
H x N
T
■DELAY BUFFER
•Step Input with Time Constant
This unit generates a first order lag output.
INPUT
1
X0
(s) =
X1 (s)
1 + T s
0
X
0
1
: output
: input
t
X
OUTPUT
T : time constant
(0.0 to 100.0 second adjustable)
0
t
T
HJFT SPECIFICATIONS
ES-3479 Rev.8 Page 4/5
http://www.m-system.co.jp/