Page 1170 - The Mechatronics Handbook
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INPUT
a
OUTPUT CANTILEVER
DISPLACEMENT SPRING
∆x INPUT ∆y
SENSOR
a
CENTERING
SPRING
SEISMIC SUPPORT
ELEMENT CHANNEL OUTPUT
(a) HORIZONTAL VERTICAL
INPUT
a
SEISMIC CENTERING
ELEMENT
SPRINGS
DISPLACEMENT
∆θ TRANSDUCER
OUTPUT
(b)
INPUT
a
DISPLACEMENT
SENSOR INPUT
a
SEISMIC
ELEMENT
SPRING
SEISMIC
COIL ELEMENT
OUTPUT
− CRYSTAL
+
(c) OUTPUT (d)
FIGURE 45.5 Seismic accelerometers: (a) rectilinear acceleration transducers, (b) rotary accelerometer, (c) force-
balance accelerometer, (d) piezoelectric accelerometer.
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