Introduction to Mechatronics: An Integrated Approach by Biswanath Samanta

Author:Biswanath Samanta
Language: eng
Format: epub, pdf
ISBN: 9783031293207
Publisher: Springer International Publishing

(7.60)

The frequency response of the charge amplifier can be obtained using s = jω. The amplitude ratio can be expressed as

(7.61)

For low-frequency range such that τω ≪ 1, , whereas for higher-frequency range τω ≫ 1, .

7.4.5 A Piezoelectric Accelerometer with a Charge Amplifier

The characteristics of a piezoelectric accelerometer and a charge amplifier combination can be expressed by cascading the individual characteristic Eqs. (7.51) and (7.61):

(7.62)

The left-hand side of Eq. (7.62) can be simplified as where k is termed as voltage sensitivity of the piezoelectric accelerometer-charge amplifier combination and is expressed in :

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