一、前言电荷放大器是一种特殊形式的运算放大器,它已广泛用于振动和冲击测量。当它和压电加速度计连用时,其等效电路如图1所示。本文主要介绍电荷放大器技术指标的测定及其校准。二、电荷放大器的校准: 1.适调(归一化)精度的测定 I. Introduction Charge amplifier is a special form of operational amplifier, which has been widely used in vibration and shock measurement. When it is used in conjunction with the piezoelectric accelerometer, the equivalent circuit shown in Figure 1. This article describes the charge amplifier technical indicators and calibration. Second, the charge amplifier calibration: 1. Fit (normalized) the determination of accuracy