一种快速开关响应式多通道电荷放大器

精确制导武器(如制导炸弹、智能弹药等)技术对六轴加速度传感系统及由此构成的无陀螺捷联惯性导航系统的开关响应时间和体积有严格要求。对于压电式六轴加速度传感系统及其构成的无陀螺捷联惯性导航系统,其开关响应时间和体积直接决定于构成其信号调理系统的多通道电荷放大器。该文提出并定义了表征电荷放大器上电响应能力的开关响应特性的概念并给出了相应的测试方法。介绍了一种为提高开关响应特性和减小体积专门开发的多通道电荷放大器,实验测试结果表明,其具有良好的开关响应特性,可用于构成压电式六轴加速度传感系统/无陀螺捷联惯性导航系统的信号调理系统。

A Multi-Channel Charge Amplifier with Rapid On-Off Response

The precise guided weapons,such as guided bombs and intelligent ammunitions,have strict demand on the volume size and on-off response of the gyroscope-free inertial navigation system(GF-INS),which is mainly composed of a 6-axis acceleration sensory system.Regarding the GF-INS based on the piezoelectric 6-axis acceleration sensory system,the on-off response time and volume size directly depend on its signal conditioning system.In this paper,the on-off response characteristic that represents the power-on response performance of charge amplifiers is proposed and the measurement method is also introduced.In this paper,a small size multi-channel charge amplifier is developed.Furthermore,the testing results also show that the on-off response characteristic of the developed amplifier is rapid,which can be used to realize the GF-INS based on piezoelectric 6-axis acceleration systems.