PSD激光三角法弱反射微振动测量系统  

A system measuring micro vibration in weak reflection based on PSD and laser triangulation method

作　　者：曾宪阳[1] 张志良[1] 

机构地区：[1]浙江师范大学数理与信息工程学院,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2009年第3期298-302,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：浙江省自然科学基金资助项目(100039)

摘　　要：设计了基于位敏探测器PSD(Position Sensitive Detector)的激光三角法测量系统,可测量类似扬声器振膜物体的弱反射宽带微振动位移.信号处理采用全模拟电路实现,低输入偏置电流、中速运算放大器OP271EZ作为前置放大器,二像限除法器AD734构成除法电路.Based on the PSD （Position Sensitive Detector ） and the laser triangulation method, a system was designed to measure the wideband micro vibration displacement of an object with weak reflection, such as the loudspeaker diaphragm. The signal processing circuits were consisted of wholly analog elements, with the low input bias current, mid-speed operational amplifier OP271 EZ used as the preamplifier, and the two-quadrant divider AD734 as the division.

关 键 词：PSD 激光三角法 弱反射 微振动 

分 类 号：O329[理学—一般力学与力学基础]