The Psd-based Multi-objective Two-dimensional Displacement Measurement System

In the design of the recoil system, the designer need the recoil resistance curve to evaluate the performance of the recoil system. It is very difficult for measuring the recoil resistance curve directly in the condition of recent technology, so it is only measured indirectly. The recoil displacement is an important factor in indirect measurement.According to analyzing the character of recoil movement and requirement of measurement, a two dimensions movement measurement system of multiplex aims based on PSD has been introduced in the dissertation. The measurement system applies the facular-orientation theory of position sensitive detector (PSD), the illuminants are fixed on the recoil part and the barbette and lighted by time-sharing. By detecting the movement of illuminants by PSD, the measurement system can acquire the recoil displacement.This dissertation analyzes the problems of every part of the measurement system and provides the solution. The primary research includes: the choice of the type of PSD and illuminant; the design of the timing-control circuit, signal processing circuit and the imaging system; the data acquisition module applying transient recorder and the software of data acquisition and computation adopting LabVIEW.At last the whole measurement system was tested by static experiment and dynamic experiment, which evaluates its performance. The system gets the requirement of design basically.