Multisim仿真中的相位差测量

Multisim是一款很好的仿真软件,但是它在进行相位差测量时不能直接读数,为解决这一问题,提出了一种由测量放大器与波特图仪构建的测量电路.详细介绍了该测量电路的结构、工作原理及参数设置.通过实例电路的仿真测量,说明了测量方法及测量误差.测量结果表明该测量电路在Multisim中可完成对正弦电路中任意电压的相位差测量并直接显示,测量精度高.

Phase Deference Measurement in Multisim

Multisim is a good simulation software, but it cannot show the phase difference directly. In order to solve the problem, a measuring circuit, which was composed of instrumentation amplifier and Bord diagram instrument, was put forward. The structure, principle and parameters of the circuit were introduced in detail. By the simulating measurement of the example circuit, the measurement method and measurement error were described. The results indicate that the phase difference of any sinusoidal voltage can be measured and showed directly with high accuracy by the circuit.