Abstract:

Based on a kind of low drift integrator with auto-compensation, an alternant integrator has been designed. The integral time is divided into short time segment, and two integrators are used to integrate by turn. The whole integral signal can be obtained by adding two integrators’ output continuously. Controlled by CPLD, the alternant integrator’s drift is about 10mV in 400s, which can satisfy the experiment on EAST tokamak.

Key words: Alternant integrator, Drift, CPLD

摘要：

在一种自动补偿零漂积分器的基础上，设计了一种交替式积分器。该积分器把积分时间分割为短时间段，用两个自动补偿零漂积分器交替进行积分，通过累加电路将每段积分信号累加起来得到完整的积分信号。积分器采用CPLD控制时序，在400s内的漂移在10mV左右，能够满足EAST装置实验的需要。

关键词: 交替积分器, 漂移, CPLD