摘要
本文所介绍的无土栽培供液自动控制系统,采用全新的设计理论与方法,打破了传统的采用占空比方法处理延时驱动的限制。解决了延时、供液驱动可在0～48h 大范围内分别独立调整的问题。本系统可广泛应用于需用定时驱动的控制系统之中。
A liquid supply control system designed with new theory and methods could adjust liq- uid supply driving at any time instead of delayed and separated adjustment from 0 to 48 hours,and overcame the restrict of traditionally using ratio between busy time and idle time.This system may be widely used in industry cycle control system.
出处
《山东农业大学学报（自然科学版）》
CSCD
1993年第4期433-436,共4页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
无土栽培
控制
电路系统
unsoil cultivation
automatic control
delay and running
