Implement of Fuzzy Control for Greenhouse Irrigation
By adopting the fuzzy control theory, a greenhouse irrigation auto-matic control system has been designed with the characteristic of accurate of the nonlinear, time-variability, long time delay and the characteristic of accurate mathematic model being hard to establish. Through some basic experiments, the basic domain of input and output of the fuzzy controller were ascertained. Time variables that were used to control the each connect duration of electromagnetic relay. Fuzzy control can be realized by MSP430F133 MCU control system with usage of the time variable. By the action of fuzzy control, proto-type field experimental results showed that first-order inertial character per-formed by the system with the constant —3540s, which was no overshoot. With simple structure, low price and high reliability, the accuracy of the system meets irrigation technical requirements of crops in greenhouse.
fuzzy control MSP430F133 time constant subsurface drip irrigation
Wenttao Ren Quanli Xiang Yi Yang Hongguang Cui Lili Dai
College of Engineering, Shenyang Agricultural University, Shenyang, 11086, China Shenyang Liaowuyi E-TEC Co, Shenyang, 110044, China
国际会议
南昌
英文
267-274
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）