| 无土栽培营养液循环控制系统 |
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| 引用本文： | 秦琳琳,孙德敏,王永,张利. 无土栽培营养液循环控制系统[J]. 农业工程学报, 2003, 19(4): 264-266 |
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| 作者姓名： | 秦琳琳 孙德敏 王永 张利 |
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| 作者单位： | 中国科学技术大学自动化系,合肥,230027 |
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| 基金项目： | 国家“863”项目“可控环境农业数据采集与自动控制系统研究”(2001AA247021)资助 |
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| 摘 要： | 该文介绍了营养液循环控制系统的设计和构成，营养液检测控制过程。采用最小二乘拟合的方法建立离子选择电极的测量模型，从而实现温室无土栽培中营养液的在线检测。采用动态矩阵控制算法控制离子浓度，在一定程度上克服了某些不确定干扰的影响，并解决了超调的问题。
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| 关 键 词： | 无土栽培； 营养液； 动态矩阵控制； 离子选择电极 |
| 文章编号： | 1002-6819(2003)04-0264-03 |
| 收稿时间： | 2002-08-06 |
| 修稿时间： | 2002-08-06 |
Control system of circulating nutrient solution system in soilless culture |
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| Qin LinLin,Sun Demin,Wang Yong and Zhang Li. Control system of circulating nutrient solution system in soilless culture[J]. Transactions of the Chinese Society of Agricultural Engineering, 2003, 19(4): 264-266 |
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| Authors: | Qin LinLin Sun Demin Wang Yong Zhang Li |
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| Abstract: | The system structure and design for circulating nutrient solution system were introduced in this paper. The solution on-line measurement and control were constructed. An approach based on least square fitting was applied to nutrition solution on-line measurement. The dynamic matrix control was developed to control the ion density, which has ability to reject disturbance and it was a near perfect response with no overshoot. |
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| Keywords: | soilless culture nutrient solution dynamic matrix control ion selective electrode |
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