农机化研究
農機化研究
농궤화연구
JOURNAL OF AGRICULTURAL MECHANIZATION RESEARCH
2014年
8期
189-192
,共4页
王向军%刘志刚%李荣%汪小志%林卫国%孙欣杰
王嚮軍%劉誌剛%李榮%汪小誌%林衛國%孫訢傑
왕향군%류지강%리영%왕소지%림위국%손흔걸
日光温室%物联网%传感器%智能网络%PID算法%PLC控制系统%数据传输
日光溫室%物聯網%傳感器%智能網絡%PID算法%PLC控製繫統%數據傳輸
일광온실%물련망%전감기%지능망락%PID산법%PLC공제계통%수거전수
greenhouse%Internet of Things%sensor%intelligent network%PID algorithm%PLC control system%data transmission
随着计算机硬件设备的不断更新和发展,计算机智能操作系统被广泛地应用到工程领域,其中PLC智能控制是最常用的智能控制系统之一。运用PID闭环控制算法,通过对 PID 算法的改进,降低了系统反应动作的延时时间,增大了系统的灵敏度。对于外部参数的采集过程,采用编程方式对参数采集过程实现了自动控制。为了验证设计的数学模型和算法的有效性,以日光温室物联网设计为例,对程序和算法进行了验证。通过计算发现:在相同样本输入的情况下,电机输出值和闭环PLC 系统的拟合值的结果相差不大,最大仅为0.2%,达到了控制要求。其中,丢包率最低仅为0.4%,符合计算机数据传输的精确性要求,为日光温室智能控制系统的研究提供了理论参考。
隨著計算機硬件設備的不斷更新和髮展,計算機智能操作繫統被廣汎地應用到工程領域,其中PLC智能控製是最常用的智能控製繫統之一。運用PID閉環控製算法,通過對 PID 算法的改進,降低瞭繫統反應動作的延時時間,增大瞭繫統的靈敏度。對于外部參數的採集過程,採用編程方式對參數採集過程實現瞭自動控製。為瞭驗證設計的數學模型和算法的有效性,以日光溫室物聯網設計為例,對程序和算法進行瞭驗證。通過計算髮現:在相同樣本輸入的情況下,電機輸齣值和閉環PLC 繫統的擬閤值的結果相差不大,最大僅為0.2%,達到瞭控製要求。其中,丟包率最低僅為0.4%,符閤計算機數據傳輸的精確性要求,為日光溫室智能控製繫統的研究提供瞭理論參攷。
수착계산궤경건설비적불단경신화발전,계산궤지능조작계통피엄범지응용도공정영역,기중PLC지능공제시최상용적지능공제계통지일。운용PID폐배공제산법,통과대 PID 산법적개진,강저료계통반응동작적연시시간,증대료계통적령민도。대우외부삼수적채집과정,채용편정방식대삼수채집과정실현료자동공제。위료험증설계적수학모형화산법적유효성,이일광온실물련망설계위례,대정서화산법진행료험증。통과계산발현:재상동양본수입적정황하,전궤수출치화폐배PLC 계통적의합치적결과상차불대,최대부위0.2%,체도료공제요구。기중,주포솔최저부위0.4%,부합계산궤수거전수적정학성요구,위일광온실지능공제계통적연구제공료이론삼고。
Along with the continuous renewal and development of computer hardware ,computer operating system is widely applied to the engineering fields , in which , intelligent control is one of the most commonly used intelligent control sys-tems .By using PID closed-loop control algorithm , an improvement of the PID algorithm reduced the system ’ s delay time of response , and increased the system ’ s sensitivity .As to the acquisition process for the external parameters ,by using the way of programming , it realizes the automatic control on the parameter acquisition process .In order to verify the va-lidity of the mathematical model and the algorithm ,it took the greenhouse network design as an example to verify the pro-cedure and the algorithm .Through calculation ,it was found that in the condition of the same sample input , the result is less different between the motor output and the fitting values of closed -loop PLC system of is small , and the maximum is 0 .2%, which achieved the control requirements .And the minimum packet loss rate is only 0 .4%, which meets the pre-cision of computer data transmission , and provides a theoretical reference for the study of intelligent control system in greenhouse .