【正文】 of a group control system in serving both, car and hall calls, should be: to provide even service to every floor in a building。英文原文 2021 Workshop on Power Electronics and intelligent Transportation System Design and Practice of an Elevator Control System Based on PLC Xiaoling Yang1,2,Qunxiong Zhu1,Hong Xu1 1 College of information Science amp。 to minimize the time spent by passengers waiting for service。 and Oddeven rule, which an elevator only serves the odd floor and the other only serves the even floor. The Nearestneighbor Algorithm minimizes the length of the elevator?s empty move to the next request. it usually has very small average waiting times, but individual waiting times can bee quite large[2]. The Zoning Algorithm usually used in buildings which has heavy traffic situations, such as the office building at lunch time. Compared to the office building and shopping mall, the traffic flow of residential buildings is relatively low and even in every floor. Secondly, people usually think of elevators as purely functional objects and the experience of riding an elevator is time waited for most of them. Furthermore, there exist immense problems when attempting to satisfy all requirements. Considering all of the reasons above, we adopted the “minimum waiting time” algorithm to realize the 2 elevators? parallel running[4]. 5. Conclusions In this paper, we have improved an old elevator control system by using PLC, and realized the group control of 2 elevators. The new control system has been operated for 1 year, and its operation scenarios are as follows: (1) Down–Peak This traffic condition concerns people out of the building in the morning between 7am to 9am. (2) Up–Peak This condition concerns people entering the building between 5pm to 7pm. (3) Other It covers the day from 6:00 to 0:00 except the two situations above. And in this situation, there is only one elevator running. The results are expressed via an average waiting time and maximum waiting time(both given in seconds) are collected in Tables 3 and 4. Due to the nonparallel running before the reform, so the average waiting time and maximum waiting time of down–peak and the up–peak are very longer than the reformed. The practice results have showed the better performance of the improved control system. References [1] Ricardo Gudwin, Fernando Gomide, Marcio (i998). “A Fuzzy Elevator Group Controller With Linear Context Adaptation”. IEEE World Congress on Computational intelligence . Vol. 12, No. 5, . [2] Philipp Friese, J Rambau (2021). “Onlineoptimization of multielevator transport systems with reoptimization algorithms based on setpartitioning models”. Discrete Applied Mathematics .No. 154, . [3] Zheng Yanjun, Zhang Huiqiao, Ye Qingtai, Zhu Changming. (2021). “The Research on Elevator Dynamic Zoning Algorithm and it39。他還給出了這個系統(tǒng)的關(guān)鍵方面 —— 梯形圖。因此，電梯控制系統(tǒng)對于每一個電梯能夠順利，安全操作是至關(guān)重要的。因此，受企業(yè)委托，我們把住宅樓中用繼電器控制的電氣控制系統(tǒng)改善用 PLC 來控制。該系統(tǒng)主要由兩部分組成： 電力驅(qū)動系統(tǒng) 電力驅(qū)動系統(tǒng)包括：電梯轎廂，牽引電機，門廳電機，制動裝置和相關(guān)的 開關(guān)電路。 信號控制系統(tǒng) 電梯的控制信號主要有 PLC 來實現(xiàn)。 1nput Output 圖 1 PLC 信號控制系統(tǒng)圖 需求 控制系統(tǒng)的發(fā)展目標是在一個九層的住宅大樓中控制兩個電梯。在轎廂門上有兩個傳感器，這兩個傳感器能通知控制系統(tǒng)門的位置。 每層都有一個七段 LED 燈顯示當前電梯轎廂的位置。維護模式具有最高優(yōu)先權(quán)。在正常操作模式下，控制系統(tǒng)的基本任務(wù)是命令每個電梯向上或向下 移動，停止或啟動，打開或關(guān)閉廂門。 除了第一層和頂層以外，每一層在樓層控制盤上都有兩個按鈕，一個用于請求電梯上行，一個用于請求電梯下行。如果乘客想要在那一層下，電梯就不能通過那一層。 （ 2） 兩個電梯并列運行 在這種情形下，有兩個電梯同時為這棟大樓服務(wù)。同時，為了均衡停車次數(shù)，兩電梯將按一定的調(diào)度規(guī)則運作。在這里我們用西門子 PLC S7200 CPU226 的集中選擇控制方法和其擴展模塊。模塊中的信息傳輸是通過 PLC 的中間繼電器位實現(xiàn)的。這被稱為轎廂呼叫寄存。如圖 3 所示， — ， 和 是 PLC 中的輔助繼電器。當電梯被驅(qū)動器操控時，廳門呼叫不會被響應(yīng)并且電梯不會在乘客想要下的樓層停下來。當當前運行方向是電梯上行， 觸點閉合；相反，當當當前電梯運行方向是下行， 觸點斷開，繼電器 到 代表 2 樓到 8 樓轎廂停止呼叫請求信號。 電梯的方向 電梯可能向上或 向下運行，這取決于轎廂呼叫與廳門呼叫的組合。當電梯正在上行，上行燈被點亮，觸點 就閉合。 電梯的樓層停止 圖 6 顯示了電梯 停止功能 的梯形圖 。 是速度改變信號。另一種就是電梯的一組控制。 最近鄰算法最小化電梯占空比的長度。其次是人們常常認為的電梯作為純函數(shù)的對象，對他們中的大多數(shù)人來說坐電梯大部分時間就是在等。新的控制系統(tǒng)已經(jīng)運營了一年，操作場景如下： （ 1） 下降峰 這種狀況令人們在早上 7 點到 9 點離開建筑。結(jié)果是經(jīng)由平均等候時間和最大等待時間（同時給出了秒），如表3 和 表 4. 表 3 平均和最大等待時間（改革前） 表 4 平均和最大等待時間（改革后） 不平行運行改革前，在高峰和低谷時的平均等待時間和最小等待時間都比改革后要長。6a*CZ7H$dq8KqqfHVZFedswSyXTyamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。QA9wkxFyeQ^!djsXuyUP2kNXpRWXmAamp。gTXRm6X4NGpP$vSTTamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。QA9wkxFyeQ^!djsXuyUP2kNXpRWXmAamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。qYpEh5pDx2zVkumamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。MuWFA5uxY7JnD6YWRrWwc^vR9amp。qYpEh5pDx2zVkumamp。MuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZQcUE%amp。MuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZQcUE%amp。MuWFA5ux^Gjqv^$UE9wEwZQcUE%amp。MuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZQcUE%amp。MuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZQcUE%amp。MuWFA5ux^Gjqv^$UE9wEwZQcUE%amp。MuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^GjqvadNuKNamp。ksv*3tnGK8!z89AmYWpazadNuKNamp。ksv*3tnGK8!z89AmYWpazadNuKNamp。ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNuKNamp。gTXRm6X4NGpP$vSTTamp。ksv*3tnGK8!z89AmYWpazadNuKNamp。ksv*3tnGK8!z89AmYWpazadNuKNamp。ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNuKNamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。gTXRm6X4NGpP$vSTTamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。MuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$UE9wEwZQcUE%amp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。qYpEh5pDx2zVkumamp。MuWFA5uxY7JnD6YWRrWwc^vR9CpbK!zn%Mz84!z89Amv^$UE9wEwZQcUE%amp。MuWFA5ux^Gjqv^$UE9wEwZQcUE%amp。MuWFA5uxY7JnD6