Dynamic Simulation and Test Verifcation of Hydraulic Automatic Tensioner for an Engine Timing Chain Drive System

As a fundamental component of an automobile engine’s timing chain drive system, the hydraulic automatic tensioner signifcantly enhances fuel economy while minimizing system vibrations and noise. However, there is a noticeable lack of research on automatic hydraulic tensioners. This study presents a comprehensive calculation approach for the principal parameters of a hydraulic automatic tensioner. An efective method, grounded in hydraulics and multibody dynamics, was introduced for estimating the dynamic response of such a tensioner. The simulation model developed for the hydraulic tensioner is characterized by its rapid dynamic response, consistent operation, and high accuracy. The dynamic behavior of the tensioner was analyzed under varying boundary conditions, using sinusoidal signal excitation. It was observed that the maximum damping force increases with a decreasing leakage gap. Conversely, an increase in oil temperature or air content leads to a decrease in the maximum damping force. The reaction forces derived from these calculations align well with experimental results. This calculation and simulation approach ofers considerable value for the design of innovative hydraulic tensioners. It not only streamlines the design phase, minimizes the number of trials, and reduces product costs, but also provides robust insights for evaluating the performance of hydraulic tensioners.

Design and Realization of Automatic Warehouse Based on S7-1500PLC

In order to improve the efficiency of automatic warehouse control system,the experimental platform of stereoscopic warehouse with s7-1500plc is designed.The manipulator is driven by stepper motor and servo motor to realize x,y and Z three-axis space motion.The material transmission system is built by general-purpose G120 inverter.HMI KTP700 realizes control and status monitoring.The materials are identified and classified by RFID sensor and other sensors.TIAV15 software build PROFINET com­munication and PROFIBUS communication network.Using the GRAPH language programming can improve the visualization degree of application and solve the complex problems of program design and debugging of the warehouse control system.Through the design of hardware and software,a set of complete control system design scheme is formed,which has high practical value and provides an excellent teaching and experiment platform for the intelligent storage system.

Design and Application of Automatic Test System of Soil Water Characteristic Curve

[Objective] In order to better meet the requirement of crops on a more and more accurate water content under various planting environment of modern agri-culture, an automatic test system of soil water characteristic curve was designed by combining the conceptions of soil moisture content and soil water potential. [Method] Electronic soil moisture tension meter was used to determine the real-time tension value of soil moisture in the tested container, and the electronic Weigh sensor was used to determine soil Weigh. Minusing method was used to calculate soil moisture content, based on which the soil water characteristic curve was plotted. [Result] Through the filed survey of 2 different kinds of soil in Jiangsu Province, the results were as fol ows： soil of different composition showed different trend in soil water characteristic curve that the soil water characteristic relation of the sandy soil in the old course of the Yel ow River in Xuzhou was Y=-0.000 2X3＋0.027 7X2-1.644 5X＋38.161, R2=0.991 9; while the soil water characteristic relation of the saline-alkali soil in Jinhai Farm of Dafeng was Y=-0.00 2X2-0.426X＋39.905, R2=0.991 3. [Con-clusion] The automatic test system of soil water characteristic curve soil water char-acteristics curve could reflect soil moisture content and soil water potential, as wel as reflect the effectiveness of soil water to plant growth, providing basis for the sci-entific irrigation.

PLC自动化控制系统在造纸污水处理中的应用

造纸行业不但促进了文化发展,还为国家的经济发展贡献了力量。但是造纸过程中产生的废水污水对环境构成了很大的威胁,造纸污水的处理是不容忽视的问题。目前造纸污水的处理主要还是依靠人力,自动化系统协助水平较低。将PLC自动化控制系统合理运用于造纸污水的处理中,科学高效处理污水,可达到可持续发展的目的,提高生产效率。基于此,从污水源头及污水处理的难点分析,结合PLC自动化控制系统特点,从控制方式、通讯网络、软件以及整个系统多层次分析,提出了一种基于自动化处理污水的PLC系统设计方案,期望能为高效处理造纸污水提供借鉴。

PLC技术的造纸机械设备自动控制系统设计与研究

新型造纸公司依托于高科技实现了生产流程的机械化和自动化,造纸行业的生产效率和效益都得到了提升。PLC技术在工业自动化生产中应用广泛,在造纸机械设备的应用有利于提高造纸设备的自动化运转,同时有助于提高产品的质量,节约产品的人力成本和时间成本等。对PLC技术进行了简要介绍,并讨论了其在造纸机械设备的应用的形式以及自动化设计系统的设计等,为造纸行业的进一步发展提供更多的技术支撑。

基于PLC的油田注水全自动监控模型构建

油田注水全自动监控能够减少能耗,为实现油田注水全自动监控,构建一种基于PLC的油田注水全自动监控模型。首先设定监测目标,将注水量、供水量、注水井压力和注水井总流量作为约束条件,并建立基于油压、套压、注水水质、注水量、注水温度等预警指标,采用PID与PLC结合的方法实现油田注水全自动监控。实验结果表明,所提油田注水全自动监控模型在注水量监控、缓存罐液位监测、回水管路液体压力、油压监测等方面具有较高的准确性,能够满足方法设计需求,具有一定应用价值。

基于MCGS和PLC的剪板机电气控制系统设计

剪板机是工业中常用的一种对材料进行裁剪的工具,针对剪板机工作的安全性和可靠的操作性、以及剪板机工作流程和控制特点进行了分析,选用人机交互MCGS组态技术和FX3U-48MR型PLC组合作为控制单元,设计了剪板机的人机交互界面进行实时监控和数据采集,剪板机工作的电气控制电路和软件控制系统。经过实践,该设计方案合理,安全可靠性高,实用性强,达到了设计要求。

Development of PLC-based Tension Control System

Fiber winding tension is an important factor in the molding techniques of composite material which influences the quality of winding product directly, and the tension control is a key technique in fiber winding techniques. This paper introduces a closed-loop tension control system with the programmable logic controller （PLC） with function modules as its control kernel, the alternating current （AC） servo motor as execute element and the radius-following device to accomplish the real-time radius compensation. The mechanism of the tension control system is analyzed and the numerical model is set up. The compensation technique of the radius of the scroll is analyzed. Experimental results show that the system is well qualified with high control precision and high reaction speed.

基于PLC自动分拣控制系统设计

随着物流行业的现代化发展,自动分拣控制系统已成为提高物流效率的关键技术之一。该文探讨了自动分拣控制系统的设计要点,包括系统设计、硬件选择、软件设计以及模拟仿真。该系统采用了先进的传感器技术、智能算法,实现对物品的快速识别、准确分类和高效传输。通过合理的设计和实施,自动分拣控制系统可以显著提高物流效率,降低运营成本,为物流行业的可持续发展做出贡献。

基于PLC的污水脱盐处理自动控制系统

本文针对我国污水脱盐处理系统所存在的问题,介绍了一款基于PLC的自动化控制系统,将先进的超滤技术、反渗透膜技术和PLC技术结合,在提升系统的自动化水平和稳定性的同时实现双模工艺处理污水,保证处理后的高水质。

PLC技术在煤矿电气工程自动化控制中的应用

为进一步探究煤矿电气工程自动化控制水平的提升路径,结合煤矿井下皮带机设备的电气自动化控制工作需要,以PLC技术为核心,构建面向皮带机的煤矿电气工程自动化控制系统,并对系统的控制站、通信功能、远程监控、人机交互等各方面的功能均进行详细设计,以实现系统功能。从现场测试效果来看,该系统能够实现对皮带机的有效监控,表明该系统具有一定的应用价值。

以PLC项目课程为例高职院校教学能力比赛教学设计与实践

按照全国职业院校技能大赛教学能力比赛方案的要求,选取自动化生产线单站的PLC典型应用为例,从教学基本情况、教学整体设计、教学实施过程、学生学习效果和教学反思改进5个部分进行阐述,介绍了课堂教学设计和实施情况,探索职业院校可编程控制器技术及应用课程教学改革实践,为课堂教学改革提供思路。

基于PLC的药品自动灌装控制系统设计

应用汇川PLC作为主控制器,设计优化了药品自动灌装控制系统,以提高药品灌装生产线的速度和精度,保障药品成分比例稳定的高品质要求。文章通过对灌装工艺的需求分析,确定PLC的I/O分配、控制流程,通过优化PLC程序、触摸屏组态等措施进行了改进设计。运行实践结果显示:改进优化后的控制系统,产品成分比例稳定性提高,故障率降低,系统运行更为流畅,灌装质量及生产效率大大提升。

基于PLC和触摸屏的自动码垛机实训平台设计

针对目前PLC实训平台缺少人机交互功能、采用的模拟被控对象直观性差等问题,设计了基于PLC和触摸屏的自动码垛机实训平台。根据自动码垛机的工艺要求,给出了控制系统的硬件电路图、PLC控制程序以及上位机监控界面。该实训平台形象直观,提高了学生开发PLC系统和组态上位机界面的能力,实践教学效果良好。

基于PLC的全自动码垛机电气控制系统设计研究

自动码垛机需要实现多轴运动控制,包括各种传动部件的精确控制和同步。需要考虑运动规划、速度控制、位置反馈等方面,这使得确保系统的稳定性和精度难度较高。为此,设计基于PLC的全自动码垛机电气控制系统。首先,通过PLC、传感器、执行器、操作面板和人机界面、电源和电气元完成系统的整体硬件的设计;其次,设计自动取料模块和速度电气控制器。对于系统软件部分,先设计PLC梯形图。基于此,结合抗扰电气控制器原理,再设计全自动码垛机的鲁棒电气控制算法。实验结果表明,所设计系统能够精准跟踪全自动码垛机机械臂的关节轨迹,说明该系统的电气控制效果较好,且具有理想的抗干扰性。

Research on technology of automatic welding machine and procedure for pile pipes of offshore jacket platform

Because of the high requirement of quality,vile working environment and great difficulty of automatic welding,MMAW is usually adopted for the welding of the platform jacket and the pile pipe.Its low efficiency and hard working is one of the choke points for construction progress. In this article,an up-to-date technology for platform pile pipe welding was introduced. Cored with FCW-S and combined with the characters and requirements of platform construction,the special automatic horizontal welding equipment and process were developed. Further more,the offshore application were introduced too.

基于PLC的滤站自动控制系统设计

针对滤站的污水处理流程,设计基于可编程逻辑控制器(Programmable Logic Controller,PLC)的滤站自动控制系统,并详细阐述该系统的硬件设计、软件设计。通过应用自动控制系统,滤站能够自动完成污水处理流程,缩短人工时间,提高工作效率。

基于PLC技术的烧结除尘自动卸灰机器人设计

作为钢铁生产中的重要环节,烧结过程产生了大量粉尘,严重威胁了环境与工人的身体健康。因此,采用自动卸灰机器人对提高作业效率、减少环境污染、保证作业安全具有重要意义。作为自动控制的核心,可编程控制器具有灵活多变、可靠性高的特点,是实现上述目的的理想选择。详细介绍了基于PLC技术的烧结除尘自动卸灰机器人的设计与实施,包括除尘卸灰系统的工艺、控制原理、PLC系统的选型与配置、机器人的运动控制设计、传感器的集成与数据处理以及安全与应急处理机制,提供了全面的设计蓝图,旨在实现烧结过程中除尘效率的最大化。

Design of an Automatic Loading-and-Unloading Manipulator

In order to achieve workpiece′s automatic loading-and-unloading, this paper designs a manipulator. Use the vacuum chuck mechanism to achieve the function of reclaiming and the cylinder rails to achieve the function of pick-feeding materials. PLC control technology is applied to control system and improve the efficiency and reduce human labor.To ensure the strength,Solidworks simulation performs thestress and strain analysis to verify material strength.

The design of automatic loading-and-unloading material manipulator for telescopic punch

To reduce the amount of labor in the sheet metal stamping industry, improve the processing efficiency and safety factor and realize the automatic production of stamping, this paper designs a new type of overall plan about automatic loading and unloading material manipulator for telescopic punch which can realize the telescopic movements with two degrees. The mechanical structure of the manipulator includes a lifting device and a telescopic device. Using PLC control program, the control system can automatically achieve continuous beat actions of drawing and stacking for the processing raw materials. According to the mechanical structure, the paper analyzes the working principle and control strategy of each component in the loading-and-unloading material manipulator systems.