主要介绍快速支护装备作业平台在不同工作情况下的受力分析,利用SolidWorks软件建立作业平台的三维模型.对作业平台的三维模型进行了网格划分并进行了网格优化,针对不同工况分别进行有限元分析,从而看出工作平台在不同的工况下是否符合设计要求,同时也为模型的优化设计提供理论依据和先行数据.

This artical introduces diaphragm gland which is in pressure gauge,uses SolidWorks software for diaphragm gland to set up 3D structure,introduces theoretical foundation of injection Molding process,does grid partition of its 3D modelling and grid optimization,and their product forecast are analyzed by using Moldflow/MPI.It can improve de-bugging of product,reduce cost and shorten product development cycle.

The jigger automatic discharging system is time variable nonliear,introduce neural network PID(NN-PID) controller,and adaptive neural network PID control system's structure,priciple and application.This method is effiective.

In order to reduce downhole accidents,reduce the mortality,convenient for personnel,equipment into the well,electrical,mining environment real time monitoring and management,in the original on the basis of the underground industrial Ethernet,integrated networking sensors and wireless broadband technology,establishing a wireless sensing and optical fiber transmission network.Based on the interconnection of coal mine integrated automation software platform development,make safe production linkage control and real time monitoring,personnel tracking and positioning,mine disaster early warning,emergency rescue and disaster relief,mine information management to achieve the.Reduce the coal mine safety problems at the same time,accelerate the pace of coal mine enterprises.

Choose a platoon fan's split-phase motor;From the rotation vector analysis;Analysis of the two polar,four poleand and six pole pulsating magnetic field.single-phase ac asynchronous motor principle,And has 4 pole machine as object using multimeter and photoelectric tachometer practice verification;Draw reliable conclusions.

针对跳汰机自动排料系统的非线性、时变性的特点以及常规PID控制器存在的不足,设计了一种自适应模糊PID控制系统,并介绍了该控制系统的结构、原理及其控制规则。

针对某石油化工厂丁二烯生产线温度采用模糊PID控制方式存在的不足,通过改用单神经元PID控制并结合在线参数自适应Smith补偿方案实现温度实时控制。仿真分析表明:系统超调减小,调节时间缩短。

In modern measuring technology, it is often required to conduct site measuring with a digital voltmeter. The data measured will then be input into the micro-computer system to execute such functions like calculating, storing, controlling and displaying. The digital voltmeter control system described in this paper makes use of AT89c51 SC computer and ADC0809 A/D converter to fulfill the designing of the software as well as the electrical circuit. The voltmeter features in simple electrical circuit, lower use of elements, low cost and automatic regulation, while it can also easily carry out the duties of measuring A/D converted values from 8 routes and remote transfer of measuring data. The meter is capable of measuring voltage inputs from 8 routes ranging from 0 to 5 volt, and displaying the measurements in turn or only that from a selected route.