现场控制

Manna gets together carbohydrase ferments the process controls systematic wiring parameter of complex, influence rate of much, automation is low, because this designs,be based on CAN spot bus line ferment the process controls a system.

梗概： β-甘露聚糖酶发酵过程控制系统布线复杂、影响参数多、自动化程度低，因此设计一套基于CAN现场总线的发酵过程控制系统。

The chain between air valve operational rule and bed stratification is set up, which supplies the reliability for control decision-making of expert system. Expert control strategy is put forward based on the characteristic of jigging process in this article. Knowledge acquisition, knowledge expression, search method and reasoning mechanism are studied in the expert system. The rule-base is set up based on bed stratification status, bed mobility status, feed velocity, recording data on site, artificial float and sink test result.

本文根据跳汰过程的特点，提出了专家控制系统的构成框架，研究了分层过程控制专家系统的知识获取、知识的表示与检索方法及推理机制，并根据分层状态、床层松散状态、给料速度信息和现场运行记录及定时人工筛分浮沉结果进行推理，建立了专家系统规则库，给出了具体的风阀操作参数的调节方法。

We studied the achieving method of hardware system based on microprocessor and CAN-BUS in the scientific research item of concrete mixer plant controlling system.

首先，本文讨论了混凝土搅拌站控制系统目前发展的状况、需要解决的问题，现场总线技术的发展以及CAN总线的特点，给出了本论文研究的目的和意义，并提出了控制系统的整体改进方案。

Using the configurative software as a platform,an automatic distributed temperature control system for temperature is designed on the scene with PLC.

以组态软件为平台，通过PLC构建了一个分布式温度自动控制系统，实现对现场温度的自动控制。

After the reformation of grinding machine work safety credibility, he systems operation situation is good, the grinding precision is higher; Using the PLC control grinder movement, realized the grinder to start, the stop, the breakdown to stop, the emergency stop function, might cut grinder's control mode nimbly according to the movement request; Provides the overload, the underloading, breaks and the voltage is not balanced protects; The scene demonstration running status, realizes the intellectualized monitoring.

改造后的磨床工作安全可靠，系统运行情况良好，磨削精度更高；利用PLC控制磨床运行，实现了磨床启动、停止、故障停止、紧急停止的功能，可根据运行要求灵活切换磨床的控制方式；提供过载，轻载，断相和电压不平衡保护；现场显示运行状态，实现智能化监控。

Being a necessary detection method for CAN bus communication faults in severe environment of intense magnetic field, high temperature and high dust concentration, the invention has the advantages that high difficulty in detecting and eliminating CAN bus communication fault of electrobath control device series during aluminum electrolysis is effectively solved; the method is applicable for YFC-99 intelligent aluminum electrolysis fuzzy controller as well as any control system using CAN bus for communication.

本发明方法为在强磁场、高温、高粉尘浓度的恶劣环境中出现的CAN总线通讯故障提供了必要的检测手段，有效解决了铝电解生产现场槽控机系列CAN总线通讯故障的判断和处理难度大的问题。本发明适用于YFC-99型铝电解智能模糊控制机，也可适用于所有以CAN总线为通讯方式的任何控制系统。

With the rapid development of the technology of computer and automation, and the demand of the product locale, the computer control system is widely used in the manufacture of aluminum electrolytic and the efficiency is improved and the life-span of the aluminum electrolytic cell is increased.

随着计算机和自动化技术的发展，以及生产现场的需求，以计算机为核心的自动控制系统已经被广泛地应用于铝电解的生产过程控制，提高了铝电解的生产效率、延长了电解槽寿命。

The epigenist computer is an industrial process controller and can have an intelligent behind management and on time display system operation information and other function.

上位机是工业控制计算机，主要完成智能化的后台管理和实时显示运行信息等功能，下位机是可编程控制器，主要完成现场信号和数据的采集及实时控制。

The main contents are as follows.1. Method that controls quality of field observation values of unbonded elastic wire resistance type meters is studied. Methods that examine system error of different types in observation values are discussed.

主要研究内容如下：(1)研究了差动电阻式仪器现场观测值的质量控制方法；探讨了对监测数据中不同类型的系统误差进行检验的控制图法和连检定法。

The design of field electric executer based on CAN bus is given,which uses AT89C51 as the control chip.The sys-tem is composed of signal acquisition module,motor driver module,communication module,power module and so on,and re-alizes local PID control and digital communication.

在基地式CAN总线电动执行器的设计中选用AT89C51为控制核心，该系统主要由信号采集模块、电机驱动模块、CAN通信模块、电源模块及键盘显示等部分构成，实现现场的PID控制及数字通信功能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。