This paper discusses how the topic of programmable logic controllers was added to an existing senior level course in the mechanical engineering program at Rose-Hulman Institute of Technology. A two week "PLC"...
详细信息
This paper discusses how the topic of programmable logic controllers was added to an existing senior level course in the mechanical engineering program at Rose-Hulman Institute of Technology. A two week "PLC" experience was implemented based on the use of AllenBradley Pico PLCs and the PicoSoft application software. Additionally two different laboratory demonstration stations were built in-house to provide a "hands-on" control experience for students. This paper talks about how the "PLC" experience has been implemented and how well it has been received as part of the mechatronics course.
When many-core technology became available for industrial machinery, engineers had ques- tions. "What can you do with all of that processing power?" some wanted to know. "When would you need it?" o...
详细信息
When many-core technology became available for industrial machinery, engineers had ques- tions. "What can you do with all of that processing power?" some wanted to know. "When would you need it?" others asked. At the time, running a programmablelogic controller (PLC) program in PC-based automation software required one core.
The economic growth of five main companies in the roller coaster industry with the help of programmablelogic device (PLD) specialists is discussed. These specialists have already posted a sequential revenue increase ...
详细信息
The economic growth of five main companies in the roller coaster industry with the help of programmablelogic device (PLD) specialists is discussed. These specialists have already posted a sequential revenue increase of 10.3% in the first quarter in the year 2004. The primary difference between yesterday and today's PLD market is the forced shift from an industry almost completely dependent upon application segment, communications, to one that is much more broadly based. The revenue increase in these companies represent a much more sustainable type of growth.
programmable logic controllers (PLCs) run millions of processes and machines inside factories. PLCs have a lot of processing power and handle a variety of inputs or outputs. They typically run protocols like Profinet,...
详细信息
programmable logic controllers (PLCs) run millions of processes and machines inside factories. PLCs have a lot of processing power and handle a variety of inputs or outputs. They typically run protocols like Profinet, Profibus and, to a lesser extent, CANbus. Depending on the factory, plant personnel have created tactics over time to get production lines up and running as fast as they can when there's an unexpected interruption.
Thanks to the Internet technology, there have been many distance learning (web-based) courses offered by academic institutes around the world nowadays through the Internet. And these courses have benefited many studen...
详细信息
Thanks to the Internet technology, there have been many distance learning (web-based) courses offered by academic institutes around the world nowadays through the Internet. And these courses have benefited many students who might be constrained by distance and time. Nevertheless, most web-based courses are "lecturing courses" that cannot fulfill the need for engineering technology education. In this paper, we propose hardware/software architecture for a web-based distance laboratory for programmable logic controllers (PLCs). This Web-based PLC Lab allows the laboratory facilities shared among several academic institutes and can be accessed by registered students to practice PLC experiments at their own home, enhancing the quality of education without much increasing in the overall cost. With the help of web cameras, the students can even observe the live video of PLC experiments through the Internet.
The reciprocating compressor used in the industry consumes copious amounts of energy. Unnecessary energy consumption can be reduced by regulating the compressor capacity and by better satisfying its energy efficiency ...
详细信息
Whether to opt for the solid logic of a programmablelogic controller (PLC) or an open personal computer (PC)-based controller depends on the size and nature of the application. The difference between a PC and a PLC i...
详细信息
Whether to opt for the solid logic of a programmablelogic controller (PLC) or an open personal computer (PC)-based controller depends on the size and nature of the application. The difference between a PC and a PLC is essentially functional: PLC's primary task is to process logic in a deterministic manner. PLCs have dominated industrial control applications. However, PCs offer many advantages that are hard to resist. These include: faster performance, sophisticated development tools, availability of software products and I/O products, and competitive costs. A PC-based system would be more beneficial if more than half the I/O is analog. Otherwise, if more than half is digital, a PLC is probably the best answer.
The road construction safety traffic light system is designed to replace a manual traffic control on a road construction sites. This device can replace one or both flaggers during the two lane closures on the event of...
详细信息
The road construction safety traffic light system is designed to replace a manual traffic control on a road construction sites. This device can replace one or both flaggers during the two lane closures on the event of a road construction. The road construction safety traffic light system is considered one of the best devices in work zone traffic flow control systems. The device is a portable traffic light unit which can be best utilized in controlling traffic flow in a road construction site for long term or short term lane closures and to control two-way traffic in a single lane. By implementating new technologies in automating traffic flow in road construction site could possibly eliminate the usage of a conventional flagman at all times. The road construction safety traffic light system is a practical solution to solve problems which contribute towards hazards at road construction site and to be inline with the road safety regulation which is taken into granted by the contractors. The automated portable traffic light system can reduce direct costs in man power utilization and increase safety for the road users and construction workers by eliminating the need for a human flagmen. This system is applicable for public and privately funded road construction projects that require overnight or 24-hour traffic control as well as in different weather conditions.
The different views for programmablelogic Controller (PLC) in automation control industry is discussed. The first group is very content with the PLCs and have an endless supply to technicians and engineers who know P...
详细信息
The different views for programmablelogic Controller (PLC) in automation control industry is discussed. The first group is very content with the PLCs and have an endless supply to technicians and engineers who know PLC and they believe that supply of PLC will never run out. The second group of automation people is not comfortable with their humongous piles of PLC and they believe that it is costly and the technology is outdated and closed. They believe that new technology is more comfortable with open controllers based on standard PC technology with advancement of human machine interface.
Advanced design features plus the benefits intrinsic to BiCMOS technology means that Philips' ABT22V10 and LVT22V10 programmablelogic devices (PLD) offer many important advantages over CMOS devices while remainin...
详细信息
Advanced design features plus the benefits intrinsic to BiCMOS technology means that Philips' ABT22V10 and LVT22V10 programmablelogic devices (PLD) offer many important advantages over CMOS devices while remaining cost competitive. Metastable immune flip-flops combined with low noise and high drive capability, offer added value to designers.
暂无评论