Test Stand for Rankine Power Plant Literature Review: Difference between revisions

This page is a literature review.Feel free to edit this page and add sources and summaries.Read more...

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This page is a literature review.Feel free to edit this page and add sources and summaries.Read more...

Background

This page is dedicated to the literature review of using affordable open source hardware to create a bench stand that to test small rankine cycle steam power plant devices. This task requires the following pieces:

• Stands and fixture hardware
• DAQ system with Temperature, Pressure, RPM, Torque Transducers
• Loading Device

Literature will be organized with these as catagroies for organizational purposes.

Literature

Stands and fixture hardware

9 open source test-automation frameworks[1]

Abstract: A test-automation framework is a set of best practices, common tools, and libraries that help quality-assurance testers assess the functionality, security, usability, and accessibility of multiple web and mobile applications. In a "quick-click" digital world, we're accustomed to fulfilling our needs in a jiffy. This is one reason why the software market is flooded with hundreds of test-automation frameworks.

Although teams could build elaborate automated testing frameworks, there's usually little reason to spend the money, resources, and person-hours to do so when they can achieve equal or even better results with existing open source tools, libraries, and testing frameworks. Other reasons to use existing open source test-automation frameworks is that they are:

• Reusable
• Easy to maintain
• In need of minimum manual intervention
• Stable in a volatile environment
• Scalable

11 top open-source test automation frameworks: How to choose[2]

Abstract: If you're thinking about building your own test automation framework, think again. In most cases, you'd do better to consider one or more of the open-source options available.

That's because, in general, a framework is a set of best practices, assumptions, common tools, and libraries that you can use across teams. You simply don't need to build one that's unique to your dev environment. A framework will help make your test automation code reusable, maintainable, and stable—and save your business from costly defects. After all, even minor bugs can lead to big problems.

Teams that take these benefits to the extreme by building their own elaborate automation frameworks from scratch drive me crazy. That's because they could have easily made use of existing open-source tools and libraries that would have met their needs without writing any code—and, in most cases, with better results.

While using open-source tools is usually a better option than building your own framework from scratch, I'm not saying open-source test automation tools are all you need. Once you understand how to choose the right test automation tool for each role in your organization, you may end up with a mix of commercial and open-source options.

Here are the top open-source testing frameworks, and how to evaluate them.

DAQ system

A low-cost open-source data acquisition system[3]

Abstract: Data acquisition is present in several laboratory, test and production applications. In this paper, an USB controlled data acquisition device, especially suitable for use in both industrial and academic environments, is presented. It is a powerful learning tool, practical, easy to use, and low cost. Unlike other devices, it provides all the information about its inner design, both at hardware and software levels, and can be used without any restrictions as additional teaching material. We present an example of use.

Low-cost open-source multifunction data acquisition system for accurate measurements[4]

Abstract: Engineers and scientists commonly use data acquisition hardware and software to research unknown characteristics through measurement and analysis. Computer-based data acquisition systems are a powerful, flexible, and cost-effective measurement solution. This paper presents the hardware and firmware design of a low-cost computer-based data acquisition system that can be very interesting for conducting laboratory experiments and industrial applications. Its open-source philosophy opens the door for free software users and developers that would be interested in contributing with the project.

Loading Device

RAPID: An Inexpensive Open Source Dynamometer for Robotics Applications[5]

Abstract: This paper describes the development of an automated dynamometer to characterize brushed direct current motors. The unique mechanical design allows the testing of a wide range of motor sizes. The motor under test is subjected to a given pulse width modulated voltage signal and position, current, and voltage measurements are simultaneously recorded from the integrated sensor suite. An electromechanical motor model is developed by combining the voltage and torque balance equations of the system. A least-squares algorithm is used to estimate the parameters that best fit the observed data to the specified gray box model. The system retains a low cost by using off-the-shelf electronics and cheaply fabricated mechanical parts. The inertia and friction of the system are carefully modeled, removing the need for an expensive torque sensor. The mechanical drawings, electrical schematics, and software are open source and freely available for download. Consistent parameter estimates from a set of hightolerance and well-documented identical motors demonstrate the accuracy and precision of the system. Index Terms—Actuator dynamics, dynamometer, friction modeling, parameter estimation.

References