I have spent quite a bit of time revising articles on machines in Wikipedia. I hope my contributions are an improvement.
When I started there was a lot of controversy over the definition of Machine, which forced me to introduce Machine (mechanical) and Mechanical system. This has changed and there is movement to move the definitions under a revised version of Machine.
Please take a look:
- Machine, Machine (mechanical), and Mechanical system
- Linkage (mechanical)
- Four-bar linkage
- Six-bar linkage
- Kinematic pair
- Screw axis
- Mechanism (engineering)
- Mechanical advantage
- Overconstrained mechanism
- Burmester’s theory
- Instantaneous center of rotation
- Screw theory
- Dual quaternion
- Virtual work
Anyone may edit Wikipedia, and it is intended to allow user communities to maintain the quality of particular sets articles. It is important that we take this opportunity because Wikipedia is an important resource to our students.
I am pleased to say that the second edition of my book, Geometric Design of Linkages, is now available, and I have to express my sincere gratitude to my co-author GimSong Soh, who helped make it happen.
You can find more information at the Springer Verlag web-page, GDL on Springer.com.
It is also already on Google Books, you can see it at the link GDL on books.google.com.
This is a draft of my editorial on 21st Century Kinematics for the Journal of Mechanisms and Robotics. It is a follow-up to my previous editorial on Kinematics, Polynomials and Computers. I would welcome your feedback.
Select this link to the .pdf of Kinematics, Polynomials, and Computers–A Brief History, which is a summary of the history of the kinematics of mechanisms and robotics with a focus on the challenge of solving the polynomial equations that arise in their study. It is a draft of my February 2011 editorial for the ASME Journal of Mechanisms and Robotics.
***Update*** This version has a correction to references  and .
Ilian Bonev maintains bibliography and patent databases on parallel mechanisms and much more at ParallelMIC. Access it at the link http://www.parallemic.org/
The basic properties of robots can developed by studying planar serial chains. Select this link for my notes on elementary robotics:
A copy of my notes on DC motor torque and power can be downloaded at the link:
The basic principles of DC motors are presented by Joe Wolfe of the University of New South Wales (Sydney, Australia) at the link:
Northwestern University (Chicago, Illinois) presents the basics of a DC motor in the Wiki page:
Joseph Klann provides a useful comparison of the leg designs for his Mondo Spider and Theo Jansen’s Strandbeest at the link: http://www.mechanicalspider.com/comparison.html
This link may be unreliable so here is an interesting article comparing the leg designs: Mechanical Spider Using Klann Mechanism
This is a youtube video prepared by William Thielicke that illustrates the two leg mechanisms.