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Motor definitions and more
Minarik Corp. (a motion control/automation manufacturer and distributor) has redesigned their website to offer general and helpful information. From the glossary page at www.minarik.com/support.html:
Four quadrant: This term refers to a drive's ability to control the velocity and torque of a motor in either direction of rotation. The direction of torque can be in the opposite direction of the velocity for applications requiring braking or deceleration. Single-quadrant drives, on the other hand, only produce torque and velocity in the same direction of rotation.
Motion control site
AC Technology of Uxbridge, Mass. still hosts its site at www.actechdrives.com. However, the company has launched a new website at www.actech.com. Why? Over the last couple years, the company has evolved from specializing in variable speed drives to providing a comprehensive range of motion control products and services.
Learn by example
Bimba Manufacturing of Monee, Ill. hosts a new Solutions Shop microsite at www.bimba.com/solutionshop. At the site, visitors can search by industry or application type and download printable PDFs of sample applications.