Faster Servo-Loop Enclosures Reset The Accuracy Bar

April 14, 2003

Because models in the new series of Flex-Mount commutating-motor feedback encoders use the same physical mounting as resolvers, they provide better accuracy of up to 2048 pulses/revolution and real-time feedback for faster servo loops. A user can pull a resolver off the motor and drop in an F10, F15, or F21 encoder (depending on servo ring size) without changing any of the encoder-mounting design or hardware. The servo ring provides high tolerance to motor shaft movement and 360° of adjustment to align the signal outputs to the shaft position. Accuracy, typically 10 arc-minutes, narrows to just 2.5 arc-minutes. With a digital encoder output from the start, there's no delay. Encoder data rates up to 300 kHz allow the motor to accelerate more quickly and the servo loop to respond faster. Diameter sizes range from 1.25 to 2.06 in. Flying leads facilitate a low-profile installation. Prices start at $120. OEM pricing is available for high volumes. Units are available now.

Danahar Controls
www.dancon.com • (800) 430-2153

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About the Author

Roger Allan

Roger Allan is an electronics journalism veteran, and served as Electronic Design's Executive Editor for 15 of those years. He has covered just about every technology beat from semiconductors, components, packaging and power devices, to communications, test and measurement, automotive electronics, robotics, medical electronics, military electronics, robotics, and industrial electronics. His specialties include MEMS and nanoelectronics technologies. He is a contributor to the McGraw Hill Annual Encyclopedia of Science and Technology. He is also a Life Senior Member of the IEEE and holds a BSEE from New York University's School of Engineering and Science. Roger has worked for major electronics magazines besides Electronic Design, including the IEEE Spectrum, Electronics, EDN, Electronic Products, and the British New Scientist. He also has working experience in the electronics industry as a design engineer in filters, power supplies and control systems.

After his retirement from Electronic Design Magazine, He has been extensively contributing articles for Penton’s Electronic Design, Power Electronics Technology, Energy Efficiency and Technology (EE&T) and Microwaves RF Magazine, covering all of the aforementioned electronics segments as well as energy efficiency, harvesting and related technologies. He has also contributed articles to other electronics technology magazines worldwide.

He is a “jack of all trades and a master in leading-edge technologies” like MEMS, nanolectronics, autonomous vehicles, artificial intelligence, military electronics, biometrics, implantable medical devices, and energy harvesting and related technologies.