Chuck Lewin

Founder and V.P. of Engineering
Chuck Lewin is the Founder and V.P. of Engineering of Performance Motion Devices Inc. In 1992 Lewin developed a motion control on an IC — technology to found PMD. In less than a year, the company released its first IC multi-axis motion processor with functions previously only on board-level motion control products. In 2013, the company launched a new digital-amplifier line in its drive family. Today, the company manufactures motion controls for servo, microstep, and step motors with CANbus, serial, and parallel communications — and capable of S-curves, velocity contouring, and electronic gearing as well as six-step and sinusoidal commutation and field oriented control.
Small but mighty: How motion controllers deliver smoothness, motor efficiency, and top speed
The last 20 years have seen precision amplifiers used for positioning and velocity control make major strides in power output, size, and control features. Applications such as laboratory automation, semiconductor equipment, and scientific automation make use of high-end amplifier capabilities such as field-oriented control. The cost of electronics is coming down to a point where even industries identified with basic motion needs now consider using high-end features, particularly where smoothness, motor efficiency, and top speed matter.
Short primer on torque feedforward (with video)
Can we improve performance by adding control elements external to the PID loop? Yes. Here we consider torque control and the related subject of torque feedforward — which can make systems run more smoothly and deliver better accuracy.
The story of Chuck Lewin: How one curious kid came to found a motion-control company
Many kids dream of turning their hobbies into a successful job some day. Chuck Lewin, founder of Performance Motion Devices Inc. (PMD), Lincoln, Mass., and creator of motion processors, was one such kid who made his dreams come true.
Mastering motion profiles
Motion engineers can spend hours optimizing tuning parameters in servo-based systems, and still not get the performance they want.
The difference between PC-based, embedded, and distributed motion architectures
A brief overview of the different motion control architectures, and their advantages and limitations, can help designers find the best solution for a particular job.
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