Machine Design

Linear actuators get a servo look

Vice President Copley Controls Corp. Canton, Mass. Historically, industry has depended on ball screws, belt drives, and pneumatic mechanisms for automation’s positioning tasks. But the rising demand ...
Just Auto

Seat assembly with percussive massage using linear actuators

A recently filed patent (Publication Number: US20230311734A1) describes a seat assembly that incorporates a percussive massage feature for the seated occupant. The seat assembly includes a seat frame ...
Electronic Design

Low-Cost Linear Actuators Use ÒMemoryÓ To Replace Small Motors

Manufactured using shape memory alloys (SMA), a class of materials developed about 50 years ago by Raychem, NanoMuscle Actuators are designed to replace traditional small motors and solenoids in ...
EDN

Using PWM servo amplifiers in noise-sensitive applications

A motor-drive servo amplifier's output voltage has a fundamental frequency and amplitude that corresponds to the motor speed, torque, and number of motor poles. PWM amplifiers, by their nature, also ...