These Robots Crawl Into Every Nook and Cranny

The latest addition is a small crawler robot that magnetically "sticks" to metal walls and is able to move in all directions. It carries cameras, sensors and tools for inspection or maintenance work in tight pipes and on the outer hulls of tanks or ships.

Forms of Closed Loop Stepper Control

2017 - Most Popular Article - To achieve the highest performance, the stepper motor can be treated as a 2 phase brushless servo motor. Current to the motor will then be controlled as a function of the error signal just as with standard servo motors.

Encoder Selection: Speed Control

A general in depth analysis shows that the highest encoder resolutions are required for very precise speed control. The encoder resolution increases with the square of the demanded speed accuracy.

Development of Battery-Free Multi-Rotation Absolute Encoder

In recent years, there have been many demands for equipment with high productivity to have a system that retains positioning information, even after the main power supply is turned off.

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Featured Product

maxon motor’s - Exoskeleton Joint Actuator

maxon motor's - Exoskeleton Joint Actuator

A brushless DC motor solution for use in hip and knee exoskeletons. This complete joint actuation unit consists of motor, gearhead, encoder and position controller. Fitting absolute encoder directly at the joint rotation provides designers increased positioning accuracy. The unit will deliver 54Nm of continuous torque and 120Nm on a 20% duty cycle. The system can be operated on supplies between 10 and 50V DC and the actuation speed is up to 22rpm.