EDN

Timing the Commutation Channels of an Optical Encoder to a Brushless Motor

Alignment of optical encoder commutation signals to a Brushless DC (BLDC) motor could be thought of as being comparable to timing the distributor on a car engine. The distributor tells the spark plugs ...
Electronic Design

DSP-Based 20-bit Quasi-Absolute Encoder Suits Low Speed

A high-accuracy 20-bit resolution quasi-absolute encoder with DSP-based signal processing is housed in a dc stepper motor assembly, as shown in Fig. 1. Able to operate in a temperature range between ...
EDN

How to use FPGAs for quadrature encoder-based motor control applications

Precisely tracking speed, acceleration, and position of a motor's rotor is an essential requirement for many motor control applications found in everyday equipment such as fax machines, elevators, and ...
Machine Design

Comparing Encoder Technologies

Encoders are widely used in the motion control and automation industry to monitor the position and speed of motors. This information can be used by the motion control electronics to detect if the ...
Machine Design

Here Come Low-Power Encoders

The quest for energy-efficient designs has made capacitive position encoders a hot topic. • The new mantra of position encoding is low-current drain. • Capacitive encoding is a way to realize ...
Electronic Design

DSP-Based 20-bit Quasi-Absolute Encoder Suits Low Speed

A DSP design approach, including hardware and software implementation for a quasi-absolute encoder. LEE WEI YAN, Applications Engineer, Avago Technologies, San Jose, Calif. A high-accuracy 20-bit ...