Jun
28

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Schneider Electric’s Modicon M580 High End Programmable Automation Controllers (PACs) incorporate 16-MB Magnetoresistive RAM (MRAM) from Everspin Technologies to boost data-backup capabilities.

FAQ: How do programmable automation controllers (PACs) handle analog I/O and related controls?

By Steve Meyer || Analog inputs and outputs are generally associated with sensors. These in turn are the key to controlling real-world processes. So depending on the speed…

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Jun
27

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New Compact Encoders for OEM Designs

The new Pittman E21 family of 21mm optical incremental encoders satisfy the demands of volume OEM precision-motion control applications. The E21 represents a huge improvement over its predecessor…

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Jun
27

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Sensorless step-motor stall detection uses tracking of back EMF induced by rotor motion — leveraging the fact that back-EMF voltage proportional motor-rotor speed.

FAQ: What is closed-loop stepper motor control with step-loss compensation?

Closed-loop stepper-motor control with step-loss compensation is a common performance-boosting algorithm for stepper systems. In one prevalent form of step-loss compensation, an angle sensor or encoder tracks the…

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Jun
24

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FAQ: How do I pick between rotary and linear encoders?

Edited by Zak Khan || It may seem as though linear encoders and rotary encoders have strictly defined (and maybe even mutually exclusive) applications. Prevailing logic is that…

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Jun
23

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bearings

igus motion plastics car ends 20,000 mile tour across North America

For nearly a year, the igus motion plastics tour has traveled across North America, visiting with more than 4,000 current and potential customers in all industries at more…

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Basics + FAQs

Sensorless step-motor stall detection uses tracking of back EMF induced by rotor motion — leveraging the fact that back-EMF voltage proportional motor-rotor speed.

FAQ: What is closed-loop stepper motor control with step-loss compensation?

Monday, June 27, 2016

Closed-loop stepper-motor control with step-loss compensation is a common performance-boosting algorithm for stepper systems. In one prevalent form of step-loss compensation, an angle sensor or encoder tracks the…

3-Delta-Products-flying-shear-drive-with-controls-example

FAQ: What are programmable multi-axis controllers?

Thursday, June 23, 2016

Multi-axis controllers are controls for which the entire hardware and software structure is organized around managing complex motion. Given the compute capability of today’s PC processors, any recent…

feed-forward

FAQ: How to tune servo systems for high dynamic response?

Tuesday, June 21, 2016

The purpose of a servo control loop is to minimize error, and this is often done through the use of PID (proportional-integral-derivative) gains, which correct errors between the target…

encoder-FAQ09-feedback-incremental-stepper-motor-0

FAQ: How to use incremental encoders with stepper motors?

Tuesday, June 21, 2016

When using a stepper motor, integrating an incremental encoder is relatively straightforward. Still, there are some general guidelines to consider. Incremental encoders (like any encoder) all function as…