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A stepper motor is a simple two phase brushless synchronous motor containing a segmented magnetized rotor and a stator consisting of a prescribed number of electromagnetic coils. When energized, these coils create north and south polls that push or pull the segmented magnetized rotor to make it spin.

There are several considerations when selecting a direct drive linear actuator for a specific application, such as the required speed, force, motion profile, available physical envelope, and environmental factors. This means the chosen actuator solution must produce the load force and speed requirements, fit in the available space, and perform as required under the subjected environmental conditions of the application.

The purpose of an AGV system is efficient transportation of goods in a specified environment. The AGV system is a big investment, so it is desirable to have a high degree of utilization as well as a high ratio of deliveries per hour to get a good ROI.

A linear servo motor is a linear actuator that produces force and velocity based on the supplied current and voltage and provides a linear movement along the axis being driven.  In simple terms, a linear servo motor behaves identically as a rotary servo motor – it’s just rolled out flat and straight.

Companies working toward the consumer market have long invested in and understood the value of user experience (UX) design. A good user experience is a key differentiator in today's market, and by aligning your company to ensure that your customers get the best possible experience at every touchpoint, you are building your brand and your customer relations over the long term.

Phase margin is a measurement in the frequency domain, taken from a Bode plot, that calculates the amount of phase lag above -180 degrees at the point on the amplitude plot that crosses 0dB (gain cross over frequency).

Kollmorgen Automation is part of Kollmorgen, which in turn belongs to the NASDAQ-listed Altra Industrial Motion group. The company develops and sells products and services related to automation solutions for applications that include warehousing and manufacturing. Kollmorgen Automation has its roots in a Swedish family-owned company (NDC - Netzler & Dahlgren Co AB) that was founded in the 1960s. It has been developing AGV solutions since the 1970s.

Amplitude gain margin is a measurement in the frequency domain, taken from a Bode plot, that takes the amplitude below 0 dB at the lowest frequency point that the phase reaches -180 degrees (phase crossover frequency).

A servo drive should be selected based on the specific servo motor used in the application. The motion requirements of the driven mechanism determines the voltage and current requirements of the servo motor – the key information required when selecting a servo drive.

In simplified terms, bandwidth can be calculated as 1/(settling time) of a given step response of a servo system.

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