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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.

A servo drive is an electronic device that is part of a closed loop system, producing current and voltage to rotate a servo motor. The closed loop system includes the servo drive, servo motor and feedback device, and is commanded from an analog or digital signal.

A stable servo system is essential for optimal machine performance, durability, safety, and consistent machine performance, which improves overall machine operation. Servo systems operate in various degrees of stability, with a fine line between stable and unstable. Changes in the mechanical system over time or machines with varying loads can move the system from a stable to unstable operating condition. This article unveils four key values that determine the stability level of a servo system.

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

Bode plots have existed since the 1930’s when Hendrik Bode devised a way to display gain and phase-shift plots in the frequency domain. Today, to produce a detailed frequency response plot that reveals the unique fingerprint of a servo mechanism in the frequency domain is as simple as pressing a computer key. This paper discusses five key items in a Bode plot and what they reveal about the machine.

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