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Linear AC Motors
The first linear motor was conceived by Wheatstone more than 100 years ago. But large air gaps and low efficiencies prevented linear motors from being widely used. Though they still have relatively large air gaps, linear induction motors are increasingly chosen for material-handling applications...
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Straighten up and go linear
Economical motor sizing for peak loads Linear servomotors from MTS Systems have ironless cores permitting up to 10 Linear servomotors are available in either dual- or single-row magnet configurations, with track lengths as long as 72 in. Until a few years ago, designers looking to power a linear...
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When to go Linear
Optical or magnetic linear encoders handle high-res needs in dirty jobs. Magnetic-based linear encoders combined with linear guides and motor stages, like those used on this linearmotion-platform, offer direct measuring and control systems that are simple, accurate, and handle contaminants well...
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A Finer Control of Linear Motion
A Finer Control of Linear Motion For precise automated positioning, think stepper-motor-based linear actuators. Here are a few terms found in common stepper parlance: are the electronic components required to run stepper-motor systems. This includes power supplies, logic sequences, switching...
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Straight talk on linear actuators
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Hybrid Linear Actuators: Technical Overview
Converting the rotary motion of a stepping motor into linear motion can be accomplished by several mechanical means, including rack and pinion, belts and pulleys and other mechanical linkages. All of these designs require various mechanical components. The most effective way to accomplish...
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Straight talk on selecting linear actuators
New technology in linear actuators, antibacklash techniques, and piezo motors helps designers field high-precision motion equipment. Linear actuators come in a variety of shapes and sizes, with variable stroke lengths and a range of load capacities. Depending on type, electromechanical linear...
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Understanding mechanical limitations of linear actuators
In many cases it is essential to understand the mechanical limitations of an actuator to successfully apply linear-motion devices. The following information provides an overview to help in understanding the nuances and limitations of linear actuators. Accuracy needs to be considered from two...
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Linear-Measuring System Saves Space
mm not accurate enough for machinetool applications. Direct-measurement, linear-displacement systems are a step up. In these devices, a sensor reads position from a scale along the entire length of the linear axis. Combined with numericaldisplacement interpolation, the units deliver positioning...
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Increasing Rolling Contact In Linear Guides
This shows a double-sided way with two single-sided bearing blocks. Friction-type linear bearings with flat sliding surfaces provide high load capacity and stiffness between bearing surfaces. Unfortunately, they also exhibit the stick/slip phenomena caused by the difference between static...