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Old 02-11-06, 07:57 PM   #1
phantomcow2
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What exactly is a "linear motor":

I am told its different from a servo or stepper motor, and allows for high speeds. CAn somebody explain, what IS it?
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Old 02-11-06, 08:01 PM   #2
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Read this and this. Maybe it will answer your question.
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Old 02-11-06, 08:05 PM   #3
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Quote:
Originally Posted by phantomcow2
I am told its different from a servo or stepper motor, and allows for high speeds. CAn somebody explain, what IS it?
Most electric motors are rotary meaning that well, they're used to provide a rotational force. A linear motor is simply a motor that provides direct translational force. Think of something like a railgun.
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Old 02-11-06, 08:29 PM   #4
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Oh so you dont need a leadscrew or anything to conver the rotational force into thrust? No wonder these things make serious speed
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Old 02-11-06, 11:39 PM   #5
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Oh so you dont need a leadscrew or anything to conver the rotational force into thrust? No wonder these things make serious speed
Correct. Nothing is rotating. Your coils are lined up along a single axis. A popular application is in positioning subsystems.
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Old 02-11-06, 11:43 PM   #6
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Some gear driven actuators are considered linear motors. For example, these
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Old 02-12-06, 02:06 AM   #7
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Here's a fine example of a "linear motor" with an external ejectable armature..

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