phantomcow2
02-11-06, 06:57 PM
I am told its different from a servo or stepper motor, and allows for high speeds. CAn somebody explain, what IS it?
Foo - What exactly is a "linear motor":
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RonH
02-11-06, 07:01 PM
Read this (http://en.wikipedia.org/wiki/Linear_motor) and this (http://www.force.co.uk/page2.html). Maybe it will answer your question.
khuon
02-11-06, 07:05 PM
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.
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.
phantomcow2
02-11-06, 07:29 PM
Oh so you dont need a leadscrew or anything to conver the rotational force into thrust? No wonder these things make serious speed
khuon
02-11-06, 10:39 PM
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.
Correct. Nothing is rotating. Your coils are lined up along a single axis. A popular application is in positioning subsystems.
iamlucky13
02-11-06, 10:43 PM
Some gear driven actuators are considered linear motors. For example, these (http://www.mcmaster.com/ctlg/DisplCtlgPage.asp?ReqTyp=CATALOG&CtlgPgNbr=0937&CtlgEdition=&RelatedCtlgPgs=922,923,924,925,926,927,928,929,930,931,932,934,935,936,937,938,939&sesnextrep=601372118062952&ScreenWidth=1024&McMMainWidth=817&ToolsetID=ToolMultiPageNav&ToolsetAct=)
slvoid
02-12-06, 01:06 AM
Here's a fine example of a "linear motor" with an external ejectable armature..
http://www.kinoweb.de/filme/Eraser/pix/era024.jpg
http://www.kinoweb.de/filme/Eraser/pix/era024.jpg