Re: [CAD_CAM_EDM_DRO] More about motors?

Looks like servo motors are IT then if I want an ACCURATE system and
steppers if I want less cost.

From what I've found based on the sources I've found here, it looks like I
can design for either using the same motor mounts.

Thanks, Jon and the rest of you for the help.

>Absolutely different. Stepper motors are generally constructed with
>permanent magnets in the rotor, and many field poles in the stator.
>When power is applied, the stator windings attract the rotor magnets,
>and make the motor move a very small diistance. Common motors used
>in positioning systems have 200 steps per revolution.
>
>Servo motors come in several varieties, DC brush is the oldest, and later
>types are DC brushless and AC flux-vector. These motors are designed
>to operate over a wider range of speeds than steppers, and are capable
>of extremely smooth motion even at low speeds in closed-loop servo
>drive systems. They are generally capable of much higher torque/power
>per volume and size than steppers.
>

>Servo motors are capable of higher speeds than steppers in most cases.
>More power and torque are available from servo motors for the same
>size and weight. Servo motors generally run much cooler than steppers.
>More precise motion can be obtained from a servo system.
>
>On the other hand, open-loop positioning systems can be made extremely
>cheaply with steppers, at the expense of lower speeds, less precision
>and the possibility of losing steps.
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