Hi. Could anybody suggest about sites where can I start study linear
motion system design. I'm looking for information about design outline
of linear motion system. Another issue interesting me is routine of
choice of electrical motor. For which application can I choose servo or
step motor, AC or DC etc. So I'm looking for outline for design linear
motion system with calculation examples.
Quick answer will be appreciate.
I don't know about sites (did you try Google?), but choosing a motor is
greatly dependent on the application.
AC motors: Good for constant speed applications, think machine tools. In
order to vary the speed, drivers can get expensive.
DC servo motors: Speed and Position control applications. Relatively
Linear motors: Excellent for linear motion where accuracy is very
important. Integrated linear guides and motors. Motors and drivers very
Stepper motors: Good for open loop control. Low cost. Cheap drivers.
Possibility of losing steps (and therefore position of affecter) due to
For linear motion, servo and stepper motors will need a system for
converting rotational to linear motion. This can take the form of power
screws, belts, gears, etc. This will be the most critical part of the
system. If this subsystem is not designed well, the effort put into
controlling the motor will be for naught.
Are you designing a system with limited funds? Will you have components
made or are you going to use off the shelf parts? If accuracy is not
critical, a lead screw and a stepper motor is a very effective combination.
I hope this helps.
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