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3. Linear motor dimensioning

Introduction

The choice for the right linear motor size depends on the requirements of your positioning application, espe-

cially the worst case requirements. These requirements can be modelled and translated in some characteristic

parameters, such as time, maximum speed, mass of load, inertia and friction. By means of a kinematic and

force analysis these parameters can be linked to typical motor parameters, like peak force and continuous

force. On base of the calculated values an appropriate motor size is to be selected. In addition the appropriate

servo-amplifier can be chosen.

Below a case is worked out as a kind of finger exercise. Understanding this case requires basic knowledge of

some physical laws and principles, especially kinematics and dynamics.

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Beckhoff AL2000 Application Manuale Utente Pagina 20