Motor/Drive Selection
1. Introduction
The selection process often highlights difficulties in three areas. First, as we have discovered in the preceding chapters, there is a good deal of overlap between the characteristics of the major types of motor and drive. This makes it impossible to lay down a set of hard and fast rules to guide the user straight to the best solution for a particular application. Secondly, users tend to underestimate the importance of starting with a comprehensive specification of what they really want, and they seldom realize how much weight attaches to such things as the steady-state torque–speed curve, the dynamic performance required, the inertia of the load, the pattern of operation (continuous or intermittent), ...
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