Herein, we present some preliminary thoughts on how to quantify into economic terms the performance of various speed control systems. The performance of a speed control system has the following three elements: reliable switching, proper coupling and high hump-speed. Unfortunately, these three elements tend to work against each other, i.e. high hump-speed is not conducive to reliable switching and proper coupling. The performance of any speed control system is a trade-off between the three elements.
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