Abstract
The display/control gain exhibited by a continuous control system strongly affects the human's ability to quickly and accurately operate the system. The primary objectives of this research were to develop and optimize a variable D/C gain that improves human performance with touch tablets. This variable gain moderates the speed-accuracy trade-off problem associated with traditional D/C gains. Empirical results indicate that a lead-lag compensator increased the target acquisition rate relative to a traditional D/C gain system. Error rates were low with both systems, but were greater with lead-lag compensation than in an uncompensated system. Tablet size did not appear to significantly affect performance.
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