Abstract
In the manual control of a dynamic system, the human controller (HC) is often required to follow a visible and predictable reference path. Using the predictable aspect of a reference signal, through applying feedforward control, the HC can significantly improve performance as compared to a purely feedback control strategy. A proper definition of a signal’s predictability, however, is never given in literature. This paper investigates the predictability of a sum-of-sinusoids target signal, as a function of the number of sinusoid components and the fact whether the sinusoid frequencies are harmonic, or not. A human-in-the-loop experiment was done, with target signals varying for these two signal characteristics. A combined feedback-feedforward HC model was identified and parameters were estimated. It was found that for all experimental conditions, subjects used a feedforward strategy. Results further showed thatsubjects were able to perform better for harmonic signals as compared to non-harmonic signals, for signals with roughly the same frequency content.
Original language | English |
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Pages (from-to) | 177-182 |
Journal | IFAC-PapersOnLine |
Volume | 49 |
Issue number | 19 |
DOIs | |
Publication status | Published - 2016 |
Event | 13th IFAC Symposium on Analysis, Design, and Evaluation of Human-Machine Systems - Kyoto, Japan Duration: 30 Aug 2016 → 2 Sept 2016 |
Keywords
- cybernetics
- manual control
- dynamic behaviour
- modeling