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. 2015 Jul 8;15(7):16484–16502. doi: 10.3390/s150716484

Figure 16.

Figure 16

(A) Block diagram of the IR LED position tracking system characterized by moving by hand one IR LED (flickering frequency of 1 kHz) placed 30 cm above HyperCube; (B) experimental recording of the position tracking along the X direction versus time. The DC motor dynamics in charge of moving HyperCube along the X axis was a bit too slow to follow faithfully the quick variations of the reference input signal; (C) experimental recording of the position tracking along the Y direction versus time; (D) error of the IR LED position tracking. Note that the absolute value of the position error never exceeds 10 cm.