Abstract
Voice-Based Control of a DC Servo Motor
Highlights
MATERIALS AND METHODSDC servo motors plays an important role in many engineering applications
It was observed that the DC motor changes direction of rotation when the amplitude of sound reaches a value between (3.5- 4 volt)
The sound signal was converted to an electrical signal, amplified, rectified and applied to a DC motor via a microcontroller
Summary
MATERIALS AND METHODSDC servo motors plays an important role in many engineering applications. Engineers always search for an efficient and easy way to control these motors. This is normally carried out by varying the amount as well as the polarity of the applied voltage (Silva, 2005). Pulse width modulation is often used to control DC motors (Bishop, 2002). Another interesting alternative to control motor is through voice. Voice-operated control have been applied to different applications from medical field like surgical devices (Reichenspurner et al, 1999) to pc functions such as cursor movement (Harada et al., 2008), keyboard (Manaris et al, 2001) and in home applications through sound activated switches and painting (Harada et al, 2007). Authors attemps to use voice loudness’ parameter to control both the speed as well as the direction of a DC servo motor
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