R.L. Peiris

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Map building and obstacle detection are basic tasks in mobile robot navigation. In this paper we present a probability based solution for map building which utilizes time of flight information from an ultrasonic sensor. In contrast to most of the available map building systems, this uses a single ultrasonic sensor, mounted on a rotating shaft. Discrete(More)
Variable speed drives (VSD) a.k.a an inverter in the market today mainly use application specific integrated circuits for the construction. These IC's are capable of generating PWM signals once the required frequencies are input to the device. The commonly used general purpose PIC microcontroller is an effective and a much cheaper substitution to construct(More)
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