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This paper presents a new type of intelligent ultrasonic power supply based on DSP and DDS, and then designed a debridement transducer. The ultrasonic power supply consist of TMS320F2812, DDS waveform generating circuit, Full-bridge inverter circuit, signal processing circuit and so on. In order to achieve frequency automatic tracking with the characteristics of high precision and fast speed, it adopted...
In order to do the deformation characteristic tests on marble of which the geostress level is above 60MPa, a set of rigid pressure plates test equipment for center hole method and an automatic servo and acquisition system is developed. It consists of power transmission system, servo load system and measurement system. This paper mainly introduces the system structure, working principle and functions...
Many of the recently proposed high performance congestion control protocols rely on an estimation of the available link bandwidths. Specially, XCP and VCP need an explicit knowledge of the link bandwidth. However, wireless networks are characterized by bandwidth variations due to the openness of air links. Experiments have clearly shown that operating over variable bandwidth wireless links can lead...
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