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Based on the description and analysis of Ultrasonic technique used for fouling detection, ultrasonic excitation circuits was designed. The ultrasonic excitation circuits are composed of the timer chip circuit to generate resonant wave, and high-speed MOSFET drivers to control MOSFET. The circuits produce high-voltage pulse wave with capacitor instantaneous electric discharge, and generate high-pressure...
In order to study on the structure system and the coordinated control of the underwater vehicle controlled by rudders and thrusters, the autonomous underwater vehicle (AUV) named??HaiYi-1??is developed. This paper introduces the system structure, control method, software and hardware of ??HaiYi-1??in details. And on the basis of hydrodynamic analysis of the thrusters, the dynamical model of the AUV...
According to the actual situations of economic and technical of low-grade highway in the western region, this paper followed the principle of “the low cost, easy setting, easy maintenance, maximum benefit”, and respectively analyzed and compared all kinds of common traffic safety facilities in form, function and cost. Sequentially, the paper put forward selection and setting methods of traffic safety...
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