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This paper gives tire pressure real time monitoring system based on ZigBee. The pressure sensor and RF(Ray Frequency) emitter are installed in automobile tire. The collected data are transmitted to the receiver installed in an automobile by wireless communication channels. Fast CRC algorithm with half bit saves storage units and reduces RF communication error rate greatly, this paper analyzes and...
Tire-break-avoiding is very important for safe driving in a super highway. Therefore the tire pressure monitoring system (TPMS) is attracting a great deal of interest from researchers and engineers. This paper presents a new kind of TPMS scheme, introduces the selection of main chips and the principle of the system. Three key issues of the system are discussed: the design of antenna, realization of...
Large parallel network wind turbines generate power by transfer torsional power, which is captured by wind shroud and accelerated by driving chain, to electric machine rotor. The drive system of variable speed wind turbine mostly uses flexible connection. That kind of connection adjusts exciting current and operating condition when wind speed and rotary speed change. Thus, it is one of the main reasons...
Pitch-regulated mechanism servo of wind turbine system is a slow time-variable nonlinear system. According to the requirement of the 1 MW wind turbine with variable speed and constant frequency, the parameters of its PID controller need to be learned or adjusted at real time. Therefore, we design this neural net PID controller based on the Hebbina supervised learning algorithm to realize the self-study...
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