摘要：对于现有的burst Mode异步控制电路综合方法而言,由于在状态归约与赋值阶段需要进行完备的状态空间搜索,面临状态空间爆炸问题,因此仅仅适用于中小规模控制电路。为了提高电路的综合规模,使得burst Mode异步控制电路走向实用化,提出了一种新的大规模burst Mode异步控制电路的综合方法:利用Burs tMode状态机所对应有向图的有向回路集合对状态机进行分解,得到相互独立的子状态机;对各子状态机进行调整,采用请求/应答信号实现相应子状态机之间的四段握手通信;设计接口状态机解决相应子状态机之间的仲裁问题。通过实例比较可知,该方法可以大幅度地提高综合规模,降低综合复杂度,减少综合时间。

摘要：This paper describes in depth the design and application considerations of a computer based measurement system enabling 1 MS/s simultaneous sampling of 47 hydrophones for cross sectional recordings of echolocation beams of toothed whales (Odontocetes). An earlier prototype version of the system has previously only been presented as a brief proof of principle that did not offer a complete description of the software and hardware solution. Crucial hardware and software design considerations of the further developed system include the re-arm times of the burst mode sampling and the dual-core distributed execution of the software components. The rearm time was measured to 283 μs, using a 550 μs long sample window around each click. This enables burst mode sampling of clicks with an inter-click interval as short as 833 μs. It is shown through both synthetic benchmark tests of the system and through field measurements of bottlenose dolphins (Tursiops truncatus) and a beluga whale (Delphinapterus leucas) that it is capable of acquiring, analyzing and visualizing data in run-time. It operates effectively also in highly reverberant surroundings like concrete pools and shallow waters. burst mode sampling allows the system to block reflections with 0.3 - 0.5 m longer propagation paths than the direct path. It is suggested that the system’s compliance to reverberant recording sites makes it valuable in future dolphin echolocation studies.

摘要：介绍射频控制的重要组成部分:RFAD(射频A/D控制信息定时发送器)。分别阐述了它所需完成的三大基本功能:定时发送射频控制信息,数据采样时钟分频,APC-burst发送模式的设计方案以及用Verilog的实现方法。

摘要：传统硬开关电路影响效率和可靠性的同时,对其他设备的电磁干扰也较大,软开关则可解决上述问题。文中设计了高效率400W半桥谐振充电机的主电路和控制电路,给出了主变压器和谐振电感,谐振电容的参数计算,轻载实现burst mode,减少空载损耗,最后给出了试验结果、仿真波形和实验波形。

摘要：萨莉就读于一所艺术大学已有一年了,像大多数学生一样,她没有多少钱。不久就是她妈妈的生日了,她想给妈妈买一件漂亮、实用但又不太贵的礼物,但不知道能买什么……