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公开(公告)号：US07001151B2
公开(公告)日：2006-02-21
申请号：US10708417
申请日：2004-03-02
IPC分类号： F01D5/18
CPC分类号： F01D5/20
摘要： A tip cap for a turbine blade. The tip cap may include a HS-188 sheet material with a thickness of less than about 0.079 inches (about 2 millimeters) and a number of holes positioned in the sheet material.
摘要翻译： 涡轮叶片的顶盖。 尖端帽可以包括厚度小于约0.079英寸（约2毫米）的HS-188片材和位于片材中的多个孔。
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公开(公告)号：US5498947A
公开(公告)日：1996-03-12
申请号：US239402
申请日：1994-05-05
申请人： John Z. Wang , Timothy S. T. Lee , Bairu L. Wong
发明人： John Z. Wang , Timothy S. T. Lee , Bairu L. Wong
CPC分类号： H02M7/529
摘要： A waveform synthesizer includes a data memory, an address manager, an interface and a pulse generator. The data memory has a pulse-width value storage for storing values obtained from sampling a low frequency periodic waveform at a high sampling rate. These values stored in the storage can be scaled in response to a requested magnitude by a scaler within the data memory, thereby generating a look-up table with a series of addresses. The address manager includes an address generator and an address incrementer. The address generator generates address codes for accessing the look-up table through the series of addresses. The address incrementer then adjusts the magnitude of the address increments in response to requested frequency input from the interface. The address increments are proportional to the frequency so that when the requested frequency is high, the address increments are large and more addresses are skipped over between retrieve operations. The pulse generator is provided to convert the retrieved values into pulse trains. The typical application of the waveform synthesizer is to drive an AC motor.
摘要翻译： 波形合成器包括数据存储器，地址管理器，接口和脉冲发生器。 数据存储器具有用于存储以高采样率从低频周期波形采样获得的值的脉冲宽度值存储。 存储在存储器中的这些值可以响应于数据存储器内的缩放器所请求的大小而被缩放，从而生成具有一系列地址的查找表。 地址管理器包括地址发生器和地址递增器。 地址生成器生成用于通过一系列地址访问查找表的地址代码。 然后，地址增量器响应于从接口输入的请求频率来调整地址增量的幅度。 地址增量与频率成比例，因此当所请求的频率高时，地址增量很大，并且在检索操作之间跳过更多的地址。 提供脉冲发生器以将检索到的值转换成脉冲串。 波形合成器的典型应用是驱动交流电机。
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