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螺钉柔性装配中位姿偏差的光纤检测技术 总被引:2,自引:0,他引:2
介绍一种用于机器人螺钉柔性装配的螺钉位姿偏差的光纤传感技术,具体包括传感机理、信息的探测以及提高传感测量范围和实时处理能力的方法等内容,最后简要介绍其应用结果。 相似文献
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This paper presents the results of a computer-simulation study of a (4,12) circular signal set for use over regenerative satellite links. The signal has a 16-ary symbol alphabet. The satellite transponders and each of the earth-stations use either travelling-wave-tube amplifiers (TWTAs) or solid-state power amplifiers (SSPAs) for high-power amplification. Several different earth-stations are assumed to have simultaneous access to a given regenerative satellite, in an arrangement of frequency division mulitple access (FDMA). Thus, adjacent-channel-interference (ACI) can be introduced into the wanted signal by the immediately adjacent channels. The performances of the signal are compared to those of a 16-ary differentially encoded-quadrature-amplitude-modulated (16-ary DEQAM) signal with a rectangular signal set and the results are used to determine the preferred signal set for spectrally efficient transmission over satellite links. It has been shown that, with TWTAs used for high-power amplification and in the absence of ACI, the circular signal set has an advantage of about 3 dB over the rectangular signal set, at the bit error rate of 10?4. While in the presence of the ACI, the advantage is 2 dB. With SSPAs, the respective advantages become 0·7 and 0·5 dB. 相似文献
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分光测色仪中的光电转换器运用先进的光电传感技术(光电二极管阵列),来进行光信号的采集。其驱动脉冲由复杂可编程逻辑器件(CPLD)搭建,后端采用高精度的模/数转换器和高速的32位微处理器构成数据处理系统。同时为解决脉冲氙灯光源强度不一致的问题,采用了双光电路同步并行触发工作的结构。介绍了该系统的软硬件设计,性能评价以及应用领域。 相似文献
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介绍了一种GaN大功率高线性固态发射机。利用GaN HEMT的高功率特性,结合新型波导魔T低损耗功率合成的特点,在7.9~8.4GHz范围内实现了连续波饱和输出功率大于200W,效率大于20%。此外,应用新型模拟预失真方法提升功放的线性化指标,在额定输出功率下三阶交调指标(IMD3)优于-30dBc,改善功放的线性度11dB。该发射机具有输出功率大,线性度好等优点,整体性能优于国外同类产品。 相似文献
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研制了一种用于X射线探测的阵列探测器SSPA器件,进而研究了适用于该器件的数据采集电路,设计试验了此阵列探测器及其数据采集电路应用于X射线计算机层析成像(即X-CT)的可行性,初步试验结果表明,该:X射线的探测方法是可行的,这为工业X-CT无损检测技术实现对X射线高分辨,高效率,低成本的探测与测量创造了条件。 相似文献