ID 原文 译文
1463 认知用户先将非线性功率优化问题转换为几何规划凸优化问题，再使用梯度法完成分布式发送功率优化; Secondary users firstly transform the nonlinear power optimization problem into the geometric programming convex optimization problem, then implement the distributed transmitting power optimization through gradient method.
1464 认知基站和认知用户交替优化，实现网络效用最大化。 The maximum network utility is re-alized via the alternating optimization between cognitive base station and secondary users.
1465 数值仿真显示，同只优化认知用户功率的上行功率控制算法相比，认知基站和认知用户联合优化的上行功率控制算法不仅能得到更大的网络效用值，而且对主用户的干扰具有鲁棒性。 Numerical simulation results show that compared with the existing uplink power control algorithm which only optimizes the powers of secondary users, the pro-posed algorithm can not only obtain larger network utility value but also be robust to the effect of the interferences from theprimary users.
1466 为提高光电轴角编码器的分辨力，提出一种新型莫尔条纹信号细分方法并建立基于 FPGA 的光电位移信号倍频系统。 In order to improve the resolution of photoelectric shaft angle encoder, a method of subdividing high fre-quency-doubling Moire fringe signal is proposed and a frequency-doubling system of photoelectric potential shift signal basedon FPGA is established.
1467 根据理想莫尔条纹光电信号的数学模型，利用多倍角正余弦信号的函数性质，将原始莫尔条纹信号推导为 n 倍频的高阶信号; According to the mathematic model of ideal Moire fringe photoelectric signal, the original Moirefringe signal is deduced into n-fold high-order signal by using the function property of multi-angle sine-cosine signal.
1468 由幅值细分理论，离线建立基于高阶正余弦信号的高分辨力幅值细分查找表;根据增量式、绝对式光电编码器的不同功能，分别阐述了应用该幅值细分查找表实现编码器高分辨力的倍频技术;同时又指出本文细分方法应用的约束条件。 The different functions of the encoder are described, and the frequency doubling technique of high resolution by using the ampli-tude subdivision lookup table is described respectively.
1469 最后，以直径为 40mm，分辨率为 2500P/R 的欧姆龙 E6B2-CWZ6C 增量式光电编码器为实验对象， Finally, an Omron E6B2-CWZ6C incremental photoelectric encoderwith a diameter of 40 mm and a resolution of 2500 P/R is taken as the experimental object.
1470 在转速范围 200 ～ 3000rpm 的同步电机驱动下，编码器输出波形频率范围约为 8。3kHz ～ 125kHz，在基于频率为10kHz 的模拟输入信号下，采用本文细分方案设置四倍频设计实验，该系统可以快速将频率增加到原来频率的 4 倍; Driven by a synchronous motorwith a speed range of 200 ～ 3000 rpm, the output waveform frequency range of the encoder is about 8. 3 kHz ～ 125 kHz. Un-der the analog input signal with a frequency of 10 kHz, the subdivision scheme is adopted. In the quadruplicated frequencydoubling experiment, the system can increase the frequency to 4 times of the original frequency.
1471 同时，基于 4 倍频原理设计了 128 倍频实验，并进行实验验证，同样得到该系统可以快速增加到输入频率的 128 倍。 At the same time, based onthe principle of 4 times frequency, the 128 times frequency experiment is designed and verified by experiments. The systemcan also be quickly increased to 128 times the input frequency.
1472 该设计方法及系统与传统细分方法相比较，具有开发周期短、集成度高、模块化、速率快等特点。 Compared with the traditional subdivision circuit, the design method and system have the characteristics of short development cycle, high integration, modularization and simple modifica-tion.