1) multiple frequency line tracking
多频率线跟踪
1.
The HMM based multiple frequency line tracking algorithms of work well under very low SNR,except for a high complexity of computation and for generally unnegligible quantization error.
基于隐马尔可夫模型的多频率线跟踪算法 ,能在很低的SNR环境下工作 ,但量化误差较大 ,和计算量大 。
2) frequency line tracking
频率线跟踪
1.
In this paper some effective measures to improve the hidden Markov model based multiple frequency line tracking algorithms are proposed.
提出了基于隐马尔可夫模型（ＨＭＭ）的多频率线跟踪算法的若干改进措施，着重于减少计算复杂性、提高算法的实时性，其中包括减少信号幅值实时估计的计算量和减少双频率线跟踪算法的计算量。
3) frequency tracking
频率跟踪
1.
A sampling measurement algorithm without frequency tracking based on electronic instrument transformer;
基于电子式互感器的无频率跟踪采样测量算法
2.
Current feedback frequency tracking control with matching of piezoelectric;
压电超声换能器电端匹配下的电流反馈式频率跟踪
3.
Research on the Frequency Tracking System of HF-Inverter Power Controlled by PI-DPLL;
基于PI-DPLL的高频逆变电源频率跟踪系统的研究
4) frequency tracing
频率跟踪
1.
A new method based on correlation theory and frequency tracing algorithm is presented .
针对应用虚拟仪器技术测量旋转动力机械扭矩的原理与算法进行了研究,提出一种频率跟踪基于相位差测量扭矩新方法。
2.
Through DC input voltage regulation and circuit resonant frequency tracing,approximate linear load power regulation can be realized by the power supply.
利用电路谐振产生高频高幅值的正弦波电压的介质阻挡放电电源,通过调整电源的逆变电路的直流输入电压,同时逆变电路开关频率跟踪电路谐振频率,可以实现介质阻挡放电负载功率的近似线性调整。
3.
because of bridge rectifier adopting APFC technology and inverter adopting the frequency tracing technoiogy of no phase difference, which have very important significance on effective running of power network? frequency conversion power supply and loading.
其整流器采用APFC技术 ,逆变器采用无相差频率跟踪技术 ,使输入和输出的功率因数都得以提高 ,这对电网、变频电源和负载的有效运行具有重要意
5) frequency-tracking
频率跟踪
1.
Experimental results show that the energy transmission system is capable of automatic frequency-tracking and transmission power-adjusting and has stable received energy.
报道了一种消化道微创诊疗微系统的无线体外供能装置,它主要由利用锁相环的自动频率跟踪电路和采用移相的调功电路构成。
2.
In consideration of the process of card wire heating operation,a strategy of frequency-tracking with integral action separation and DPLL(digital phase-locked loop) is employed to work out a high frequency induction heating power with 100 kHz/5 kW for on-line card wire annealing.
根据梳理机用齿条热处理工艺的要求,采用积分分离法与DPLL(数字锁相环)相结合的频率跟踪策略,设计了一台100 kHz/5 kW的高频感应加热电源,对齿条进行在线退火处理。
3.
The paper studies digital control scheme of resonance inverter frequency-tracking based on all digital phase-locked loop.
本文主要研究了基于全数字锁相环的谐振型逆变器频率跟踪的数字化控制方案。
6) frequency track
频率跟踪
1.
The 100kW inductive heat power frequency track research;
100kW感应加热电源频率跟踪的研究
2.
SCM control for frequency tracking in induct heating device;
感应加热装置中频率跟踪的单片机控制
3.
This paper proposes a control system with the nophase difference of frequency track devised on the basis of the CD4046 integrated phase locked loop.
实现了一种由ＣＤ４０４６集成锁相环设计的应用于感应加热电源的无相差频率跟踪控制系统，并就锁相瞬态性能进行了重点分析与设计，还就控制系统的相位补偿等问题进行了分析讨论。
补充资料：多线束均衡X线摄影
多线束均衡X线摄影
X线检查方法之一。以调整多个X线束曝光量的方法改进胸部细节对比的技术。MBER系统使用20个相邻的线束单元在水平方向组成扇形束，垂直方向扫描病人。每个线束单元均有各自的强度调整器和曝光检测器，后者配合电子反馈装置调节相应的调整器以使X线量不完全均匀化，使胸部均匀曝光，胸部影像记录在平面检测器上。当扫描纵隔或膈下时，调整器全部打开，以获得最大X线曝光量，扫描肺野时，仅打开约10%，这样获得的胸部影像能同时将肺野、肺纹理与纵隔及横膈遮盖区的解剖结构显示清楚，提高微小病灶的发现率。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条