1) pulse density
脉冲密度
1.
A new high frequency AC discrete pulse density modulation converter was proposed for electric vehicle drive system.
提出了一种用于电动汽车电气驱动系统的高频环周波变换器,给出了电路的数学分析,介绍了变换器的工作原理和高频交流离散脉冲密度调制的控制策略。
2.
According to theory of high frequency AC pulse density modulation, the harmonic analysis approach and simulating model used in high frequency AC power distribution system of electric vehicle is proposed.
根据高频交流脉冲密度调制理论 ,提出了一种用于电动汽车高频交流功率分布系统的谐波分析方法和仿真模型。
3.
In the past pulse density adjustment means to achieve the main counter,just through the realization of analog circuit.
以往脉冲密度调节方式的实现主要通过计数器等模拟电路实现,该设计采用CPLD实现,具有控制电路简单,可靠性高等优点。
2) pulse density modulation(PDM)
脉冲密度调制(PDM)
3) high density pulse electric current
高密度脉冲电流
1.
The influence of high density pulse electric current on solidified structure of aluminum was studied, and the effect of different voltage and different capacitance on grain size of aluminum was investigated.
研究了高密度脉冲电流作用下纯铝凝固组织的变化,考察了不同放电电压和放电电容对纯铝晶粒尺寸的影响。
4) pulse density modulation
脉冲密度调制
1.
The suggested system consists of high frequency(HF) resonant inverter,HF transformer and HFAC pulse density modulation (PDM) converter.
该系统由高频谐振逆变器、高频变压器和高频交流脉冲密度调制变频器组成。
5) PDM
脉冲密度调制
1.
The paper presents the design of high performance AGC module based on pulse density modulation (PDM) technology in digital television demodulator to overcome the shortcoming of traditional AGC based on pulse width modulation (PWM).
针对传统的基于脉冲宽度调制的自动增益控制的不足,提出了一种用于数字电视解调芯片中基于脉冲密度调制的高性能自动增益控制设计方案。
2.
According to soft switching resonant theory, a novel control strategy of the pulse density modulation (PDM) for threephase high frequency AC (HFAC) cycloconverter is proposed.
根据软开关谐振理论,对三相高频交流交交变换器,提出了一种新颖的脉冲密度调制(PDM)的控制策略,并采用PDM控制策略建立了变换器的数学模型和仿真模型,分析了变换器输出波形。
3.
The principle and characteristics of PDM(Pulse Density Modulation) signal are introduced.
介绍了脉冲密度调制(PDM)信号的原理和特点,比较了基于梳状滤波和基于频域滤波的解码算法、性能和计算复杂度。
6) High density electric pulse
高密度电流脉冲
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
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