These years more and more emphasize have been focused soft - switching control in phase - shifted zvs pwm full - bridge dc / dc converter and more research need to be made . the principles of phase - shifted zvs pwm full - bridge converter are described and analyzed 基于移相控制的零电压脉宽调制dc - dc全桥变换器是软开关控制的一个研究热点，还有许多理论问题需要研究。
We design the system circuit which is composed of emission and receiving circuit . the results of experiments show that the system can localize the magnetic sensor and it can be expected to play a roll in medical treatment after further research 在电路设计中，我们根据磁场模型的特点设计了具有自动增益和倒相控制功能的发射电路以及高放大倍数和低噪声的接收电路。
It consists of forward stage and backward stage , of which the forward stage is a single - phase boost power factor correction circuit using ic uc3854 . the backward stage main circuit is a full - bridge converter using phase - shifting control soft - switching technique 该开关电源分为前级和后级，前级为采用boost结构的单相有源功率因数校正电路，后级为采用移相控制软开关技术的全桥变换器。
Phase - shifted zero - voltage - switching pwm full bridge converter can realize zvs for the power switches with the use of the leakage inductance of the transformer and the intrinsic capacitors of the power switches , so it is used widely for medium and high power applications 移相控制零电压开关pwm全桥变换器利用变压器的漏感和开关管的结电容可以实现开关管的零电压开关，在中大功率的场合应用广泛。
Explicit description of main circuit topology , operation principle , characteristic of the circuit of the novel phase - shifted zero - voltage and zero - current switching pwm dc / dc full - bridge converter as well as the simulation analysis with the pspice software is proposed 对移相控制zvzcs下pwm的dc dc全桥变换器的拓扑结构、工作原理和电路特性作了深入的阐述，采用pspice软件进行了计算机的仿真分析。
Digital t / r module use dds ( ddfs and ddws ) technique to implement amplitude and phase weighting , it can achive transmitting beamforming in if or lower frequency by using digital method whitch realizes phase control and amplitude weighting 数字t / r组件利用dds技术实现了雷达的信号产生和幅相控制,可以在中频甚至更低的频率上用数字的方法实现幅度加权和相位控制,从而真正地实现相控阵天线发射波束的全数字控制。
The distribution of the reservoir is controlled by the depositional environment and the faces which are mainly alluvial , delta and river . determined by the diagenesis and the latter reformation , the physical property of the reservoir in general is poor , ranked as class 3 - 4 储层分布则受沉积环境、沉积相控制，主要有冲积扇、扇三角洲、河道砂等砂体，储油物性则受成岩作用及后期改造影响而较差，属级。
On the basis of the research on the phase - shift - controlled technology and the high - frequency ( hf ) link inverting technology , and the key technical problems of the novel single - phase and three - phase compounded hf link inverter for soft - switching are studied and discussed in detail 在对移相控制技术和高频链逆变技术的研究现状综述、评价基础上，对新型单相和三相组合式软开关高频链逆变器的关键技术进行了深入研究与探讨。
Compared with digital integrator composed of reversible counter , the trapezoidal formula digital integrator is utilized in integrating element of phase - lock controller , it has advantages in simple realization , fast transient response , wide lock range , insensitivity to disturbance 对锁相控制的积分环节采用了梯形公式数字积分器，与可逆计数器构成的数字积分器相比，梯形公式数字积分器具有实现简单、动态响应快、入锁范围大、抗扰动能力强等优点。
The characteristics of the full bridge series resonant converter with the separate transformer are analyzed . the resonant frequency and other circuit characteristics are discussed . the full bridge series resonant converter is analyzed by circuit simulation 对带可分离变压器的全桥串联谐振变换器的电路特性进行了分析,分析了变换器的谐振频率,利用正弦等效的方法分析了变换器的电路特性,对双极性控制和移相控制全桥串联谐振变换器进行了电路仿真。
