电路

This control system includes main control model, current detection, position sensing, fault detection and protection, serial interface. Anisomerous bridge topology structure is adopted to design the power converters and driver circuit. Double closed loop based on velocity and current is adopted to control AC-motor.

其控制电路主要包括主控模块、电流检测模块、位置传感器模块、串口电路、故障检测和保护电路等；采用不对称桥式扑结构设计了功率变换器及其驱动电路模块；采用速度和电流双闭环的形式，完成对交流电机的控制。

for carrying out a small physical volume and high reliability of the motor driving and control,by using hip4081 chip and aln hybrid integrated technology,a hybrid integrated technology h bridge circuit based on hip4081 is designed to control bidirectional circumrotation and speed regulation of the motor.by practical application,the bidirectional circumrotation/speed adjustment of motor are realized safely and reliably.the products has a small physical volume,fast heat transmission,high efficiency and can operate properly in severe environment.it can enhance the reliability of the drive circuit and the system,and adapt to both military and commercial usage.

摘 要：为了实现小体积、高可靠的电机驱动与控制，利用hip4081专用芯片和aln厚膜混合集成技术，设计一种基于hip4081的厚膜h桥电机驱动电路，完成了h桥式驱动电路对电机双向转动和调速的控制。经实际应用，该电路不仅安全可靠地实现了电机的双向转动和调速功能，且产品体积小，导热性能好，效率高；还能在恶劣的使用环境下安全工作，提高了驱动电路和系统的可靠性，适合军、民两用。

The rule of the circuit of track of our country is mainly to move the circuit of track frequently, including domestic 18 information move frequently track circuit and introduce France UM71 type and ZPW-2000 type that domesticize move circuit of track frequently.

我国轨道电路的制式主要是移频轨道电路，包括国产18信息移频轨道电路和引进法国UM71型并加以国产化的ZPW—2000型移频轨道电路。

In the new driving system, the ramped priming waveform was introduced. The simulation of the new driving system was presented.

同时提出了对视频驱动电路的改进，设计了整个视频驱动电路，增加了斜坡初始化波形的产生电路，并对电路进行了仿真分析。

Secondly,two regulatable current sources for exicitation of magenetic powder dynamic brake are studied respectively with buck and interleaving two-transistor forward topology. In the power supply with interleaving two-transistor forward topology design,simulations are implemented with Saber simulator,thus the best parameters are achieved which ensured the stability and dynamic characteristic.

二、分别用 BUCK 式和交错并联的双管正激式电路拓扑，研制了磁粉制动器的直流励磁电流源，其中对于交错并联双管正激式的电路进行了基于 Saber 的仿真，确保了电路参数的选取能够保证电路稳定性与动态性能要求。

Designing o f t he p ower c ircuit, c ontrol circuit, d riving c ircuit a nd protect circuit is discussed in this paper.

文中对所提出的电源的主电路、控制电路、驱动电路和保护电路进行了研究和设计。

A high-frequency electronic therapeutic instrument for stomatopathy is composed of power supply, high-frequency oscillator and therapeutic mode controller and technically features use of two independent stabilized power supplies, stepless regulation, and switch signal generator to control output interval and therapeutic mode switching.

本发明涉及的是一种用于口腔科的高频电子治疗仪，它是由电源电路、高频振荡电路和治疗方式控制电路组成，其技术特点是采用独立的两路稳压电源供电，并实现无级可调，设置开关信号发生电路控制治疗输出的时间间隔和进行治疗方式的转换。

The paper presents analysis and design methods of sequential logical circuit to make reader under-stand principles of the basic trigger,master—slave trigger and the edge tripple based on knowing the combina-tional logical circuit design.

摘 要：介绍了时序逻辑电路的分析和设计方法，使读者在了解了组合逻辑电路设计的基础上，了解基本触发器、主从触发器和边沿触发器原理，能够分析、设计以触发器为核心元件，且与电路初态有关的时序逻辑电路。

In the hardware circuit of the inverter, the check and protection circuit is of same importance with contrary circuit, commutated circuit and wave filter circuit.

本文来自2003年第11期&经验交流&上，已经被阅读过2142次摘要：在变频器的硬件电路中，除逆变电路、整流、滤波电路之外，检测与保护电路同样是至关重要的。

In the hardware circuit of the inverter, the check and protection circuit is of same importance with contrary circuit, commutated circuit and wave filter circuit.

在变频器的硬件电路中，除逆变电路、整流、滤波电路之外，检测与保护电路同样是至关重要的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。