Then the control system for boring the non - cylinder pin hole of piston was developed , whose main function modules including displacement detection , temperature detection for thermal deformation compensation , constant current power and central control unit 然后研制了活塞异形销孔加工控制系统，包括主控、位移检测、热变形补偿温度检测和恒流源驱动等功能模组。
Based on the analysis of the analog control method commonly used now , a digital control system is proposed using method of " constant current and temperature control " and the advanced pid controller with integral separated is designed 在总结目前常用的sld光源的模拟控制方法的基础上，本文采用了“恒流源+温控”的数字控制方案，并且设计了改进的积分分离型数字pid控制算法。
At last , it presented a way of designing a 3kw sinusoid current supply control system based on tms320lf2407a digital signal processor , and carried out the control method talked above and acquired good performances 本文最后以数字信号处理芯片tms320lf2407a为核心设计了交流稳流源数字控制系统，完成了对3kw交流稳流源试验装置的控制，实现了上述控制策略，取得了良好的控制效果。
The hardware system includes power supply circuit , clock reset circuit , jtag model building circuit , decoding circuit , memory interface circuit , man - machine interface circuit and numeric control constant - current source interface circuit 硬件系统主要包括电源电路、时钟复位电路、 jtag仿真接口电路，译码电路、存储器接口电路、人机接口电路、 adc转换电路和数控恒流源接口等。
This dissertation presents a controllable and programmable ac current source with high stability on both frequency and output current , which consists of a pfc rectifier and a spwm full - bridge inverter . the apparatus is mainly applied to test the heat characteristics of breakers 本论文所研制的稳流源是一种恒频、恒流的交流电流源，由pfc整流器、 spwm全桥逆变器组成，主要用于断路器的热特性测试。
This method utilizes near - field data to determined an equivalent magnetic current source over a fictitious surface which encompass the em radiation source . this magnetic current , once determined , can be used to ascertain the near and the far field 将近场的测量数据用来确定一个等效磁流源，该等效磁流源位于包含电磁源辐射口面的假设平面上，当确定了这个等效磁流源以后，利用它计算出辐射源的近区场和远区场。
The design of the main circuit and the calculation of the parameters of the components are introduced in detail . the experimental results including data and waveforms of each sub - circuit of the system are given . the operation principle , the current source model and control strategy are described 文中介绍了稳流源主电路、控制电路的设计过程，详细讨论了电路各部分参数的设计，给出了各部分电路的实验波形和结果。
Abstract : a design method of using gal to make a constant current source is introduced ， proving a new method of current stabilization by means of driving regulated transformer by a controlling device . experimental results are given to demonstrate effectiveness of the method 文摘:主要介绍以可编程门阵列器件构成恒流源核心控制电路的设计思路，通过机电自控装置驱动可调变压器实现新的稳流方法，实验证明这一方法是可行的。
To improve the performance of the system , some methods are introduced , such as photoelectric brightness modulating , amplification of the photoelectric ac signal and filter design . the circuitry of the demodulator is also presented . this work lays solid foundation for the future system integration 最后，介绍了数字式加速度计的参考电路设计，其中重点介绍了数字式再平衡回路的设计，包括脉宽调制、恒流源、极性开关等电路的设计。
The hardware composes of several parts such as human - machine interface , analog - to - digital converter , memory interface , digital control power . the software functions as data collection , disposal and output . the system has characteristics of speediness , high precision and automatism 硬件系统是以tms320c31为核心的电路，主要包括人机接口部分、模数转换器部分、存储器接口部分、数控恒流源等，软件主要实现数据采集、处理和数据输出等功能。
