环节器

A novel two-amplitude control strategy for active clamped resonant DC link inverter is presented.

提出了一种新的有源箝位谐振直流环节逆变器的双幅控制策略。

The mensuration of target coordinate plays a key role in warfare of the air defence and antimissile ,the detection of target can be improved greatly by floating platform observation.

在防空反导作战中，目标坐标的有效探测是关键环节，通过浮空器观测目标可以有效地提高探测效果。

It is a very important step to establish a bench rapid aging test cycle which should be comparable with the road running test.

如何对安装在摩托车上的催化转化器进行可靠性考核，是很关键的环节。

A resistance is connected to the rectifier bridge to limit the state value offault current.

本文对普通桥式超导限流器进行了改进，在桥路中增加了限流电感的去磁环节，以达到限制短路电流稳态值的目的。

Actuator is automatic control system, the operation is based on the role of control signal controller is operated by the size of the medium change, you will be charged variable required on maintaining.

执行器是自动控制系统中的操作环节，其作用是根据控制器送来的控制信号改变所操作介质的大小，将被控变量维持在所要求的数值上。

So how to make it durable and economical is our purpose - optimization of casing size and coadjutor layout.

固井是油井建井过程中的一个重要环节，而套管设计又是其中的一个关键问题，如何让其满足强度要求而又尽可能的经济，即追求套管尺寸和扶正器布局的最优化是我们最追求的目标。

The fixation of oil-well establishment is an important thing , and the design of casing is also crucial . So how to make it durable and economical is our purpose - optimization of casing size and coadjutor layout .

固井是油井建井过程中的一个重要环节，而套管设计又是其中的一个关键问题，如何让其满足强度要求而又尽可能的经济，即追求套管尺寸和扶正器布局的最优化是我们最追求的目标。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

Study on the bore sequence planning of tunnel-rock-drilling robot is the prerequisite step to robotize rock-drilling equipment, as well as the embodiment of intellectualized tunnel-rock-drilling robot.

凿岩机器人孔序规划的研究是实现凿岩设备机器人化的关键环节，也是凿岩机器人智能化的重要体现。

The mathematical model of direct steam heater control loop based on mechanism analytical method was built.

以直接蒸汽加热器为研究对象，通过机理分析法建立了直接蒸汽加热器温度控制回路各环节的数学模型。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。