恒压器

Cable reel motor torque constant tension which has the characteristics When the load increases in the motor output shaft speed will automatically come down, volume Rao assured when cable tension unchanged. Rao nature of this excellent performance closely integrated with the Volume; Cage used motor hysteresis coupling increases in size, functionality, easy installation, the constant tension similar characteristics, we can under the conditions required output torque. They can pull the cable external circumstances, hysteresis coupling protect cables; using torque motor controller to increase frequency hysteresis couplings Surge part because of the cable reel SCR converter using a new technology operation, smoothing adjustments to the motor terminal voltage, thereby ensuring that the output torque of the motor unchanged. so that the cable can smooth the road with the truck

其中力矩电机电缆卷筒具有恒张力的特点，当负载增加时电机的输出轴转速能自动随之降低，保证电缆卷饶时张力不变，这个优越的性能与卷饶性紧密结合；采用笼型电机加磁滞式联轴器具有体积小，功能全，安装维护方便，近似恒张力等特点，既可以根据工况需要输出力矩，又可以在电缆受外力拉住的情况下，通过磁滞式联轴器保护电缆；而采用力矩控制器加变频电机加磁滞式联轴节的电缆卷筒因其调压部分采用可控硅变流新技术，可以平滑地对电机的端电压进行调节，从而保证了力矩随负载的变化而改变，使电缆能平稳的跟大车的行进。

In this paper, a specimen of the inverter system adopted a TMS320LF2407 DSP chip as its controller by using constant V/F control and space vector PWM technique is designed. Some key Problems are analyzed in theory and methods of them are put forward.

鉴于此，本文利用TMS320LF2407DSP作为控制芯片，采用恒压频比的控制方式和空间矢量调制策略研制了一台变频器的样机，并对一些关键的问题给予理论分析并提出实现的方法。

In order to pump water for the people under the uncommon condition of the frequency invertor ,this systerm has designed manual-controller.

为了防止自动系统发生故障，本设计做了手动控制器。关键词：恒压变频供水；PLC；变频器

The article describes a process control system based on ethernet and fieldbus technology. This system can complete parameter control, storage and analysis, such as temperature, pressure, flow rate and level. In the process of control, we use PID algorithm and realize isobaric water supply, then complete the stabilization of water tank.

利用以太网，结合西门子现场总线搭建了过程控制平台，完成了对温度、压力、流量和液位这些典型过程参数的采集、存储和分析，并利用PID算法通过对变频器、电控阀门的控制，实现恒压供水任务，进而完成对于水箱液位稳定的控制。

According to hardware design,control system of equipment is studied which transducer closed-loop control is at the core.The equipment can eject stable and isopiestic pressure water jet,and display the current pressure of water jet real time.

根据硬件设计，研究了设备的控制系统，主要以变频器闭环控制电机为核心，使喷嘴射出稳定、恒压的水流，并实时显示当前的水射流压力。

To get the problem solved, a protection circuit has been designed, which contains a micro-current amplifier, an absolute window voltage comparator, an ultra-range tips circuit, a UREF benchmark constant voltage source circuit, and an executive circuit.

针对这一问题，设计了一个保护电路，整个系统由微电流放大器、绝对值窗口电压比较器、超量程提示电路、UREF基准恒压源电路、执行电路构成。

When resistively heated at 1.5V the experimental results show the pressure sensing ranges from 0.1Pa to l0^5Pa with a thermopile output of 26mV to 50mV, and a response time around 1.4ms.

结果表明，在加热器1.5V恒压驱动条件下，器件的气压敏感范围为0.1Pa~10^5Pa，此时热电堆输出电压范围为26mV~50mV，最大响应时间预计为1.4ms。

In the development of institutions, the company set up under the Chinese Room, physical and chemical analysis room, drug analysis room, intelligence research, such as research departments; in experimental instrumentation, the company has advanced equipment at home and abroad, such as high-performance liquid chromatography, gas chromatography spectrometer, UV spectrophotometer, tableting machines, biochemical incubator, constant temperature and humidity, and drug dissolution device, Rotary Evaporator, vacuum drying, optical rotation detector, such as large-scale apparatus.

在开发机构方面，公司下设中药室、理化分析室、药物分析室、情报研究室等研究部门；在实验检测仪器方面，公司拥有国内外先进的仪器，如高效液相色谱仪、气相色谱仪、紫外分光光度计、压片机、生化培养箱、恒温恒湿器、药物溶出仪、旋转蒸发仪、真空干燥箱、旋光测定仪等大型仪器。

Combined with the practical work of fire extinguishing system of north freight yard in Yuci the constant pressure firefighting water supply system is introduced from electric control, converter, PID governor, pressure sensor and other aspects.

结合榆次北货场消防系统的修建安装，介绍了由电气控制柜、变频器、PID调节器、压力传感器及水泵电机等组成的恒压消防供水系统，指出该系统对火情具有反应速度快、适应性强、保护面广等优点。

From aspects of the principles and components of the water-supply system ,the configuration of the water-supply system ,and the pipeline pressure detecting equipment,etc.

从供水系统的原理及构成、供水系统的配制、管网压力检测装置等方面，介绍了一种由单片机与变频器组成的新型多功能变频恒压供水闭环自动控制系统的软硬件设计。

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。