1) brake dynamometer
功率油耗检测仪
1.
Study on the brake dynamometer of 25 type tractor;
25型拖拉机野外功率油耗检测仪的研制
2) power and fuel consumption measuring
功率油耗测试
1.
Design of power and fuel consumption measuring instrument for simple diesel engine
单缸柴油机功率油耗测试仪设计
3) oil-consuming measuring
油耗检测
1.
This paper designed measuring bedrock by automotive chassis dynamometers and developed the system of non-separated oil-consuming measuring by PC as the hardware and designed virtual instrument as software,matched with sensor,system signal adjusted and DAQ card.
本文设计了以反拖型汽车底盘测功机为基础的检测平台,通过对汽车的模拟道路行驶,通过超声波进行即时检测,研究开发了以PC为硬件平台、并结合虚拟仪器LabVIEW技术的上位机的软件系统,配合必要的传感器、信号调理器和数据采集卡组成的多通道油耗检测虚拟仪器系统。
4) power detection
功率检测
1.
A digital current sharing control technique for modularized UPS paralleling operation was describel in detail,presented the structure of paralleled system,and by analyzing circulating current of paralleled system,characteristic of the power regulation,a novel digital power detection technique was deduced.
较详细地阐述了一种模块化UPS并联系统的数字均流控制技术,给出了并联系统的结构,通过对并联系统环流、功率调节特性、并联系统数字功率检测技术分析,得到一种新型的功率检测方法。
2.
A circuit breaker design is introduced by using power detection.
设计了一种采用功率检测方式实现的电路断路器。
3.
The paper presents the circuit design for the very narrow pulse power detection and display based on A/D conversion and CPLD, gives out practical examples of the power detection and display for the very narrow pulse transmitting of a radar system.
介绍一种基于 A/D变换与 CPLD的脉冲功率检测及显示电路设计 ,并给出雷达系统极窄脉冲发射功率检测显示的应用实例 ,此电路也可进行连续波功率检测与显
5) power test
功率检测
1.
This paper designs a kind of whole hardware-supported power test circuit It aims at single phase and three phase system when mains voltage fluctuation is not half.
针对单相和三相对称系统,设计了一种在电网电压波动不大时由纯硬件组成的功率检测电路,包括无功功率检测和有功功率检测,介绍了其工作原理,画出了对应的波形图,得到了系统输出与功率之间的关系式,并通过Multisim软件对电路进行了仿真。
2.
In order to monitor the machining status of Machine Tool efficiently,the machine tool power test system using high precision energy metering IC ATT7022A was designed.
为了有效地对机床加工状态进行监控,设计了采用高精度电能计量芯片ATT7022A的机床功率检测系统,并采用了MSP430F247单片机结合液晶屏来显示检测信息。
补充资料:功率电能比较仪
功率电能比较仪
electric power and energy comparator
Q。习心d加neng bijlaoyi功率电能比较仪(electricp。例℃r and一“~~“儿脚W优出川enel甘将交流功率电能通过热电比较用相应直流电量来准确表示的仪器,是交流功率和电能墓准的核心部件。又称双桥功率电能比较仪。 功率电能比较仪由上、下两桥组成,有两个双加热丝的多元热电变换器Tl和飞,其双加热丝R::、璐、踢、踢和4个电阻民、几、凡、凡的电阻值彼此相等,并组成上、下两等臂电桥。上、下等育电桥可完成(A+丑)2一(凡一召)2二4AB的运算,其中沌=K.U,B二凡U,U为电压。当上桥接人交流电压和交流电流时,下桥同时接人相应大小的已知直流电压和直流电流,但交、直流功率极性应彼此相反(可使上、下桥电压极性相同,电流极性相反)。当上、下两桥参数完全对称.两热电变换器输出电势的差值为零时,交流功率即等于已知直流功率。当上、下两桥参数不完全对称时,可交换其输人量,此时的测量结果可取两次测量t的平均值。功率电能比较仪的额定电压为0.6V,额定电流为50 mA。组成双桥的桥臂电阻消耗功率很小,负载效应可以忽略,并可消除热电变换器非平方律特性和两热电变换器特性不一致时所引起的误差。桥竹中使用的电阻的时间常数都很小。功率电能比较仪的交直流转换误差为10一6量级。(陆祖良)
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