外文翻译-行星的发展减少电机与机械动力监测和网络能力.doc

1、英文原文Development of Planetary Reduction Motor with Mechanical Power Monitoring and Network CapabilityIn-hun Jang and Kwee-Bo Sim*Abstract: This article describes the useful way to measure the torque and RPM of the gearedmotor. For this we have made the planetary geared reduction motor including 2 Hal

2、l sensors in it and the monitoring system. The monitoring system displays the sensing values (torque, rpm) and the calculated value (power) and it also has the network capability using the Bluetooth protocol. We will show that our solution is much more inexpensive and simple method to measure torque

3、 and rpm than before.Keywords: Hall sensor, planetary reduction motor, remote monitor, torque.1. INTRODUCTIONWhen the motor is rotating, the torque and rpm are varying as the loads or the driving status connecting through reduction units are changing. On the contrary, one can monitor changes of the

4、loads or the driving status in the manner of measuring motor torque and rpm. Applications for torque and rpm measurement sinclu de determining the amount of power an enginemotor, turbine, or other rotating device generates or consumes. In the industrial world, ISO 9000 and other quality control spec

5、ifications are now requiring companies to measure torque during manufacturing, especially when fasteners are applied 1. Sensors make the required torque and rpm measurements automatically on screw and assembly machines, and can be added to hand tools. In both cases, the collected data can be accumul

6、ated on data loggers for quality control and reporting purposes. Other industrial applications of torque sensors include measuring metal removal rates in machine tools; the calibration of torque tools and sensors; measuring peel forces, friction, and bottle cap torque; testing springs; and making bi

7、o-dynamic measurements. There is a torque measuring method using the strain gauge and bridge circuit. A strain gage can be installed directly on a shaft. Because the shaft is rotating, the torque sensor can be connected to its power source and signal conditioning electronics via a slip ring. The str

8、ain gage also can be connected via a transformer, eliminating the need for high maintenance slip rings. Strain gages used for torque measurements include foil, diffused semiconductor, and thin film types. These can be attached directly to the shaft by soldering or adhesives 1. But, because this is a

9、 contact method, it has the lifetime which is dependent on rotating velocity and used time. So this system demands on replacement of some parts or whole system itself for maintenance. And this system is also relatively big and expensive, requiring preceding annoying process. The measuring method in

10、rpm measurement can be divided into 3 main groups; mechanical, optical and stroboscopic measuring methods 4. The mechanical method is the contact method and has the some disadvantage, but this method is still frequently used for low revolutions between 20 and20,000 rpm. The optical rpm measurement i

11、s the most popular and has the measuring range of 0 to 100,000rpm. The rotation is transmitted to the measuring instrument via infra red light beam coming from the instrument which is then reflected by a reflective tape on the object.The stroboscopic measuring method uses the stroboscopic principle

12、and has clear advantages over other measuring methods using mechanical or optical sensors; using this method it is possible to measure the rpm of very small objects or in inaccessible places. It has the measuring range of 100 to 20,000rpm.In this paper, we are going to propose another non contact me

13、thod to measure torque and rpm using the Hall effects sensor. We have made reduction motor using planetary gear trains and put the Hall effects sensor in it. This motor unit also has the monitoring system that can measure the torque and rpm through the Hall effects sensors. This monitoring system in

14、cludes the function of wireless communication with a remote server using Bluetooth protocol. It gives a motor unit to have the remote access point.2. TORQUE AND RPM MEASURMENT2.1. The special feature about planetary gear trainMost motor has a reduction unit on its center shaft to increase torque or

15、to decrease velocity that can not be realized in a motor alone. In many applications, one gets desired torque and velocity using various gearboxes with adjusting reduction ratio.There are many kinds of gearboxes, but the role of planetary gear trains is becoming more and more important nowadays. The

16、 method proposed by this study is the case with planetary gearboxes.The obvious advantages of the planetary gear trains are the higher torque capacity, smaller size, lower weight and improved efficiency characteristics of a planetary design. The small size and modular construction of planetary gear trains also means that they can be assembled in several stages, providing high reduction capability from a highly compact packag