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introduction：Optical fiber sensing technology is a new technology formed with the rapid development of optical communication。In optical communication systems，Optical fiber is the medium through which light wave signals are transmitted over long distances。When light waves travel through optical fibers，Characterizes the phase of light waves、frequency、amplitude、Characteristic parameters such as polarization state，Cause temperature、stress、Magnetic field、Changes occur due to external factors such as electric fields，Therefore, optical fiber can be used as a sensor element，Detect the magnitude of various physical quantities that cause changes in the light wave signal，Dah is the optical fiber sensor。A device that uses external factors to cause phase changes in optical fibers to detect physical quantities，It is called phase modulation sensing fiber optic sensor，There are also amplitude modulation sensing models、Polarization modulation type、Various optical fiber sensors such as light transmission type。
2018-11-23 Reading quantity 255
introduction：1、High speed The weight of ceramic material is only the same as that of steel４０％，The characteristic of low density，It can realize the lightweight and high-speed bearing，The ceramic bearing can inhibit the increase of rolling load and slippage caused by centrifugal force when rotating at high speed，The speed of ceramic bearing is steel bearing１．３～１．５times，itsＤＮValue reachability３００wan，For example, angular contact ball bearings，Because it has a certain contact Angle，There will be rotational sliding between the rolling element and the raceway surface，When using ceramic rolling element with low density，Not only rotating slide small，It also plays a beneficial role in bearing heating and surface damage，Its also very useful for aerospace vehicles。
2018-11-23 Reading quantity 347
introduction：1.Use environment：non-flammable、General places of explosive or corrosive gases and machinery without independent requirements 2.Ambient temperature：It changes with the seasons，But not more than40℃ 3.Altitude：Not more than1000m
2018-11-23 Reading quantity 283
introduction：1.Grease with impurities； 2.underlubrication(Low oil level，Improper storage causes oil or grease to leak through the seal)； 3.The bearing clearance is too small or too large(Plant problem)；
2018-11-22 Reading quantity 559
introduction：When we use the laser displacement sensor, the data often bounce，This is mainly caused by the following reasons。
2018-11-22 Reading quantity 372
introduction：Digital torque sensor, also known as torque sensor, is a commonly used testing instrument，It is widely used in many industries，Especially in the automotive industry and motor inspection。In fact, digital torque sensors do not have a long development process like other sensors，The digital torque sensor was not born very early，But its moving very fast，This is mainly related to its powerful use，The development of digital torque sensors can be roughly divided into three stages。
2018-11-22 Reading quantity 340
introduction：Temperature rise：After running the motor，When measuring with a thermometer，The hot spot temperature rise of the motor surface is80°Cbelow。 Insulation class：Blevel（130°C） Service temperature：-10°C~+40°C（non-freezing） Service humidity：80%below（No place for dew）
2018-11-22 Reading quantity 261
introduction：1、Bearing performance、Materials Because the ring and rolling body of the rolling bearing have to repeatedly withstand high contact pressure and rolling contact，Bearing retainer to withstand tension or compression force and sliding contact，Therefore, there are certain requirements for the material properties of each part of the bearing。
2018-11-21 Reading quantity 330
introduction：1、Reaction equation：There are windings on the stator、The rotor is composed of a soft magnetic material。Simple structure、Low cost、Small step Angle，reachable1.2°、But the dynamic performance is poor、Low efficiency、Great fever，Reliability is difficult to guarantee。 2、Permanent magnet：The rotor of permanent magnet stepper motor is made of permanent magnet material，The number of poles of the rotor is the same as that of the stator。It is characterized by good dynamic performance、Large output torque，But this kind of motor has poor accuracy，Big step Angle（Generally speaking7.5°or15°）。
2018-11-21 Reading quantity 251
introduction：For a long time，The stable operation of electrolyte Angle sensors extends from high-performance avionics systems to high-precision seismic monitoring instruments and consumer electronics。In recent years，Accelerometers and Angle sensors in microelectromechanical systems are becoming more and more popular，Application in automobile、In consumer products such as game consoles and mobile phones，For industrial use, there are building laser instruments、Geographic monitoring equipment and machine level adjusters。Compared with electrolyte type Angle sensor，MEMsProducts are usually smaller in size，Lower cost，Therefore, it has become a popular component in manufacturing。
2018-11-21 Reading quantity 287
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