单片机控制步进电机外文文献翻译

1、单片机控制步进电机外文原文Stepping motor application and controlstepper motor is an electrical pulse will be converted into angular displacement of the implementing agencies. Put it in simple languagespeaking： When stepper drive pulse signal to a receiver ， it drives stepper motor rotation direction by setting a

2、 fixed point of view（and the step angle ）. You can control the number of pulses to control the amount of angular displacement, so as to achieve the purpose of accurate positioning；At the same time, you can by controlling the pulse frequency control the motor rotation speed and acceleration ， so as t

3、o achieve the purpose of speed.Stepper motor directly from the AC DC power supply， and must use special equipment stepper motor drive 。 Stepper motor drive system performance addition to their own performance with the motor on the outside, but also to a large extent depend on the drive is good or ba

4、d. A typical stepper motor drive system is operated by the stepper motor controller, stepper motor drives and stepper motor body is composed of three parts 。 Stepper motor controller stepper pulse and directionsignal， each made of a pulse ， stepper motordriven stepper motor drives arotorrotating ste

5、p angle, that is, step by-step further. High or low speed stepper motor or speed， or deceleration, start or stop pulses are entirely dependent on whether the level or frequency 。 Decide the direction of the signal controller stepper motor clockwise or counterclockwise rotation 。 the stepper motor dr

6、ive circuit fromthelogiccontrol,powerdrivercircuit， protectioncircuitandcomponents。Stepper motor drive controller，once received from the direction of signal and step pulse ， the control circuit on a pre-determined way of the electrical power-phase stepper motor excitation windings of the conduction

7、or cut-off signalControl circuit output signal power is low, can not provide the necessarysteppingmotor output power ， the need for power amplifier,which isstepper motor driven power drive part. Power stepper motor drive circuit to control the input currentwinding to form a space for rotating magnet

8、ic field excitation, the rotordriven movement 。 Protection circuit in the event of short circuit, overload, overheating such as failure to stop the rapid drive and motor.Motor is usually for the permanent magnet rotor, when the current flows through the stator windings， the stator windings produce a

9、 magnetic field vector 。 The magnetic field will lead to a rotor angle of rotation， making a pair of rotor andstator magnetic field direction of the magnetic field direction。 When the stator rotatingmagnetic field vector from a different angle. Also as the rotor magnetic field to a of view. An elect

10、rical pulse for each input, the motor rotation angle step. Its output and input of the angular displacement is proportional to the pulses, with pulse frequencyproportional to speed。Power to change the order of winding, the electricalwill be reversed 。 We can, therefore, control the pulse number, fre

11、quency andelectrical power windings of each phase to control the order of rotation of stepper motor.Stepper motor types：Permanent magnet （PM）. Magnetic generally twophase stepper, torque are smaller and generally stepping angle of 5 degrees or 15 degrees; put more wind for air-conditioning.Reactive

12、（ VR the domestic general called BF ， have a common threephase reaction， step angle of 1。5 degrees； also have five-phase reaction. Noise, no torque has been set at a large number of out.Hybrid (HB), common two-phase hybrid，five-phase hybrid, three-phase hybrid, fourphase hybrid, twophase can be comm

13、on with the fourphase drive， five-phase three-phase must be used with their drives;Twophase， fourphase hybrid step angle is 1。8 degrees more than a small size， great distance， and low noise；Fivephase hybrid stepping motor is generally 0.72， the motor step small， high resolution, but the complexity o

14、f drive circuits， wiring problems,as the 5-phase system of 10 lines.Threephase hybrid stepping motor step angle of 12 degreesbut according to the use of 8 degreesthe threephase hybrid stepping motor has a twophase mixed than the fivephase hybrid more pole will help electric folder symmetric angle， i

15、t can be more than twophase， five-phase high accuracythe error even smaller, run more smoothly.Stepper motor to maintain torquestepper motor power means no rotationstator locked rotor torque. It is a stepper motor, one of the most important parameters, usually in the low speed stepper motor torque a

16、t the time of close to maintain the torque 。 As the stepper motor output torque increases with the speed of constant attenuation， the output power also increases with the speed of change, so as to maintain torque on the stepper motor to measure the parameters of one of the most important. For exampl

17、e, when people say that the stepper motor 2Nm, in the of special circumstances that means for maintaining the torque of the stepper motor 2N.m.Precision stepper motors: stepper motor step angle accuracy of 35%， not cumulative。Stepper motor to allow the minimum amount of surface temperature：Stepper m

18、otor causes the motor temperature is too high the first magnetic demagnetization, resulting in loss of torque down even further, so the motor surface temperature should be the maximum allowed depending on the motor demagnetization of magnetic material points; Generally speaking, the magnetic demagne

19、tization points areabove130 degrees Celsius, and some even as high as 200 degrees Celsius, so the stepper motor surface temperature of 8090 degrees Celsius is normal。Start frequency of no load: the stepper motor in case of no-load to the normalstart of the pulse frequency, if the pulse frequency is

20、higher than the value of motor does not start, possible to lose steps or blocking。 In the case of theload， frequency should be lower. If you want to achieve rotation motor，frequency should be to accelerate the process， that is, the lower frequency to start， and then rose to a certain acceleration of

21、 the desired frequency (motor speed from lowrise to high-speed）.Step angle: that is to send a pulse， the electrical angle corresponding to rotation。Torque positioning: positioning torque stepper motor does not refer to the case of electricity, locked rotor torque stator.Operating frequency： step-bys

22、tep stepper motor can run without losing thehighest frequency.Subdivision Drive: stepper motor drives the main aim is to weaken or eliminate lowfrequency vibration of the stepper motor to improve the accuracy of the motor running. Reduce noise 。 If the step angle is 1.8 （full step） the two-phasestep

23、ping motor， if the breakdown of the breakdown of the number of drives for the8， then the operation of the electrical pulse for each resolution of 0.072 , precision of motor can reach or close to 0.225 ， also depends on the breakdown of the breakdown of the drive current control accuracy and other fa

24、ctors, the breakdownof the number of the more difficult the greater the precision of control.How to determine the stepper motor driver DC power supply：A Determination of the voltage： Hybrid stepping motor driver power supply voltage is generally a wide range (such as the IM483 supply voltage of 12 4

25、8VDC), the supply voltage is usually based on the work of the motor speed and response to the request to choose. If the motor operating speed higher or faster response to the then the voltage value is high ， but note that the ripple voltage can not exceed themaximum input voltage of the drive， or it

26、 may damage the drive 。B. Determination of CurrentPower supply current is generally based on the output phase current drive I to determine If a linear power supply, power supply current is generally preferable to 1.3 times the I； if we adopt the switching power supplypower supply current is generall

27、y preferable to I, 1。5 to 2。0 times.The main characteristics of stepping motor:1 。 A stepper motor drive can be added operate pulse drive signal must be nopulse when the stepper motor at rest，such as If adding the appropriate pulse signal, will to a certain angle （called the step angle） rotation 。 R

28、otation speed andpulse frequency is proportional to。2. permanent magnet step angle stepper motor version is 7.5 degrees, degrees around， takes 48 pulses tocomplete.3。 stepper motor has instant start and rapid cessation of superior characteristics。Change the order of the pulseyou can easily change th

29、e direction of rotation.Therefore，the current printers, plotters，robotics，and so devices are the core of the stepper motor as the driving force。Stepper motors have the following benefits ： (1）Low cost （2)Ruggedness （3） Simplicity in construction (4）High reliability (5）No maintenance (6）Wide acceptan

30、ce(7）No tweaking to stabilize （8）No feedback components are needed They work in just about any environment Inherently more failsafe than servo motors.There isvirtually no conceivable failure within the stepper drive module that cause the motor to run away. Stepper motors are simple to drive and cont

31、rol in an openloop configuration. They only require four leads. They provide excellent torque at low speeds ， up to 5 times the continuous torque of a brush motor of the same frame size or double the torque of the equivalent brushless motor. This often eliminates the need for a gearbox 。 A stepperdr

32、iven-system is inherentlystiff，with known limits to the dynamic position error。Stepper Motor Disadvantages：Stepper motors have the following disadvantages:Resonance effects and relatively long settling times 。Rough performance at low speed unless a microstep drive is used .3。Liability to undetected

33、position loss as a result of operating open-loop 。4. They consume current regardless of load conditions and therefore tend to runhot5 Losses at speed are relatively high and can cause excessive heating, and theyare frequently noisy （especially at high speeds) 。6。They can exhibit lag-lead oscillation

34、, which is difficult to damp.There is a limit to their available size ， and positioning accuracy relies on the mechanics （e.g., ballscrew accuracy).Many of these drawbacks can be overcome by the use of a closed-loop control scheme.外文资料翻译译文步进电机应用和控制步进电机应用和控制步进电机是将电脉冲转换成角位移的执行机构.通俗的讲：当步进电机驱动制脉冲频率来控制电机转动的速度和加速度，从而达到改变速度的目的.器。步进电机驱动系统的性能,除与电机自身性能有关外，在很大程度上取决于电路、保护电路、功率驱动电路和电源组成.当步进电机驱动器接收到来自控制步进电机所需的输出功率,所以必须进行功率放大，这就是步进电机驱动器的功率驱动部分。功率驱动电路向步进电机控制绕组输入电流,使其励磁形成空间旋转磁场，驱动转子运动.保护