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1.There is a certain range of stepper motor operating speeds. Generally, it is not said that the rotational speed, but only the step angle, the draw-out frequency and the pull-in frequency.
2.To speed up the operation, it is necessary to talk about the number of phases and beats that control the stepper motor. When it comes to a few phases and a few beats, we have to talk about its working frequency. The faster you use to control the motor, the shorter the time to rotate 1 step angle at a time, and the faster the stepper motor will rotate.
The speed of the arrival of the next phase frequency adjusts the speed of the stepper motor. Of course, this fastest time cannot be less than the period that controls the frequency of the photo.
Finally, if one set of pulse signals rotates a step angle, the faster the next set of pulses comes, the faster the running speed; Conversely, the slower the next set of pulses, the slower it will run; By adjusting the interval between each set of pulses, you can adjust the running speed of the stepper motor.
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The speed regulation of the stepper motor can be realized in three ways: 1. The pulse control type driver can be selected to realize the speed regulation of the stepper motor by changing the frequency of the control pulse, such as PLC sending control pulse to the drive NEM556, the frequency of the control pulse is different, the motor running speed is different, the frequency of change is different, and the motor acceleration and deceleration are different; 2. Choose a stepper driver with built-in control pulse, and the speed regulation of the motor can be realized through DIP switch or potentiometer or analog signal; 3. With communication control function, the motor can be directly changed through the control command to get the running speed.
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If the stepper motor wants to obtain a higher speed, it is impossible to achieve it in one step, and it must be started at a relatively low speed and then gradually accelerated to increase the speed, otherwise it may cause a loss of step.
There are two specific approaches to programming:
1. Change the control mode For example, in the three-phase stepper motor, the three-phase six beats are used for starting, and the three-phase three beats are used after a period of time, and the delay of each beat remains unchanged.
2. Uniformly change the pulse time interval Even if the delay function of each cycle gradually decreases, it remains stable after reaching a higher speed.
It would be nice to read more programs, good luck.
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The speed of the stepper motor shaft is proportional to the input pulse frequency when the driver is not subdivided, and the speed of the shaft is controlled by controlling the input pulse frequency, so as to achieve the purpose of stepper motor speed regulation!
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You can directly change the length of the time delay between phases, if the time interval is too short, the step will be lost, and if it is too long, it may not be rotated
The other is that when the stepper motor is driven by a driver chip, the PWM speed can be changed, that is, the duty cycle can be changed.
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Stepper motors are used to drive the road.
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When the pulse control driver is adopted, the motor speed can be adjusted by changing the frequency of the control pulse, and if the control pulse is constant, the motor motor speed can be adjusted by changing the number of subdivisions of the drive.
If a driver with a built-in control pulse generator is similar to the NDC556-T, the speed of the motor can be adjusted by an external potentiometer;
If the bus control mode is adopted, the motor running speed can be adjusted through the motion control command.
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The upper controller controls the speed of the stepper motor through the pulse frequency, and the number of pulses controls the displacement of the stepper motor. Adjust the speed and change the pulse frequency.
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The speed of the stepper motor can be changed by changing the pulse frequency output to the stepper motor driver.
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The speed regulation method of the motor is as follows: 1. The frequency of the power supply can be changed by using the inverter, so as to control the speed of the motor.
Drives can provide smooth speed control and can often operate over a wide range of speeds.
2. Speed regulation by resistance: Resistance speed regulation is to control the speed of the motor by changing the hidden bucket resistance of the motor.
This method is usually suitable for single-phase motors, but it is less efficient.
3. Speed regulation by step-down: control the speed of the motor by reducing the ratio of the power supply voltage and the voltage drop of the motor.
This method is simpler than transformer speed regulation, but the speed adjustment range is narrower.
4. Speed regulation through transformer: control the speed of the motor by changing the power supply voltage.
The use of a transformer can reduce the supply voltage to reduce the speed of the motor, or increase the supply voltage to increase the speed of the motor.
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Qinqin is happy to answer for you: the speed of the stepper motor can be achieved by controlling the current, voltage, pulse width and other parameters of the motor driver. 1.
Adjust the pulse signal frequency in the motor driver: The stepper motor driver will send a pulse signal of a certain frequency to the stepper motor to control the running speed of the motor. The speed of the stepper motor can be changed by changing the frequency of the pulse signal.
This method is usually controlled using a manual device such as a knob or switch, but it can also be controlled remotely using an automated device such as a computer or PLC. 2.Adjust the current settings in the stepper motor driver:
There is a current regulation switch in the stepper motor driver, through which the current in the electric round hand family driver can be changed, and thus the speed of the stepper motor can be changed. Adjusting the current size can make the stepper motor rotate more accurately, and at the same time, it can also eliminate the problem of unstable motor speed or ** phenomenon.
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1.The stepper motor is used in low-speed occasions, and the speed per minute does not exceed 1000 rpm, so the maximum speed applicable is 1000 rpm.
2.The rotational speed of the stepper motor depends on the pulse frequency, the number of rotor teeth, and the number of beats.
3.Its angular velocity is proportional to the pulse frequency and is synchronized with the pulse in time.
4.Therefore, when the number of rotor teeth and the number of operating beats are constant, the required speed can be obtained by controlling the pulse frequency.
5.Since the stepper motor is started with the help of its synchronous torque, the starting frequency is not high in order not to lose step.
6.Especially as the power increases, the rotor diameter increases, the inertia increases, and the starting frequency and the maximum operating frequency can differ by as much as ten times.
7.The starting frequency characteristics of the stepper motor make it impossible for the stepper motor to directly reach the running frequency when it starts, but to have a starting process, that is, to gradually increase the speed from a low speed to the running speed.
8.When stopping, the frequency of the blind cannot be immediately reduced to zero, but there must be a process of gradually decreasing the speed to zero at high speed.
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The speed regulation of the stepper motor can be achieved by changing the frequency of the dispersion pulse before the control. Specifically, it can be achieved through the following steps: select a pulse-controlled driver, and change the running speed of the stepper motor by changing the frequency of the control pulse.
Select a stepper driver with built-in control pulses, and use a DIP switch or potentiometer to rewind the limb or an analog signal to regulate the speed of the motor. With communication control function, the running speed of the motor can be directly changed through the control command. A stepper motor is a mechanical device that is driven by electricity, and its rotation position is controlled by a series of pulse signals.
The speed and direction of the stepper motor depends on the input pulse signal.
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Summary. Hello dear <>
Here's how to expand your <>
A stepper motor is a type of motor that converts an electrical impulse signal into a corresponding angular displacement or linear displacement. Each time a pulse signal is inputted, the rotor rotates an angle and takes a step forward, and the angular displacement or linear displacement of its output is proportional to the number of pulses input, and the rotational speed is proportional to the pulse frequency.
How to adjust the speed of the stepper motor.
Hello and Xunqin, I am happy to answer for you [Taipeng Wu happy] <> how to adjust the speed of the stepper motor: 1By choosing the spike pulse control type driver, the speed regulation of the stepper motor can be realized by changing the frequency of the control pulse2
Select the stepper driver with built-in control pulse, and the motor can be adjusted through DIP switches, potentiometers, and analog signals.
Hello dear <>
Here's how to expand your <>
A stepper motor is a kind of motor that converts electrical pulse signals into corresponding angular or linear displacements. Each time a pulse signal is inputted, the rotor rotates at an angle and the forward difference is not further advanced, and the angular displacement or linear displacement of its output is proportional to the number of pulses input, and the rotational speed is proportional to the pulse frequency.
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Stepper motor control method: control the speed of the stepper motor and input pulse signal can be controlled.
Stepper motor speed control method Control the speed of stepper motor, mainly controlled by changing the frequency of control pulses, just pay attention to the size of the subdivision value of the driver, for example, if it is a whole step, the motor needs 200 pulses per operation, if it is a half-step, the motor needs 400 pulses to run and run, and the digital driver like EZM552, the maximum subdivision value can reach 512, and the motor needs a pulse per operation.
Working principle: A stepper motor is a motor that converts an electrical pulse signal into a corresponding angular displacement or linear displacement. Each time a pulse signal is inputted, the rotor rotates an angle or a step forward, and its output angular displacement or linear displacement is proportional to the number of pulses input, and the rotational speed is proportional to the pulse frequency.
Therefore, stepper motors are also called pulse motors.
Stepper motor, also known as pulse motor, is based on the most basic electromagnet principle, it is a kind of electromagnet that can rotate freely, and its action principle is to rely on the change of air gap magnetic conductance to generate electromagnetic torque. Its original model was of origin between 1830 and 1860. Around 1870, attempts were made for the purpose of control, and it was applied to the electrode delivery mechanism of hydrogen arc lamps.
This is considered to be the original stepper motor. <>
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Summary. First of all, the parameters of the motor are changed (for example: 57 stepper motor resistance = ohm, inductance = if we want to improve the high-speed performance, we can reduce the resistance and inductance of the stepper motor accordingly, which will increase the speed and high-speed torque).
Secondly, the power supply voltage of the stepper driver can be increased, so that the effective current magnetic field during commutation is increased due to the high voltage at high speed.
The stepper motor speed is too fast.
First of all, the parameters of the motor are changed (for example: 57 stepper motor resistance = ohm, inductance = if we want to improve the high-speed performance, we can reduce the resistance and inductance of the stepper motor accordingly, which will increase the speed and high-speed torque). Secondly, the power supply voltage of the stepper driver can be increased, so that the effective current magnetic field during commutation is increased due to the high voltage at high speed.
The stepper motor speed is too fast, and there is no way to turn the speed down.
If there is no isolation between the AC power supply and the stepper driver DC bus (e.g., a transformer), do not connect the non-isolated port of the DC bus or the ground of the non-isolated signal to ground, which may cause damage to the equipment and injury to personnel. Because the common voltage of the AC is not to the ground, there may be a high voltage between the DC bus ground and the earth.
If it is a stepper motor driver, then it is enough to adjust the driver; If it is software control, then adjust the width of the pulse can be done, the width is large, the speed is slow, on the contrary, it becomes faster, but can not be adjusted too fast, the stepper motor has a pull-out frequency, more than the pull-out frequency may cause out of step and can't.
Okay, well, there's no plus drive and no plus software control, I'll take a look at adding a drive. Uh-huh.
Stepper motor is a kind of induction motor, its working principle is to use electronic circuits, direct current into time-sharing power supply, multi-phase sequence control current, use this current to supply power to the stepper motor, stepper motor can work normally, the driver is for the stepper motor time-sharing power supply, multi-phase timing controller Although stepper motors have been widely used, stepper motors can not be like ordinary DC motors, AC motors are used under conventional conditions. It must be composed of a double ring pulse signal, a power drive circuit, etc., and the control system can be used. Therefore, it is not easy to use stepper motors well, and it involves many specialized knowledge such as machinery, motors, electronics, and computers. >>>More
There are a lot of them, and there are a lot of them in the library.
Subdivision is to further refine the step angle on the motor name plate to achieve the purpose of improving positioning accuracy. So your understanding is right. But after the subdivision multiplier exceeds a certain multiple, the drive is made. >>>More
Control requirements: press the start button, PLC control stepper motor rotates clockwise for 3 cycles, stop for 5 seconds;Then turn counterclockwise for 2 weeks, stop for 3 seconds, and so onWhen the stop button is pressed, the motor stops immediately (the motor shaft locks).Press the offline button and the motor shaft is released. Suppose a three-phase stepper motor is selected with a step angle of 1 2. >>>More
In the "Pengpeng Science and Art" ** "Reluctance Motor" column, there is an animation to demonstrate the working principle of the stepper motor, which is very intuitive and can be understood at a glance.