Hybrid Stepper System
Hybrid Stepper System

Hybrid Stepper Motor

  • How to maintain the stepper motor

    1. Pay attention to cleanliness Ensuring the cleanliness is very necessary to ensure cleanliness in use. 2. Pay attention to lubrication Different seasons and operating temperatures have different requirements for lubricating oil. Pay attention to meeting the viscosity of lubricating oil to reduce equipment wear. 3. Pay attention to maintenance Attention should be paid to maintenance, maintenance requirements, and replacement of worn parts to ensure its effectiveness in use and to meet functional stability.

  • Why is the stepper motor energized and vibrates

    It may be that the subdivision is small or large, and the foot will be large with a small step. When the working voltage of your data signal is too low or too high, it is also possible that the photocoupler in the drive will not digest well. Too short a time between the start and end rate to the maximum rate or the interaction rate between the maximum rate and stillness can also cause tremors.

  • Stepper motor selection points

    When choosing a motor, please be careful not to work in the vibration zone from the beginning. With high vibration and noise, the failure rate will also increase. If the vibrator must work, it is recommended to change the voltage, current or add damping to solve it.

  • The reason for the vibration of the stepper motor

    Stepper motor is a kind of induction motor. Its working principle is to use electronic circuit to convert direct current into time-sharing power supply, multi-phase sequential control current, use this current to power stepper motor, stepper motor can work normally, driver It is the time-sharing power supply for the stepper motor. Although the multi-phase sequential controller has been widely used in the stepper motor, the stepper motor is not like an ordinary DC motor, and the AC motor is used under normal conditions. It must be composed of a double ring pulse signal, power drive circuit, etc. to form a control system before it can be used. Under normal circumstances, when the motor is energized, it will vibrate suddenly. It is all normal. Since the motor is energized, it will find an original position point in an instant. In operation, there will be no tremor. When the above conditions occur, there are several types of: 1. The subdivision setting of the controller is not very good, if it is with subdivision, the subdivision can be reduced or the single pulse frequency can be enlarged. 2. The current of the controller is not enough, check whether the current status of the controller is in the current capacity during work. 3. The motor load is too large. 4. Show whether the working voltage is enough. According to the above inspection, generally if there is no problem with the machine equipment, it can be handled.

  • Precautions for the use of stepper motors

    1. The stepping motor is used in low-speed occasions --- the speed does not exceed 1000 revolutions per minute (6666PPS at 0.9 degrees), preferably between 1000-3000PPS (0.9 degrees), and it can be used here by a decelerating device. At this time, the motor has high working efficiency and low noise; 2. The stepping motor is best not to use the full-step state, the vibration is large in the full-step state; 3. Due to historical reasons, only the nominal 12V voltage motor uses 12V, and the voltage value of other motors is not the driving voltage volt value. The driving voltage can be selected according to the driver (recommendation: 57BYG uses DC 24V-36V, 86BYG uses DC 50V, 110BYG adopts higher than DC 80V). Of course, the 12V voltage can also be driven by other driving power besides the 12V constant voltage drive, but the temperature rise should be considered; 4. For loads with large moment of inertia, a large frame size motor should be selected; 5. When the motor is in a relatively high-speed or large inertia load, it generally does not start at operating speed, but adopts a gradual frequency increase to increase the speed, first, the motor does not lose step, and second, it can reduce the noise and improve the positioning accuracy of the stop; 6. For high precision, it should be solved by mechanically decelerating, increasing the speed of the motor, or using a driver with a high subdivision number. A 5-phase motor can also be used. However, the price of the entire system is more expensive and there are fewer manufacturers. The argument is a layman; 7. The motor should not work in the vibration zone. If necessary, it can be solved by changing the voltage, current or adding some damping; 8. When the motor works below 600PPS (0.9 degrees), it should be driven by small current, large inductance, and low voltage; 9. The principle of selecting the motor first and then the drive should be followed.

  • Stepper motor application

    The stepping motor is based on the external control pulse, followed by the basic signal to control the direction. Stepper motors use electrical pulse signals, and then convert them to move or shift, and then open-loop control element stepping motor components can be controlled by controlling the sequence of electrical pulses applied to the motor coils and the frequency of the motor. And quantity. In this way, the steering of the stepper motor, as well as the speed, the angle of rotation, etc. can be adjusted. Three points that users should pay attention to when selecting stepper motors. It is necessary to choose a stepping motor, and at the same time, ensure that the motor used has a reliable quality, can achieve a good assembly effect during installation, and perform well in use. Regarding the selection of the motor, please pay attention to the following three points Selection points of stepper motor 1: When selecting a motor, please be careful not to work in the vibration zone from the beginning. Working in such an area not only cannot guarantee the smooth operation of the motor, but also aggravates the damage. At the same time as the vibration and noise are large, the failure rate will also increase. If the vibrator must work, it is recommended to change the voltage, current or add damping to solve it. 2: For the choice of this kind of motor, it is better to use small current, large inductance, and low voltage when working below 600PPS (0.9 degrees). In this way, the operation of the motor can be optimized, and while improving the effect, it also helps to reduce the operating cost of the motor and improve the economy. Only by paying attention to the selection points of the above two stepper motors, can the selection of the motor be effectively promoted and the applicability of the motor can be guaranteed.

  • Stepper motor driver power supply

    Stepping motors are classified according to their working methods: they can be divided into two types: power type and servo type. Subdivision has very high technical requirements and process requirements for the drive, and the cost will also be higher. There are some domestic drives that use "smoothing" processing of the motor phase current to replace subdivision, which belongs to "false subdivision". "Smoothing" does not produce microsteps, which will cause the motor torque to drop. Really subdivided control will not only cause the motor torque to decrease, on the contrary, the torque will increase. The current is to judge the size of the stepper motor driver's ability, and it is one of the important indicators for selecting the driver. Usually, the large current of the driver is slightly larger than the nominal current of the motor. Subdivision is a sign of control accuracy, and accuracy can be improved by increasing the subdivision. Subdivision can increase the stability of the motor. Generally, stepper motors have the characteristics of low-frequency vibration, which can be improved by increasing the subdivision, making the motor run very smoothly. The stepper motor driver adopts a differential interface circuit with a built-in high-speed photoelectric coupler, allowing long-line drivers to be received.

  • What is the function of the stepper motor control system

    The stepping motor and the stepping motor driver constitute a stepping motor drive system. The performance of the stepping motor drive system not only depends on the performance of the stepping motor itself, but also depends on the pros and cons of the stepping motor driver. The research on the stepper motor driver is carried out almost simultaneously with the research on the stepper motor. Choosing the right and appropriate stepper driver can enable the stepper motor to exert its control advantages. Choosing a suitable driver needs to be equipped with a driver larger than this current according to the current of the motor. If low vibration or high precision is required, a subdivision drive can be used. For high-torque motors, use high-voltage drivers as much as possible. For the driving power of the stepping motor, a conventional toroidal transformer can be used to transform the DC power supply.

  • Advantages of stepper motors

    1. The rotation angle of the motor is proportional to the number of pulses; 2. The motor has the maximum torque when it stops (when the winding is excited); 3. Since the accuracy of each step is 3% to 5%, and the error of one step will not be accumulated to the next step, it has better position accuracy and movement repeatability; 4. Excellent start-stop and reverse response; 5. Since there is no brush, the reliability is high, so the life of the motor depends only on the life of the bearing; 6. The response of the motor is only determined by the digital input pulse, so open-loop control can be adopted, which makes the structure of the motor simpler and control the cost; 7. Only connecting the load directly to the shaft of the motor can also rotate synchronously at a very low speed; 8. Since the speed is proportional to the pulse frequency, it has a relatively wide speed range.

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