What are the main differences between the two?
1. The way of control is different
Stepper motor: The rotation angle is controlled by controlling the number of pulses, and one pulse corresponds to a step angle.
Servo motor: The angle of rotation is controlled by controlling the length of the pulse time.
2. The workflow is different
Stepper Motors: The workflow generally requires two pulses for stepper motors to work: signal pulses and direction pulses.
Servo motor: The workflow is a power connection switch, and then a servo motor.
3. The low-frequency characteristics are different
Stepper motor: It is easy to have low-frequency vibration at low speed.
Servo motor: It runs very smoothly and does not vibrate even at low speeds.
4. The characteristics of moment frequency are different
Stepper motor: The output torque decreases with the increase of speed, and will drop sharply at higher speed, so its maximum working speed is generally 300-600r/min.
Servo motor: it is a constant torque output, that is, within its rated speed (generally 2000 or 3000r/min), the output of rated torque, above the rated speed is constant power output.
5. The overload capacity is different
Stepper motor: generally does not have overload capacity.
Servo motor: with strong overload capacity.
How to choose the right servo motor and stepper motor
AC servo systems outperform stepper motors in many performance aspects. However, in some undemanding occasions, stepper motors are often used as actuator motors. Therefore, in the design process of the control system, it is necessary to comprehensively consider the control requirements, cost and other factors, and select the appropriate control motor.
Mainly depends on the specific application, simply put, it is necessary to determine: the nature of the load (such as horizontal or vertical load, etc.), torque, inertia, speed, accuracy, acceleration and deceleration and other requirements, upper control requirements (such as port interface and communication requirements), the main control mode is position, torque or speed. Whether the power supply is DC or AC power, or battery powered, voltage range. This is used to determine the type of motor and the associated drive or controller.
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(2) If the wiring is incorrect, the internal circuit may be damaged, so pay full attention to the polarity of the power supply when wiring.
(3) If and high-voltage lines, ...
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Common problems of Buke servo motor
Common problems of Buke servo motors
Why does the Kinco servo always display "Encoder counting" fault alarm?
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Whether the encoder cable is connected correctly.
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Buke servo motor - AC servo motor vibration fault analysis
Mechanical
1. Bearing
The bearing clearance on the lead screw housing is too large after wear, or the bearing roller elements and cages are severely worn due to the lack of grease in the bearing, resulting in excessive loads. After bearing wear, the clearance is too large, which will cause the coaxiality error between the center of the motor rotor and the center of the lead screw.
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