2023-10-28
A stepper motor is a common type of motor with many unique characteristics. In this article, we will explore the static and dynamic characteristics analysis of stepper motors.
Static characteristic analysis involves the performance of a stepper motor in a stationary state. In the analysis of static characteristics, we mainly focus on the following aspects:
Dynamic torque characteristics: The dynamic torque characteristics of a stepper motor represent the ability to apply torque when the motor is stationary. This is one of the main indicators for measuring the output torque of a stepper motor. The dynamic torque is related to factors such as the model, driving mode, and current of the motor, and can be obtained through testing.
Static step accuracy: The static step accuracy of a stepper motor refers to the accuracy of each directional step of the motor in the stopped state. This value can be measured experimentally and is usually expressed in terms of angle.
Static position accuracy: Static position accuracy refers to the position accuracy of a stepper motor in a stopped state. That is to say, when the motor stops moving, its rotor position remains stable within a fixed accuracy range. This value is usually expressed in terms of angle.
Dynamic characteristic analysis involves the performance of stepper motors in motion. In dynamic characteristic analysis, we focus on the following aspects:
Dynamic response characteristics: The dynamic response characteristics represent the response ability of a stepper motor to acceleration and deceleration. It is related to the inertia of the motor, the performance of the motor driver, and the load of the system. Dynamic response can be optimized by changing the driving mode and current of the motor.
Dynamic running speed: The dynamic running speed is the highest speed of a stepper motor in motion. This is obtained by testing the maximum speed of the motor. The dynamic operating speed is related to the motor current and driving mode.
Dynamic out of step characteristic: Dynamic out of step refers to the ability of a stepper motor to experience out of step during motion. Out of step can cause an increase in the deviation between the motor rotor position and the commanded position. Out-of-step phenomenon is usually caused by excessive load or running speed.
By analyzing the static and dynamic characteristics, we can comprehensively understand the performance of stepper motors and make optimization based on actual needs. Different application scenarios have different requirements for the characteristics of stepper motors, so characteristic analysis is crucial for selecting and designing suitable stepper motors.
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