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GUANGZHOU FUDE ELECTRONIC TECHNOLOGY CO.,LTD casun4@casun.mobi 86--13539447986
Professional terminology, dynamic indicators, and common parameter solutions for stepper motors
1. Step angle accuracy:
The error between the actual value and the theoretical value of the step angle for each revolution of the stepping motor. Expressed as a percentage: error/step angle * 100%. The value varies with the number of runs, and should be within 5% for four runs and within 15% for eight runs.
2. Out of step:
The number of steps a motor operates in is not equal to the theoretical number of steps. Call it a step out.
3. Misalignment angle:
The angle at which the axis of the rotor teeth deviates from the axis of the stator teeth, and there must be an misalignment angle in the operation of the motor. The error caused by the misalignment angle cannot be solved by using subdivision drive.
4. Maximum no-load starting frequency:
The maximum frequency at which a motor can be directly started without load under a certain driving form, voltage, and rated current.
5. Maximum no-load operating frequency:
The maximum rotational speed and frequency of a motor without load under a certain driving form, voltage, and rated current.
6. Operating torque frequency characteristics:
The curve of the relationship between the output torque and frequency measured during operation of a motor under certain test conditions is called the operating torque frequency characteristic, which is the most important of many dynamic curves of the motor and the fundamental basis for motor selection.
Other characteristics include inertial frequency characteristics, starting frequency characteristics, etc. Once the motor is selected, the static torque of the motor is determined, but the dynamic torque is not. The dynamic torque of the motor depends on the average current (not the static current) of the motor during operation. The greater the average current, the greater the output torque of the stepping motor, which means the harder the frequency characteristic of the motor.