Stepper motor is different from other motor, its nominal rated voltage and rated current is reference only; And because stepper motor is a pulse power supply, power supply voltage is the highest voltage, rather than the average voltage, so the step motor can work beyond the scope of its rating. But when the choice should not be far off rating. Stepper motor appearance: the highest temperature allows stepper motor temperature is too high will make the first demagnetization of magnetic materials, which can lead to torque decline and even out of step, so the motor appearance allows the highest temperature should depend on different points of demagnetization magnetic material; Demagnetization of magnetic materials, in general, some are above 130 degrees Celsius, some even as high as 200 degrees Celsius above, so the temperature in Celsius 80 - step motor appearance90 degree completely normal. Stepper motor torque will vary with the increase of rotational speed down: when the stepper motor rotation, the motor of each phase winding inductance will form a reverse electromotive force; The higher the frequency, the greater the back emf. Under the function of it, the motor with frequency (Or speed)The phase current decreases, which leads to torque decline. Stepper motor at low speed can operate properly, will not be able to start, but if the frequencies above a certain threshold, accompanied by squeaking noise. Stepper motor has a technical parameters: no-load start frequency, the stepper motor under no-load condition can normal boot pulse frequency, if the pulse frequency is higher than the value, the motor does not start properly, may be lost or blocked. In the load cases, start frequency should be lower. If you want to make the motor to achieve high-speed rotation, the pulse frequency should be to accelerate the process, namely the start frequency is low, and then in a certain high frequency acceleration to want (Motor speed from low speed to high speed)。 Stepper motor no accumulated error: general precision of stepping motor for the actual steps from the Angle of three percent5, and do not accumulate. Stepper motor at work, the pulse signal in a certain order on each phase winding in turn (The circular distributor by the driver through the way of power control winding)。 Even the same devoted into the motor, when using different driving scheme, the torque-speed characteristics also vary widely. Generally consists of two phase four phase hybrid stepping motor driver to drive, as a result, the connection in series connection or and connection method can be used to connect two phase use four phase motor. In series connection is generally used in the motor speed low situation, the need to drive the output current of motor phase current zero. Seven times, and electric heating small; And connection method commonly used in motor speed higher occasions (Also known as the high speed connection), all you need to drive the output current of motor phase current 1. 4 times, thus motor heating is bigger. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone:
