Provide help for everyone in choosing the right motor. (Because the stepper motor does not have this overload capacity, in order to overcome this moment of inertia when selecting a model, it is often necessary to select a motor with a larger torque, and the machine does not need such a large torque during normal operation. The phenomenon of wasted torque) Difference 6: different speed response performance Air Purifier Motors It takes 200-400ms for a stepper motor to accelerate from a standstill to a working speed (generally several hundred revolutions per minute).
Difference 3: Different low frequency characteristics Stepping motors are prone to low-frequency vibration at low speeds. It is generally considered that the vibration frequency is half of the no-load take-off frequency of the motor. It only takes a few ms and can be used in control situations that require fast start and stop. Take the Wanzhida servo motor as an example, it accelerates from a standstill to its rated speed of 3000 r/min. The maximum torque is 3 times the rated torque, which can be used to overcome the moment of inertia of the inertial load at the moment of starting.
At the same time, the encoder of the motor feeds back signals to the driver. The servo motor has a constant torque output, that is, it can output a rated torque within its rated speed (generally 2000 or 3000 r/min), and a constant power output above the rated speed. The rotor rotates under the action of this magnetic field. Take Wanzhida servo system as an example, it has speed overload and torque overload capability. Difference 5: different overload capacity Stepper motors generally do not have overload capacity, while servo motors have strong overload capacity..
The target value is compared and the angle of rotation of the rotor is adjusted. To To To Let me talk about the working principle first: a stepper motor is an actuator that converts electrical pulses into angular displacement. When stepping motors work at low speeds, damping technology should generally be used to overcome low-frequency vibration phenomena, such as adding a damper to the motor, or using subdivision technology on the drive.
The rotor inside the servo motor is a permanent magnet.45°); its working process is that the stepping motor generally needs two pulses: signal pulse and direction pulse. The servo motor controls the rotation angle by controlling the length of the pulse time. The accuracy of the servo motor is determined by the accuracy of the encoder (number of lines). When the stepper driver receives a pulse signal, it drives the stepper motor to rotate a fixed angle (called 'step angle') in the set direction, and its rotation is step by step at a fixed angle.
The servo motor runs very smoothly and there is no vibration even at low speeds. The power supply required by the servo motor is a switch (relay switch or relay card) and a servo motor; its work flow is a power connection switch and then the servo motor. Difference 4: different moment frequency characteristics The output torque of a stepping motor decreases with the increase of the speed, and will drop sharply at a higher speed, so its maximum working speed is generally 300~600r/min. Difference 1: Different control methods The stepping motor controls the rotation angle by controlling the number of pulses, one pulse corresponds to a step angle.
The servo system has a resonance suppression function, which can cover the lack of rigidity of the machine, and the internal frequency analysis function of the system can detect the resonance point of the machine, which is convenient for system adjustment. The vibration frequency is related to the load condition and the performance of the drive.45°, at this time, give a pulse, the motor will go 0. The angular displacement can be controlled by controlling the number of pulses, so as to achieve the purpose of accurate positioning; at the same time, the speed and acceleration of the motor rotation can be controlled by controlling the pulse frequency, so as to achieve the purpose of speed regulation.
Difference 2: The required work equipment and work process are different The power supply required by the stepper motor (the required voltage is given by the driver parameters), a pulse generator (mostly using plates now), a stepper motor, and a driver (the driver sets the step angle angle, such as setting The step angle is 0. The acceleration performance of the servo system is better. This low-frequency vibration phenomenon determined by the working principle of the stepper motor is very unfavorable to the normal operation of the machine. Today Wanda Motor will tell you the difference between stepper motors and servo motors. The U/V/W three-phase electricity controlled by the driver forms an electromagnetic field.Many people don’t know the difference between stepper motors and servo motors very well, so they are often in a dilemma when choosing a motor
