8/30/2023 0 Comments Quotjump desktop![]() ![]() For typical motor & oacute w it is 1.8 degrees. In the stepper motor, the pulses fed to the winding cause that the rotor does not rotate in a continuous motion, but always makes a leap with a precisely defined angle. The biggest advantages of the stepper motor are the high torque and the way it is controlled, which allows the task of speeding or motor positioning with a precision to fractions in steps without the use of additional elements in the feedback coupler, such as an encoder. Hybrid stepper motors are currently the most popular (Figure 2) Despite the inferior & oacute parameter in traffic in many systems, they can successfully compete with DC servo drives or much better in terms of the & oacute parameter in modern AC / BLDC servo drives, and in some cases even irreplaceable. Stepper motors have gained a lot of popularity in the drive systems, thanks to their uncomplicated design, high output torque without transmission and simple control. Stepper motor as an alternative to servo drive Depending on the control algorithm method used, the motor can maintain the desired position, rotational speed or torque independent of the operating fault (eg load on the motor shaft, voltage drop). The regulator's task is to control the engine on the basis of data from the measuring element (eg an encoder) to obtain the required effect - eg displacement of the engine shaft by a specific angle, obtaining the desired number of revolutions / speed of the engine shaft. 1 Schemat blokowy zamkniętego układu regulacji w serwonapędzie. A feedback element - used to read the current position or the actuator speed (motor) - usually an encoder, resolver or tachometer.Regulator / driver called servo controller & ndash implementing a specific engine control algorithm (eg PID, control of speed, current, torque, position) based on the & oacute parameter in the given and read out of the feedback element,.An actuator called a servo motor, e.g. ![]() The servo disk is composed of the following parts & in: This is possible thanks to the work in the so-called closed control loop (Fig.1). An alternative to such solutions is a stepper motor controlled from a PLC and & quot power & power & amp or a dedicated motion controller.Ĭonstruction and principle of servo driveĪ servo drive is nothing more than a constant or alternating current motor, which in combination with a dedicated controller and an element that reads the actual rotational speed or position of the motor (eg an encoder) allows you to accurately execute a specified amount of rotation and task speed and acceleration. ![]() Unfortunately, these are often solutions that are not expensive or do not always coincide with the requirements of the application. Currently, the most common use are synchronous motors of alternating current AC or constant current BLDC as servo drives. Thanks to the work in the closed loop of the feedback, they are used wherever there is a need for high dynamics of movement, positioning, work at very low speeds, high control accuracy or precise movement from one position to another. ServonapĂŠs are one of the basic elements in executive applications in automation. ![]()
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