Brushless direct current motor (BLDCM,) gets rid of the inherent shortcomings of the brushless DC motor, and replaces the mechanical motor rotor with the electronic motor rotor. Therefore, the brushless DC motor not only has the excellent speed characteristics of the DC motor, but also has the advantages of simple structure, no commutation flame, reliable operation and easy maintenance.
BLDC motor operation regulations master the rotor position and system of the motor converted from rectifier. For closed-loop control rate control, there are two additional provisions, namely, accurate measurement of motor rotor rate / or motor electric flow and its PWM signal to control motor rate output power.
BLDC motor can sequence PWM signal in side sort or management center sort according to the application regulations. Most of the applications only specify the actual operation of rate conversion, and will select 6 separate side ordered PWM signals. This shows the maximum screen resolution. It is highly recommended to use the filled management center sequencing PWM signal if the specified network server is used for precise positioning, energy consumption braking system or driving force reversal.
In order to improve the rotor position of the geomagnetic induction motor, the Hall effect sensor is selected for BLDC motor to show the absolute positioning magnetic induction. This results in more applications and higher costs. The sensorless BLDC control eliminates the need for Hall elements, and only selects the self induced electromotive force (induced electromotive force) of the motor to predict and analyze the rotor position of the motor. Sensorless control is particularly important for low-cost, adjustable speed applications such as cooling fans and pumps. When BLDC motor is used, refrigerator and compressor must be operated without inductor.
03/01/2021
Brushless direct current motor (BLDCM,) gets rid of the inherent shortcomings of the brushless DC motor, and replaces the mechanical motor rotor with the electronic motor rotor. Therefore, the brushless DC motor not only has the excellent speed characteristics of the DC motor, but also has the advantages of simple structure, no commutation flame, reliable operation and easy maintenance.
02/27/2021
The rotor inside the servo motor is a permanent magnet. The U / V / W three-phase electricity controlled by the driver forms an electromagnetic field. The rotor rotates under the effect of this magnetic field. At the same time, the encoder of the motor feeds back the signal to the driver. The driver adjusts the rotation angle of the rotor according to the comparison between the feedback value and the target value. The accuracy of servo motor depends on the accuracy of encoder (number of lines).
02/27/2021
1.Servo motor refers to the engine that controls the operation of mechanical components in the servo system, and is an auxiliary motor indirect transmission.
02/27/2021
A miniature servo motor includes a small DC motor, a set of variable speed (reduction) gear sets, a feedback adjustable potentiometer and an electronic control board. Among them, the high-speed rotating DC motor provides the original power and drives the variable speed (reduction) gear set to produce a high torque output. The greater the gear ratio of the gear set, the greater the output torque of the servo motor, that is to say, the greater the weight it can bear, the lower the speed of rotation it will be.
02/27/2021
How to maintain the servo motor 1. Regularly check the encoder connection line of the servo motor and the power connector of the servo motor to confirm that the connection is firm;
02/27/2021
The temperature of the motor is too high or the motor is faulty with smoke the reason: 1). Excessive load 2). Two-phase operation
02/27/2021
Before wiring, initialize the parameters. On the control card: select the control method; clear the PID parameters; let the default enable signal turn off when the control card is powered on; save this state to ensure that the control card is in this state when it is powered on again.
09/23/2020
With the development of modern industry and the improvement of automation level, various industries have higher and higher requirements for air supply, purification level, automatic control, and continuous and reliable air supply of air compressor stations.
09/23/2020
Basic knowledge is very important for sheet spray work, and the same is true during equipment installation. When installing compressed air pipelines, everyone must pay attention to the following precautions:
09/23/2020
1. Design intent For cost reasons, the control systems used in the air compressor manufacturing industry for a long time have been controlled by single-chip microcomputers, and digital tubes indicate working status and indicate parameter values
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