BLDC motor vehicle idling is a component. Referred to as idle the engine idling. Its role is: idle, according to the level of the engine temperature and load size, change the idle air channel cross-sectional area of ​​the engine under different conditions have the best idle speed.

BLDC motor controller is mainly used to bear the car idle, and its purpose is to be used according to the idle time to adjust the idle speed of engine load. Idle stepper motor mounted on the throttle body from the engine controller to control engine idle speed, engine speed deviation from the idle, the valve regulating flow from section to control the intake manifold into the air by the mechanical operation of the accelerator pedal steel wire rope . Throttle body with a bypass air channel, to provide air in the engine idling (when the throttle is closed). BLDC motor automatically pivot into his bypass air tract, which regulate air flow through the engine controller according to a variety of sensor inputs, the use of mobile automated BLDC motor controller for pivot out of the bypass air channel adjust engine idle speed. When the ignition key to open position, automatically BLDC motor to work. The switch signal input ECU, the engine is in idle perception condition. At the same time, real-time position in which the motor from the motor position sensor feedback to the ECU.

BLDC motor is a rotary machine, BLDC motor controller ,It will transform electrical energy into mechanical energy, which includes a solenoid winding to generate magnetic fields, or distribution of the stator windings and a rotating armature or rotor, a current through the wire and leaving the rotation by the magnetic field, these machines Some types can be used for BLDC motor can also be used for generators. It is the electrical energy into mechanical energy of a machine. The BLDC motor is usually part of a rotary motion for power, this BLDC motor as the rotor BLDC motor; there in a straight line, called linear BLDC motor. BLDC motor can provide power range widely, from milliwatts to a million kilowatts. BLDC motor is very easy to use and control, self-starting, acceleration, braking, reversing, valves and shelter capacity, to meet various operational requirements; BLDC motor’s high efficiency, no smoke, odor, do not pollute the environment , the noise is also smaller. Because it’s a series of advantages, so in industrial and agricultural production, transportation, defense, commercial and household appliances, medical electrical equipment and other aspects of wider applicat

Today’s domestic industrial control industry, for motors usually have such a view: low-end motor using AC induction BLDC motor, high-end motor servo motor. In fact there is a domestic motor applications skip the phenomenon, from the AC induction motor to jump directly to the BLDC motor controller, and the middle of the brushless DC motor is often ignored by people. Brushless DC motor as a DC brush motor characteristics, but also the frequency of the device, they are called the DC inverter, the international generic term for the BLDC. Unique brushless DC motor of high efficiency, low fever and other features and advantages, are in line with the national energy saving requirements. By comparison with some other motor, we can see these features more intuitive, and thus facilitate the selection of the motor when engineers select the most suitable motor, not the most expensive motor.

No commutator motor (roasted Yuushidendouki choking, Brushless Direct Current Motor) is a DC motor with the same structure as the permanent magnet synchronous motor drive built-in power supply control circuit instead of the commutator . Brushless DC motor, brushless DC motors, also called BLDC motor. Brush DC motor with high efficiency, have been widely used because it is relatively inexpensive, can be miniaturized, have life by the brush wear due to the sliding contact. Therefore, the larger motors are required to maintain replacement brush, small brush if you can not be replaced, and the life of the motor brush life. No commutator motor is replaced by the role of electronic brush (brushless DC motor) is.

BLDC motor controller  Advantages

there is no commutator brushes, no need to maintain its long life.
There is no electrical brush noise.
There is no external contamination of the powder brush wear.
High-speed operation is possible because there is no contact parts.

Cons

for electronic circuitry, Environmental resistance and ambient temperature will depend on electronic components.
Expensive compared to brushed DC motor. If the current is high, especially for switching semiconductor devices are expensive

How to Select bldc motor and stepper motor?

Mainly depending on the specific application of the case may be, simply to determine: the nature of the load (such as horizontal or vertical load, etc.), torque, inertia, speed, accuracy, acceleration and deceleration, etc., the upper control requirements (such as port interface and communication requirements), is the main control position, torque or speed mode. Power supply is DC or AC power or battery power supply, voltage range. Accordingly, to determine the motor and equipped with the drive or controller models.

Choose the stepper motor or bldc motor controller?

In fact, the choice of what kind of motor should be based on the specific application, depending on their own characteristics. Please see table below, naturally understand.

Stepper motor system bldc motor system

Small and medium-range torque torque (20Nm usually less) small medium large, full range

Low speed range (usually in the following 2000RPM, high torque motor is less than 1000RPM) high (up to 5000RPM), DC bldc motor can even reach 1 to 2 million r / min

Main control position control diverse intelligent control, position / speed / torque mode

Vibration at low speed smoothness (but with a sub-type of drive can be improved) is good, runs smooth

Accuracy is generally low, higher high when the sub-type drive (depends on the specific feedback device resolution)

Torque-frequency characteristics of high speed, good torque down fast torque characteristics, features hard

Overload overload feature will be out of step 3 to 10 times overload (short)

The majority of open-loop feedback control mode, the encoder can also be connected to prevent the loss of step closed loop encoder feedback

Encoder Type – Optical Rotary Encoder (Incremental / Absolute), resolver-based

Response speed is generally fast

How equipped with bldc motor controller?

According to the motor current, with the greater than or equal to the current drive. If you need a low vibration or high accuracy, can be equipped with a sub-type drive. For high torque motor, as with high voltage drive to get good high speed performance.

2 phase and 5 phase bldc motor What’s the difference, how to choose?

2-phase motor and low cost, but the larger the vibration at low speeds, the torque at high speed down quickly. 5-phase vibration motor is smaller, high-speed performance, compared with 2-phase motors, high-speed 30 to 50%, in some cases replace bldc motor.

When to select a DC servo system, servo it What’s the difference?

Bldc motor into a DC brush and brushless motors.

Brush motor, low cost, simple structure, starting torque, wide speed range, easy control, the need to maintain, but easy to maintain (for brushes), generate electromagnetic interference, the environment requirements. Therefore, it can be used for cost-sensitive general industrial and civil applications.

Brushless motor, small size, light weight, large output, fast response, high-speed, inertia is small, smooth rotation, torque and stability. Control complex, easy to implement intelligent, flexible way to their electronic commutation, the commutation can be square wave or sine wave commutation. Motor maintenance-free, high efficiency, low operating temperature, electromagnetic radiation is very small, long-life, can be used in various environments.

AC bldc motor is brushless motor, is divided into synchronous and asynchronous motors, motion control in general are currently with the synchronous motor, its power range, can do a lot of power. Large inertia, the maximum rotation speed is low, and with the power increases rapidly reduced. Therefore suitable for low speed applications running smoothly.

The motor should pay attention to the problem?

The power to run before you make the following checks:

1) the appropriateness of the supply voltage (overvoltage is likely to cause damage to the driver module); for the DC input of + / – polarity must not be wrong, the motor drive controller on the model or the current setting is appropriate (do not start too);

2) control signal line connected, secure, industrial site is best to consider shielding (such as the use of twisted-pair);

3) Do not put the need to take the start line all connected, only the most basic system even as, well, then gradually connection.

4) The grounding method must be clear, or the use of float is not connected.

5) began running half an hour to closely observe the motor state, such as the movement is normal, sound and temperature, and found the problem immediately stop adjustment.