dc motor speed controller using arduino Opções

dc motor speed controller using arduino Opções

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SHOPEE COMPRAR AGORA

A lot of Engineering projects and tutorials for the students to help them in their final year projects and semester projects.

A breadboard, electrical tape or solder to make solid connections in the circuit. A tutorial for using breadboards can be found below.

So in this article, we will cover the basic concept of controlling the speed of a DC motor with a potentiometer, using Arduino’s PWM signal with the help of a MOSFET Transistor. Below, you can see a working setup of our project, which we will be building in this article.

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This is quite different from a typical brushed DC motor, where the coils are on the rotor and the permanent magnet is outside. Since the BLDC motor’s rotor does not use coils, there is no need to supply it with current. That’s why there are no brushes.

The output of the IC needs to be connected to the base of the transistor through a resistor, and in my case I used 1k resistor. For preventing any voltage spikes produced by the motor we need to use a flyback diode which is connected in parallel with the motor.

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Much of this code, at least the part in the loop() function, has been taken from the sketch in Lecture 11. It generates the ping pulse that is emitted by the sensor, and then calculates the distance of an object from the time it takes for the echo to return.

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When the entire field is connected, the motor runs at the lowest speed. The speed can be further increased in steps by cutting out the resistance in the series turns. This method of speed control is used in electric traction.

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So, what happens to the torque-speed curve when the voltage used to drive the DC motor is changed? The graph below shows the torque-speed curves for different voltages. Doubling the drive voltage doubles both the no-load motor speed and the starting torque (torque when motor is locked in position).

The circuit is connected in breadboard as per the DC motor speed control circuit diagram shown above. The pot here is used to adjust the speed of motor.

SHOPEE COMPRAR AGORA