A circuit which allows a connected motor to operate in clockwise and anticlockwise directions through alternate input triggers is called a bidirectional controller circuit. The first design below discusses a […]
A typical electronic speed control system is normally designed to track a speed level through reference signal or sample feed extracted from lever of a motor throttle, joystick, or other similar feedback source, and auto adjust the PWM rate on the motor through a proportionately switched FET device.
The controlling is implemented by varying the PWM duty cycle at the gate or base of the switching control transistors, resulting in a proportionate amount of speed variation on the motor. One downside of these controller at lower speeds is the emission of noise from the motor due to narrower PWMs which may be quite wide apart giving rise to RF interference unless of-course it is dealt with suppressors and snubbers.
These speed controller modules may have different configurations and specifications depending on which type of motors is being used.
As you will find under the following articles that for brushed motors the PWM control is applied to the armature of the motor, while industrial induction type of motors working with electromagnetic field winding may have controller adjusting the the magnetic flux of the field winding to regulate its speed.
For unique cases such as for brushless motors the control is achieved by implementing a calculated switching of the involved multiple sets of winding position across a fixed magnet rotor.
More on such concepts can be studied by referring to the following in-depth analysis.
A circuit which enables a user to linearly control the speed of a connected motor by rotating an attached potentiometer is called a motor speed controller circuit. 3 easy to […]
In this article we will try to understand how scalar control algorithm is implemented for controlling induction motor speed with relatively straightforward calculations, and yet achieve a reasonably good linearly […]
In this post we are going to learn about L298N dual H-bridge DC motor driver module which can be used to drive brushed DC motors and stepper motors with microcontrollers […]
In this post we will learn how to control servo motors using a joystick and Arduino. We will see overview about joystick, its pins, its construction and working. We will […]
In this project we are going learn how to make a simple unipolar stepper motor driver circuit using 555 timer IC. Apart from 555 timer we also need IC CD […]