Welcome to Oriental Motor's "Engineering Notes" Blog:

Which type of electric motor do you size for your conveyor, XYZ table, or robot?  Before you select one, you must understand the characteristics of each type of motor in the market.

Brushless motors have characteristics that make them excellent motors for speed control.  In this section, we will explain the technologies that enhance the performance of these motors. 

Brushless motors have different methods of controlling current flow depending on the drive system.  In addition, to control the rotation speed and generated torque, it is necessary to control the amount of the motor current.  Here, we will explain the PWM method for controlling the motor current.

There is a close relationship between the drive system and brushless motor characteristics, and various methods have been used to improve the controllability and characteristics of motors.  In this post, we will explain two typical drive systems: square wave drive and sine wave drive.

In part 4, we will explain the main components of brushless motors: feedback, magnetic field, and permanent magnets.

In part 3, we will explain the differences in the structure and rotation principles of brushless motors, and compare them to brushed DC motors and AC motors.

This is part 1 of the Technical Manual Series for brushless motors, which explains the three main types of brushless motors: inner rotor type, outer rotor type, and disk rotor type.

The BLV Series is one of two DC-input brushless motor speed control systems we offer.  While a brushless motor with hall-effect sensor feedback provides constant torque, wide speed range, and speed regulation, the BLV driver offers unique functions designed for mobile robots, such as low battery operation and ramp operation.

When a voltage is applied to an AC induction motor, it runs at a certain speed.  Variable speed requirements for AC induction motors are typically fulfilled by a 3-phase motor and an inverter or VFD.  This blog post also introduces another option.