He hooks up the SN754410 to two motors, giving him speed and direction control for both based on the duty cycle of a PWM signal entering the chip for less than $2.50.

With the advent of System-On-Chip (SOCs) controllers, the complete control logic for implementing BLDC motor control can be implemented within a single device. This not only helps in reducing the cost ...

A standard d.c. drive system with speed and current control is shown in Figure 4.11. The primary purpose of the control system is to provide speed control, so the 'input' to the system is the speed ...

Dc motor speed can be controlled smoothly down to zero, immediately followed by acceleration in the opposite direction ... and a suitable armature-voltage control system should supply power.

Afterwards, you will have lessons on AC motor control components and systems, both manual and automatic. This will culminate in training for you on AC variable speed drives. Week 3 | DC Motors.

The trick, apparently, is to measure the internal dc resistance of the motor – ether with an ohm meter, or though applying a low voltage to the motor, stalling it, then measuring the current. Add a ...

The topic of motors and motor control techniques is wide and varied. Part one of this two-part article will cover the principles of alternating-current (AC) motor operation and control. Part two will ...

Brushless-dc motors are taking center stage in medical-equipment design because they last twice as long a competing technologies. • Sensorless brushless-dc-drives have evolved to a point where ...