Just What the Doctor Ordered: Brushless-dc Motors 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 they have wide appeal within the medical-design community. One reason: A life expectancy of 10,000 hr compared to a brushed motor life of 2,000 to 5,000 hr. • As an alternative to stepper motors, the top seed of BLDC motors is not limited by a large number of poles. Article: Power and efficiency drive motor selection, Article: Selecting dc brush and brushless motors, It used to be that brushless-dc (BLDC) motors just weren't an option for most medical applications. But that situation is changing as the cost of BLDC drive electronics falls. Furthermore, a quest for more-efficient, compact, and reliable medical equipment has put BLDC motors on the prescription list for a variety of applications. By definition, a brushless-dc motor is a synchronous electric motor powered by a dc-power source. While derived from the brushed-dc motor, an electronic commutation circuit takes the place of the standard commutator and brush assembly. In terms of design, though, BLDC and brushed-dc motors are almost direct opposites. The windings of a brushed-dc motor wind around the motor's rotating shaft or armature, whereas the windings of a BLDC motor are affixed to the motor housing. Likewise, the magnets of a brushed-dc motor attach to the motor housing. But the magnets of a BLDC
Products & Services
Brushless motors are synchronous electric motors that have a magnetically (AC induction) or electronically (DC) controlled commutation system instead of a brush-based mechanical commutation system.
DC motors are most commonly used in variable speed and torque applications. They include brushless and gear motors, as well as servomotors.
DC Motor Drives
DC motor drives act as the interface and power supply between a motion controller and a DC motor.
Linear motors generate force only in the direction of travel. They are capable of extremely high speeds, quick acceleration, and accurate positioning.
DC servomotors are generally small and powerful for their size, and easy to control. Common types of DC servomotors include brushless or gear motors.
Portescap offers the broadest miniature and specialty motor product line in the industry, including Brushless DC technology. With speeds up to 1,000 rpm and Frame sizes from 12.7 mm (.5 in.) to 58 mm...
Topics of Interest
AN1175 Sensorless Brushless DC Motor Control with PIC16 MOTOR CONTROL Author: Joseph Julicher Dieter Peter BLDC motor control consists of two parts. Part 1 is Microchip Technology Inc. commutating the...
Brushless Direct Current (BLDC) motors are one of the motor types rapidly gaining popularity. BLDC motors are used in industries such as Appliances, Automotive, Aerospace, Consumer, Medical,...
Brushless Direct Current (BLDC) motors are gaining popularity and larger market acceptance. BLDC motors are used in industries such as Industrial Automation Equipments, Consumer, Medical, Automotive,...
The dsPIC30F2010 is a 28-pin 16-bit MCU specifically designed for embedded motor control applications. AC Induction Motors (ACIM), Brushless DC (BLDC) and DC are some typical motor types for which the...
Brushless DC (BLDC) motors have the performance advantages of DC permanent magnet motors without the need for motor brush maintenance. BLDC motors have the additional advantages of very high base...