A servo system is one in which the system’s error (in position, speed, or torque) is corrected through the use of a feedback device that compares the system’s actual performance with its commanded performance. What makes a motor a servo motor, then, has less to do with its construction and operation, and more to do […]
DC Motors
BG 95 dPro CANopen brushless electric motor works in battery-powered designs
Dunkermotoren recently launched a new BG 95 brushless electric motor … a dc motor with a power range to 3 kW that operates in battery-powered and hydraulic-driven applications. In fact, these motors have continuous output to 1,100 W. Other features making this a high-performance package are integrated controls and power electronics. The integrated CANopen-interface simplifies integration […]
Updated: Trends in electric motors Part IV — More on miniaturization and the special case of medical applications
There’s a general consensus that the medical industry currently looms largest for innovation in electric motors. That’s what many industry experts we recently interviewed told us. Here, the trend is towards designs that are smaller, lighter, more efficient and cheaper. “The need for portable medical devices is being driven by a more mobile aging population who need machines […]
Updated: Trends in electric motors Part III — Networking, IoT, and sensing takes motor-driven designs to new heights
This article is one in a multi-part series covering the most recent trends in motions designs relating to electric motors. Here are other installments: Updated: Trends in electric motors Part I — Miniaturization, connectivity, and customization Updated: Trends in electric motors Part II — Scott Evans of Kollmorgen sets record straight on motion design All […]
Electric motor miniaturization, connectivity, and customization
Updated November 2019 ⚙️ Leading trends in electric motors for motion designs are migration to custom solutions; heightening emphasis on efficiency; and (where suitable) more use of motors that allow for miniaturization (with power-dense designs) and connectivity for IoT capabilities. “As reshoring picks up steam, we see more mass-customization,” said Scott Evans, director of product […]
New RPX-Series brushless dc motors from ElectroCraft
ElectroCraft, Inc. has expanded their brushless DC motor offering with the RPX22 and RPX32. These compact yet powerful 22-mm and 32-mm diameter motors are the first in a complete line of BLDC motors and gear motors planned for release. Starting at just 58 mm (2 in.) in length, the RPX range features high torque and high […]
Best DC motors for high starting torque?
A DC motor can be constructed in various ways, and each design has specific performance characteristics, particularly regarding speed and torque production. The rotor is basically the same in all DC motors, being made of windings that generate an electromagnetic field when current passes through them. But the stator can be made of either permanent magnets […]
New brushless DC slotted mini motors for surgical tools sterilizable, high-speed high-torque
Portescap is excited to announce the launch of application specific motors for surgical powered hand tools – arthroscopic shavers, ENT microdebriders and large bone drills. Prototypes will be available to ship within 3 weeks of order placement. Based on 20 years of experience in surgical motor design, application specific motors are designed to precise performance […]
Cost-effective electronic control for brushless dc motors
by Adriano De Rosa, IC Architect, Micronas || Motor drive solutions using brushless dc motors are increasing, thanks to the declining cost of electronics. Highly integrated, single-chip controllers are helping drive the trend. Advances in semiconductor integration are spurring new motor drive designs, including more intelligent drives. The various options for semiconductor integration are opening up […]
What is a commutator?
The operating principle of a DC motor is based on the interaction between the magnetic field of a rotating armature and the magnetic field of a fixed stator. As the north pole of the armature is attracted to the south pole of the stator (and vice-versa), a force is produced on the armature, causing it […]