Brushless Excitation System

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• A New Absolute Inductive Transducer for Brushless Servomotors
  -. sented by David T. Robinson, VP Engineering,. R O T A S Y N. Admotec Inc., at the Intelligent Motion Systems. '95 conference in Long Beach CA, Sept. 1995. TTalk. E C H N I C A L. A New Absolute Inductive Transducer for Brushless Servomotors. Introduction. available. This device utilizes a solid rotor...
• An Integrated Fan Speed Control Solution Can Lower System Costs, Reduce Acoustic Noise, Power Consumption and Enhance System Reliability
  of brushless DC fans, the most popular type of fan used in electronic equipment, and helps designers get around problems like acoustic noise, power consumption, mechanical wear-out and fault detection. An Integrated Fan Speed Control Solution Can Lower System Costs, Reduce Acoustic Noise, Power...
• difference between brush and brushless exciters is the method used to transfer the DC excditing current to the generator fields. Static excitation for the generator fields is provided in several forms including field-flash voltage from storage batteries and voltage from a system of solid-state...
• Smooth rotation
  oscilloscope traces (top and bottom) display the before and after effects of feed-forward compensation used to reduce ripple effects. A rotary brushless motor connected to an ACS SPiiPlus motion controller was first accelerated in one direction, held to a constant rpm, and then brought to a stop...
• Selecting DC Motors
  Sizing a DC motor to accurately meet a set of requirements can be a thankless task. Having to choose between brush-type or brushless motors can complicate the selection. Even experienced designers may sometimes overlook critical motor parameters and find problems after the system is up and running...
• Using the dsPIC30F & dsPIC33F DSCs for Sensorless BLDC Control
  application for using the are possible with software modifications. dsPIC30F to control brushless DC (BLDC) motors Hard modulation of diagonally opposite inverter without position sensors. The software makes switches is supported. extensive use of dsPIC30F peripherals for motor control. The algorithm...
• Product Technology News
  below +-0.25 um. Brushless linear servomotor drives allow velocities up to 800 mm/sec. Dual motors/encoders in the y-axis allow balanced drive and active yaw control. Positioning repeatabilities from +-0.025 to +-0.25 um are achievable. The cleanroom-compatible system can be used in lithography...
• Stepper motors tread on servosystem turf
  lets the motor run at relatively high slew speeds and efficiency. The hybrids are 25 to 60% efficient, filling the void between permanent-magnet steppers and brushless dc motors. The most widely used motors produce 200 step/rev, although they come in other step angles as well. Hybrid motors...
• Sensorless BLDC Control with Back-EMF Filtering Using a Majority Function
  and high efficiency. Increasingly, it is also This application note describes a sensorless Brushless used in automotive applications as a part of strategy to Direct Current (BLDC) motor control algorithm that is eliminate belts and hydraulic systems, to provide (R) Digital Signal Controllerimplemented...
• DC Motors
  are usually classified by shunt-wound, series-wound, and compound-wound. In addition to these, permanent-magnet and brushless types are also available, normally as fractional-horsepower motors. Motors may be further classified for intermittent or continuous duty. Continuous-duty motors can run without an off...

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