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Mathematics of Electronic Motor Control
brush motor, which is a single phase device, generating this is done by a mechanical commutator with brushes. In a brushless DC motor, it must be done by the external controller. Figure 1 shows two kinds of force that are generated by the magnetic field interactions. They are known as the Q (quadrature
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Sinusoidal Control of PMSM Motors with dsPIC30F DSC
), Brushed DC Motors (BDC), Brushless DC Motors (BLDC) and Permanent Magnet Synchronous Motors (PMSM), to list a few. Several application notes have been published for ACIM operation (AN984, AN908 and GS004) and Brushless DC Motor Control operation (AN901, AN957 and AN992) based on the dsPIC30F motor
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Integrated motor and drive includes motion controls
of motors from Intelligent Motion Systems, Marlborough, Conn., ups the ante by adding a complete motion controller. The MDrive42AC Plus consists of a NEMA-42 hightorque brushless motor with fully integrated drive and control electronics. The company says the control delivers high-positioning accuracy
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Motor Calculations
Calculations. Development of Electromotive Force. MICROMO News & Events. Events Worldwide. New Product Releases. 3863CR DC Micro Motor. 3272CR DC Micro Motor. Speed Controller Series SC 5004 and SC 5008. BX4 Series 2232 Brushless DC Servomotors. New Linear DC Servomotors Series LM 0830. Absolute Encoder
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Application Note: Comparative Motor Technologies
Sinusoidal Brushless Servo Amplifiers. Application Note : Comparative Motor Technologies. - September, 2003. Air Motor and Cylinders. Air Actuators use compressed air to move a piston for linear motion or turn a turbine for rotary motion. Responsiveness, speed and power (torque) are determined by air
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Application Note: Controlling Motor Runaway (April 2002)
units the controller expects. Another possibility is old-fashion hardware of software failure due to programming bugs. PREVENTING MOTOR RUNAWAY. A - System Design Considerations. 1) Motor Choice. Brushless servo motor systems are more hardened to certain runaway scenarios. Torque or velocity commands
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Inside the frame
Controller chips intelligent enough to handle most dc brushless power-management tasks can now sit within the motor frame itself. The result: Compact motor/driver packages with relatively few external connections. Circuit boards holding driver electronics can be designed in the same circular form
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Getting torque-to-inertia right
The case of a pulsating-load testing machine shows how to ballpark qualities that are important for deploying electric motors. A 15-hp, E-182 frame brushless-dc motor from Powertec uses neodymium permanent magnets on the shaft and a conventional three-phase stator winding. An internal resolver