Low Voltage Servo Motor Supplier

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• The "no-cog" motor
  design for an air-bearing application in a servo writer. The coil in this cutaway of a ThinGap motor is made from precision-milled sheet copper in a fiberglass and polyimide material composite, rather than from conventional copper wires. The magnetic path for the permanent magnets is shortened...
• 'Low-surge' inverters
  . Whitepapers. Reference Centers. 'Low-surge' inverters. October 7, 2004. New circuit topology lets ac servodrives keep a lid on surge voltages that can otherwise shorten motor life. Printer-friendly version. Rafi Wilkinson. Yaskawa Electric America Inc. Waukegan, Ill. The G7 inverter provides both open-loop...
• When Planetary Gears meet Servomotors
  applications require less speed and more torque than economically available from a servo-motor alone. A gear reducer trades top-end speed, which may not be required, for higher output torque. Servomotors typically run at 3,000 to 5,000 rpm although for compact, high-power applications, some motors...
• Mighty motors
  synchronous ac motor, controlled by a DriveIT low-voltage ac drive, based on the ACS 600 or ACS 800 ac drive and connected directly to a motor/load without gearboxes or pulse encoders. With a favorable weight-to-performance ratio, the new Direct Drive permanent-magnet motor from ABB provides high...
• Techniques to Build Energy-Efficient and Sustainable Machines
  motors to meet preset goals. Less well understood is how the power factor of the motor figures into the calculation. Simply stated, power factor is a calculated ratio of the difference in degrees between voltage and current peaks in an ac circuit. The ideal power factor occurs when both peaks occur...
• Engineering Reference Gearheads and Gearmotors (.pdf)
  Design engineers are continually looking to increase throughput and production requirements. They require their suppliers to anticipate this demand by constantly improving product performance. Gear Eng Ref.indd Engineering Reference. Gearmotors & Gearheads. Servo Market and Stealth Objective...
• May the force loop be with you
  be stiff enough to accommodate a traditional, low-bandwidth thruster. However, it may exhibit resonant frequencies with a higher-bandwidth linear motor. A much stiffer frame with higher mechanical resonant frequencies is needed to prevent instability. Typically, closed-loop force-control applications...
• Application Note: Transformer Selection Considerations
  transformer that is practical even if the continuous rating is much larger than you require. Finally, remember that power is conserved through the servo system (except for losses). If the servo drive is providing large currents to the servo motor that is stalled, the transformer will not have a large...
• Correcting errors that never happen
  resonances before they happen. For example, a motor coupling winds up as it is accelerating and then, for a short time, overhauls the load as it unwinds. These changes are noted and mapped in the autotune sequence. Once mapped by the controller the low-frequency resonance never happens, nor does...
• Motion Control Drives Infusion Pump
  for the pump's size constraints. Above all, it had to be efficient. "Using a mathematical model, we homed in on the best gear ratio, the best speed and then picked the appropriate motor and gear ratios to meet those criteria," says Loughnane. They chose a 13-mm-diameter, 31-mm-long servo motor from MICROMO...

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