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Conduct Research Top

  • The "no-cog" motor
    applications need smooth velocities without any variations in rotational speed. Typically, eight-pole slotted brushless dc (BLDC) motors work well in these situations. However, deviations displayed in a recent application were unacceptably high prompting a search for a smoother motor with lower cogging
  • China ups the motor ante
    China's motor manufacturers are well versed in small, standard motors. Now they're setting their sights on steppers and servos. Chinese manufacturers have been making motors for years. The majority of these have been small ac and dc units for electric tools, toys, and other high-volume applications
  • Lorentz forces shrink motor size
    other types and lets the motor run smoothly at extremely low speed, even when powered by a standard drive. In addition, the high peak torque capability eliminates gearboxes for many applications, such as where a 14-in. e-Torq motor can deliver more than 700 N-m torque and speeds to 6,000 rpm
  • High Roller
    other vehicles for the same amount of movement. They are also heavier and their chassis experiences high wear. Walking machines require complex active positional control. Walking is a slow process today and into the foreseeable future. The speed differential between level surfaces and rough terrain
  • Determining MOSFET Driver Needs for Motor Drive Applications
    to that of the IGBT. transistor used to be the device of choice for motor. In low voltage applications, this is achievable as the. control due to it's ability to handle high currents and. RDS-ON of MOSFETs can be in the 10's of mil i-ohms. high voltages. This is no longer the case. The MOSFET. At higher
  • Integrated motor and drive includes motion controls
    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, stability at low speeds, no dithering at zero speed, high starting torque
  • Simplifying Motor-Control Feedback Loops (epn)
    to DMC (digital-motor-control) solutions.01/07/2007. Reference: 23699. To control speed, angle or position of the rotor, a feedback loop is needed to sense the actual position during operation. Regardless of the motor type, a precision feedback loop is key for high efficiency. AC or DC motors have wide
  • Wheel may fly high
    /epoxy composites for the flywheel's rotor, low-loss magnets for the bearings, high-speed electric motors and generators for energy conversion, and computer algorithms for motion control. This particular flywheel, enclosed in an aluminum vacuum vessel, consists of a high-speed brushless dc motor, upper

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