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  2. Torque ripple - Wikipedia

    en.wikipedia.org/wiki/Torque_ripple

    Torque ripple is an effect seen in many electric motor designs, referring to a periodic increase or decrease in output torque as the motor shaft rotates. It is measured as the difference in maximum and minimum torque over one complete revolution, generally expressed as a percentage.

  3. Cogging torque - Wikipedia

    en.wikipedia.org/wiki/Cogging_torque

    Cogging torque is an undesirable component for the operation of such a motor. It is especially prominent at lower speeds, with the symptom of jerkiness. Cogging torque results in torque as well as speed ripple; however, at high speed the motor moment of inertia filters out the effect of cogging torque.

  4. Direct-drive mechanism - Wikipedia

    en.wikipedia.org/wiki/Direct-drive_mechanism

    Most motors exhibit positional torque ripple known as cogging torque. In high-speed motors, this effect is usually negligible, as the frequency at which it occurs is too high to significantly affect system performance; direct-drive units will suffer more from this phenomenon unless additional inertia is added (i.e. by a flywheel ) or the system ...

  5. Direct-drive sim racing wheel - Wikipedia

    en.wikipedia.org/wiki/Direct-drive_sim_racing_wheel

    Issues, quality, and performance indicators of direct-drive wheels, and of sim racing wheels in general, include detail and fidelity of force feedback, smooth torque transmission, nearly-zero backlash, rotary encoder resolution, clipping, dynamic range, torque ripple, [2] cogging torque, [10] drivers and digital signal processing with control electronics, [2] [11] signal filtering, [8 ...

  6. Reluctance motor - Wikipedia

    en.wikipedia.org/wiki/Reluctance_motor

    Disadvantages include high torque ripple (the difference between maximum and minimum torque during one revolution) when operated at low speed, and noise due to torque ripple. [ 1 ] Until the early twenty-first century, their use was limited by the complexity of designing and controlling them.

  7. DC motor - Wikipedia

    en.wikipedia.org/wiki/DC_motor

    In a motor, the magnitude of this Lorentz force (a vector represented by the green arrow), and thus the output torque, is a function for rotor angle, leading to a phenomenon known as torque ripple) Since this is a two-pole motor, the commutator consists of a split ring, so that the current reverses each half turn ( 180 degrees).

  8. Meghan Markle's New Brand Logo Is Full of Hidden Meanings ...

    www.aol.com/meghan-markles-brand-logo-full...

    Meghan Markle's refreshed lifestyle brand has a logo with a meaningful symbol.. On Feb. 18, the Duchess of Sussex announced that she was rebranding her lifestyle venture previously known as ...

  9. Dual-rotor motor - Wikipedia

    en.wikipedia.org/wiki/Dual-rotor_motor

    The inner rotor is in the center, surrounded by an empty space for the stator, which will be surrounded by the outer rotor. In another arrangement, one rotor is inside the stator with a second rotor on the outside of the stator. [2]