50results about How to "Increase output level" patented technology

A brush motor has a magnetic sensor provided for detecting a change in a field magnet occurring in correspondence with a change in a rotational position of a rotor core.

A loudspeaker enclosure defined by one or more panels housing a drive unit. The drive unit includes a coil, a diaphragm, and a magnet. The magnet is decoupled from the one or more panels of the loudspeaker enclosure. Sound is generated by the movement of the diaphragm and complementary movement of the magnet, on application of an appropriate electrical signal to the coil. The moving diaphragm acts against a first volume of air within the enclosure, while the movement of a surface coupled to the magnet, acts against a second air volume, different from the first volume. The surface coupled to the magnet is decoupled from the one or more panels of the loudspeaker enclosure.

The disclosure provides a method and system for categorizing powertrain torque requests. A method for operating a powertrain of an autonomous vehicle is described. In one example, the autonomous driver may supply a torque request and a torque or power urgency assessment to a powertrain controller. The powertrain controller may monitor vehicle control system parameters based on the driver demand torque and the torque or power urgency assessment.

A commutator motor has a magnetic sensor for detecting changes in field magnets that occur in response to changes in the rotational position of a rotor core.

The invention discloses a frequency reduction control method of a modular multilevel converter containing auxiliary sub-modules. Each bridge arm of the modular multilevel converter topology is formedby connecting N half-bridge sub-modules, one auxiliary sub-module and one bridge arm inductor in series, the auxiliary sub-module adopts a full-bridge structure, and the capacitor voltage of the auxiliary sub-module is controlled to be 1 / 2 of that of the half-bridge sub-modules. A nearest level approximation modulation mode is adopted for the half-bridge sub-modules of each bridge arm, and the auxiliary sub-modules are input only when the input number of the bridge arm half-bridge sub-modules is smaller than or equal to a preset value; The forward input and the reverse input of the auxiliary sub-modules need to be determined according to the deviation between the actual values and the reference values of the capacitor voltages of the auxiliary sub-modules in the current state and the current directions of the bridge arms. According to the control method, the auxiliary sub-modules connected in series can only be input in part of time periods, the switching frequency of the auxiliary sub-modules is effectively reduced while the output level number of the MMC is increased and the output voltage harmonic distortion rate of the modular multilevel converter is reduced, and the loss of the system is reduced.