摘要:
The invention relates to the field of electric drive devices and electric machines, such as electric drive motors and electric generators for industrial applications, and more particularly to a method and an arrangement for identification of lateral vibration characteristics of an electric machine. The arrangement for identification of lateral vibration characteristics of an electric machine according to the present invention includes a frequency converter, one or more vibration sensors and an electric machine, wherein said frequency converter is arranged for producing torsional excitation, said torsional excitation effecting lateral vibration in said electric machine; and wherein said one or more vibration sensors include at least one lateral vibration sensor arranged for measuring the lateral vibration from said electric machine as excitation response and for producing lateral vibration data.
摘要:
Disclosed herein are permanent magnetic AC machine direct-drive resonant flapper system for flapping wing micro air vehicles and flapping fin autonomous underwater vehicles.
摘要:
A vibration motor includes a stationary portion, a vibrating body, an elastic member, and a damper member. The elastic member includes a first extending portion, a second extending portion, a first connection portion, a second connection portion, a third extending portion, a fourth extending portion, a third connection portion, a fourth connection portion, and a fifth connection portion. The damper member includes a first longitudinal portion and a second longitudinal portion. An inner section including the first extending portion, the third extending portion, and the fifth connection portion directly opposes an upper surface of a weight in plan view in an up-down direction.
摘要:
A haptic actuator may include first and second bodies movable along an arcuate path of travel. The haptic actuator may also include a biasing member coupled between the first and second bodies. At least one electrical coil may be configured to move the first and second bodies to produce a haptic effect.
摘要:
The torque motor as disclosed depends on decreasing the gap between a surface on a fixed part and a corresponding inclined facing surface on a rotating part, where the gap width is proportional to its distance from the angle vertex, in magnifying the electromagnetic force and its resulting torque. Therefore, the surface on the fixed part starts directly at—or close to—a point in align with the rotating part center of rotation, and hence the gap width is minimum at the start point and increases away from this point due to the inclination angle. The motor includes features, such as, utilizing many pairs of facing surfaces, many electromagnetic circuits; arrange the surfaces in pairs for balanced forces, works in one or two directions, the two directions electromagnetic circuits installed in one or two levels, and precautions and ways to avoid magnetic field interference and leakage.
摘要:
There is provided a vibration generation device superior in responsivity compared to the related art. The vibration generation device includes a stator, a rotor provided to the stator so as to be able to rotate around the central axis, and having a weight having a gravity center at a position shifted from the central axis, and an air resistance reduction part provided to the weight, and reducing the air resistance to the weight when the rotor rotates. The weight is formed to have a semicircular shape viewed from the axial direction, and the air resistance reduction part has an arcuate part adapted to connect an end edge on the upstream side in the rotational direction of the rotor in the outer circumferential surface of the weight and an end edge on the downstream side in the rotational direction to each other so as to form a circular arc shape.
摘要:
The shock absorber electrical generator includes a piston adapted for reciprocating motion within a cylindrical piston chamber as a vehicle's suspension system deflects. A working fluid is contained within the piston chamber. During the compression stroke of the piston, working fluid is forced through a circuit having at least one chamber in the cylinder opposite the piston. The working fluid communicates with at least one fan turbine motor disposed in the chamber, and with the piston chamber, which captures the working fluid on the return stroke. Upon compression of the piston, the working fluid passes through the fan turbine motor, thereby turning a shaft connected to a DC generator. The electric energy generated is routed to vehicle electrical components and/or charges the vehicle battery. Multi-generator systems, fan, and housing units are deployed in a plurality of shock absorber electrical generators that are attached to the vehicle's wheel system.
摘要:
A damper system for a vehicle including an electromagnetic damper, wherein the electromagnetic damper includes: (i) an electromagnetic motor; (ii) a motion converting mechanism; and (iii) an external circuit including (A) a first connection passage, (B) a second connection passage, (C) a first-connection-passage-current adjuster, and (D) a second-connection-passage-current adjuster, wherein the damper system comprises an external-circuit controller including: (a) a main-adjuster control portion configured to perform, on one of the first-connection-passage-current adjuster and the second-connection-passage-current adjuster that is designated as a main adjuster, a first control for mainly damping the relative vibration of the sprung portion and the unsprung portion; and (b) an auxiliary-adjuster control portion configured to perform, on one of the first-connection-passage-current adjuster and the second-connection-passage-current adjuster that is designated as an auxiliary adjuster, a second control for assisting the damping of the relative vibration of the sprung portion and the unsprung portion by the first control.
摘要:
An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator comprising a housing, an electrically conductive coil assembly movably mounted in the housing, the coil assembly having radially inner and outer sides, and upper and lower edges, thereof, a mount for the coil assembly extending inwardly of the radially inner side for mounting the coil assembly for linear vibrational motion along an axis about, a first biasing device mounted between the housing and the mount to bias the electrically conductive coil assembly in opposed directions along the axis towards a central coil position, a magnetic core assembly movably mounted in the housing for linear vibrational motion along the axis, and a second biasing device mounted between the housing and the magnetic core assembly to bias the magnetic core assembly in opposed directions along the axis towards a central magnet position, wherein the magnetic core assembly encloses the electrically conductive coil assembly on the radially outer side and on the upper and lower edges, and on a part of the radially inner side, the magnetic core assembly having a gap on a radially inner portion thereof through which the mount extends, and the radially inner portion including two opposed magnets spaced along the axis.
摘要:
The present invention provides a linear vibrator comprising a weight having an auxiliary magnet which is provided in a lower end of the weight and generates magnetic force with respect to the bracket. Therefore, a magnetic attractive force between auxiliary magnet and the bracket prevents undesirable fine vibrations and prevents the vibration unit from coming into direct contact with the casing.