49results about How to "Achieve direct drive" patented technology

The invention discloses a transverse flux permanent magnet or magnetic reluctance permanent magnet motor of an annular box structure. The motor is manufactured with a stator phase ring body and a rotor phase ring body as basic components, and an electromagnetism switching mode that iron cores of the stator phase ring body and iron cores of the rotor phase ring body are grouped in an odd and even mode is created. The inside of a left annular box, the inside of a middle annular box and the inside of a right annular box are respectively provided with one odd circumferential array iron core, one even circumferential array iron core and two 1 / 2 phase windings in series connection through the stator phase ring body. The iron cores of the rotor phase ring body are divided into the following two kinds: one kind of the iron cores serves as permanent magnet motors, a permanent magnet is embedded between a left magnetic pole and a middle magnetic pole of each odd iron core, a non-magnetic steel structure body is embedded between the middle magnetic pole and a right magnetic pole of each odd iron core, and vice versa; one kind of the iron cores serves as magnetic reluctance permanent magnet motors, a leftwards middle magnetic pole is embedded in each odd iron core, a non-magnetic steel structure body is embedded between each middle magnetic pole and the corresponding right magnetic pole, a rightward middle magnetic pole is embedded in each even iron core, a non-magnetic steel structure body is embedded between each left magnetic pole and the corresponding middle magnetic pole, and vice versa; the polarity directions of the permanent magnets embedded in the odd iron cores and even iron cores or the polarity directions of the stacked body of the magnetic reluctance permanent magnet materials of the leftward middle magnetic poles and the rightward middle magnetic poles are the same. The stator phase ring body and the rotor phase ring body are coaxially sleeved and are assembled in a segmented mode in the axial direction. The motor has universality.

The invention relates to the technical field of specialized robots, in particular to a two-wheel-leg-caterpillar band compound type movement mechanism. The two-wheel-leg-caterpillar band compound typemovement mechanism comprises a movement seat body, walking wheels, swing leg drive mechanisms and swing leg assemblies. The two walking wheels are installed at the left end and the right end of the movement seat body. Walking wheel drive motors are arranged in the walking wheels. The swing leg assemblies are arranged on the front side and the rear side of the movement seat body. The two swing legdrive mechanisms are arranged on the movement seat body. The swing leg assemblies on the two sides of the movement seat body are driven by the different swing leg drive mechanisms to swing. The swingleg assemblies located on the same side of the movement seat body are connected through a swing leg drive shaft. The swing leg drive shafts are driven by the swing leg drive mechanisms to rotate anddrive the swing leg assemblies to swing. The swing leg assemblies are provided with caterpillar bands. When the walking wheels make contact with the ground to rotate, the caterpillar bands leave the ground, and when the caterpillar bands make contact with the ground to rotate, the walking wheels leave the ground. The problems that an existing robot movement mechanism is poor in maneuvering flexibility, low in movement efficiency and the like on a complex terrain are solved.

This invention relates to a non-contacted supersonic motor including a stator, a rotor, a reversible drive circuit and a rotation speed following control device, in which, the stator is a ring post, the outside of which is set with ring piezoelectric ceramic plates and electrodes, in which, the reversible drive circuit includes a DC supply, a square wave generator, a frequency dividing phase shifter, a power amplified circuit and a transformer boosting circuit, in which, the rotation control device includes a control signal interface circuit, a controller and a motor vibration test circuit, which includes an integral phase shift circuit, a proportion amplified circuit, a subtraction circuit and a discriminating circuit.

The invention relates to a passive switch drive controller for a hybrid AC contactor based on an opto-coupler, comprising a resistor (R1), a capacitor (C1), a resistor (R2), a rectifier bridge (Z), a voltage regulator tube (W), a capacitor (C2), a resistor (R3), an opto-coupler (G3), a resistor (R4), a resistor (R5), a resistor (R6), a bidirectional thyristor (J1), a bidirectional thyristor (J2) and a bidirectional thyristor (J3). The characteristics of the thyristors are sufficiently utilized; a control circuit adopts the opto-coupler to realize separation of an excitation power supply of the contactor and electricity of a three-phase main circuit and unifiedly provides a switch signal controlled by the opto-coupler for a three-phase bidirectional thyristor; and a power supply and a current transformer are not required for configuration specially, so that the hybrid AC contactor based on opto-coupling separation and direct drive of switch control is realized. The passive switch drivecontroller not only realizes non-arc starting and disjunction, but also has the characteristics of simple control circuit, small volume, low cost, high performance index, strong universality, safety,reliability and the like.

The invention relates to the technical field of polishing units, in particular to an integrated outer rotor type direct drive polishing machine turntable device. An inner ring of a supporting bearing is fixedly arranged on a rotor shaft disk; an outer ring of the supporting bearing is fixedly arranged in a bearing seat; a polishing disk is arranged on the rotor shaft disk; the supporting bearing supplies precise rotational support for the rotor shaft disk and the polishing disk; a direct drive motor stator is arranged inside the rotor shaft disk through a supporting disk; a circle grating is arranged at the lower end of the rotor shaft disk; and a reading head is arranged on the supporting disk and used for finishing speed and position feedback control of the turntable. The rotor disk integrates the rotor of a direct motor, realizes direct drive to the polishing disk by the direct drive motor, leads the turntable to be compact in structure and high in precision, and can be widely applied to precise polishing units.

The invention relates to a linear platform using a compound bending vibration type biped linear ultrasonic vibrator, belonging to the technical field of piezoelectric ultrasound drive. The problems of complex structure, low positioning accuracy and the like existing in the traditional linear platform driven by an electromagnetic motor are solved. The linear platform provided by the invention comprises a vibrator, two linear guide rails, two rotors, two baffle plates, a platform, a pedestal, two positioning frames, a prepressing beam, a plate spring and prepressing screws, wherein two linear guide rails are arranged on the upper surface of the pedestal in parallel, and each linear guide rail is provided with one rotor; one side end of each rotor in the direction of movement is fixedly connected with one baffle pate, and the other side end of each rotor in the direction of movement is fixedly connected with the other baffle pate; the platform is fixedly connected with the upper end faces of the two baffle plates; and the prepressing beam is fixed on the pedestal through the two positioning frames, is higher than the rotors and is located between the two rotors. The linear platform provided by the invention adopts an ultrasonic vibrator.