823results about How to "Small torque" patented technology

An air vehicle, such as a manned or unmanned air vehicle, has a fuselage, a rotor/scissors wing, and a scissors wing. At helicopter mode, the rotor/scissors wing rotates to make the air vehicle fly like a helicopter to achieve vertical and/or short take-off and landing, hovering, and low speed flying. At airplane mode, the rotor/scissors wing and scissors wing form a scissors wings configuration to maximize the air vehicle's flying efficiency at a wide range of speed and flying conditions by adjusting the yaw angle of the rotor/scissors wing and scissors wing. During the conversion from helicopter mode to airplane mode, the scissors wing generates lift to offload the rotating rotor/scissors wing and eventually the offloaded rotor/scissors wing's rotating speed is slowed and stopped so that the rotor/scissors wing can be locked at a specific position and the conversion can be achieved. In a reverse order, the air vehicle can convert from airplane mode to helicopter mode. Either turbofan or turbojet engine, or turboshaft/turbofan convertible engine can be used to power the air vehicle.

An optical unit with shake correcting function may include a movable module having a lens, a fixed body supporting the movable module, a shake detection sensor for detecting shake of the movable module, and at least one pair of magnetic drive mechanism for shake correction which is structured on both sides of the movable module so that the movable module is swung with respect to the fixed body on the basis of detection result of the shake detection sensor to correct the shake of the movable module. The magnetic drive mechanism for shake correction is disposed so that a shake correction magnet is held by the fixed body and a shake correction coil is held by the movable module. Further, a shake correction coil may be disposed in a first region, where magnetic lines of force generated by a shake correction magnet are directed in directions generally going away from a supporting point part and/or a second region where magnetic lines of force generated by the shake correction magnet are directed in directions generally going toward the supporting point part.

A satellite laser communication compound axis light tracking device and a control method thereof are disclosed, which are mainly used for satellite laser communication terminal collimation and capture and high precision large scale tracking of a tracking system. The device adopts a compound axis system by combining a coarse tracking system and a fine tracking system, and a control method of the coarse tracking system unloading the fine tracking system. The coarse tracking system adopts a unique rotary biprism structure and has the characteristic of scanning with higher precision in a larger angel range. A capture tracking sensor adopts single CMOS sensor to carry out ternary form window with changeable view field and changeable sampling rate, and a communication tracking detector adopts a 4-quadrant detector. The invention adopts the low bandwidth rotary biprism coarse tracking system and the high bandwidth fine tracking system to carry out dynamic and self-adaptive bandwidth match to realize high dynamic range stable tracking of the compound axis system, thus having extensive application prospect in a satellite laser communication high precision laser link system.

In a double clutch transmission, particularly for front wheel drive cars with transversely mounted engines, the power path for the reverse speed extends through the same path as that for the second forward speed, both using the same input clutch, while the power path for the first forward speed extends through the other input clutch of the double clutch so that shifting between the reverse and first speeds can be accomplished under engine power.

In a power output apparatus of the present invention, a control unit sets a WOT (wide open throttle) line L2, where the maximum torque of an engine attains, as a boundary between an over drive area and an under drive area in the case where a rotor shaft of an assist motor is set in a state of over drive linkage. The control unit determines a target working point of an outer rotor shaft of a clutch motor, which functions as a drive shaft, based on an externally required output, and selects the WOT line L2 as a performance line of the engine in the case where the target working point of the outer rotor shaft is present in the under drive area. The control unit then sets a switching instruction flag, in order to change the state of linkage of the rotor shaft of the assist motor from the state of over drive linkage to a state of under drive linkage. This arrangement of the invention reduces the maximum load capacity of the assist motor and decreases the maximum electric current of an inverter circuit for driving the assist motor.

The invention discloses a wheel-leg hexapod robot with a suspension system. The wheel-leg hexapod robot comprises a machine body and six single leg structures; six single leg mechanisms are uniformly distributed in the circumferential direction of the machine body; each single leg structure comprises a heel joint, a hip joint and a knee joint, wherein each heel joint is connected with the machine body and is driven to rotate around a vertical Z axis through a motor; and each hip joint is connected with the corresponding heel joint through the suspension system. According to the suspension system, the shock-absorbing buffer effect in two directions can be achieved by using only one shock absorber. The hip joints and the knee joints are directly driven through the motor to rotate around a horizontal Y axis, and are connected through thigh structures; each knee joint is connected with the tail end of a shank structure and a wheeled locomotion mechanism is arranged at the tail end of each shank structure; and a foot end buffer mechanism is arranged at the front end of each shank. According to the wheel-leg hexapod robot with the suspension system, the integrity of the internal environment of the machine body in the motion process can be ensured, and meanwhile, the carrying capacity of the robot and the stability of the load in the motion process can be improved.

The invention discloses a method and device for preparing fertilizer from kitchen garbage. The method comprises crushing kitchen garbage, carrying out solid-liquid separation, carrying out pyrolysis carbonization on the separated solid kitchen garbage to obtain pyrolysis gas and carbon residue, washing the pyrolysis gas, carrying out anaerobic fermentation on the separated liquid to obtain a broth, biogas residue and biogas, carrying out aerobic fermentation on the broth, then preparing organic-inorganic composite liquid fertilizer from the obtained liquid, mixing the biogas residue and the biogas residue obtained by the pyrolysis carbonization, adding composite microbe engineering bacteria into the mixture, and carrying out solid state fermentation to obtain the organic carbon solid fertilizer. The method and device respectively carry out resourceful treatment on the solid kitchen garbage and the organic liquid, the organic liquid is treated by a biotechnology so that the organic-inorganic composite liquid fertilizer is produced, and solid kitchen garbage is subjected to pyrolysis carbonization so that energy and biochar are produced.

The invention discloses an implementation method for speed regulation of a range extender of an electric vehicle. The range extender comprises an engine, an electric generator, a corresponding engine controller and a corresponding electric generator controller, the electric generator, a driving motor and a motive power battery share a direct current bus, and the engine controller and the electric generator controller are both connected with a whole vehicle controller. When the range extender receives a power request sent by the whole vehicle controller, the whole vehicle controller sends corresponding request torque to the engine controller, the engine controller controls the engine to output the request torque, the request torque sent by the whole vehicle controller to the engine controller serves as feedforward, and the electric generator controller controls and regulates torque of the electric generator. The range extender is enabled to work at a target rotation speed, control of the speed regulation of the range extender is achieved, requirements for whole vehicle electric generation are met, the torque of the engine and the torque of the electric generator are coordinated and controlled to achieve response to the target rotation speed, and the torque, electric current and output power of the electric generator have small fluctuation.

The invention relates to an aircraft (1), preferably an unmanned aircraft (UAV), drone, or unmanned aerial system (UAS), comprising a rigid wing (2), which enables aerodynamic horizontal flight, and at least four rotors (4, 4'), which are driven by means of controllable electric motors (5) and which can be pivoted between a vertical starting position and a horizontal flight position by means of a pivoting mechanism (7), wherein all electric motors (5) and rotors (4) are arranged on the wing (2).

A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders combusting a lean air/fuel mixture and a second group of cylinders pumping air only (i.e., without fuel injection). In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: idle speed control, sensor diagnostics, air/fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, default operation, and exhaust gas and emission control device temperature control. In addition, the engine control method also changes to combusting in all cylinders under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device.

A power transmission device that has reduced power loss and is downsized so that it can be more easily mounted on a vehicle. The power transmission device includes an engine (2), transmission gear pairs (14-17) having different gear ratios and to which power outputted from the engine (2) is selectively transmitted, and an output member (11) for outputting power transmitted from any selected one of the transmission gear pairs (14-17). The power transmission device further includes a differential mechanism (1) having three rotation elements for performing differential action, the three rotation elements including a first rotation element to which the engine (2) is connected, and also includes an electric motor (3) connected to a second rotation element of the three rotation elements. The transmission gear pairs (14-17) include first transmission gear pairs (14, 16) connected to the first rotation element and to the output member (11) and also include second transmission gear pairs (15, 17) connected to a third rotation element of the three rotation elements and to the output member.

Provided is an angular ball bearing capable of controlling the whirling of a retainer at the time of high speed rotation.The retainer 21 of the synthetic resin is installed between an outer ring 1 and an inner ring 11, and the balls 31 are accommodated in a pocket 23 formed in the retainer 21. The pocket 23 is made to be cylindrical and a conical guide face 26 is formed at the end of inner diameter side of the back and front part of the retainer circumference direction of its cylindrical inner face 24. A curvature radius at the end of a large diameter of this conical guide face 26 is made larger than that of the cylindrical guide face 24 and a contact point of the balls 31 to the conical guide face 26 is prevented not to displace largely toward the diameter at the time of high speed rotation and then the whirling of the retainer 21 is controlled.

The invention discloses an electric stepless speed changer with three-gear speed change function for transport vehicles, and a power drive mode thereof. The speed changer comprises a dual-rotor motor and two groups of planetary gear mechanisms, wherein a first group of planetary gear mechanism is connected with an engine through an output shaft of the engine; a second group of planetary gear mechanism is connected with a main speed reducer through a sun wheel shaft; the dual-rotor motor is arranged between the two groups of planetary gear mechanisms and has a coaxial three-layer structure; and the first group of planetary gear mechanism switches a pure electric drive mode, a full-hybrid drive mode and a parallel hybrid drive mode, and the second group of planetary gear mechanism changes transmission ratio, so that the transmission ratio range is expanded, the volume of the dual-rotor motor is reduced, power density is improved, and energy during braking is recovered.

The invention discloses a system and a method for improving the operation of a hybrid vehicle. In one embodiment, the torque demand of a power train after gear shift is predicted for determining whether an early start of the engine is desired, so that the engine torque can be obtained after gear shift. The method can improve the vehicle torque response.

The invention relates to a push-the-bit fully-rotary guiding tool. The push-the-bit fully-rotary guiding tool comprises a centralizer mechanism, a guiding actuating mechanism and a spline cardan shaft mechanism. The front end of the guiding actuating mechanism is connected with the spline cardan shaft mechanism; the rear end of the guiding actuating mechanism is connected with the centralizer mechanism; and when the rotary guiding tool conducts guiding drilling, a controlling system controls a down-hole motor to enable a specific hole in a big gear to communicate with drilling liquid channels in an upper main body and a lower main body of the guiding mechanism at a specific position so as to adjust an irrotational shell to the position where a needed guiding well deflection and a needed guiding direction are the same, then a drilling tool conducts drilling along the needed well deflection and the needed direction, and a well track is monitored by all while-drilling testing instruments at any time. The push-the-bit fully-rotary guiding tool has the characteristics that the build-up rate is high, application range is wide, and the obtained well track is high in quality.

The invention discloses a permanent magnet motor which comprises a stator with a central hole and a rotor located in the central hole. A stator core is provided with a plurality line grooves for containing stator windings and coiling teeth located between adjacent line grooves, the tail end of each coiling tooth is further provided with a pair of wedge-shaped portions respectively extending to directions of the line grooves, each wedge-shaped portion is provided with an inner end face facing the rotor, each inner end face comprises an arc section located in the middle of the inner end face, the central hole is provided with a circle center, the radian of an arc face is larger than the radian of the central hole, and the circle center of the arc face does not coincide with that of the central hole. Compared with the prior art, the permanent magnet motor has the advantages of effectively improving performance of the permanent magnet motor through the characteristic that the radian of the arc section does not coincide with that of the central hole of the stator, and reducing machining requirements for the rotor due to the fact that only the stator is machined.

The invention discloses a drive system of a hybrid electric vehicle which includes an engine, a hollow shaft generator, an electromotor, an inverter, a battery and a pre-planetary gear mechanism arranged in a shell; a back-planetary gear mechanism is also arranged in the shell; the output end of the engine penetrates the hollow shaft of the generator and is connected with the planetary frame of the pre-planetary gear mechanism; the gear ring of the pre-planetary gear mechanism is connected with the planet carrier of the back-planetary gear mechanism; the sun wheel of the pre-planetary gear mechanism is connected with the hollow shaft generator; the hollow shaft generator is connected with the battery through the inverter; the battery is connected with the electromotor through the inverter; the electromotor is connected with the sun wheel of the back-planetary gear mechanism; the gear ring of the back-planetary gear mechanism is fixed on the shell; a power output interface used in the vehicle is arranged on the planet carrier of the back-planetary gear mechanism. The drive system of a hybrid electric vehicle reduces the requirements of the system on the torque of the electromotor.

A wind power plant generation device is characterized in that a wind machine (10) is connected with a planet carrier (6) of a planetary gear (2), and an outer gear ring (4) of the planetary gear (2) is connected with a rotor of a generator (11) or with a rotor of a speed regulating motor (3). The stator-winding of the generator (11) is directly connected with the electric network. A sun gear (5) of the planetary gear (2) is connected with the rotor of the speed regulating motor (3) or with the rotor of the generator (11). A power inverter (20) is used for providing power for the stator-winding of the speed regulating motor (3).

The invention discloses a stator surface mounted doubly salient pole permanent magnet motor which has simple and firm structure, stronger torque output capacity and higher power density, comprises a stator (1) and a rotor (4), and is characterized in that the rotor (4) is positioned in the stator (1); the stator (1) and the rotor (4) are both in doubly salient pole structure; the stator (1) is provided with a concentrated winding (3) and a permanent magnet (2), wherein, each concentrated winding coil of any phase of the concentrated winding (3) is positioned in an iron-core groove of the stator (1), and each phase concentrated winding coil is in series connection or in parallel connection; the permanent magnet (2) is positioned on the top part of tooth of the stator (1). The motor has no-load counter-electromotive force of a high degree approximate square wave (a straight flute rotor) or a sinusoidal wave (a tapered slot rotor), stronger torque output capacity, higher power density andstronger anti-demagnetizing capacity, and is especially suitable for being used as a driving element of an alternating current governor system.

A powertrain for transmitting power to a driven wheel of a motor vehicle includes a power source that includes a reversible electric machine. A first transmission includes an input driveably connected to the power source, a first output, and a mechanism for producing a stepless variable range of ratios of a speed of the output to a speed of the input. An epicyclic transmission includes a second input driveably connected to the power source, a third input driveably connected to the first output, and a second output driveably connected to a drive wheel. The transmissions produce a range of speed of the drive wheel that varies from negative to positive and includes zero.