36results about How to "Reduce torque shock" patented technology

The present invention provides a dog clutch capable of obtaining a clutch on condition smoothly while reducing torque shock by clutch on operation at a time always. This dog clutch is composed of a first dog clutch member 32 connected with a rotary transmission member 11b supported rotatably on a transmission shaft 3 with relative rotation play [theta], a second dog clutch member 15b supported slidably on the transmission shaft 3 to engage and disengage with / from it, and a damper spring provided between the rotary transmission member 11b and the first dog clutch member 32. A first dog tooth 41 and a second dog tooth 42 like a gear engaging and disengaging mutually by travel in the axial direction of the second dog clutch member 15b are formed in the first dog clutch member 32 and the second dog clutch member 15b. Chamfers 41a, 42a for guiding travel of the second dog tooth 42 to an engaging position with the first dog tooth 41 are formed at opposing ends of these dog teeth 41, 42.

The invention relates to an axial-field permanent magnet compensated impulse generator with double contra-rotating rotors and belongs to the technical field of an impulse generator. The axial-field permanent magnet compensated impulse generator comprises a left rotor, a stator disc, a right rotor, two end caps and a shell. The left rotor, the stator disc and the right rotor are sequentially arranged in a hollow-square-shaped space formed by the two end caps and the shell along an axial direction. The left rotor along with one of the end caps and the right rotor along with the other end cap are in mirror symmetry on two sides of the stator disc. An air gap is formed between the left rotor and the stator disc, and another air gap is formed between the stator disc and the right rotor. The left rotor comprises a left rotor disc yoke, a left rotor permanent magnet, a left rotor compensation disc, a left rotor bandage, a left rotor shaft and a left rotor support. The stator disc comprises a stator support and a stator disc yoke. The double contra-rotating rotor compensated impulse generator is capable of solving the problem that the sizes of two motors are enlarged due to the fact that the two motors are arranged side by side and enabled to rotate reversely to counteract electromagnetic torque impact generated by the existing impulse generator during discharging.

The invention discloses a disc type dragging and power generation integrated pulse power supply system, belongs to the technical field of inertia energy storage pulse power supplies, and aims to solvethe problems of long shafting, large vibration and noise, low system compactness, low energy storage density and low power density due to the fact that two motors are axially arranged at present. A conical bearing is arranged in a fixed platform, a ball bearing is arranged in a fixed device, and a rotating shaft is fixed on the conical bearing and the ball bearing; and upper air gaps are formed between the rotor and the upper stators, the number of the upper stators and the distance between the upper air gaps are respectively adjustable, and lower air gaps are formed between the rotor and thelower stators. An energy storage flywheel is fixed on the rotating shaft, and a permanent magnet is arranged on the surface of the energy storage flywheel; the compensation element is arranged belowthe permanent magnet; a rotor bandage is wound on the surface of a compensation element; the rotating shaft penetrates through a central hole; an armature winding is placed on a stator yoke, and is adischarge end; and the motor stator winding is wound on the stator yoke, and the motor stator winding is a charging end. The beneficial effects are that the charging speed is adjustable, and discharging is protected.

The invention relates to a method for electrically connecting a converter (14) to an electrical machine (6) supplied with current by the converter (14), in which method a separate electrical connection (22) between the converter (14) and the machine (6), said connection comprising multiple phases (20a, 20b, 20c), is closed. In order to close the electrical connection without causing undue wear to the material, according to the invention at least two phases (20a, 20b, 20c) of the connection (22) are closed at different times.

The invention relates to a method for designing a stabilizer in a transmission shaft system of a double-feed wind turbine generator and the stabilizer. The method for designing the stabilizer in the transmission shaft system of the double-feed wind turbine generator comprises the steps that a complex frequency domain closed-loop transfer function E(s) between an electromagnetic torque increment delta Te and a motor rotating speed increment delta omega g is obtained, the complex frequency domain closed-loop transfer function E(s) is decomposed into E(s)=dH(s), the phase position theta H at the position of the reversing oscillation frequency omega i under the rated operating condition is obtained, the offset angle phi of the stabilizer is determined according to the phase position theta H, and the transfer function Gd(s) of the stabilizer is obtained according to the offset angle phi, and then the stabilizer in the transmission shaft system of the double-feed wind turbine generator is designed. Compared with an existing method for designing the stabilizer, the method for designing the stabilizer in the transmission shaft system of the double-feed wind turbine generator has the advantages that it is guaranteed that the stabilizer has the more effective control performance under the same gain condition, and the method has great significance in reducing torque impact of the transmission shaft system in the transient state, prolonging the mechanical life of the transmission shaft system of the wind turbine generator and improving the reliability of the transmission shaft system of the wind turbine generator.

A double workpiece table revolution exchanging method and a device thereof based on self rotating direction adjustment of measurement positions belong to the technical field of semiconductor manufacturing equipment. The device comprises a turning table switching device, and mechanically and structurally comprises a rotating motor stator arranged below a base table, a rotating motor rotor penetrating through the base table, a shaft sleeve embedded into the base table, and a silicon wafer table switching device. The turning table switching device realizes the position exchange of a silicon wafer table of a lithography machine, has the advantages that the structure is simple, the table switching beats are few, the rotary inertia is small, the time for switching double tables is short, and the like, is provided with a silicon wafer table self rotating mechanism in the silicon wafer table, and structurally comprises a silicon wafer table rotating shaft and a silicon wafer table spinning motor. A lifting shaft connecting device is arranged at the measuring position of the base table, and the silicon wafer table self rotating mechanism and the shaft connecting device can realize the self rotating of the silicon wafer table, thereby solving the problem that in the existing scheme of switching the table by rotating, the phase reverse of the silicon wafer table is difficult to be matched with an optical system.

The invention discloses a rotary exchanging method and a rotary exchanging device for double workpiece platforms based on synchronous steering of a turntable gear and belongs to semiconductor manufacturing equipment. The device comprises a rotary platform switching device consisting of a rotary motor stator, a rotary motor rotor, a rotating platform embedded in a base station and a rotary platform switching gear, wherein a liftable first shaft coupling device and a second shaft coupling device are arranged on the rotary platform; a first workpiece platform rotating shaft is arranged at the bottom of a first workpiece platform; a first workpiece platform switching device is arranged on the lateral surface of the first workpiece platform; a first workpiece platform gear is arranged at the waist part of the first workpiece platform; a second workpiece platform rotating shaft is arranged at the bottom of a second workpiece platform; a second workpiece platform switching device is arranged on the lateral surface of the second workpiece platform; and a second workpiece platform gear is arranged at the waist part of the second workpiece platform. According to the rotary exchanging method and the rotary exchanging device disclosed by the invention, in the switching process of double platforms, the orientations of the workpiece platforms are always kept unchanged and the problems that a cable in a traditional rotary platform switching scheme is not convenient to mount and an interferometer loses a target are solved; and meanwhile, the rotary exchanging method and the rotary exchanging device disclosed by the invention have the advantages that a rotational inertia in the specific implementation process is small, the required torque under the same platform switching time is small and the like.

The present application discloses a method for controlling the engine of a hybrid electric vehicle. For a direct-connected hybrid electric vehicle, in the process of starting or stopping the engine, the position of the crankshaft when the intake valve is closed when the engine is running normally is called the first reference position. The crankshaft position when the exhaust valve is opened is called the second reference position; in the process of starting or stopping the engine, an additional period of opening time is added for the exhaust valve; the starting point of the additional opening time is at the first reference position at the crankshaft position Within the range of 5 degrees before to 30 degrees after, the end point of the additional opening time is within the range of 30 degrees to 0 degrees before the crankshaft position is located at the second reference position. Under the premise of not affecting the normal operation of the engine of the direct-connected hybrid vehicle, the application greatly overcomes the vibration during the starting and stopping process, improves the riding comfort, and can further reduce the torque impact during ignition.

The invention discloses a two-workpiece-platform rotary exchange method and a device based on cable-box anti-rotation mechanisms, belonging to the technology of semiconductor manufacturing equipment. The device comprises two workpiece platforms, a rotary switching platform and two cable-box anti-rotation devices, wherein in the rotary exchange process of the two workpiece platforms, the rotary switching platform clamps the two workpiece platforms and rotates around the center of a base platform so as to realize exchange of an exposure station and a preprocessing station; and the cable-box anti-rotation mechanisms control self rotation of the two workpiece platforms so as to guarantee the same phase of the two workpiece platforms in the platform exchange process. The device in the invention can be used for solving the problems of large impact torque and more platform exchange steps in the existing linear platform exchange scheme and phase reverse of the two workpiece platforms, cable winding and target missing of a laser interferometer and the like in the existing rotary platform exchange scheme, and adopts a smaller weight balancing system so as to be beneficial to shortening the balance time; and simultaneously the system is simplified, the cost is reduced, the platform exchange steps are reduced, the platform exchange time is shortened, and the yield of photoetching machines is effectively improved.

The invention relates to a generator assembly for a wind power plant having an annular stator, an annular rotor and a spur gear transmission assembly, wherein the generator assembly has a basic carrier component on which all the bearings of the generator assembly are arranged.