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 a double-stage revolving and switching method and a double-stage revolving and switching apparatus based on independent synchronic direction-regulation. The invention belongs to semiconductor device manufacturing equipments. The apparatus comprises a revolving stage-switching apparatus formed by a revolving stage-switching motor stator, a revolving stage-switching motor mover, and a rotary joint. Spinning apparatuses are provided on working stages. The spinning apparatuses comprise spinning motor stators, spinning motor movers, and spinning motor mover switching pieces. The revolving stage-switching apparatus is connected with the spinning motor mover switching pieces, such that the working stages can be driven to rotate around the center of a base stage. Therefore, position switching can be realized. With the apparatus provided by the invention, problems of inversed phases, twisted cables, and laser interferometer target loss of existing revolving stage-switching technologies can be solved. The apparatus is advantaged in small inertia moment, short stage-switching time with a same torque condition, high working stage operation efficiency, and high mask aligner yield.

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 provides a brushless DC motor water pump. It includes a driving circuit, which is composed of a main control chip, a Schottky diode, a voltage transient suppression diode, a main absorption capacitor, a discharge resistor, and a pull-up resistor; the anode terminal of the Schottky diode is connected to the positive port of the power supply, and the Schottky diode The cathode end of the diode is simultaneously connected to the cathode end of the voltage transient suppression diode, the main absorption capacitor, the discharge resistor, the pull-up resistor and the positive port of the power supply of the main control chip; the anode end of the voltage transient suppression diode and the main absorption capacitor The other end of the discharge resistor is connected to the negative terminal of the power supply; the duty cycle speed regulation command input pin of the main control chip is connected to the other end of the pull-up resistor; the motor phase winding connection pins of the main control chip are respectively connected to the three-phase The three U / V / W windings of the brushless motor are connected; the three phase windings of the brushless motor adopt a star connection method. The invention improves the efficiency of the water pump, reduces noise and vibration amplitude, and improves the stability of the water pump when used.

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 an air-based inertia energy storage pulse power supply system with an impact buffer function, belongs to the technical field of inertia energy storage pulse power supplies, andaims to solve the problems that no fixed mains supply exists in an existing air-based environment, primary energy supply exists, and a platform is impacted and damaged in the instantaneous dischargeprocess of a motor. The motor comprises an outer rotor and a stator. The outer rotor and the stator are coaxially arranged from outside to inside, and an air gap is formed therebetween; an engine is adopted as a prime motor, and spiral blades of the engine and a rotor yoke are integrally formed; a rotor bandage, a permanent magnet and a compensation cylinder are sequentially arranged on the innerside of the rotor yoke from outside to inside; the two ends of the stator shaft are fixedly connected with the front end cover and the rear end cover respectively. A stator yoke, an armature winding and a stator bandage are sequentially arranged on the outer side of the stator shaft from inside to outside. A magnetic field formed by the permanent magnet is interlinked with the armature winding through the compensation cylinder and the air gap; the armature winding is of a slotless annular multi-phase winding structure and comprises two phases of windings, and each phase of winding comprises four coils. The invention is used in the inertia energy storage pulse power supply.

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.

The invention discloses a single-motor full hybrid power system based on an automatic gearbox. The single-motor full hybrid power system is characterized by mainly comprising an engine (1), a motor (9), a controller (10), a power battery (11), a first clutch (2) and a second clutch (35), wherein the motor (9) is integrated on the upper part of an automatic gearbox (3); the controller (10) is connected with the motor (9); the power battery (11) is connected with the controller (10) and supplies electric energy to the motor (9); a driving disc of the first clutch (2) is connected with the output end of a bent axle of the engine (1) while a driven disc of the first clutch (2) is connected with an input shaft (31) of the automatic gearbox (3); the second clutch (35) is arranged between the fifth gear of the automatic gearbox (3) and an output shaft (34) of the automatic gearbox (3). The single-motor full hybrid power system is high in transmission efficiency, low in manufacturing cost, and capable of realizing all functions of the full hybrid power system (including a plug-in hybrid power system) and also ensuring continuity of power transmission of AMT.