40results about How to "Improve acceleration and deceleration performance" patented technology

The present invention relates to an unwinding assisting device for an automatic winder. The unwinding assisting device (12) includes a regulating member (40) that regulates a balloon generated when a yarn is unwound from a yarn supplying bobbin (21), and an elevating and lowering means for elevating and lowering the regulating means (40). The elevating and lowering means comprises a stepping motor (41) and a belt member (42) that transmits driving of the stepping motor (41). The belt member (42) is composed of a toothed belt.

The invention aims at providing a gas-electric series-parallel type ship hybrid power system with a fuel cell. The gas-electric series-parallel type ship hybrid power system with the fuel cell comprises a gas machine, an electric motor and a power generator; the output end of the gas machine is connected with the first input end of a gearbox through a permanent magnet coupler; the output end of the electric motor is connected with the second input end of the gearbox through a first clutch; the input end of the power generator is connected with the first output end of the gearbox through a second clutch; the second output end of the gearbox is connected with a propeller; a liquefied natural gas tank is connected with a gas supply device; the gas supply device is connected with the gas machine and the fuel cell; the fuel cell, a storage battery, a ship load, an inverter and a rectifier are all electrically connected with a distributing board; the inverter is electrically connected with the electric motor through a frequency converter; and the power generator is electrically connected with the rectifier. According to the gas-electric series-parallel type ship hybrid power system withthe fuel cell, the operation efficiency of the gas machine and the operation efficiency of the electric motor are further enhanced, the fuel consumption and emission of the gas machine are effectivelyreduced, and the power response of a ship is improved.

The invention aims at providing a dual-shaft type gas-electric hybrid ship power system. The whole dual-shaft type gas-electric hybrid ship power system comprises a gas machine, a reversible shaft driven motor, a storage battery, a permanent magnet coupler, a clutch, a gearbox, a propeller, a natural gas storage and supply device, an inverter, a frequency converter, a rectifier and a switchboard.The dual-shaft type gas-electric hybrid ship power system is mainly characterized in that the gas machine is connected with the reversible shaft driven motor through the permanent magnet coupler; thereversible shaft driven motor is connected with the gearbox through the clutch; and the power source is the storage battery. According to the dual-shaft type gas-electric hybrid ship power system, theadopted layout of multiple energy forms can meet demands of a ship under various environments and working conditions, the operation efficiency of the gas machine and the reversible shaft driven motoris further enhanced, the fuel consumption and emission of the gas machine are effectively reduced, the power response of the ship is improved and the application range of the system is wide.

The purpose of the invention is to provide a gas-electric parallel ship hybrid power system with fuel cells. The system comprises a gas machine, a fuel cell, a reversible motor and a gear case; the gear case comprises an input end, an output end and an input / output end; the output of the gas machine is connected to the input of the gear case via a permanent magnet coupler; the output / input end ofthe reversible motor is connected to the input / output end of the gear case via a clutch, the output end of the gear case is connected to a propeller, and a LNG tank is connected to a gas supply device; the gas supply device is connected to the gas machine and the fuel cell, and the fuel cell, the battery, the ship load, the inverter, and the rectifier are electrically connected to a power distribution board, and the inverter is electrically connected to the reversible motor through a frequency changer, and the reversible motor is connected to the rectifier. The various energy forms arranged bythe invention can meet the requirements of the ship under various environments and working conditions, effectively reduce the fuel consumption and emissions of the gas machine, and improve the dynamic response of the ship.

The active hydraulic energy accumulating device loop has increased hydraulic pump, motor, motor rotation speed controller and direction controlling valve in the hydraulic power source. The oil port of the hydraulic pump and the oil port of the electrically controlling valve are communicated via hydraulic pipes to the oil port of the hydraulic energy accumulating device and connected via hydraulic pipes to hydraulic pipe communicated to the power source; the motor drives the hydraulic pump to rotate; the motor rotation speed controller controls the rotation speed and direction of the motor and the pressure inside the hydraulic energy accumulating device with the system signal; and the pressure sensor is connected to the inlet of the hydraulic energy accumulating device. The active hydraulic energy accumulating device loop has raised adaptability and power utilizing rate and raised speed varying capacity.

The purpose of the invention is to provide a dual-engine dual-oar gas-electric hybrid ship power system. The whole system is composed of gas engines, reversible motors, a storage battery, a permanentmagnetic coupler, clutches, a gear case, a propeller, a natural gas storage and supply device, an inverter, a frequency converter, a rectifier and a distributing board. The main features of the systemare as follows: two gas engines are connected to the gear case through the permanent magnet coupler, and two reversible motors are connected to the gear case through the clutches, and the power source is the storage battery. The arrangement of various energy forms adopted by the invention can meet the requirements of the ship under various environments and working conditions, further improve theoperating efficiency of the gas machine and the reversible motor, and effectively reduce the fuel consumption and discharge of the gas machine. At the same time, the dynamic response of the ship is improved, and the system has a wide range of applications.

The purpose of the invention is to provide a gas-electric hybrid type ship hybrid power system with LNG cooling. The system includes a gas engine, a generator, motors and a natural gas storage and supply device. The gas engine is connected to a gear case through a shaft motor. The motors are connected to the gear case through clutches. The propellers are connected to the motors. An engine coolingsystem and a fuel cell cooling system are connected to an LNG gasification heat exchanger. An electric power source is a fuel cell, the generator and a storage battery. The gas-electric hybrid type ship hybrid power system with the LNG cooling can meet requirements of ships in various environment and working conditions through the adopted arrangement of a plurality of energy forms, improves running efficiency of the gas engine, the shaft motor and the motors, and utilizes LNG gasification cold energy so as to reduce the power of a heat dissipation fan and a liquid coolant circulating pump, reduce the area of a radiator and improve the integration of the system, further improves the utilization efficiency of fuel and reduces emission, thereby improving the power response of the ships, improves an application range of the system, and further improves the utilization rate of fuel.

The AC feeding system of the present invention seeks to have no switching area and simplifies the control of electric cars. One of the multiple substations has: the first three-phase power supply with the first frequency; the three-phase AC of the first three-phase power supply is converted into two-phase AC, a transformer in which only one of the two-phase output terminals is connected to the above-mentioned single-phase AC feeder; a first power converter with AC output terminals connected to the M seat of the two-phase output terminals of the transformer; The second power converter with AC output terminals connected to the T block of the two-phase output terminals of the transformer; the DC smoothing capacitor connected to the common DC terminals of the first and second power converters; the control from the first and a compensation current control unit for the compensation current generated by the second power converter; a second three-phase power supply having a second frequency; converting the three-phase alternating current of the second three-phase power supply into direct current, and supplying direct current power to the direct current smoothing capacitor diode rectifier.

The invention relates to an electric variable-pitch turboprop engine. The variable-pitch propeller turboprop engine comprises a propeller, the propeller comprises a shell, blades and a variable pitchmechanism, the blades are rotationally assembled on the shell, each blade comprises a rotating disc, a vane and an eccentric driving lever, the vanes and the rotating discs are coaxial, a polygonal mounting cavity is formed among the rotating discs in the shell, and the variable pitch mechanism comprises a motor, a speed reducer, a shaft coupling, a lead screw and a driving disc, and further comprises a poking disc. The poking disc is installed on the lead screw through a lead screw nut, the lead screw is assembled on the shell in a rotating mode, the poking disc is in circumferential rotationstopping fit and axial sliding fit with the cavity wall of the polygonal mounting cavity through a rotation stopping face, the poking disc moves in the axial direction of the lead screw along with rotation of the lead screw, and U-shaped grooves are formed in the poking disc and correspond to the eccentric poking rods in a one-to-one mode. Each eccentric poking rod is inserted into the corresponding U-shaped groove, and when the poking disc moves along the axial direction of the lead screw, eccentric poking pins are pushed to rotate along the axis of the turntable through the U-shaped grooves. The engine has the advantages of quick response to change the blade angle, safety, stability and small size.

The purpose of this invention is to simplify the train control by eliminating a switching section. In the alternating current feeding system, one sub-station of a plurality of sub-stations is provided with a first three-phase alternating current power source that has a first frequency; a transformer that is used for changing the three-phase alternating voltage from the first three-phase alternating current power source to a two-phase alternating voltage, and for connecting one of the one-phase output terminal of the two-phase output terminal to a single phase alternating current feeding electric wire; a first power converter that has an alternating current output terminal connected to M seat of the two-phase output terminal of the transformer; a second power converter that has an alternating current output terminal connected to T seat of the two-phase output terminal of the transformer; a direct current smoothing capacitor connected to a common direct current terminal of the first and second power converters; a compensation current control means for controlling a compensation current generated from the first and the second power converters; a second three-phase alternating current power source that has a second frequency; and a diode rectifier for converting the three-phase alternating current of the second three-phase alternating current power source to a direct current and feeding direct current power to the direct current smoothing capacitor.

An omnidirectional treadmill apparatus. The omnidirectional treadmill apparatus includes: a plurality of segments which are continuously arranged along the direction of a first axis, each of which having a belt part; a first rotation unit for rotating the plurality of segments along the direction of the first axis; and a second rotation unit for rotating the belt part of each segment in the direction of a second axis which is perpendicular to the first axis, wherein the belt part has a toothed surface which is tooth-engaged with the second rotation unit.

The invention relates to the technical field of mechanical transmission equipment, and especially relates to a stepping servo actuator based on closed-loop control. The stepping servo actuator comprises a ball spline, a first motor and a second motor are arranged on the ball spline, a shaft body of the ball spline penetrates through a rotor of the first motor, and the rotor of the first motor and the ball spline rotate synchronously; the shaft body of the ball spline penetrates through a rotor of the second motor, and the rotor of the second motor and the ball spline rotate synchronously; and the rotor of the first motor is connected with a first encoder, and a rotor of the second motor is connected with a second encoder. The operation precision of the ball spline is improved, the effect of continuous operation without step loss is achieved, it is ensured that the overall size and weight of a product are effectively controlled, and it is ensured that the application field of the product is not affected under the condition that the product performance is improved.

The purpose of the invention is to provide a gas-electric hybrid type ship hybrid power system with composite energy storage. The system includes gas engines, generators, motors, propellers, and a natural gas storage and supply device. Output ends of the gas engines are connected to input ends of the gear case. Input ends of the generators are connected to output ends of the gear case. The outputends of the gear case are connected to the motors. The propellers are connected to input ends of the motors. An electric power source is a supercapacitor, the generators and a storage battery. The gas-electric hybrid type ship hybrid power system with the composite energy storage can meet requirements of ships in various environment and working conditions through the adopted arrangement of a plurality of energy forms, form a composite energy storage system by using the supercapacitor, the generators and the storage battery, solves the problems of low electric energy quality of a ship power grid and short life of the storage battery, can quickly shore or release energy when a load of the system changes to prevent impact of the too fast energy change on the power grid, improves running efficiency of the gas engines, the generators and the motors, improves the utilization efficiency of fuel, reduces emission, and improves the power response of the ships.

In order to minimize a calculation load and surely obtain a maximum adhesion torque, estimated adhesion torques are always stored, an maximum value is obtained from the stored plural estimated adhesion torques immediately before slip / skid is detected when detecting the slip / skid, and the maximum value is set as a maximum adhesion torque. The maximum adhesion torque immediately before the slip / skid is detected is compared with a value of the estimated adhesion torque when the slip / skid is detected. When the calculated value exceeds a threshold value, it is determined as a condition where an adhesion coefficient drastically drops, and a suppression / return ratio of the torque is switched to a lower value than that under a condition where the adhesion coefficient does not drastically drop. The value of the torque at the time of suppression or return is set to a smaller value to surely suppress the slip / skid.

An energy converting device having an eccentric rotor includes a fixed portion and an eccentric rotor. This fixed portion has a central axis, an outer frame, and several fixed coil portions. The eccentric rotor has a bearing, a rotatory shaft, an eccentric arm, an eccentric shaft portion, a supporting plate, an inner annular magnetic portion, and an outer annular magnetic portion. The inner magnetic portion and the outer magnetic portion are concentric and aligned with the eccentric shaft portion. The eccentric shaft portion is offset from the rotary shaft. When the rotary shaft of the eccentric rotor rotates, these fixed coil portions cut through the inner magnetic portion and the outer magnetic portion repeatedly, so magnetic flux passing through the coils alternates accordingly to generate electromotive force. Conversely, it can be used as an electric motor. In addition, it can be integrated with a cycloidal speed reducer to form a motor with speed reduction and torque augmentation capability. The integrated cycloidal motor is compact, does not need a shaft coupler to transmit power from a motor to the reducer, and therefore may operate more smoothly.

The invention provides a single-engine three-propeller type air-electric hybrid ship power system. The single-engine three-propeller type air-electric hybrid ship power system comprises a gas engine,a storage battery and a reversible shaft-driven motor. The output end of the gas engine is connected with the input end of the reversible shaft-driven motor through a permanent magnet coupler, the output end of the reversible shaft-driven motor is connected with propellers though a clutch, a liquefied natural gas tank is connected with a gas supply device, and the gas supply device is connected with the gas engine. The storage battery, ship load, an inverter and a rectifier are all connected to a distribution board, the inverter is connected with the reversible shaft-driven motor, a first thruster and a second thruster through a frequency converter, and the reversible shaft-driven motor is connected with the rectifier. The layout of various energy forms adopted by the single-engine three-propeller type air-electric hybrid ship power system can meet the needs of ships in various environments and operating conditions, further improves the operating efficiency of the gas engine and the reversible shaft-driven motor, effectively reduces the fuel consumption and emissions of the gas engine, improves the dynamic response of the ships simultaneously, and the system has a wide range of application.

The invention aims at providing a dual-shaft type gas-electric hybrid ship power system. The whole dual-shaft type gas-electric hybrid ship power system comprises a gas machine, a reversible shaft driven motor, a storage battery, a permanent magnet coupler, a clutch, a gearbox, a propeller, a natural gas storage and supply device, an inverter, a frequency converter, a rectifier and a switchboard.The dual-shaft type gas-electric hybrid ship power system is mainly characterized in that the gas machine is connected with the reversible shaft driven motor through the permanent magnet coupler; thereversible shaft driven motor is connected with the gearbox through the clutch; and the power source is the storage battery. According to the dual-shaft type gas-electric hybrid ship power system, theadopted layout of multiple energy forms can meet demands of a ship under various environments and working conditions, the operation efficiency of the gas machine and the reversible shaft driven motoris further enhanced, the fuel consumption and emission of the gas machine are effectively reduced, the power response of the ship is improved and the application range of the system is wide.

The purpose of the present invention is to provide a hybrid power system with two engines and three blades for a ship with composite energy storage, including a gas engine, a generator, an electric motor, a pod propeller, and a natural gas storage and supply device. The output of the gas engine is connected to the input of the gearbox, the input of the generator is connected to the output of the gearbox, the output of the gearbox is connected to the motor, the propeller is connected to the output of the motor, the pod propeller is connected to the ship power grid, and the power source is super Capacitors, fuel cells, generators and batteries. When the load of the system in the present invention changes, the energy can be stored or released rapidly, preventing the impact of too fast energy change on the power grid, improving the operating efficiency of gas engines, generators and motors, improving the utilization efficiency of fuel and reducing emissions, and improving the efficiency of ships. The dynamic response improves the application range of the system, and the fuel utilization rate has been further improved.

The purpose of this invention is to simplify the train control by eliminating a switching section. In the alternating current feeding system, one sub-station of a plurality of sub-stations is provided with a first three-phase alternating current power source that has a first frequency; a transformer that is used for changing the three-phase alternating voltage from the first three-phase alternating current power source to a two-phase alternating voltage, and for connecting one of the one-phase output terminal of the two-phase output terminal to a single phase alternating current feeding electric wire; a first power converter that has an alternating current output terminal connected to M seat of the two-phase output terminal of the transformer; a second power converter that has an alternating current output terminal connected to T seat of the two-phase output terminal of the transformer; a direct current smoothing capacitor connected to a common direct current terminal of the first and second power converters; a compensation current control means or controlling a compensation current generated from the first and the second power converters; a second three-phase alternating current power source that has a second frequency; and a diode rectifier for converting the three-phase alternating current of the second three-phase alternating current power source to a direct current and feeding direct current power to the direct current smoothing capacitor.