340results about How to "Increase inertia" patented technology

A method and apparatus for actively controlling the impact between a club head and a golf ball. A golf club head has a face with an actuator material or device mechanically coupled to influence face motion. The face actuation controls impact parameters, impact properties, or resulting ball parameters such as speed, direction and spin rates resulting from the impact event between the face of the club and the golf ball. Further, the apparatus has a control device for determining the actuation of the face. Several embodiments are presented for controlling parameters such as ball speed and direction. The invention can use energy derived from the ball impact, converted into electrical energy, and then reapplied in a controlled fashion to influence an aspect of the face, such as position, velocity, deformation, stiffness, vibration, motion, temperature, or other physical parameter.

A portable ventilator uses a Roots-type blower as a compressor to reduce both the size and power consumption of the ventilator. Various functional aspects of the ventilator are delegated to multiple subassemblies having dedicated controllers and software that interact with a ventilator processor to provide user interface functions, exhalation control and flow control servos, and monitoring of patient status. The ventilator overcomes noise problems through the use of noise reducing pressure compensating orifices on the Roots blower housing and multiple baffling chambers. The ventilator is configured with a highly portable form factor, and may be used as a stand-alone device or as a docked device having a docking cradle with enhanced interface and monitoring capabilities.

A method and apparatus for actively controlling the impact between a club head and a golf ball. A golf club head has a face with an actuator material or device mechanically coupled to influence face motion. The face actuation controls impact parameters, impact properties, or resulting ball parameters such as speed, direction and spin rates resulting from the impact event between the face of the club and the golf ball. Further, the apparatus has a control device for determining the actuation of the face. Several embodiments are presented for controlling parameters such as ball speed and direction. The invention can use energy derived from the ball impact, converted into electrical energy, and then reapplied in a controlled fashion to influence an aspect of the face, such as position, velocity, deformation, stiffness, vibration, motion, temperature, or other physical parameter.

An apparatus is provided for identifying trace amounts of substances of interest in an air flow. The apparatus includes an inlet for receiving the air flow and an outlet for exhausting major portions of the air flow. The outlet is offset from the inlet. A porous impactor is disposed in alignment with the inlet and is impacted by particles entrained in the air flow. The porous impactor is heated sufficiently to vaporize particles impinging thereon. A detector communicates with the porous impactor and is operative for identifying substances of interest in the vaporized particles.

A golf club head with a deep aft cavity is disclosed herein. The body has a striking plate wall, a crown section, a sole section and a rear wall. An area of interest preferably has less than 12% of the mass of the golf club head. The golf club head preferably is a driver.

A flexible tubular pipe for hydrocarbon transport, comprising from inside to outside at least a carcass, an inner sheath, tensile armoring plies and an outer sheath, wherein the carcass is formed by winding of at least an anti-corrosive elongated metal element with large cross-section, with successive windings stapled with a thin anti-corrosive metal strip.

A method for gripping objects by means of a robotic gripper mechanism is provided, wherein the gripping mechanism comprises gripping jaws, a wedge actuator between the gripping jaws, wherein the wedge actuator moves the gripping jaws together and apart as it slides backward and forward, and a motor that moves the wedge actuator by means of a connecting leadscrew. The method comprises applying current to the motor so that the motor reaches maximum operating speed before the gripper mechanism comes into contact with any object. When the gripping jaws contact an object, e.g., media cartridge, they collapse over the object, gripping it. The inertia from the rotating mass of the motor increases the force and speed of the gripping action. In another embodiment, a flywheel may be added to the leadscrew to provide additional rotating mass and increase the inertia before contact.

The invention discloses a fluid system of a flow cytometer and a flow cytometric detection method. The fluid system comprises a sampling needle, a sampling needle cleaning device, a flowing chamber, a reaction tank, a hemolytic agent syringe, a sample syringe, a diluent syringe, a diluent bottle, a hemolytic agent bottle and a motor, wherein the sample syringe is respectively communicated with the sampling needle, the reaction tank, the flowing chamber, the sampling needle cleaning device and the diluent syringe, the diluent syringe is respectively communicated with the diluent bottle, the flowing chamber and the reaction tank, the hemolytic agent syringe is respectively communicated with the hemolytic agent bottle and the reaction tank, and the hemolytic agent syringe, the sample syringe and the diluent syringe are all driven and controlled by the motor. According to the invention, driving motors for a plurality of syringes are integrated into one, arrangement of the syringes satisfies moment balance, integral rigidity and inertia are improved, gap instability of the driving motor can be buffered, a more stationary sample flow can be obtained, and thus, detection precision of the flow cytometer is improved.

A cyclone separator assembly comprises a cyclone separator that removes large particles of dirt from a working airstream as it flows through the cyclone separator, and the separated large particles of dirt are deposited into a dirt cup. The cyclone separator assembly further includes a fine particle separation member comprising a plurality of apertures for separating fine particles of dirt from air in the cyclone separator or the dirt cup. The fine particle separation member can be formed in a wall of the cyclone separator, a sidewall of the dirt cup, or in the outlet of the cyclone separator assembly. The cyclone separator assembly can further include a guide plate for creating a direction change in the path of the working airstream to aid in the separation of fine particles of dirt from air passing through the outlet.

A cyclone separator assembly comprises a cyclone separator that removes large particles of dirt from a working airstream as it flows through the cyclone separator, and the separated large particles of dirt are deposited into a dirt cup. The cyclone separator assembly further includes a fine particle separation member comprising a plurality of apertures for separating fine particles of dirt from air in the cyclone separator or the dirt cup. The fine particle separation member can be formed in a wall of the cyclone separator, a sidewall of the dirt cup, or in the outlet of the cyclone separator assembly. The cyclone separator assembly can further include a guide plate for creating a direction change in the path of the working airstream to aid in the separation of fine particles of dirt from air passing through the outlet.

A method of capturing images using a laser scanner equipped with a 2D micro actuator. The 2D micro actuator allows for laser beam location without the use of additional components dedicated to determining beam location. The 2D micro actuator is used to stabilize the positioning function of the spot in the scene. The micro actuator is a 1D micro actuator suspended within a second framework by two torsion bars and two pairs of orthogonal additional electrodes. The image is scanned, a precise rectangle of the character sensing field is generated and the image is created by keeping a substantially constant pitch.

The invention discloses a titanium-based alloy induction melting bottom leakage type vacuum suction casting device and a control method, relates to the technical field of titanium-based alloy melting suction casting and solves the problems of low efficiency, high cost, complicated technology and the like of an existing titanium-based alloy melting suction casting device. The titanium-based alloy induction melting bottom leakage type vacuum suction casting device provided by the invention can be used for carrying out vacuum induction melting on titanium-based alloy by adopting a ceramic crucible; since no any shielding effect works on an electromagnetic force by ceramic, all electromagnetic induction energy generated by an induction coil can totally act on titanium metal, energy saving and environment protection are realized, the utilization rate of metal raw materials is up to 60%-70%, and the metal cost is greatly reduced; an isolating layer is formed on the inner surface of a crucible body of the ceramic crucible, materials which are used for manufacturing the isolating layer comprise yttrium oxide, the yttrium oxide has good inertia on the titanium metal under high temperature and can be used for isolating ceramic materials which can react with the titanium metal during a melting process, and titanium-based alloy melting is enabled to be reliably proceeded.

The invention discloses a bi-directional power converter control method based on a virtual synchronous motor, and relates to the field of bi-directional power control in alternating-current and direct-current mixed micro-grids. A bi-directional power converter is of a three-phase three-leg structure formed by a switch tube and provided with a direct-current-side capacitor and an alternating-current-side filter inductor, alternating-current-side output voltage of the bi-directional power converter is equivalent to exciting electromotive force of the synchronous motor, alternating-current-side grid voltage is equivalent to terminal voltage of the synchronous motor, filter inductance is equivalent to armature winding of the synchronous motor, the bi-directional power converter can serve as the virtual synchronous motor after equivalence is achieved, an inertia simulation unit of the bi-directional power converter is provided with the direct-current-side capacitor, bi-directional transmission of energy is achieved by the aid of a virtual frequency controller, a virtual excitation regulator and a virtual motor control unit, direct-current voltage variation and alternating-current frequency fluctuation are decreased, the bi-directional power converter has a certain inertia, dynamic response of a system is improved, and the stability of the system is improved.

The invention discloses a method for virtual inertia control of a bidirectional AC / DC converter. The method mainly comprises three parts, namely virtual inertia control, output current feedforward control and voltage and current double loop control. By the virtual inertia control, a DC side of the bidirectional AC / DC converter has relatively large virtual inertia, voltage fluctuation of a DC bus can be stabilized, the voltage-current sagging function can be achieved, and expansion of the system capacity by the bidirectional AC / DC converter through parallel connection is facilitated. By the output current feedforward control, the influence of a sudden change of power of the DC side on the DC bus voltage can be reduced, and the transient response performance of the system is improved. Proportional integral control is adopted by a DC voltage outer loop, a DC voltage command can be tracked without a static error; and feedforward decoupling control under a synchronous rotating reference frame is adopted by a grid-connected current inner loop, and a relatively low power grid current distortion rate can be ensured. By the virtual inertia control method, the DC side of the bidirectional AC / DC converter has relatively high inertia, great fluctuation of the DC bus voltage caused by the sudden change of the power of the DC side can be stabilized, and the voltage quality of the DC bus is improved.

The invention discloses a method and a system for direct-current microgrid virtual inertia control considering parameter self-optimization. The method comprises the steps that firstly, according to the response characteristics of a microgrid system in power fluctuation and the characteristic that the virtual inertia and the virtual damping coefficient of the microgrid system have flexibility and variability, the change condition of control parameters needed when disturbance occurs is analyzed and obtained, and a control strategy for self-optimization of the virtual inertia coefficient and thevirtual damping coefficient is provided accordingly; A small signal model is established to analyze the response characteristics of the DC / DC converter under the proposed DC microgrid virtual inertiaand damping coefficient self-optimizing control strategy, and the influence of key control parameters on the system response characteristics and the system stability is discussed. And finally, a direct-current microgrid model is established in PSCAD / EMTDC for simulation analysis, and the comparison result verifies the correctness and effectiveness of the provided control strategy.

The invention provides a combined type ocean power generation device. The combined type ocean power generation device comprises a base and a main body, wherein the main body is fixedly connected with the base; an upper cavity is arranged in the upper end of the main body; a lower cavity is arranged in the lower end of the main body; a sealing plate is arranged at the upper end of the upper cavity and rotationally connected with a rotary shaft; the rotary shaft is horizontally arranged, one end of the rotary shaft is fixedly connected with vanes, and the rotary shaft is connected with an input shaft of a generator through a speed reducer; a generator II is arranged in the upper cavity, a transmission structure capable of driving an input shaft of the generator II to rotate when the rotary shaft rotates is arranged between the input shaft of the generator II and the rotary shaft; a through hole is horizontally formed in the lateral wall of the lower end of the lower cavity, and a generator III is arranged in the through hole; a swinging generator is arranged at the outer end of the through hole; a ventilation hole is formed in the lateral wall of the main body and fixedly connected with a valve capable of controlling the ventilation hole to open and close; a plurality of base protecting devices are further arranged on the base. According to the combined type ocean power generation device, scouring of ocean currents to the base can be reduced, and wind energy and tidal energy are fully used for power generation.

A focused laser beam having an optical axis passes through a first lens mounted to a first galvanometer and a second lens mounted to a second galvanometer. The first galvanometer is adapted to tilt the first lens about a X axis and the second galvanometer is adapted to tilt the second lens about a Y axis. This displaces the focused laser beam in a controlled manner from the optical axis to enable laser machining of very precise geometric features over a large processing window. In a preferred embodiment, the first and second lenses are a pair of inverted positive meniscus lenses, of high index of refraction material.

The invention discloses a nitrogen-doped graphene catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: drying and dehydrating glucose and urea, and mixing with melamine, wherein the mass ratio of the urea to melamine is 2-4; uniformly grinding the mixture, and calcining the mixture into a muffle furnace at the temperature of 550 DEG C for 3 hours; cooling and grinding uniformly, adding the mixture into a tube furnace, introducing into nitrogen protection, calcining at the temperature of 850-1000 DEG C for an hour, thereby obtaining the nitrogen-doped graphene catalyst. According to the in-situ nitrogen-doped graphene disclosed by the invention, the used raw materials are low in price, the method is simple, the yield is high, and graphite-like nitrogen doped graphene with the highest ratio is obtained by changing the rate of the raw materials and the temperature, so that the catalyst has a good oxidation-reduction effect, and expensive Pt can be replaced to a certain degree.

The invention discloses a method of manufacturing a metal oxide thin film transistor with a top gate structure. The method comprises the following steps: a, a buffer layer is manufactured on a substrate; b, an opaque insulated light shielding layer and a metal oxide semiconductor layer are continuously deposited on the buffer layer, the manufactured metal oxide semiconductor layer is then patterned to serve as an active layer, the metal oxide semiconductor layer after being patterned, that is, the active layer serves as a self-aligned pattern, and the light shielding layer is patterned; c, a first insulated layer and a first metal layer are continuously deposited on the active layer, the first metal layer is then patterned to serve as a gate electrode, and then the patterned gate electrode is used to pattern the first insulated layer to serve as a gate electrode insulated layer by adopting a self-aligned method; d, a second insulated later is deposited and patterned to serve as a passivation layer; and e, second metal layers are deposited on the passivation layer and patterned to serve as source and drain electrodes. The light shielding layer is an amorphous carbon thin film or a hydrocarbon thin film or a diamond-like carbon thin film. The process is simple and the performance is excellent.

The present invention relates to a mass spectrometer that includes an ionization source having a chamber for ionizing a fluid sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber may be formed from an inorganic conductive nitride or disulfide material or may be applied to a substrate as a coating. The invention also includes a method for reducing the interaction of a reactive analyte with the inner wall of the chamber by application or coating the inner wall of the chamber with an inert conductive material.

A high inertia driver system for a fastening tool having an electric motor that drives a flywheel to contact a driver blade to drive a fastener into a workpiece. The high inertia driver system also has a return system which prevents the unintentional driving of a second fastener. The return system uses a return spring that controls the recoil energy of the driver blade after driving a fastener into a workpiece. The system achieves a long operational life for the fastening tool by increasing the number of return cycles of the driver blade free of a return spring failure.

An air-flow measuring device for measuring respiratory performance includes a valve having at least one rotary blade for detecting air-flow through the device. The valve includes at least one air-directing aperture which alters the direction of air-flow incident on said valve from a first direction onto a second altered direction. The second direction is perpendicular to the first direction and to the planar surface of the rotary blade. The direction-altered air-flow provides a force which causes the rotary blade to move. An optical transducer measures the rotation of the blade to determine air-flow parameters in the device.

A printing apparatus prints on a medium at a first transport speed or a second transport speed lower than the first transport speed. The printing apparatus includes: an image forming unit for forming a developer image on the medium according to a print job sent from a host device; a fixing unit for fixing the developer image on the medium; a discharge roller for discharging the medium; a discharged medium detection unit for detecting a trailing edge of the medium passing through the fixing unit; a last medium determining unit for determining whether the discharged medium detection unit detects a last medium of the print job; and a control unit for discharging the medium at the first transport speed or controlling the last medium determining unit to determine the last medium and discharging the last medium at a transport speed higher than the second transport speed.

The invention provides a control method and a control system for wind power participating frequency modulation of an electric power system. The control method comprises regulating and controlling the frequency of the electric power system by using rotor kinetic energy and a storage battery energy storage system. According to the control method for wind power participating frequency modulation of the electric power system based on combined effect of the rotor kinetic energy and the storage battery energy storage system, the wind energy is sufficiently utilized, the configuration capacity of the energy storage system is reduced, and the economical efficiency of wind field operation is improved. The control method and the control system can also play better roles even under the condition of relatively great load disturbance.

The invention provides a computing method for an unsteady flow field of rotary impeller machinery based on a three-dimensional dynamic mesh. The method is applied to the technical field of rotary impeller machinery, is based on the technology of three-dimensional dynamic mesh, realizes the compute of the unsteady flow field of rotary impeller machinery, and has higher iteration speed compared with the traditional sliding mesh method.

A trunk lid for a motor vehicle includes an inner lining, a rear window, and a structural reinforcement. The structural reinforcement includes an upper portion which defines a rear-window opening and a lower portion which extends the upper portion toward the bottom of the trunk lid. The structural reinforcement is made in a single piece of a polymer material. An outside of the structural reinforcement is completely covered at least by the rear window and an outer covering panel placed beneath the rear window. An inside of the structural reinforcement is completely covered by the inner lining. The structural reinforcement and the inner lining interact to form a first hollow frame, of a first closed section, surrounding the rear-window opening, and to form a second peripheral hollow frame, of a second closed section, that is close to the outer edges of the trunk lid.

The invention relates to a kind of redundantly driven active over-constraint three-degree-of-freedom parallel machine tool, which includes a moving platform 1, a fixed platform 2, and a first kinematic branch group 3, a second kinematic branch group 4, and a moving platform connected to the fixed platform. The third movement branch group 5, the fourth movement branch group 6, the structure of the first movement branch group and the second movement branch group are exactly the same, and the servo drive unit connects the branch body and the Hooke hinge through the rotating pair Connected with the moving platform, the third motion branch chain group is connected to the branch chain body through the Hooke hinge by the servo motor unit and connected to the moving platform through the Hooke hinge, and the fourth motion branch chain group is connected to the branch chain body by the servo drive unit through the Hooke hinge And the Hooke hinge or compound spherical hinge is connected with the moving platform. The invention synthesizes a three-degree-of-freedom parallel machine tool with two rotations and one movement, which has the advantages of simple branch chain, symmetrical structure, high degree of recombination and modularization, strong load capacity, excellent comprehensive performance, large working space, and avoidance of singular configurations, etc. It has good engineering practical application prospects.

The invention relates to a soilless culture substrate. The substrate is coconut coir processed into blocks, is processed from coconut husk, and is 5.5-6.5 in pH value. The soilless culture substrate specifically comprises 650g of coconut bricks, 5kg of coconut coir and 5kg of coconut blocks, wherein the coconut bricks are water-washed desalted coconut bricks of which the particle sizes are 6 millimeters, the sizes are 20*10*6 centimeters and the weights are 640- 660g; the coconut bricks can be used after being fully soaked to 6-7 liters; the coconut coir is water-washed desalted coconut coir of which the particle size is 6 millimeters, the size is 30*30*13 centimeters and the weight is 4,950-5,050g; the coconut coir can be used after being fully soaked to 60-70 liters; the coconut blocks are desalted medium-grained particles of which the particle sizes are 1-1.5 centimeters and the sizes are 30*30*15 centimeters. According to the method, broken coconut husk with higher permeability and inertia than perlite and vermiculite is taken as the substrate. The coconut coir is naturally degradable, so that environmental pollution is prevented. The substrate can be used circularly, is clean and sanitary, and has high cost performance; water and fertilizers are saved, and the quality and yield of crops are improved.

The invention discloses a carboxylated carbon nanotube catalyst carrier as well as a preparation method and application thereof. The preparation method of the carboxylated carbon nanotube catalyst carrier comprises the following steps of: putting carbon nanotubes in the mixed liquid of concentrated HNO3 and concentrated H2SO4 in a volume ratio of (1: 3)-(3: 2) and performing constant-temperature reflux treatment in the range of 80-95 DEG C for 100-120 minutes, and then washing and drying, thereby obtaining the carboxylic carbon nanotube catalyst carrier. The catalyst carrier is used for preparing Pt / CNT catalyst; the obtained Pt / CNT catalyst is used as an air cathode material for preparing a single-cavity membrane-free air cathode microbial fuel cell. The rich oxygen-containing groups are introduced on the surface of the catalyst carrier prepared by the method, so that the oxygen reduction effect of the catalyst is improved; and the Pt / CNT catalyst prepared from the catalyst carrier succeeds in starting MFC (Micro Function Circuit) so that the start period of MFC is shortened, the internal resistance of MFC can be reduced and the output voltage of MFC also can be greatly increased.