37results about How to "Increase the oscillation amplitude" patented technology

A powered dispenser for dispensing individual sheet segments from a continuous roll of sheet material provided with spaced tear lines comprises a powered feed mechanism, a releasable, powered drive mechanism, a powered transfer mechanism, a pair of web sensing sensors, a capacitive sensing system providing automatic sensitivity adjustment, and control circuitry. A dual power supply system provides a mechanical lock-out functionality, and the control system is protected from electrostatic build-up on the surface of the feed roller. The web sensor, and an antenna plate of the capacitive sensing system, are provided on respective printed circuit boards mounted in overlying relation. Utilizing signals received from the pair of web sensors and the capacitive sensing system, the control circuitry senses the presence of a user to activate the powered drive mechanism, and prevents further dispensing of the sheet material until a previously dispensed segment is separated from the roll. The web sensors detection of a leading edge of the sheet material initiates a predetermined interval of sheet material advancement providing a proper placement of successive tear lines. Various approaches may be utilized to accommodate inadvertent sheet “tabbing” scenarios. The web sensors, together with the control circuitry, are also used to detect the depletion, or absence, of a working roll of sheet material, whereupon the control circuitry controls the powered transfer mechanism to automatically transfer the web feed supply from a depleted working roll to a reserve roll. The powered transfer mechanism may include a motor driven transfer bar, or provide motor driven release of a spring biased transfer bar. Another arrangement allows for ready release of a roll core, and drop of the same into an open dispenser cover for removal.

This present invention provides a power supply for implanting into a patient's body and providing electricity to a load within the body, said power supply comprising an enclosure; adapted for optimizing an activating force by mechanisms of orienting thereof; the power supply further comprising (a) a piezoelectric micro-generator comprising (b) electrical energy storing means; (c) control unit adapted for managing charging and discharging said storing means said control unit further provided with means for decoupling said piezoelectric element from and connecting to said electrical energy storing means to increase efficiency of said power supply.

A powered dispenser for dispensing individual sheet segments from a continuous roll of sheet material provided with spaced tear lines comprises a powered feed mechanism, a releasable, powered drive mechanism, a powered transfer mechanism, a pair of web sensing sensors, a capacitive sensing system providing automatic sensitivity adjustment, and control circuitry. A dual power supply system provides a mechanical lock-out functionality, and the control system is protected from electrostatic build-up on the surface of the feed roller. The web sensor, and an antenna plate of the capacitive sensing system, are provided on respective printed circuit boards mounted in overlying relation. Utilizing signals received from the pair of web sensors and the capacitive sensing system, the control circuitry senses the presence of a user to activate the powered drive mechanism, and prevents further dispensing of the sheet material until a previously dispensed segment is separated from the roll. The web sensors detection of a leading edge of the sheet material initiates a predetermined interval of sheet material advancement providing a proper placement of successive tear lines. Various approaches may be utilized to accommodate inadvertent sheet “tabbing” scenarios. The web sensors, together with the control circuitry, are also used to detect the depletion, or absence, of a working roll of sheet material, whereupon the control circuitry controls the powered transfer mechanism to automatically transfer the web feed supply from a depleted working roll to a reserve roll. The powered transfer mechanism may include a motor driven transfer bar, or provide motor driven release of a spring biased transfer bar. Another arrangement allows for ready release of a roll core, and drop of the same into an open dispenser cover for removal.

A mass flowmeter and a method for operating a mass flowmeter is based on the Coriolis principle and incorporates a Coriolis measuring tube, an oscillator associated with and stimulating said Coriolis measuring tube, and a transducer associated with the Coriolis measuring tube and which collects Coriolis forces and / or oscillations based on Coriolis forces. The electric power consumed in the mass flowmeter is controlled as a function of the available electric power. This permits the efficient use of the available electric power, thus permitting the operation of the mass flowmeter via a two wire interface that serves for both the input of electric power and the output of measuring data.

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.

In a control device for controlling a variable element of a wheel suspension system, the variable suspension element associated with one of the wheels is controlled at least according to an output of a sensor associated with a different one of the wheels. The output of the sensor may include a sprung mass speed of a vehicle part associated with each wheel. The variable suspension element may include a variable damping force damper or a variable spring constant spring. Thereby, an undesired response of a vehicle body can be avoided even when a vehicle is subjected to an uneven distribution of wheel loads such as when the vehicle is traveling over a slanted road surface or making a turn.

An oscillator, comprising: a pair of transistors to which source terminals are interconnected and to which drain and gate terminals are coupled by a positive feedback loop comprising an oscillator tank, wherein the source terminals of the transistors are connected to a current source configured to control physical parameters of the oscillator.

A device (10) for feeding bulk material items (12) from a large mass into a randomly re-alignable, individually portioned disentangled position within the reach of a robot (18). A vision system comprising a camera (26) or a sensor records the number, position and alignment of the separated bulk material items (12). A processor (56) processes the sensor signals and generates control commands in actuators. The entire surface area of a one-piece oscillating conveyer surface (16) is supported by an oscillating conveyor arm (44). The surface lies on top of the arm and is horizontally displaceable in the x- or the x- and y-direction, extending together with the oscillating conveyor arm (44) and projecting in a freely supported manner from a storage zone (40) across a distribution zone (42) up to one front end of a selection zone (28) for the bulk material items (12). An oscillating motion (S) is generated in the z-direction with a continuously increasing amplitude (A) in the x-direction. The oscillating motion (S) alternates or is at least partially synchronous and co-ordinated with a forward feed or reverse transport of the bulk material items (12) in the x- or x- and y-direction.

The invention relates to an electromagnetic type nonlinear resonance upscaling vibration energy collecting device, comprising two grades of vibrating systems, wherein the first grade comprises low frequency / high frequency vibration energy collecting subsystems, and copper coils of two collecting systems are vibrated in a nonuniform magnetic field, and generates power energy to output; the second grade vibrating system comprises a supporting spring, a permanent magnet combination and a first grade system. When vibration happens, the second grade vibrating system is under a resonance state, and the vibration response is odd harmonic component, primary and third harmonic components mainly; as the basic excitation, the low frequency collecting subsystem and the high frequency collecting subsystem are under a resonance state. The vibration energy collecting device can redistribute the vibration energy concentrated at low frequency to low frequency and high frequency vibrations. The invention is applicable to the vibration energy collection of aerospace, ship, and bridge building engineering structures, and particularly applicable to the engineering environment with weak vibration intensity; the device can provide power energy for the energy self-supply device and the wireless sensor network in the vibration control and health monitoring system.

There is described a method and an inking apparatus (50) for forming an ink pattern (80) on the surface of a form cylinder (15b) of a printing press, which ink pattern (80) exhibits, at least in part, a two-dimensional ink gradient extending in an axial direction and a circumferential direction on the surface of the form cylinder (15b). At least first and second chablon cylinders (20, 25) are placed one after the other along an inking path of the ink train (20, 25, 30, 31, 32, 33, 34, 35a, 35b, 36, 37) inking the form cylinder (15b) for distributing ink in the axial and circumferential directions and means (200, 201, 210, 211, 212, 250, 251, 260, 261, 262) are provided for subjecting the first and second chablon cylinders (20, 25) to cyclical oscillation movements in the axial direction and the circumferential direction.

There is described a method and an inking apparatus (50) for forming an ink pattern (80) on the surface of a form cylinder (15b) of a printing press, which ink pattern (80) exhibits, at least in part, a two-dimensional ink gradient extending in an axial direction and a circumferential direction on the surface of the form cylinder (15b). At least first and second chablon cylinders (20, 25) are placed one after the other along an inking path of the ink train (20, 25, 30, 31, 32, 33, 34, 35a, 35b, 36, 37) inking the form cylinder (15b) for distributing ink in the axial and circumferential directions and means (200, 201, 210, 211, 212, 250, 251, 260, 261, 262) are provided for subjecting the first and second chablon cylinders (20, 25) to cyclical oscillation movements in the axial direction and the circumferential direction.

A musical instrument soundboard including a resonant layer affixed to a base layer by an acoustic coupling layer. The resonant layer can be sheets, plates, flakes, granules and powders formed of metal, crystal, glass, and ceramic. A protective layer is positioned atop the resonant layer. When formed into a musical instrument, the soundboard is highly resonant so as to provide the musical instrument with excellent tone.

The invention discloses a pile foundation permeable bulwark integrating the power generation function and an achieving method, and belongs to the field of bulwarks. The pile foundation permeable bulwark comprises an air chamber, an air turbine, a power generator set, a wave baffle, a beam and a pile foundation. The air chamber is composed of an air chamber front wall, an air chamber top plate and an air chamber rear wall. The air chamber front wall is located on the wave facing side. The air chamber top plate is provided with an airflow channel. The air turbine and the power generator set are arranged in the airflow channel. The wave baffle is located below the air chamber rear wall. The beam is arranged between the pile foundation and the air chamber. Under the premise that the bulwark plays an original wave stopping and eliminating role, the wave energy power generation function is integrated, composite function utilization of traditional buildings is achieved, and environment friendliness is achieved. Meanwhile, the pile foundation permeable design is adopted in the bulwark, exchange of water inside and outside a port is allowed, and environment friendliness is obvious.

An oscillator is oscillatable in a predetermined direction. First and second driving electrodes are secured to the base and apply an electrostatic force to the oscillator to make drive oscillation of the oscillator in the predetermined direction. At the time of the drive oscillation of the oscillator, a predetermined electric charge is accumulated in the oscillator, and electric charges of opposite polarities are alternately and periodically accumulated in the first and second driving electrodes, respectively, to exert an attractive force between the oscillator and a corresponding one of the first and second driving electrodes and also to exert a repulsive force between the oscillator and the other one of the first and second driving electrodes, and vice versa.

Methods are disclosed for detecting and lessening fuel starvation conditions in an operating fuel cell system. The fuel cell systems comprise a solid polymer electrolyte fuel cell with a regulating apparatus for regulating the pressure of fuel supplied to the anode inlet of the fuel cell, in which the outlet pressure from the regulating apparatus oscillates during operation. The methods involve monitoring an electrical output of the fuel cell during operation, determining the amplitude of oscillation in the electrical output, and then, if the determined amplitude of oscillation in the electrical output exceeds a predetermined amount thereby indicating a fuel starvation condition, taking a remedial action to lessen the fuel starvation condition.

A power supply ECU is configured to carry out extreme value search control for searching for a frequency at which a detected value of power loss is minimized, by oscillating a frequency of output power from an inverter. Then, the power supply ECU determines whether or not extreme value search in extreme value search control is poorly proceeding, and when extreme value search is poorly proceeding, the power supply ECU increases an amplitude of frequency oscillation of output power from the inverter.

A method for assisting the oscillating starting process of an electromechanical oscillator (10) has the following steps: detection of oscillator oscillations (1b, 1c) which occur in the output signal (1a) from the electromechanical oscillator (10); generation of an excitation pulse (3b) on the basis of a detected oscillator oscillation (1c); and feeding (3a) of the excitation pulse (3b) to the electromechanical oscillator (10).

A downhole acoustic emitter including a support housing with a cavity and ports, in which housing are disposed a rod-type magnetostrictive transducer with an electrical coil on the rods, and an acoustic waveguide in the form of a cylinder which transitions into a tapering cone. The cylindrical portion of the acoustic waveguide is disposed inside the support housing, and the conical portion is disposed outside the housing. The upper end surface of the acoustic waveguide is coaxially joined to the lower emitting surface of the magnetostrictive transducer by soldering, and the acoustic waveguide is joined at its middle portion, which coincides with the zero vibration point of the waveguide, to the support housing by a threaded joint. The downhole acoustic emitter is provided with an emitting element, the upper end of which is coaxially joined to the lower end of the acoustic waveguide by a threaded joint. The magnetostrictive transducer has a length of 200-280 mm and is made of Permendur, and the ports are arranged around the perimeter of the support housing in two rows, the first of which is level with the top turns of the electrical coil of the magnetostrictive transducer, and the second row is level with the bottom turns of the coil. The emitting element is in the form of a cylinder or a prism with a square cross-section.

The invention discloses a two-stage ultra wide band Colpitts chaotic oscillator, which comprises a frequency selection network unit, a first-stage bias unit, an inter-stage coupling unit, a second-stage bias unit, radio frequency triodes and an output unit, wherein the radio frequency triodes comprise a first radio frequency triode Q1 and a second radio frequency triode Q2. The two-stage ultra wide band Colpitts chaotic oscillator is based on a traditional Colpitts chaotic oscillator, the frequency selection network unit adopts a common collector to replace a common base, and an output signalof the first-stage bias unit is output by a collector, so that the oscillation amplitude of a chaotic signal is improved; the on-load capacity of a chaotic circuit is improved, so that the chaotic signal output frequency spectrum is flatter, and the circuit is more suitable for the field of ultra-wideband communication; and the amplitude of the frequency spectrum of a high-frequency signal is improved through energy storage, and the output of a ultra-wideband chaotic signal is realized.

An oscillating firing system for targeted adjustment / readjustment of amplitudes of oscillations of static pressure and / or hot gas velocity in an oscillating firing system for thermal treatment of materials or materials synthesis includes at least one burner, with which an oscillating (pulsating) flame is generated, and at least one combustion chamber (resonator), into which the flame is directed. Upstream of the burner outlet an oscillation volume is inserted into the supply lines leading to the burner through which oscillation volume air, fuel or fuel-air mixture can flow. Preferably, the size of the oscillation volume may be adjustable. Thus, it is possible to change the amplitude of oscillation.

The invention provides a fully-rotating aeration device for sewage treatment for water resource utilization. According to the fully-rotating aeration device for sewage treatment for water resource utilization, rotating columns are fixedly mounted at the top ends of foaming pipes, oxygen cylinders are communicated between the adjacent foaming pipes, piston plates are slidably mounted in the oxygen cylinders, and cambered surface plates are movably connected to the top ends of the piston plates and the rotating columns; and the bottom end of the cambered surface plate is movably connected with a swing frame. In the polymerization process of the cambered surface plate, the rotating column is pressed to be downward, a foaming pipe at the bottom of the rotating column rotates in the downward process by utilizing the combination of an inclined groove in the surface and a fixed column in a treatment box, and a piston plate is extruded when the cambered surface plate moves to the innermost end, so that oxygen in the oxygen cylinders is discharged from the rotating foaming pipe; and when vertical plate frames move towards the inner side at the same time, arc blocks on the inner sides of the vertical plate frames make contact with wheel attaching rods at the bottom of a sewage pool to drive the interior of the sewage pool to continuously oscillate, so that the water flow disturbance amplitude of the sewage pool is increased in the rotary aeration process, and air generated by aeration can be fully dispersed and refined.

The invention discloses a three-dimensional pulsating heat pipe heat radiation and cooling device with a flat plate microchannel evaporator. The three-dimensional pulsating heat pipe heat radiation and cooling device comprises the metal plate evaporator and capillary pipes, wherein a microchannel array is arranged in the metal plate evaporator. The bottom face of the metal plate evaporator is used for being connected with a high-power microelectronic device or an LED lamp. Microchannels in the metal plate evaporator are arranged between the upper surface and the bottom face of the metal plate evaporator. End openings of the microchannels are formed in the left side and the right side of the metal plate evaporator. The left end of one capillary pipe is in sealed connection with the end opening of the microchannel at the rearmost end of the left side of the metal plate evaporator, and the other end of the capillary pipe is in sealed connection with the end opening of the microchannel at the headmost end of the right side of the metal plate evaporator. The left ends of the rest of the capillary pipes are in sealed connection with the end openings of the previous microchannels on the left side of the metal plate evaporator, and the other ends of the rest of the capillary pipes are in sealed connection with the end openings of the next microchannels on the right side of the metal plate evaporator. The capillary pipes communicate with the microchannels to form a three-dimensional space loop structure. Cooling working media are injected in the microchannels and the capillary pipes.

A method of performing mass spectrometric analyses, comprises: (a) passing a stream of ions through a quadrupole mass analyzer; (b) intercepting a flux of ions emitted from an exit aperture of the quadrupole mass analyzer at a front face of a stack of multichannel plates and emitting a flux of electrons in response to the intercepted flux of ions at a rear face of the stack of multichannel plates; (c) intercepting the flux of electrons at a front surface of a scintillator comprising a phosphorescent material and emitting a flux of photons in response to the intercepted flux of ions at a rear surface of the scintillator; (d) receiving the flux of photons at a photo-imager; and (e) repositioning at least one of the scintillator and the stack of microchannel plates during the execution of one or more of the steps (a) through (d).

The invention relates to a method for optimizing crude oil dehydration parameters of a pulsed electric field, the method is carried out by utilizing a crude oil dehydration test device of the pulsed electric field and is completed by the following steps of: (1) determining an electric field construction distance; (2) pulse electric field parameter expression considering dehydration medium response; (3) constructing a pulse electric field parameter optimization sequence; (4) optimizing the frequency deviation series; and (5) optimizing the electric field intensity and the duty ratio, completing the optimization of the crude oil dehydration parameters of the pulsed electric field, and obtaining optimized design values of the pulsed electric field parameters (f *, E * and D *). According to the method, the M-N step pulse electric field parameter optimization sequence is established, and the two-dimensional plane sequence of the three-dimensional space sequence under a certain frequency deviation series is used as a discrete point of electric field parameter optimization, so that the optimization of multiple parameters and multiple variables is scientifically simplified, the parameter tuning range is greatly reduced, and the practicability and the accuracy of a parameter optimization design result are effectively improved.

The invention discloses an oscillator (300), comprising: a pair of transistors (301, 303), the sources (SOURCEA, SOURCEB) of which are connected to each other, and the drains (DRAINA, DRAINB) and the gates (GATEA, GATEB) are composed of A positive feedback loop including an oscillator tank circuit (309) is coupled. Wherein, the sources (SOURCEA, SOURCEB) of the transistors (301, 303) are connected to a current source (305) configured to control the physical parameters of the oscillator (300).

The invention relates to a boost circuit, and discloses a DC boost circuit. The boost circuit comprises a DC power supply, a transformer, an N trench JFET (junction field-effect transistor), and a frequency selective network. The positive electrode of the DC power supply is connected with a first port of a primary side of the transformer, and the negative electrode of the DC power supply is connected with the source electrode of the N trench JFET. A second port of the primary side is connected with the drain electrode of the N trench JFET. A first port of a secondary side of the transformer is connected with a first port of the frequency selective network, and a second port of the second side is connected with the lowest electric potential of the DC boost circuit. A second port of the frequency selective network is connected with the grid electrode of the N trench JFET, and a third port of the frequency selective network is connected with the lowest electric potential. An output end of the DC boost circuit is connected with the first port of the secondary side of the transformer. Compared with the prior art, the boost circuit can increase an extremely low voltage (less than 100mV) to a proper electric potential, so as to supply power to a load.

The invention provides a near-shore reflective wave energy concentrating power generation device, and belongs to the field of wave energy power generation and marine engineering equipment. The technical problem existing in the prior art that, a single point suction type power generation device has low power generation power and low conversion efficiency is solved. The near-shore reflective wave energy gathering power generation device includes an energy concentrating arc-shaped wall, two sets of rigid arm connecting rods, a float and two sets of hydraulic power generation systems. The bottom of the energy concentrating arc-shaped wall is fixed to the bottom of the sea, the height of the energy concentrating arc-shaped wall above the water surface is higher than the height of the wave surface after energy concentrating. The float and the inner wall of the energy concentrating arc-shaped wall are movably connected by the two sets of rigid arm connecting rods. Each set of the rigid arm connecting rods includes two parallel rigid arms, and each of the two parallel rigid arms, the energy concentrating arc-shaped wall and the float form a corresponding parallelogram movable mechanism. The two sets of hydraulic power generation systems are separately connected with the two sets of rigid arm connecting rods in a one-to-one correspondence mode. The near-shore reflective wave energy concentrating power generation device is applied to near-shore power generation, fundamentally improves the power generation power, reduces the power generation cost, and is simple in design, long in service life and easy in modular application.

The utility model relates to a near-shore reflective wave energy gathering power generation device, which belongs to the field of wave energy power generation and ocean engineering equipment. The invention solves the technical problems of low generating power and low conversion efficiency of a single point-suction power generation device in the prior art. Technical points: including energy-gathering arc wall, rigid arm link, float and hydraulic power generation system; the bottom of the energy-gathering arc-wall is fixed on the seabed, and the height above the water surface is higher than the wave surface height after energy-gathering; the float and energy-gathering arc Two sets of rigid arm connecting rods are used to move between the inner walls of the wall; each set of rigid arm connecting rods includes two parallel rigid arms, and the two parallel rigid arms form a parallelogram movable mechanism with the energy-gathering arc wall and the float; Two sets of hydraulic power generation systems are respectively connected with two sets of rigid arm connecting rods in one-to-one correspondence. The invention is used for near-shore power generation, fundamentally improves power generation, reduces power generation cost, has simple design, long service life, and is easy to apply in modules.