129 results about "Power added" patented technology

A controller, either a microprocessor or finite state machine, is used to generate a pulse train whose frequency and duty cycle can be varied to alter the frequency and amplitude of the output of a driven audio transducer. The ability to control both frequency and amplitude allows programmatic synthesis of many audio effects such as steady tones, warbles, beeps, sirens and chimes with no hardware or circuit changes. The transducer can be a piezoelectric bender or a speaker. The output of the controller controls a switch that builds current in an inductor when the switch is on. When the switch is turned off, the energy stored in the inductor is dumped into the audio transducer, either directly or through intermediate capacitor storage. This allows the generation of voltages across the transducer many times the supply voltage. By the use of two outputs from the controller the drive circuit can be duplicated with the duplicate driving the other terminal of the audio transducer with a signal out of phase from the original signal, the resulting push-pull drive can quadruple the output power. The ability to programmatically modify the frequency and amplitude within the controller allows the use of a feedback input to an internal voltage discrimination circuit to modify the audio signal in response to a variety of inputs. The audio transducer drive frequency can be adjusted to maximize a feedback signal related to the drive power. This allows adaptive maximization of the output for resonant transducers such as piezoelectric benders. The control signal can be the ambient noise so the output amplitude is louder with high ambient noise and at a less annoying level when there is no background noise.

A method of correcting the effects of a bend angle of 200 degrees or larger of spectacle frames, and astigmatism correcting characteristics in such spectacle frames. An exemplary embodiment of the present invention includes a design method for a spectacle lens mounted in a spectacle frame having a bend angle of 200 degrees or larger including an astigmatic power adding step, on the object side refractive surface or eyeball side refractive surface of the spectacle lens, for canceling astigmatic aberration caused by the bend angle of the spectacle frame, at a design reference point of the spectacle lens, and a step setting prismatic power by tilting the refractive surface, which is on an object side or an eyeball side, of the spectacle lens for canceling prismatic power caused by the bend angle of the spectacle frame, at the design reference point of the spectacle lens.

A power add-on device for powering a manual wheelchair includes a motorized component including dual electric motors and a power source electrically coupled to the electric motors, wherein each of the motors is configured to turn a respective one of a set of drive wheels. The power add-on device includes a latching mechanism adapted to attach the power add-on device to the camber tube of the manual wheelchair; and a controller, reachable by a person sitting in the manual wheelchair, that controls the latching mechanism, the motors, and a swing arm that allows the rear wheels of the manual wheelchair to be lifted off the ground. The front wheels of the manual wheelchair are allowed to be lifted several inches off the ground to avoid obstacles, or can be lifted by the user leaning back. Advantageously, the power add-on device can be detached from the manual wheelchair and loaded into the trunk of a car when travelling or may be checked in as baggage when flying.

Provided is a chest expander including: a head having a spring installation part at which a spring is installed and arm connection parts installed at both sides of the spring installation part; a pair of arms pivotally coupled with the arm connection parts of the head at their upper ends; a spring member vertically installed at the spring installation part of the head, and converting movement of the pair of arms approached toward each other into a resilient force generated by compressing or extending the spring to vertically transmit the resilient force to the arms; a pair of links having first ends connected to each arm and second ends extending between the arms; and a spring operation part having a link connection part connected to the second ends of the links and compressing or extending the spring member using power added and transmitted to the link connection part through the links by the movement of the arms.

The invention relates to a method of an optimal arrangement in time of a laser emitter and a detector for a remote sensing application, comprising: —setting a target time unit integration time t_p; —translating said time unit integration time into a reduced time τ_p and its corresponding power increase factor η⁻¹; —activating both the laser emitter, with a power output corrected by η⁻¹, and the detector for a duration of τ_p; —deactivating the emitter and detector after duration τ_p; —keep emitter and detector off for the subsequent duration t_off=t_p−τ_p.The invention further relates to a device implementing said method.

The invention belongs to the power system calculating and analysis technology field, and is applicable to calculate limit powers of associated electricity transmission cross-sections considering static, transient and dynamic security and stability constraints. The limit power calculating method of associated electricity transmission cross-section based on parallel calculating model comprises the steps of firstly calculating a static security limit, and then calculating security and stability limits of the transient and dynamic, on the basis of estimating the power increasing amount of each cross-sections considering over loading security of equipment; classifying the power increasing space of each cross-sections in turn according to the examined failure number and the example calculating capability of a parallel processing platform, and carrying out security and stability calculations for the run modes of different electricity transmission power combinations of each cross-sections by parallel example; judging whether to carry out security and stability calculations of the next round according to the precision requirement of limit calculation after all examples of the round being calculated, and filtering the examined failure set before each round of calculation; and finally, calculating mutual influence factors between limit powers of each cross-sections by analyzing the limitcalculation process information.

A power add-on device for powering a manual wheelchair includes a motorized component including dual electric motors and a power source electrically coupled to the electric motors, wherein each of the motors is configured to turn a respective one of a set of drive wheels. The power add-on device includes a latching mechanism adapted to attach the power add-on device to the camber tube of the manual wheelchair; and a controller, reachable by a person sitting in the manual wheelchair, that controls the latching mechanism, the motors, and a swing arm that allows the rear wheels of the manual wheelchair to be lifted off the ground. The front wheels of the manual wheelchair are allowed to be lifted several inches off the ground to avoid obstacles, or can be lifted by the user leaning back. Advantageously, the power add-on device can be detached from the manual wheelchair and loaded into the trunk of a car when travelling or may be checked in as baggage when flying.

A base station device includes: reception means for receiving an uplink reference signal transmitted at a certain cycle Tref from a user device; means for preparing transmission power control information indicating whether to modify the transmission power Pref of the uplink reference signal to be transmitted later, according to the reception quality of the uplink reference signal transmitted at a certain moment; means for obtaining first offset power information so that an uplink control signal is transmitted by the uplink reference signal transmission power added by a first offset power deltaL1L2; means for obtaining second offset power information so that an uplink data signal is transmitted by the power Pref added by a second offset power deltadata; and means for reporting the transmission power control information, the deltaL1L2, and the deltadata to a user device. The transmission power control information is reported to the user device with a cycle longer than Tref.

The invention discloses a method and a system for calculating output power of a water cooling photovoltaic-solar thermal integrated power generation system based on three-dimensional trapezoidal fuzzy. The method comprises the steps of calculating a temperature reduction value of a photovoltaic power generation panel and calculating an output power increment value of the photovoltaic power generation panel; calculating a three-dimensional generalized trapezoidal fuzzy set of a multi-value fuzzy uncertainty relation of output power and sunlight intensity of a water cooling photovoltaic system, and calculating effective sunlight intensity of a predetermined region by utilizing the three-dimensional generalized trapezoidal fuzzy set; calculating generation power of the photovoltaic power generation panel of the water cooling photovoltaic system and an available high-temperature high-pressure steam quantity of the water cooling photovoltaic system; calculating an electrical efficiency increment value of a water cooling solar thermal system; calculating generation power of the water cooling solar thermal system; and calculating the output power of the water cooling photovoltaic-solar thermal integrated power generation system. The output power of the water cooling photovoltaic-solar thermal integrated power generation system can be accurately predicted, so that necessary technical support is provided for distributed new energy power generation and intelligent power grid dispatching operation.

The invention discloses a multi-terminal flexible direct current system droop control method comprising secondary adjustment of voltage and frequency. The method includes specific steps: presetting aninitial reference value; measuring a direct current voltage Udc, an active power P and a frequency f of an alternating current power grid at the beginning of a control period; calculating a deviation[delta]Udc of the direct current voltage Udc deviated from a set value; calculating an active power added value [delta]Pdc required by secondary adjustment of the direct current voltage; calculatinga required active power added value [delta]Pf; calculating a droop deviation er between the direct current voltage and the active power; calculating a d-axis reference current idref required by an inner ring current controller; transmitting the d-axis reference current idref to the inner ring current controller to calculate a modulation pulse required by a direct current converter station; and waiting for the next control period and repeating the above steps. According to the control method, the power distribution characteristic and the frequency adjusting capability of the conventional methodare maintained, the direct current voltage is slowed to the set value after the end of a transition process, and the reliable operation capability of a multi-terminal flexible direct current system is enhanced.

A magnetic head for data recording having a pair of heating elements that self regulate in response to temperature to distribute heat for thermal actuation. The head includes a first heating element located adjacent to the read sensor and away from the writer, and a second heating element located adjacent to the writer. The first and second heating elements have different coefficients of thermal resistance that cause the heating of the second heating element to increase relative to that of the first heating element when the overall temperature increases or when power provided by a power source increases. There, thereby prevents the read sensor from extending too much and possibly contacting the disk.

Changes in instructions for increasing/decreasing transmission power that have been decoded from TPC bits are monitored, and when the increase/decrease instructions in a prescribed time interval are biased toward instructions for increasing the transmission power, the peak direction or main lobe width of the transmission beam is changed by regulating the transmission power or transmission antenna weights that correspond to each of a plurality of antenna devices. These processes are repeated until the bias toward instructions for increasing the transmission power in the instructions for increasing/decreasing transmission power is eliminated or until the number of changes of the transmission beam reaches a maximum value that has been set in advance.

The invention relates to a mineral processing process for multi-metal sulfide minerals containing secondary copper, and belongs to the technical field of mineral processing. According to the method of the mineral processing process for multi-metal sulfide minerals containing the secondary copper, iron powder with the particle size of 1 mm to 150 mm is selected for preparing suspension liquid with the concentration of 1 percent to 10 percent; iron powder with the amount of 0.1 to 1 percent of the mass of solid ore in the ore pulp is added to a mill or an agitator tank, and subsequently conventional flotation method is carried out to obtain final concentrate products; the iron power added into the mill and ore particles form primary batteries, dissociative copper ions in the ore pulp are replaced, excitation of the dissociative copper ions on blende and pyrite is reduced, the floatability difference among the minerals is enlarged, the phenomenon that concentrate products containing one another is reduced, and therefore the index of mineral separation products is improved. The method has the advantages of being good in flotation index, saving chemical, and simplifying mineral processing flow.

The invention discloses a direct-current send-out power-grid ultra-low frequency oscillation restraining method and a system thereof. The method comprises the following steps that low-pass filtering is performed on collected frequency signals; after oscillation generated by a power grid satisfies a preset ultra-low frequency oscillation criterion, according to a frequency deviation signal, a control signal is generated; and a direct current valve control system adjusts direct current output power according to the control signal and increases system positive damping so as to reach a purpose of restraining ultra-low frequency oscillation. In the invention, disadvantages generated in the condition that a direct current frequency limit controller (FLC) and power grid operation personnel modify a water turbine speed regulator parameter so as to restrain the ultra-low frequency oscillation are overcome.

The invention provides a device for 3D printing of a high-nitrogen steel product through nitrogen arc and nitrides and a method thereof. Surfacing forming of high-nitrogen steel with set layers is achieved at the ordinary pressure through a nitrogen arc wire feeding additive manufacturing method, and nitride alloy powder is added into a molten pool through nitrogen powder feeding. Spiral gas powder grooves are bored in the inner wall of a coaxial spiral gas powder cover. The nitride alloy powder forms rotary gas powder flow at a welding gun muzzle, the loss caused by scattering when the nitride alloy powder flows out of the gun muzzle is reduced, and the effect that the nitride alloy powder and molten drops at the ends of welding wires are fully and metallurgically smelted and then enter the molten pool is ensured. By controlling parameter matching of 3D printing, high-nitrogen steel printing layers with different nitrogen contents can be obtained. The mode of nitride alloy powder and welding wire synchronous coaxial power adding and wire feeding is adopted, and 3D printing of the high-nitrogen steel product at the ordinary pressure is achieved through a common steel welding wire-nitride alloy powder-nitrogen arc composite technology.

With a trend toward a higher intensity projection type liquid crystal display device to further increase brightness of a projection screen, rated input power of a light source lamp increases, which makes essential a fan apparatus for cooling the light source lamp, etc. Such a fan apparatus would require a light-shielding member which causes the number of parts to increase. The present invention provides a fan apparatus provided with a rotor section that can be rotated/driven around a predetermined rotation axis and a propeller section including propeller blades and attached to the rotor section arranged in such a way as to substantially shield light parallel to the rotation axis.

The invention discloses a welding method for improving an aluminum and steel weldment welding effect. The method comprises the following steps of surface treatment, lamp joint treatment, modified power adding treatment and laser welding treatment. Accordingly, special improvement treatment is conducted on an existing welding treatment process, the welding quality is effectively improved, the overall mechanical strength characteristic of aluminum and steel weldments is enhanced, the service life is prolonged, and very good popularization value is achieved.

The invention relates to a high-efficiency cadmium telluride thin film solar cell, comprising an existing cadmium telluride thin film solar cell substrate glass (1) and a cadmium telluride thin film power generation layer (2). The invention is characterized in that: a layer of antireflection and antireflection film (3) is prepared on the back surface of the cadmium telluride thin film solar cell substrate glass (1); The material of the antireflection and antireflection film (3) is silicon oxide, magnesium fluoride and titanium oxide, and the film refractive index of the antireflection and antireflection film (3) is 1.1 to 1.5 and the thickness is 45 to 200nm; The anti-reflection and anti-reflection film (3) can be prepared by sol-gel method. Gel, vapor deposition, magnetron sputtering, chemical vapor deposition, acid etching. The invention has the advantages that the power generation efficiency of the cadmium telluride thin film battery module prepared by the technology of the invention can be increased by more than 3%; The process is simple and the cost is low. The transmittance and power added value are high.

According to a first aspect of the present disclosed subject matter, a dynamic calibration method in a system comprising a relay, having a coil, adapted to inductively transfer power for charging a device and a transmitter, having a coil and a controller configured to inductively transmit to the relay the power for charging the device, wherein the transmitter and the relay are separated by a medium, the method comprising: determining operating parameters selected from a group consisting of minimal and maximal operating frequency; direction of power increase relative to operating frequency; minimal and maximal duty cycle; minimal and maximal operating amplitude; and any combination thereof; wherein the operating parameters and a ping frequency are determined based on dynamic measurements of the transmitter operation and calculations executed by the controller during the calibration.

The invention relates to a method for impelling through flow by air compressor time by considering air source bleed air of an air system. By analyzing the characteristics and the requirement of the air source of the air system of an engine, the air source bleed air and the air compressor are designed to be associated, a bleed air model with a bleed air position, a bleed air area, a bleed air volume, a bleed air speed and a bleed air angle combined with boundary conditions of a flow passage of the air compressor is established, and the influence of the bleed air parameters on the flow field of the air compressor is transmitted to the upstream and the downstream by impelling the solving of the through flow procedure by time, thus involving influencing factors of the bleed air on flow field characteristics such as flow field air flow angle, end wall loss, power adding quantity, blade shape and the like in the flow field solving of the through flow of the air compressor, and finally obtaining the through flow design result of the air compressor considering the air source bleed air of the air system. The method completely involves the influencing factors of the bleed air on the flow field characteristics of the air compressor in the flow field solving of the through flow of the air compressor, and thoroughly and deeply considers the air source bleed air of the air system in the through flow design of the air compressor, thus being the exploration and innovation of the bleed air realized in the design of the air compressor.

The present invention introduces a hydraulic system speed increase and power adding apparatus which is provided with a connection oilchannel (1), wherein a oil pump (2) is pipe jointed on the oilchannel between a input terminal T1 and an output terminal B; a one way valve (11) and a oil pump (3) is pipe jointed between the oilchannel and the input terminal T2, wherein the oilchannel is between a output terminal B and the oil pump (2); a energy accumulator (10) and a over-flow valve (12) with an output terminal T is pipe jointed on the oilchannel between the one way valve (11) and a oil pump (3). When oilchannel of system distributor valve changes direction, the present apparatus can make the oil cylinder of the distributor valve changes direction quickly and make the pumping oil cylinder obtain pumping capability that can increase speed and add power, thereby can make the dynamic performance and reliability of the oil channel of the hydraulic system improved and strengthened effectively, also make the oil pump work under more smooth work status, improve pumping dynamic performance such as the concrete pump significantly.

The invention relates to a powder adding component of a carbon powder barrel. The carbon powder barrel comprises a barrel body, the power adding component is matched with the barrel body and can be axially and movably arranged in the barrel body in the axial direction of the barrel body; the power adding component comprises a hollow piston rod provided with a developer inlet and a developer outlet; and a sealing cover is arranged at the developer outlet, and the developer outlet can communicate with or is disconnected from the inner cavity of the cylinder body. According to the invention, thehollow piston rod is ingeniously utilized to form the powder adding channel, and the powder adding channel is opened or closed by matching with the sealing cover, so that the operation of an operatoris facilitated; and moreover, a powder feeding port is directly formed at the side wall of the barrel body, and the size of a filling channel is increased, so that the filling efficiency is improved,and the phenomenon that the developing powder is seriously leaked in the moving process of the piston can be avoided.

A method of illuminating a light valve using a light source having a nominal power dissipation level. In the method, power is supplied to the light source to generate light and illuminate the spatial light modulator through the light input. During an initial portion of an illumination period of each colorband period, the power supplied to the light source is increased to an overdrive level above a nominal power dissipation level. In addition, the power supplied to the light source is decreased following the initial portion of each colorband period in the illumination period to thereby increase the intensity of the light source during the initial portions of the illumination periods of each colorband period and maintain a substantially uniform light output throughout the colorband periods.