198results about How to "Control output power" patented technology

The invention discloses a heat pump heating multi-objective optimization control method based on a model. According to the method, firstly, a dynamic change model for air source heat pump heating temperature is built, on the basis, an air source heat pump energy consumption model is built, a temperature control and energy saving comprehensive objective function is set, and a total multi-objective dynamic optimization model is obtained. The dynamic optimization model is dispersed to an algebraic equation with nonlinear programming through a multipoint shooting method, and then optimum air source heat pump output power is obtained through sequential quadratic programming (SQP) solving technology. According to relation between the air source heat pump output power and frequency, optimum air source heap pump compressor frequency in different moments is confirmed, and finally the optimum air source heap pump compressor frequency is controlled in optimum value through predictive control technology. According to the heat pump heating multi-objective optimization control method based on the model, the requirements for operation energy saving and comfort are considered, the air source heat pump operation frequency can be regulated in real time, and a system is enabled to be in optimizing operation.

An output power limiter system (PLS) for audio amplifiers may be designed as a feedback control system for protection of the load and / or quality of the audio experience. The PLS may use comparator to sense the output current, compare it to a specified threshold, and assert a signal when the output current reaches and exceeds the specified threshold. The output signal from the comparator may enable a counter that is clocked with a high frequency clock to begin counting to measure the pulse-width of the comparator output. The output of the counter may be averaged through a fast attack and slow release infinite impulse response (IIR) filter having programmable settings to generate a rate of attenuation or rate of release that adjusts a gain correction in terms of decibels (dB). The output of the IIR filter may then be used for attenuating the output current.

A microwave heating apparatus for heating a load by means of microwaves is provided. The microwave heating apparatus comprises a cavity arranged to receive a piece of food to be heated, a first microwave supply system configured to supply microwaves at the cavity bottom for energizing a browning function in the cavity, a second microwave supply system configured to supply microwaves into the cavity for exciting cavity modes and a control unit configured to control the first and second microwave supply systems based on a food category and / or a cooking program. The first supply system comprises at least one microwave source and at least one antenna arranged in a lower part of the cavity and the second microwave supply system comprises at least one microwave source and at least one feeding port arranged in an upper part of the cavity. The present invention is advantageous in that a microwave heating apparatus with an improved crisp function is provided.

The invention relates to a double-ring feedback gain flattening erbium-doped optical fiber amplifier and belongs to the technical field of optical fiber amplifiers. The double-ring feedback gain flattening erbium-doped optical fiber amplifier structurally comprises a basic amplification optical path, a first three-port circulator (13), an optical fiber loop mirror (14), a second three-port circulator (15), a grating (16), a fourth optoisolator (17), an optical attenuator (18), a photoelectric converter (19), a PID control circuit (20) and a voltage-controlled current source (21), wherein the basic amplification optical path is composed of a signal source (1), a first optoisolator (2), a first coupler (3), a first wavelength division multiplexer (4), a first erbium-doped optical fiber (5), a second wavelength division multiplexer (6), a second optoisolator (7), a gain flattening filter (8), a second coupler (9), a second erbium-doped optical fiber (10), a third optoisolator (11), a first optical splitter (12) and a pumping module (22). The double-ring feedback gain flattening erbium-doped optical fiber amplifier has the advantages of being flat in gain, high in responding speed, controllable in output power and the like.

The invention relates to a microwave output power control device and method. The microwave output power control device comprises a microwave generator, an attenuation circuit, an amplification circuit and a controller. The microwave generator is connected with the input end of the attenuation circuit and the input end of the amplification circuit. The amplification circuit outputs amplified microwaves. The controller is connected with the microwave generator, the attenuation circuit and the amplification circuit. The microwave generator generates microwaves, the microwaves are attenuated through the attenuation circuit, then amplified through the amplification circuit and then output, and the controller is used for obtaining the microwave generating power of the microwave generator, the gain of the amplification circuit and microwave heating power and controlling microwave output power by adjusting the attenuation value of the attenuation circuit. The microwave output power control device and method do not need to depend on a magnetron working in the high-voltage environment, and the safety of control over the microwave output power can be improved; the stability of the microwave output power can be improved for a long time, and then the heating effect of a corresponding microwave heating device can be improved.

The invention discloses a landscape energy-saving LED street lamp, comprising a battery, a motor and a column, wherein a hydraulic pump is installed inside the column, the hydraulic pump is connected with a telescopic rod through a hydraulic rod, and a control box and a telescopic rod are installed inside the telescopic rod. A motor, a battery, a PLC controller and a signal transceiver are installed inside the control box, and the PLC controller and the signal transceiver are electrically connected to the battery through wires, the PLC controller is electrically connected to the motor through wires, and the motor The rotating shaft is rotatably connected with the rotating shaft through a gear reducer, the top of the rotating shaft is installed with a solar panel, and the top of the solar panel is installed with a photosensitive marker, which is electrically connected to the PLC controller through a wire. The invention can maximize the absorption of solar energy, achieve the purpose of developing new energy and saving existing resources, and is installed with LED lighting lamp beads and LED display boards for lighting and advertising exhibition purposes respectively, and has good market promotion value.

A semiconductor laser with an integrated attenuator on the same chip as the laser. In some embodiments the attenuator is formed of the same material as the laser, but without a grating in the attenuator. In some embodiments the laser and attenuator are fabricated concurrently, with the attenuator positioned at the front of the laser and differing from the laser only in not having a grating and having a much smaller length. Level of attenuation by the attenuator is adjustable based on drawing photogenerated current from the attenuator.

The invention provides a protective method and a protective device of power storage batteries, wherein the method comprising following steps: (1) acquiring a permitted maximum value of input power of the power storage battery and acquiring a maximum value of the voltage of a battery cell in the present power storage battery; (2) determining whether a difference value between the maximum value of the voltage and a preset overvoltage threshold value is greater than zero or not, if the difference value is greater than zero, processing the difference value according to the proportional integral and differential PID control algorithm to obtain a processing result; and (3) obtaining a first power according to the maximum value of the input power and the processing result, and controlling torque of a motor according to the first power for controlling the input power of the power storage battery. According to the embodiment, by means of the protective method, when the power storage battery is subjected to overvoltage, the voltage of the battery can be quickly decreased to below the preset overvoltage threshold value through the proportional integral and differential PID control algorithm. In addition, the circuit change is smooth and steady, so that the protective method and the protective device reduce damage of the overvoltage on the battery and further prolong the service life of the battery.

A semiconductor laser instrument for treating amblyopia is composed of control unit, voltage regulator, current regulator, timer, and semiconductor laser device.

The invention provides an optical fiber connecting method comprising the following steps of: respectively removing small sections of coating layer on the respective ends to be connected of two sections of optical fibers to be connected to expose optical fiber cladding layers, and cutting end surfaces at the same inclined angle; placing the cut inclined end surfaces of the optical fibers to be connected in a way of clinging to complementing positions and welding the cut inclined end surfaces of the optical fibers to be connected together to finish angle welding of the optical fibers to be connected. The optical fiber connected by using the connecting method provided by the invention has the advantages that the optical feedback surface at a melting point is an inclined surface, so that reflected light returning along the original path is reduced, the optical feedback surface at the melting point hardly forms a laser resonant cavity together with other optical feedback surfaces in a system, oscillation of parasitic laser initiated by optical feedback of a low melting point can be reduced, the output power of ASE (airborne support equipment) is increased, the introduction of an optical isolator is even avoided, the loss and the cost are reduced, and the optical fiber connecting method is effectively applied to systems such as optical fiber laser and wideband superfluorescent optical fiber light source.

The present invention discloses an energy supply system of a stratosphere solar energy airship and a control method thereof. The system comprises an energy monitoring unit and a solar generation unitand an energy storage unit which are connected with the energy monitoring unit. The solar generation unit is connected with a power supply bus in an airship through the energy storage unit, the energymonitoring unit comprises multiple generation paths, each generation path comprises one solar cell array, one MPPT module and one control switch module which are connected in order, and the energy monitoring unit controls output of each MPPT module and charge and discharge of the energy storage unit according to the power required by a load, and controls on-off of each control switch module according to the residual energy of the energy storage unit. The control method is configured to control the system mentioned above. The energy supply system of the stratosphere solar energy airship and the control method thereof are simple in structure, low in cost and high in energy supply efficiency and utilization rate, can meet the long-term continuous power supply demand of the stratosphere airship, and are stable and reliable, etc.

The invention discloses a temperature compensation device for a power amplifier and a method for controlling the power stability and relates to power amplifiers of a base station and a repeater in the technical field of mobile communications. The temperature compensation device for the power amplifier comprises a signal input port (A), a pressure control attenuator (60), a power amplifier (10), a coupler (70) and a signal output port (B) which are connected with one another sequentially; the coupler (70), a power detector (20), a voltage comparator (30) and the pressure control attenuator (60) are connected with one another sequentially; and the power amplifier (10), a temperature sensor (40), a singlechip (50) and the voltage comparator (30) are connected with one another sequentially. By the invention, the power stability of the power amplifier at different temperatures is improved, power at different power levels can be output stably by the power amplifier, the power output by the power amplifier can be controlled, and the operability is high.

The invention relates to a grading limiting circuit for an aerospace alternative-current / direct-current (AC / DC) converter, which is characterized by comprising a power part and a control part, wherein the power part comprises an input filter unit, a power factor correction (PFC) conversion circuit unit, a high-frequency isolation DC / DC conversion circuit unit and an auxiliary power supply unit; and the control part comprises a PFC conversion controller unit, an input power supply voltage detection circuit unit, a DC / DC limiting point setting circuit unit and a DC / DC control unit. The input filter unit is arranged at a first stage, so the interference of the power supply can be reduced after the inputted AC power supply is filtered. The AC power supply after being filtered is converted by the PFC conversion circuit unit into 410V DC power supply to be outputted, waveform of the inputted current is maintained to be consistent with the waveform of the voltage of the power supply, so the input power factor is approximate to 1. The 410V DC voltage is converted to a power supply voltage (28V or 57V) required by a load through the high-frequency isolation DC / DC conversion circuit unit.

The invention discloses a sniper system of an unmanned aerial vehicle. The sniper system comprises a control processing unit, a guide unit, a photoelectric tracking unit and a laser hitting unit, wherein the guide unit is mainly used for providing motion and position relevant information of a to-be-hit target; the control processing unit provides tracking used for the target to the photoelectric tracking unit; the photoelectric tracking unit is driven to continuously regulate an azimuth angle and a pitching angle according to position and position change position obtained by the guide unit, so that the to-be-hit target is locked; and the laser hitting unit is used for triggering a laser unit to output, so that the laser unit outputs laser for shooting the to-be-hit target once a hitting instruction is received, and therefore, the target is destroyed. According to the sniper system disclosed by the invention, a laser way is adopted to hit, so that an innocent third target can be prevented from being damaged; meanwhile, a laser way is adopted to hit hardly, so that horrible results can be prevented from being expanded. Meanwhile, the system can be directly in butt joint with an airport while interference is not generated on communication of the airport.

The invention provides a cooperative control device of a distributed photovoltaic grid-connected generation system. The device is composed of a single centralized grid-connected inverter and the common direct current bus of a number of MPPT combiner boxes. A voltage coding module is added in a centralized grid-connected inverter. The voltage coding module is located on the common direct current bus on the single centralized grid-connected inverter side. One end is connected with the direct current bus, and the other end is connected with a number of MPPT combiner boxes. Each MPPT combiner box is added with a voltage decoding module, and the voltage decoding module is located on the direct current bus on the combiner box side. A number of voltage decoding modules are correspondingly connected with a voltage coding module. The voltage coding module outputs the common direct current bus voltage reference value for adjusting the inverter to the inverter CPU according to the current instruction of the centralized grid-connected inverter. The voltage change of the common direct current bus is controlled, and the adjustment instruction is transmitted to the MPPT combiner boxes in the form of voltage. The voltage decoding modules identify the issued dispatch instruction according to the voltage of the direct current bus of the combiner boxes and output a control instruction, and the combiner boxes execute the control instruction.

A discontinuous conduction current mode maximum power limitation photovoltaic converter connects to a ground and a solar cell having a temperature compensation signal and an output power and being solarized and comprises a direct current / direct current voltage converter and a maximum power control circuit. The direct current / direct current voltage converter connects to the solar cell, comprises an input terminal and an output terminal, offers a stable voltage and has an output voltage signal and an inner current. The maximum power control circuit connects to the direct current / direct current voltage converter and the solar cell, controls the direct current / direct current voltage converter to limit the output power of the solar cell to maximum and comprises a temperature compensation feedback circuit, an output voltage feedback circuit, a current detection circuit and a main control circuit.

A discharge lamp ballast is designed to limit or interrupt its AC output power to the discharge lamp upon occurrence of an abnormal discharge outside of an arc tube. A detector is included to examine a lamp voltage once in each of the positive and negative half-cycles or in each one complete cycle of the AC output power, and identifies the abnormal discharge when there is a particular change in the monitored lamp voltage. The particular change may be defined by a single logic or by combination of several logics each designed to represent specific characteristic for the abnormal discharges of several types.

The invention provides a control method and system for electric vehicle remote charging. The control method comprises the steps that a charging request sent by a vehicle-mounted terminal is received,and the charging request comprises multiple charging modes of a to-be-charged vehicle; according to the remaining power of a charging station, optional charging modes are determined from the multiplecharging modes of the to-be-charged vehicle, and the remaining power is a difference value between a rated output power and an actual output power of the charging station; a charging instruction is sent to the vehicle-mounted terminal to make the to-be-charged vehicle select one charging mode for charging from the optional charging modes, and the charging instruction comprises the optional charging modes among the multiple charging modes. According to the control method and system for electric vehicle remote charging, the charging modes of the to-be-charged vehicle are controlled to realize the control of the actual output power of the charging station, thereby solving the problem that the charging station is overloaded for a long time, improving the reliability and utilization of the charging station, and reducing the failure rate of the charging station.

The fuel cell system includes a fuel cell; a power conditioner that converts a cell power supplied from the fuel cell to a power corresponding to a load; a capacitor to which an excessive output power of the fuel cell is charged at the time of a low load operation and from which a power corresponding to the insufficient output power of the fuel cell is discharged at the time of a high load operation; a voltage detection means for detecting a voltage of the capacitor; and a control means that determines the low load operation or the high load operation, calculates an output power from the fuel cell to maintain the excessive power generated at the time of the low load operation within a space capacity of the capacitor, and controls the output power of the fuel cell not to exceed the calculated value.

The invention discloses an island microgrid operation method based on fuzzy PI control. The method comprises the steps of establishing an island microgrid operation model, wherein an island grid comprises master distributed generation and slave distributed generation; improving a droop controller in a v / f droop control system based on fuzzy PI; controlling operation of the master distributed generation through the droop controller, thereby obtaining voltage amplitude and frequency output by the master distributed generation; and converting the voltage amplitude and frequency into modulation signals and controlling the output power of an inverter of the master distributed generation according to the modulation signals. The fuzzy PI control is added to the droop controller in the v / f droop control system; on the basis of fuzzy reasoning, the droop controller can effectively control the voltage amplitude and frequency output by the master distributed generation; the output voltage amplitude and frequency are converted into the modulation signals; the output power of the master distributed generation can be effectively controlled according to the modulation signals; and the fluctuation of the voltage amplitude and frequency in the operation of the island microgrid can be further inhibited.

The invention relates to an air purification and sterilization system of enclosed spaces. The air purification and sterilization system of the enclosed spaces comprises an air flow channel, ultraviolet sterilization modules, ultraviolet irradiance sensors and a controller, wherein the air flow channel communicates with the enclosed spaces, and is provided with air inlets, air outlets, and air flues formed between the air inlets and the air outlets; the ultraviolet sterilization modules are provided with ultraviolet light sources arranged in the air flues; the ultraviolet irradiance sensors arearranged in irradiation ranges of the ultraviolet sterilization modules; the controller is connected with the ultraviolet irradiance sensors and the ultraviolet sterilization modules; and the controller has a preset power value, and by comparing the ultraviolet irradiance monitored in real time and the preset power value, power output of the ultraviolet light sources is adjusted. Circular continuous sterilization and air purification are formed between the air purification and sterilization system of the enclosed spaces and the enclosed spaces, man-machine symbiosis can be achieved, disinfection is conducted in real time, and sterilization power is adjusted intelligently and controllably according to the working conditions.

The invention provides an electric sparkle earthquake focus for elastic wave exploration. The discharging switch of the electric sparkle earthquake focus is turned on by using a group of microcomputer timing switch turning-on relays, so that the charging time of the electric sparkle generator can be controlled within a range of 0.5-10 seconds. If the charging time is long, the electric sparkle generator is discharged after reaching rated power, and the electric sparkle earthquake focus is used for deep exploration; and a point measurement distance is controlled within a range of 2-10 m by combining the charging time and a ship driving speed; and if the charging time is short, the electric sparkle earthquake focus can be used for shallow part exploration of water bottom, and the point measurement distance is controlled within a range of 0.5-2 m by combining the charging time and the ship driving speed. A control switch is connected with a real-time parameter displaying device; when the control switch is turned on, measurement turn-on signals are given to a host for receiving reflection wave signals; timing and positioning time signals are given to a satellite positioning device; signals are transmitted to a display device; and impulse frequency, impulse time, electric sparkle generator output power which is calculated through the impulse time, map and measurement point positions can be given and displayed.

The invention discloses a hybrid power vehicle and a driving control method thereof. The hybrid power vehicle comprises an engine, a first motor linked with a first axle and a second motor linked with a second axle. The maximum output power of the first motor and the maximum output power of the second motor under an electric motor mode are the first motor maximum power and the second motor maximum power correspondingly. The method comprises the following steps that according to the relation between the required power of the hybrid power vehicle and at least one of the upper limit power, the lower limit power, the first motor maximum power and the second motor maximum power which correspond to the optimum efficiency interval of the engine, the output power of the engine is controlled, the first motor and the second motor are controlled to work in the electric motor mode or an electric generator mode, and the output power of the first motor and / or the second motor working in the electric motor mode is controlled. According to the hybrid power vehicle and the driving control method thereof, the engine, the first motor and the second motor can be made to harmonically work to sufficiently play the roles of the engine, the first motor and the second motor.

The invention discloses a single-time slot digital control attenuating method and a system thereof, wherein the method comprises the following steps: the power value of each time slot is detected; according to the detected power value and system requirements, the attenuation value of the time slot is set; the attenuation value is converted into control signal and is transmitted to a control circuit, thereby realizing attenuation of the time slot. The system comprises a sampling module, an FPGA module, an MCU and an attenuation control circuit, wherein the sampling module is used to acquire sampling power value through ADC detection; the FPGA module is used to compensate time delay control quantity and to find out uplink time slot, downlink time slot, the address of a switching point and the address of the training sequence code of each time slot according to a time characteristic window; moreover, according to the power value and the time characteristics of TD-SCDMA signal, the FPGA module can obtain the power value of each time slot. By means of the characteristics of a TD-SCDMA system, the invention realizes digital control attenuation of each time slot of each subframe of a wireless frame, thereby effectively controlling the output power of each time slot.

The invention discloses a method for dynamically distributing power of a computer power supply based on a strategy, which belongs to the computer monitoring management field, formulates a corresponding working strategy according to the customer business load condition and controls the output power of the power supply according to the set strategy. A system comprises a customer business load monitoring unit, an embedded power control unit arranged at the power supply, and a strategy analyzing and implementing unit, wherein the customer business load monitoring unit mainly charges the monitoring and the statistic of customer business loads; the embedded power control unit arranged on the power supply is the carrier of the method and charges the control of the power supply based on the strategy specification; and the strategy analyzing and implementing unit is the center of the method and takes charge of the strategy analysis, the strategy formulation and the strategy implementation. The method for dynamically distributing power of the computer power supply based on a strategy achieves the purpose of saving energy through forcedly controlling the output power of the power supply and has the characteristics of reasonable design, convenient use, energy and resources saving, and the like.

The present disclosure relates to a single switching power supply that may either provide envelope power to a first RF power amplifier during a first operating mode, or simultaneously provide envelope power to the first RF power amplifier and to a second RF power amplifier during a second operating mode. In one embodiment, the single switching power supply and the first and second RF power amplifiers may be used in a multiple-input multiple-output (MIMO) RF communications system. As such, during the first operating mode, the first RF power amplifier may transmit a first RF output signal to a first antenna, and during the second operating mode, the first RF power amplifier may transmit the first RF output signal to the first antenna and the second RF power amplifier may transmit a second RF output signal to a second antenna, which may provide diversity.

The invention relates to a method of de-icing wind turbines of a wind park. At least a first wind turbine (WT1) and a second wind turbine (WT3) are assigned to the wind park (WP). The first wind turbine (WT1) produces a first electrical output power (Pout1), which exceeds a first power threshold value (PTV1). The second wind turbine (WT3) produces a second electrical output power (Pout3), which falls below a second power threshold value (PTV2). The first output power (Pout1) and the second output power (Pout3) are reported to a power controller (PC)of the wind park (WP). The power controller (PC) detects that the first electrical output (Pout1) power exceeds the first power threshold value (PTV1) and the power controller (PC) detects that the second electrical output power (Pout3) falls below the second power threshold value (PTV2). The power controller (PC) initiates a de-icing procedure being executed at the second wind turbine (WT3) until the second electrical output power (Pout3) exceeds the first threshold value (PTV1).

The invention provides a method of manufacturing a polarizer. The method comprises the steps A-E of (A) coating ultraviolet ray curing type adhesive agents on an optical film (2) made of thermoplastic resin; (B) making a polarizing film (1) made of polyving akohol overlapped on the ultraviolet ray curing type adhesive agent coating face of the optical film (2), pressurizing the optical film (2) relative to the polarizing film (1) so as to a laminated body of the polarizing film (1) and the optical film (2) attached through the ultraviolet ray curing type adhesive agents; (C) curing the adhesive agents by irradiating ultraviolet rays from an ultraviolet ray irradiating device (16); (D) obtaining the beam split irradiance integral value of ultraviolet rays comprising polymerization initiators and having absorption peak wavelengths within a specified absorption wavelength range by using irradiated ultraviolet ray beam split irradiance calculated by a beam split irradiance meter (17) of a polychromator; and (E) controlling the ultraviolet ray irradiating device (16) based on the acquired beam split irradiance integral value X and a set beam split irradiance integral value Y.

The invention provides a fuel cell vehicle energy control method, a computer storage medium and a vehicle. The method comprises the steps: obtaining the required power of the whole vehicle, and obtaining an SOC value of a power battery; determining a fuel cell power threshold range in which the required power of the whole vehicle is located; and controlling the output power of the fuel cell and the power cell according to the fuel cell power threshold range and the SOC value of the required power of the whole vehicle. According to the battery vehicle energy control method provided by the embodiment of the invention, when a fuel cell power threshold range in which vehicle required power is located is determined, the output power of the fuel cell and the power cell is controlled according to the threshold range of the required power of the whole vehicle and the SOC value of the power cell, so that the output power of the fuel cell under different working conditions is regulated and controlled in real time, and the energy loss caused by constant value output is reduced.

The invention belongs to the field of storage batteries and relates to a frame type hydraulic clamping grid die-casting machine which comprises a frame. A lead pan is mounted at the inner left end of the frame and is communicated with a lead pump, a guide rail is arranged on the right side of a die-casting machine body which is communicated with the lead pump, a die is mounted on the guide rail, the guide rail, the lead pump and the die-casting machine body are fixed on the frame, a proportional valve is mounted at the bottom of the frame, a rapid-traverse cylinder is connected with a hydraulic station through the proportional valve and is connected with the die, a clamping cylinder is mounted on an upper pressing die which is mounted on the die, the hydraulic station is mounted on the right side of the proportional valve after the clamping cylinder and the rapid-traverse cylinder are connected with the hydraulic station, and the hydraulic station, the proportional valve and the die-casting machine body are connected with an intelligent control system which is mounted on the right side of the frame. The frame type hydraulic clamping grid die-casting machine is accurate in die traverse, firm, durable, safe to operate and convenient to mount and transport.