50results about How to "Consistent power" patented technology

Compensation system adapted for use with a battery-powered, PWM-driven portable electronic device to enable consistent power to the device load despite battery voltage drop resulting from battery depletion, comprising: a voltage divider circuit for proportionally adjusting the voltage to a measurable range; an analog-to-digital converter for receiving the output from the voltage divider and converting it into a digital voltage value; and a microprocessing unit for running software code steps for receiving digital voltage input and user-determined power setting input for determining a compensating duty cycle for application by the software to the PWM to drive the load consistently at the user-determined power setting despite decrease in battery voltage resulting from battery depletion.

This invention relates to a super large power ultrasonic generator with one common oscillation source, which comprises the following: power circuit, time circuit, signal generator circuit, front drive circuit, microprocessor power adjusting circuit, power amplifying and matching circuit and load circuit. The signal generator makes fractional frequency division of the time signals and generates control signals with frequency range of 16KHz-2MHz according to frequency points selected. The front drive circuit converts the control signals into drive signals with one to one hundred paths. The front drive signals are amplified with power and gets output pushing signals through matching circuit to fulfill the output power adjusting and controlling.

The invention belongs to the field of solar cells, and provides a lightweight double-glass module comprising chemically toughened glass, a packaging layer, cell strings, a packaging layer and physically toughened glass which are arranged from the top to the bottom in turn. According to the lightweight double-glass module, chemically toughened glass acts as front glass and cell sheets crack if chemically toughened glass is used for supporting due to excessive flexibility of chemically toughened glass, and physically toughened glass acts as back glass and float physically toughened glass acts as a main bearing surface under the condition of wind-snow load so that the cell strings in module can be greatly protected, and the overall strength of the module can be increased through the collocation; besides, the installing method is almost the same with that of common double-glass modules so that the installing method does not need to be changed; and thinner glass is adopted on the basis of a backboard module and the double-glass module, and weight is relatively low and is only about 12KG so that weight is reduced by 40% in comparison with that of conventional double-glass.

The invention relates to the technical field of optical elements, in particular to a diffractive optical element. In order to solve the problems of inconsistency between sub-beam power and expected power when a diffractive optical element that is high in manufacture error is used for beam splitting of light, the invention provides the diffractive optical element which comprises phase distribution A and phase distribution B. The phase distribution A conforms to 0/cX<pi> binary distribution, where c is in a numerical range of 0.5-1.5. The phase distribution B compensates with the phase distribution A, that is, the sub beam power outputted when a laser passes through the phase distribution B compensates with the sub beam power outputted when a laser passes through the phase distribution A. The invention achieves compensation of the power between sub beams by means of combining the phase distribution A with the phase distribution B, so that the sub beam power is consistent with the expected power.

The invention discloses a novel ultra-wideband power divider based on LTCC. The power divider comprises an ultra-wideband balun and a 180-degree ultra-wideband phase shifter, wherein the ultra-wideband balun part is formed by three ports of a strip line-defected ground structure, the phase shifter part is formed by a folded transmission line and a reference straight wire, an unbalanced output portof the ultra-wideband balun is connected with an input end of a phase shifting channel of the wideband 180-degree phase shifter, and another unbalanced output port of the balun is connected with an input end of the reference straight wire of the phase shifter, so that the power divider with ultra-wideband performance is formed. The ultra-wideband power divider has the advantages of small volume,simple circuit structure, ability of realizing large-scale production, wide bandwidth, flat passband, low echo loss and consistent power and phase of output signals of the output port. In addition, the ultra-wideband power divider is convenient to install in the using process, capable of independently serving as a component and applicable to a feed network of a power amplifier and an array antenna.

The invention relates to an energy balanced control method and device for an energy-storage power supply system and a balanced system. The method comprises the following steps: during charging balanced control, acquiring actually stored electric energy of each energy storage module, and finding the minimal electric energy; calculating an error value between each of the other electric energy and the minimal electric energy, and judging the amplitude of each of the error values and a first set balanced threshold value, wherein for each of the error values exceeding the first set balanced threshold value, corresponding energy storage branches are controlled to perform charging according to corresponding PWM (Pulse-Width Modulation) control pulses; and during discharging balanced control, finding the maximal electric energy, and calculating an error value between the maximal electric energy and each of the other actual electric energy, wherein for each of the error values exceeding a second set balanced threshold value, corresponding energy storage branches are controlled to perform discharging according to the corresponding PWM control pulses. In the previous two situations, duty ratios of the PWM control pulses are in reverse proportion to the error values. Corresponding charging and discharging energy distribution is performed according to the energy state of each energy storagemodule, so that energy balanced control is realized.

The invention discloses an adaptive power output regulating intelligent heating control card and a control method thereof, wherein the card and the control method thereof relate to the field of temperature control technology. The control card comprises the components of 16 silicon controlled rectifier output ends, a current transformer, a voltage transformer, a temperature sensor and a microprocessor, wherein the 16 silicon controlled rectifier output ends, the current transformer, the voltage transformer, the temperature sensor and the microprocessor are photoelectrically isolated. Accordingto the adaptive power output regulating intelligent heating control card and the control method thereof, through acquiring related variables of actual power, power supply voltage and ambient temperature change at each heating control point, through a related algorithm, on the condition of certain preset power, the power output of the temperature control point is automatically regulated so that actually output heating power is same with the preset power and accurate temperature controlling is realized. The adaptive power output regulating intelligent heating control card and the control methodthereof have advantages of low investment, simple structure, high reliability, high stability and high convenience in mounting and debugging.

The invention provides a power control method of a multi-type wind turbine hybrid wind power farm. The control method comprises the following steps that firstly, the running parameters of the whole wind power farm and the running parameters of various types of wind turbines are obtained; secondly, according to the running parameters of the whole wind power farm and the running parameters of various types of wind turbines, the adjusting parameter of each type of wind turbines is set; thirdly, according to the running parameters of the wind turbines, the adjusting priorities of all types of windturbines are arranged; fourthly, it is judged whether the difference between the real-time active power value of the wind power farm and a preset target active power value is smaller than a reasonable error range value or not; fifthly, according to the sequence of the adjusting priorities of the wind turbines and the set adjusting parameters of all types of wind turbines, the active power of eachtype of wind turbines is adjusted, and finally the first step is executed. By means of the control method, the hybrid multi-type wind turbines in the wind power farm can be cooperatively controlled,so that the output power of the whole wind power farm meets the grid-connected requirements of the wind power farm.

The invention relates to the technical field of OLED display panels. A multi-head laser machining equipment for an OLED display panel comprises a working platform and a support arranged at the upper end of the working platform. The equipment is characterized in that a main X-axis linear module is arranged on the support, and a multi-head laser mechanism is arranged at the position where the main X-axis linear module is located; and the upper end of the working platform is also provided with a movable carrier disc, the movable carrier disc is used for limiting and fixing an OLED master slice, and the movable carrier disc penetrates through the lower part of the multi-head laser mechanism through a Y-axis linear module.

The fuzzy control electrothermal film film-coating process includes the following steps: placing base material in heated film-coating kiln; according to the preset temp. and film-forming efficiency of electrothermal film spraying film on the base material; timely detecting base material temp. and transferring the detected result into chip microprocessor; the chip microprocessor can timely output signal for controlling film-forming efficiency of electrothermal film; completing film-spraying step and taking out the base material coated with electrothermal film. Said invention can ensure effect uniformity of hydrolysis oxidation reaction of electrothermal film liquor on the surface of base material.

The invention discloses a multifunctional electric heating cup which comprises a cup body provided with a handle; a cup main body for holding liquid and a heating assembly for heating liquid are arranged in the cup body; the heating assembly comprises at least two electric heating tubes and a control circuit for controlling the working state of the electric heating tubes; the control circuit is provided with a voltage change-over switch; the electric heating tubes include an electric heating tube I and an electric heating tube II which are connected in the control circuit in parallel; and in the low-voltage state, both the electric heating tube I and the electric heating tube II are enabled to be in the working state through the voltage change-over switch, and in the high-voltage state, either the electric heating tube I or the electric heating tube II is enabled to be in the working state through the voltage change-over switch. A double-voltage design is adopted in the invention, the electric heating cup is switched over between the functions of heating liquid and producing steam through a two-way power switch, and the working state of the electric heating tubes I and II is changed through the voltage change-over switch, so that the electric heating cup can work under different working voltages but keep consistent power; and the multifunctional electric heating cup has the advantages of convenience, quickness, safety, reliability and high practicability.

The invention provides a constant power interface-based hybrid dynamic simulation method. The method includes the following steps that: a power system is divided into a plurality of subsystems; a time sequence of equal time intervals is obtained; the initial power flow of the subsystems is obtained; and the injection current of a boundary bus and the voltage simulation curve of the boundary bus are determined. According to the method of the invention, a constant power interface can guarantee the consistency of the switching power of a research power grid and an external power grid and a measured value in a whole simulation period, and therefore, a foundation can be laid for the practical application of the hybrid dynamic simulation method.

The invention discloses a power compensation circuit of an LED lamp. The circuit comprises a rectification module, a constant-current driving module and an LED lamp string, wherein the rectification module is used for converting a high-voltage alternating current into a line voltage and then outputting the line voltage; the constant-current driving module is used for adjusting the current value ofa LED lamp string. The circuit further comprises a low-voltage DC power supply module, an acquisition module and a control module with a preset algorithm. The circuit has the advantages that the power of each LED lamp does not change along with the change of a stable voltage among different voltage stabilizing diodes of the same model, so the power among all the LED lamps is consistent; the powerof a single LED lamp does not change along with the change of the working temperature of the voltage stabilizing diodes, so the consistency is better.

The invention relates to the technical field of television signal source adjustment, and discloses a signal source channel sound sensitivity adjustment method and system based on power protection feedback, and the method comprises the steps: an audio source sound reference, i.e., the preset reference sound source data is established, thereby enabling the audio information of various audio formatsof a signal source of each channel to be consistent; and then the master control module compares the audio data of each signal source with the power over-protection data by using the over-protection mechanism of the power amplifier, namely the power over-protection data of the application, so as to obtain the real-time gain value of the signal source, so that the sound output power of each signalsource can be consistent. Therefore, the phenomenon that the sound of the television changes suddenly when the television converts the signal source is avoided, meanwhile, manual debugging can be replaced, and the whole process is more automatic.