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692 results about "Pulse control" patented technology

Software-Defined Hybrid Powertrain and Vehicle

A dual-motor mixed-hybrid powertrain system, by performing pulse modulation control, i.e., series-hybrid intelligent start-stop control or parallel-hybrid intelligent power switching control, on the instantaneous power time-varying functions of an engine and a battery pack, can convert the surface working condition of an analog electric control engine into a simpler line working condition of a digital pulse control (DPC) engine, either a pre-determined high-state line working condition in the high-efficiency combustion area or a pre-determined non-combustion low-state line working condition with zero fuel consumption and zero pollutant emissions multiplexed in time. The traditional fixed one-to-one bidirectional mapping between an engine working condition and a vehicle working condition is converted into a dynamically adjustable many-to-many bidirectional mapping to achieve the full coverage of any overall vehicle working condition, achieving decoupling between a DPC engine working condition and the overall vehicle working condition and decoupling between software and hardware of a hybrid powertrain.
Owner:GESANG WANGJIE +2

Lithium battery electrochemical impedance spectroscopy online measurement and estimation method and system based on charging pile

The invention relates to a lithium battery electrochemical impedance spectroscopy online measurement and estimation method and system based on a charging pile, and belongs to a battery detection technology. The system comprises a measurement module, an estimation module and a result output module. The measurement module comprises a signal generation sub-module, a waveform amplification sub-module and a response processing sub-module; a pulse control signal is inserted into the signal generation sub-module during charging, and is amplified into a measurement excitation signal by the waveform amplification sub-module to be applied to a battery; the response processing sub-module samples the response signal and calculates an impedance spectrum. The estimation module comprises a neural network sub-module and an impedance spectrum estimation sub-module; the neural network sub-module is used for training a physical information neural network by using impedance response to output Randles circuit model parameters to the estimation sub-module, and the change of the electrochemical impedance spectrum is predicted. And the result output module displays and stores the measured and estimated values of the impedance spectrum. According to the invention, the impedance values of the to-be-measured battery pack under multiple frequencies can be measured and estimated on line, and the estimation of the impedance spectrum is physically interpretable.
Owner:SUN YAT SEN UNIVERSITY SHENZHEN +1

Semiconductor laser power supply control circuit based on linear constant current and method thereof

The invention relates to the technical field of semiconductor laser power supplies, in particular to a semiconductor laser power supply control circuit based on linear constant current and a method thereof. According to the technical scheme, the circuit comprises a voltage follower module, a linear constant-current driving module, a power switch module, a pulse control module, a sampling feedback module and a follow current protection unit. The in-phase input end of an operational amplifier OPA320 of the voltage follower module is connected with external reference voltage # imgabs0 #, the inverted input end of the operational amplifier OPA320 is grounded through a first resistor R1 and connected with the output end through a second resistor R2, and a filter capacitor C1 is connected to the two ends of the second resistor R2 in parallel. Through a linear constant current control and pulse cooperation mechanism, the current stability and the dynamic response speed of the semiconductor laser under the wide-range and high-frequency working condition are remarkably improved, and it is guaranteed that the laser output power is accurate and reliable.
Owner:INST OF ENERGY HEFEI COMPREHENSIVE NAT SCI CENT (ANHUI ENERGY LAB)

In-cabin light supplementing control method and system and vehicle

The invention relates to an in-cabin light supplementing control method and system and a vehicle. The method comprises the steps that the working state of a second camera is obtained; based on the working state of the second camera, outputting the same pulse control signal to a preset light supplement lamp and to the first camera and / or the second camera; based on the same pulse control signal, the light supplementing time of a preset light supplementing lamp is controlled, and the exposure time of the first camera and / or the exposure time of the second camera are / is controlled; wherein the light supplementing time of the preset light supplementing lamp is greater than the exposure time of the first camera and the exposure time of the second camera, so that light supplementing is carried out in the corresponding exposure time. Thus, the light supplementing time of the preset light supplementing lamp at the corresponding position, the exposure time of the first camera and / or the exposure time of the second camera are controlled, light supplementing is carried out in the corresponding exposure time, and the image quality and the algorithm precision during exposure are further improved.
Owner:BEIJING CO WHEELS TECH CO LTD

Acupuncture point positioning and electric pulse regulation and control device and method based on electrical impedance feedback

The invention provides an acupoint positioning and electric pulse regulation and control device and method based on electrical impedance feedback, and the device comprises a bioelectrical impedance detection module which is provided with a flexible wearing hardware part, and the flexible wearing hardware part is provided with an electrode for collecting a skin electrical impedance signal, the bioelectrical impedance detection module determines a target acupuncture point area for placing an electrode according to the electrical impedance signal; the initial pulse output module is used for outputting a preset initial electric pulse signal to an electrode of the flexible wearing hardware part; the dynamic cooperative control module is used for adjusting an electric pulse parameter according to a real-time skin electrical impedance signal acquired by the electrode after the initial electric pulse signal is applied to the target acupuncture point area through the electrode; the electric pulse output module outputs electric pulse signals to an electrode according to the adjusted electric pulse parameters, acupuncture points can be accurately positioned, the electric pulse output parameters can be accurately adjusted, stimulation output is dynamically optimized through a feedback mechanism under the condition that the skin state of a patient changes or the characteristics of the acupuncture points are different, and the treatment effect and the comfort of the patient are improved.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

High-reliability high-density three-dimensional integrated multi-channel millimeter wave receiving and transmitting integrated radio frequency micro module

The invention provides a high-reliability high-density three-dimensional integrated multichannel millimeter wave transceiving integrated radio frequency micro module, which adopts three-dimensional ceramic packaging as a packaging body and comprises an amplitude-phase unit and a transceiving unit, and the two units and a cover plate realize electrical vertical interconnection and airtight packaging through three-dimensional stacking. The micro module receives an input signal, the input signal enters a receiving channel after being selected by a switch, an amplitude-limiting low-noise chipset in the micro module carries out amplitude-limiting amplification on the received signal, then the received signal is output to an amplitude-phase multifunctional chip, and the received signal is synthesized and output after amplitude-phase adjustment and amplification. A transmitting input signal is input to the amplitude-phase multifunctional chip after being subjected to power division, is subjected to power amplification after being subjected to amplitude-phase adjustment and amplification, is selected by the transmitting-receiving switch, and is radiated and output through the antenna. A negative electricity protection circuit and a pulse modulation circuit are integrated in the micro module, and pulse control of transmitting and receiving work of the micro module is achieved. The micro module adopts a stepped heat dissipation technology of the chip, the substrate, the functional unit and the micro module, and has very strong practicability.
Owner:NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD

Display control method, display module and electronic equipment

The embodiment of the invention provides a display control method, a display module and electronic equipment, which are used for improving the problem that a display screen refreshed by regions is easy to cause uneven brightness and the like. The method comprises the following steps: outputting a first pulse control signal of a first frequency, wherein the first pulse control signal is used for controlling a first pixel circuit to write first data according to the first frequency; outputting a second pulse control signal of a second frequency, wherein the second pulse control signal is used for controlling a second pixel circuit to write second data according to the second frequency; the first pixel circuit and the second pixel circuit are pixel circuits located in different rows, the first frequency is larger than the second frequency, and the pulse width of the first pulse control signal is smaller than that of the second pulse control signal.
Owner:HUAWEI TECH CO LTD

High-voltage pulse generating device and testing system

The utility model provides a high-voltage pulse generating device and a test system. The high-voltage pulse generating device comprises a main control unit, a driving circuit, a pulse control circuit with a wide bandgap semiconductor power device, and an output circuit, the first end of the main control unit is coupled with the first end of the driving circuit, the second end of the driving circuit is coupled with the first end of the pulse control circuit, and the second end of the pulse control circuit is coupled with the output circuit; the main control unit is configured to generate two paths of first PWM (Pulse Width Modulation) signals with dead time control; the two paths of first PWM signals are sent to the driving circuit; and the driving circuit is configured to process the first PWM signal and then drive the pulse control circuit, so that the output circuit generates a high-voltage pulse signal. According to the utility model, the structure is simple, the cost can be greatly reduced, the output pulse speed can be flexibly set, and the CMTI test requirements of different isolated gate drivers can be met.
Owner:XINLIAN ADVANCED INTEGRATED CIRCUIT MANUFACTURING (SHAOXING) CO LTD

Sectional pulse charging control method and system

The invention relates to the technical field of battery pack charging control, and particularly discloses a sectional pulse charging control method and system, and the method comprises the steps: dividing a charging process into a plurality of charging intervals; a buffer zone is arranged between every two adjacent intervals; constructing a pulse control objective function; optimizing the initial parameters in combination with a particle swarm algorithm; performing transition control on the pulse amplitude and the duty ratio in the buffer zone, and fusing the optimization signal and the buffer signal to generate a final charging control instruction; compared with the prior art that a fixed current pulse or a simple segmented threshold hopping strategy is mostly adopted, voltage sudden change and severe temperature rise are likely to occur, and particularly under a nonlinear charging working condition, flexible transition of control parameters and service life-friendly charging adjustment are difficult to achieve, the method has the advantages that due to a buffer transition mechanism, the service life of the battery is prolonged, and the service life of the battery is prolonged. And pulse parameters are dynamically adjusted in combination with multi-objective optimization, so that the stability of charging control is improved and the cycle life of the battery pack is prolonged.
Owner:XUZHOU DECHI ELECTRONIC TECH CO LTD

Pulse controller test equipment

The invention relates to the field of instrument testing, and discloses pulse controller testing equipment, which comprises a signal simulation unit, a parameter acquisition unit, a gas circuit control unit, a main control unit and a test board, the signal simulation unit generates simulated dust concentration and pressure difference signals; the parameter acquisition unit is used for acquiring blowing interval time, duration time and output voltage signals in real time; the air path control unit provides compressed air with adjustable pressure through an air storage tank, a pressure regulating valve and a pulse valve driving module, and a pressure sensor and a flow sensor feed back signals in real time so as to adjust air path parameters. The main control unit controls the test process and judges whether the pulse controller is abnormal based on the collected data; the test bench realizes equipment fixation and connection through a clamp and an electrical / pneumatic port. The device calculates a comprehensive abnormal index through standardized parameters, supports multi-stage early warning and fault determination, and is suitable for automatic testing of the pulse controller.
Owner:常州市凌川自动化科技有限公司

Wake flow redirection control method and system based on cabin type laser radar prediction

The invention provides a wake flow redirection control method and system based on cabin type laser radar prediction, and relates to the technical field of laser radar remote sensing detection, and the method comprises the steps: obtaining first wake flow propagation path data of a target unit at different spatial positions and first wake flow speed data of different time points through a cabin type laser radar; performing correlation analysis on the first wake flow propagation path data, the first wake flow speed data and a preset unit wake flow speed attenuation coefficient to obtain a correlation analysis result; obtaining a wake flow prediction result based on the first wake flow propagation path data and the correlation analysis result; obtaining wake flow redirection control demand data based on a preset wake flow control target and the calibrated first wake flow speed data; converting the pulse parameter into a pulse control signal based on wake flow redirection control demand data; based on the pulse control signal, accurate redirection control over the wake flow of the wind turbine generator is achieved, cross interference of the wake flow is reduced, and the overall power generation efficiency of a wind power plant is improved.
Owner:YANGXIN DEHUI WIND POWER CO LTD

Extra-high voltage hybrid direct current transmission control system and method

The invention provides an extra-high voltage hybrid DC power transmission control system and method, and the system comprises a controller which is used for transmitting fault control trigger pulse control information to a hybrid converter when a transmitting end AC fault occurs; the hybrid converter is used for reducing the injected active power and the output direct-current power when the extra-high voltage direct-current power transmission line is in a normal operation condition; based on the state of the ultra-high-voltage direct-current power transmission line in the normal operation working condition, the full-bridge sub-module in the ultra-high-voltage direct-current power transmission line is controlled to output negative voltage, and short-circuit fault current is suppressed. And the turn-off current source type current converter is used for triggering an internal lightning arrester to generate a commutation voltage when a receiving end AC fault occurs, and carrying out commutation by combining the power grid voltage with the commutation voltage. According to the system, a hybrid converter is adopted at a sending end, active power and reactive power of the sending end are flexibly regulated and controlled, and negative voltage is output to suppress short-circuit fault current when a direct-current short-circuit fault occurs; and when the receiving end has an alternating current fault, reliable commutation can still be ensured.
Owner:CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD

Pulse intermittent water vapor bottom blowing coupling mechanical stirring enhanced mixing device

The invention relates to the technical field of chemical reaction equipment, in particular to a pulse intermittent water vapor bottom blowing coupling mechanical stirring enhanced mixing device which comprises a tank body, a sealing cover is mounted on the top surface of the tank body, a stirring assembly used for stirring the interior of the tank body is mounted on the sealing cover, the stirring assembly extends into the tank body, and the stirring assembly is connected with the tank body. An air outlet head is arranged at the bottom in the tank body, the air outlet head is communicated with a steam generation unit through an air supply pipe, and the steam generation unit is electrically connected with a pulse control unit used for sending variable frequency signals with adjustable pulse frequency to the steam generation unit. The steam injection frequency is controlled through the pulse control unit, the use amount of the steam is reduced, local high temperature generated by the system during continuous injection is avoided, the temperature is more uniform, meanwhile, convection can be further strengthened through nonlinear input, the periodic structure of the system is damaged, and the service life of the system is prolonged. And more chaotic flow regions are formed to enhance mixing and heat transfer efficiency, so that the production efficiency is improved, and the energy loss is reduced.
Owner:KUNMING UNIV OF SCI & TECH

Ultrasonic atomization pulse type cold air jet cooling and lubricating device and operation process thereof

The invention relates to an ultrasonic atomization pulse type cold air jet cooling and lubricating device and an operation process thereof. The device comprises an air compressor, a cold air generator, a gas storage tank, a pulse control valve and an ultrasonic atomization nozzle module which are sequentially connected through a gas pipeline. The ultrasonic atomizing nozzle module comprises an ultrasonic transducer, a stepped amplitude-variable rod, a waterproof cover, a sealing cover and a focusing nozzle. In the working process, the stepped amplitude-variable rod amplifies the high-frequency mechanical vibration amplitude of the ultrasonic transducer, and cutting fluid is efficiently atomized into micron-sized liquid drops through the cavitation effect and the capillary wave effect; meanwhile, the cold air generator converts high-pressure air provided by the air compressor into low-temperature gas and temporarily stores the low-temperature gas in the gas storage tank, and the low-temperature gas is released in a pulse mode through the precise pulse control valve according to the set frequency and duty ratio. The pulse low-temperature gas enters the sealing cover to be fully mixed with the atomized liquid drops, uniform gas-liquid two-phase jet flow is formed, finally, the jet flow is accelerated by the focusing nozzle to form high-speed convergent jet flow, the high-speed convergent jet flow acts on a cutting area accurately, and pulse type efficient cooling and lubricating cutting machining is achieved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1

Electric actuator control method and system, electronic equipment and storage medium

The invention discloses an electric actuator control method and system, electronic equipment and a storage medium, and relates to the technical field of automatic control. The method comprises the following steps: acquiring current position data and electromagnetic signal intensity data of the electric actuator; calculating a magnetic pole position offset according to the electromagnetic signal intensity data, and determining a compensation coefficient according to the magnetic pole position offset; calculating a compensation position based on the compensation coefficient and a reference position of the electric actuator, and determining a magnetic flux distribution parameter in combination with the current position data and the compensation position; generating a pulse control signal through the magnetic flux distribution parameter, and outputting the pulse control signal to the electric actuator; and adjusting the magnetic pole position of the electric actuator to the compensation position according to the pulse control signal. By implementing the technical scheme provided by the invention, the effect of improving the control precision of the electric actuator is achieved.
Owner:TIANJIN BAILI ERTONG MACHINERY

Full-automatic intelligent door lock control method and system, medium and program product

The invention discloses a full-automatic intelligent door lock control method and system, a medium and a program product, and relates to the field of time registrations.The method comprises the steps that a retardation characteristic period is established according to a real-time working signal; progressively decreasing the driving torque according to a preset proportion at a preset time point before the second period of the two adjacent retardation characteristic periods arrives; when the change trend of the retardation characteristic period is decreased progressively, the current driving strategy is judged to be effective, and the unlocking or locking instruction continues to be executed; when the change trend of the retardation characteristic period increases progressively, establishing a pulse control sequence based on the recorded shortest retardation characteristic period; the motor is controlled to actively interrupt driving before locked-rotor through a pulse control sequence; counting the number of times of active interruption of driving in a preset time period, and when the number of times exceeds a preset threshold value, controlling the intelligent door lock to carry out failure prompt; and when the number of times does not exceed the preset threshold value, the intelligent door lock is controlled to complete unlocking or locking. The cost and the power consumption are reduced while the reliability of the intelligent door lock is improved.
Owner:SHENZHEN SHUNLI MOTOR CO LTD

On-pulse transition times for pulsed controlled electric machines using boost voltages

Various boost circuits that are used to improve or reduce the time needed to transition an electric machine from an off-state to an on-state at the start of a next pulse during pulsed controlled operation. With these various boost circuits, the naturally generated Back Electromotive Force or “BEMF” that is induced when an electrical machine transitions from the on state to the off state at the end of an on pulse is harvested, rectified, and stored on a storage device. The harvested energy is then made available to the electric machine as a “boost” voltage at the onset of the next on pulse, resulting in a reduced transition time from the off-state to the on-state.
Owner:TULA ETECHNOLOGY INC

Oil well pressure pulse control separate production method and pipe column

The invention relates to the technical field of oil field separate-layer oil production, and particularly discloses an oil well pressure pulse control separate-layer oil production tubular column, an intelligent separate-layer oil production device is arranged in the tubular column, the intelligent separate-layer oil production device comprises two oil inlet channels capable of regulating and controlling the liquid inlet flow, and an inlet of one oil inlet channel is formed in the side wall of the tubular column; the intelligent separate recovery device is connected with the pulse receiver through a signal line, the output end of the intelligent separate recovery device is connected with an oil well pump, the oil well pump is connected with a sucker rod and pumps oil out through the sucker rod, a packer is connected to the outside of the tubular column and arranged below the intelligent separate recovery device, a screen pipe is connected to the tubular column below the packer, and the screen pipe is connected with the output end of the intelligent separate recovery device. And the screen pipe is communicated with an inlet of the other oil inlet channel. According to the tubular column, specific pressure pulse codes can be generated in a shaft sleeve through the pressure pulse generator, after the pulse receiver detects and analyzes the codes, the intelligent separate recovery device is controlled to automatically adjust different opening degrees of oil nozzles of corresponding production layers according to different pulse instructions, and oil layer separate recovery is achieved without moving the tubular column.
Owner:CHINA NAT PETROLEUM CORP

Constrained pulse safety synchronization control method and system of multi-coupling time-delay network

The invention provides a pinned pulse safety synchronization control method and system of a multi-coupling time-delay network, and the method comprises the technical schemes: building a coupling time-delay dynamic network model, constructing a mathematical description of a random spoofing attack, designing a pinned pulse safety controller, and deducing a Lyapunov stability discriminant. Through defining an error system of a following network and a target network, under a pinned pulse safety control framework, based on a pulse system theory, system stability is analyzed, an attack probability is described in combination with a Bernoulli random variable, a pinned pulse control node selection strategy is finally designed, and safety synchronous control is successfully realized. The mechanism can effectively extract time delay information with a stabilization effect in a continuous system, and fuses the time delay information into the design of an anti-attack containment pulse safety controller, so that the synchronization safety of the system is remarkably improved, the resource allocation efficiency is optimized, and the attack influence is weakened by utilizing inherent time delay.
Owner:CHANGSHU INSTITUTE OF TECHNOLOGY

Steep pulse ablation coordination control system and method based on three-dimensional dynamic electrode array

The invention relates to the technical field of medical instruments, in particular to a steep pulse ablation coordinated control system and method based on three-dimensional dynamic electrode array.The steep pulse ablation coordinated control system comprises a multi-degree-of-freedom electrode array module, a dynamic pulse control module, a multi-modal fusion module and an intelligent optimization module; self-adaptive layout is carried out according to the shape and size of a tumor, the electrode needles can be accurately distributed no matter the tumor is spherical or irregular, for the tumor with the diameter being 3.5 cm close to the porta hepatis, six-electrode annular arrangement and vertical insertion of a central electrode can be planned, and the distance between the electrodes can be dynamically adjusted; the problems that a traditional electrode is rigid in layout and difficult to adapt to complex tumor forms are effectively solved, it is ensured that an electric field completely covers a tumor area, the matching degree of an ablation area is improved, and complete ablation of irregular tumors is facilitated.
Owner:ZHEJIANG CHUANGYU KETAI MEDICAL EQUIPMENT CO LTD

Pulsed electric machine control

Methods, controllers and electric machine systems are described that facilitate pulsed control of electric machines (e.g., electric motors and generators) to improve the machine's energy conversion efficiency. Under selected operating conditions, the electric machine is intermittently driven (pulsed). The pulsed operation causes the output of the electric machine to alternate between a first output level and an off state. The output levels are selected such that the electric machine has a higher energy conversion efficiency during the pulsed operation than the electric machine would have when operated at a third output level that would be required to drive the electric machine in a continuous manner to deliver the desired output. In some embodiments, the power converter it turned off during at least portions of the time that the electric machine is pulsed off.
Owner:TULA ETECHNOLOGY INC

Complex network distributed containment pulse control method based on dual-channel attack

The invention relates to the technical field of distributed pulse control, in particular to a complex network distributed containment pulse control method and system based on dual-channel attack and a computer readable storage medium, and the method comprises the steps: building a complex dynamic network and a leader node; pinning nodes are selected from the complex dynamic network; constructing a distributed delay containment pulse controller; constructing an error network; and solving the distributed control intensity, the pulse interval and the pulse time delay of the distributed delay contained pulse controller based on a constraint condition for stabilizing the global index of the error network to obtain a target distributed delay contained pulse controller. The distributed delay containment pulse controller constructed by the invention enables the network to quickly realize synchronization under the combined action of dual-channel fraud attacks, thereby improving the network security and reducing the control cost on the aspects of time and space.
Owner:JIANGNAN UNIV

Complex electromagnetic environment construction method based on real-time pulse synchronization

The invention discloses a complex electromagnetic environment construction method based on real-time pulse synchronization. Pulse sorting and output channel distribution are carried out according to radar priority and pulse arrival time; the radar signal simulator sends the corresponding pulse control word sequence to the corresponding radio frequency feed channel of the antenna array according to the channel distribution result of each radar pulse; each radio frequency feed channel of the antenna array calculates the control word required by each radar pulse in real time according to the received radar pulse related control word and caches the control word; each signal simulation channel of the radar signal simulator generates a corresponding radar pulse signal according to a corresponding radar pulse control word, the radar pulse signal is sent to a corresponding radio frequency feed channel of the antenna array through the real-time pulse synchronization device, and the antenna array inquires and obtains an array control word corresponding to the radar pulse according to a radar number. State switching control is carried out on the radio frequency feed channel; the maximum utilization of channel resources is realized, and the radar signal simulation number and the complex environment pulse density are improved.
Owner:UNIT 63892 OF PLA

Method for controlling battery power interface converter with ultra-wideband EIS measurement function

The present disclosure is a method for controlling a battery power interface converter with an ultra-wideband EIS measurement function. According to the present disclosure, a discrete pulse control method based on discrete pulse modulation is adopted, which, by generating two discrete duty ratio signals and according to a relationship between a battery charging current and a reference current, selects an appropriate duty ratio signal from the two discrete duty ratio signals to generate a control pulse signal to act on the battery power interface converter. The method of the present disclosure achieves accurate tracking of the output current of the power interface converter to DC charging or ultra-wideband hybrid reference current. A battery charging control system can achieve a normal constant-current charging function while operating in a constant-current charging mode and the ultra-wideband EIS of a battery accurate measurement function in an EIS measurement mode.
Owner:SOUTHWEST JIAOTONG UNIV

Pulse generation circuit, sterilization device and household appliance

The invention discloses a pulse generation circuit, a sterilization device and a household electrical appliance, and the circuit comprises a rectification unit which is connected with an AC power supply and is used for converting an AC power into a first DC power; the voltage conversion unit is respectively connected with the rectification unit and the energy storage unit and is used for converting the first direct current into second direct current and charging the energy storage unit; the pulse generation unit is used for generating pulse voltage based on the voltage at the two ends of the energy storage unit and providing the pulse voltage to a load; the first voltage detection unit is used for detecting voltages at two ends of the energy storage unit; and the control unit is used for controlling the voltage conversion unit to charge the energy storage unit and outputting a target pulse control signal to control the pulse generation unit to generate a pulse voltage when the voltage at the two ends of the energy storage unit reaches the target voltage so as to trigger the load to start. The circuit can reduce the power supply cost of the load.
Owner:WUHU MATY AIR CONDITIONING EQUIP CO LTD +1

Argon gas cluster ion polishing machine and polishing method of diamond crystal workpiece

The invention provides an argon gas cluster ion polishing machine and a diamond crystal workpiece polishing method. The polishing machine comprises a pulse control valve used for generating pulse type airflow beams, and a nozzle device, a beam splitter, an ionizer, an absorption electrode, an accelerator and a permanent magnet which are sequentially arranged in the spraying direction of the pulse type airflow beams. The nozzle device is used for spraying pulse type airflow beams; wherein the pulse type airflow beam comprises divergent argon atom airflow and neutral cluster particle flow concentrated on a central shaft; the beam splitter is used for screening and separating neutral cluster particles and argon atoms in the pulse type airflow beam; the ionizer is used for ionizing the neutral cluster particles into cluster ions; the suction electrode is used for guiding the ionized ionomer clusters to form an initially converged conical airflow beam; the accelerator is used for focusing and accelerating the conical airflow beam; the permanent magnet is used for separating ions with different masses to form a pure cluster ion beam; and high-quality polishing of the surface of the diamond crystal workpiece can be achieved.
Owner:SHENZHEN RES INST OF WUHAN UNIVERSITY

Two-stage anti-attack coupling memristor neural network finite time bisection synchronization control method based on T-S fuzzy model

The invention discloses a T-S fuzzy model-based two-stage anti-attack coupling memristive neural network finite time bipartite synchronization control method. The method comprises the steps of establishing a memristive neural network model and a symbol topological structure; converting the memristive neural network model into a fuzzy coupling memristive neural network model, defining a synchronous error state variable, and establishing an error system of the memristive neural network; converting the error system into a form based on differential inclusion; a two-stage finite time synchronous controller is designed, in the first stage, when the state of an error system meets the condition, a pulse controller based on a hybrid trigger mechanism is designed to resist spoofing attacks; and in the second stage, a controller combining finite time control and fixed time control mechanisms is designed to resist DoS attacks. According to the invention, a two-stage controller is designed, and the controller integrates pulse safety control, feedback control and a finite time and control mechanism, and can simultaneously resist spoofing attacks with energy constraints and DoS attacks with random outbreak features.
Owner:CHANGSHU INSTITUTE OF TECHNOLOGY

Y-zone treatment device using pulse-controlled LED

A Y-zone treatment device using a pulse-controlled LED, presented in the present invention, comprises: a Y-zone treatment unit, which generates an LED light for female Y-zone treatment at the position of a female Y-zone area; and a driving control unit for controlling the driving of the Y-zone treatment unit, which generates the LED light for female Y-zone treatment at the position of the female Y-zone area, and controlling pulse width by pulse width modulation (PWM) for driving of the Y-zone treatment unit, and thus the female Y-zone can be treated with light emission of an LED in the female Y-zone area by wearing the device on the female Y-zone area, and the temperature can be controlled by means of pulse width control of PWM.
Owner:MEDMIX CO LTD

Power unit dead time control method and system, power unit, converter, storage medium, electronic equipment and computer program product

The invention provides a control method for dead time of a power unit. The power unit comprises a power semiconductor device module and a driving module. The control method comprises the steps of obtaining a current value of the power unit; determining the turn-off time of the power semiconductor device module according to the current value and a preset relation table, wherein the preset relation table comprises a corresponding relation between the determined current value and the turn-off time based on the type of the power semiconductor device module; determining the dead time of the power semiconductor device module according to the turn-off time; and determining a driving pulse of the driving module according to the dead time, so that the driving pulse controls the power semiconductor device module to realize the dead time. According to the technical scheme of the invention, the dead time of the power semiconductor device module is automatically updated according to the current value of the power unit, and the probability of current short circuit caused by simultaneous conduction of two power switches in a bridge arm in the power semiconductor device module is reduced. And thus, the stability of equipment or a system comprising the power unit is improved.
Owner:NR ELECTRIC CO LTD +2

High-side driving circuit applied to gallium nitride fully-integrated half-bridge power chip

The invention discloses a high-side driving circuit applied to a gallium nitride fully-integrated half-bridge power chip, and belongs to the field of power integrated circuits. The circuit comprises an input stage circuit, an anti-VSW negative voltage shift circuit and a low-power-consumption output stage circuit. Wherein the anti-VSW negative voltage shift circuit guarantees correct transmission of a signal under a VSW node negative voltage condition through a negative voltage transmission structure, and in addition, the anti-VSW negative voltage shift circuit can generate an advanced pulse control signal for the low-power-consumption output stage circuit; and the low-power-consumption output stage circuit only charges the bootstrap capacitor in a short time before the output state is changed through the advanced pulse control signal, so that the problem of high power consumption of a capacitor charging branch in a traditional scheme is greatly relieved. According to the invention, the signal transmission reliability of the high-side driving circuit under the negative-voltage working condition is remarkably improved, the static power consumption is effectively reduced, and the high reliability and low power consumption requirements of the gallium nitride fully-integrated half-bridge driving chip on the high-side access are considered.
Owner:SOUTHEAST UNIV +1