2191 results about "Voltage source" patented technology

The invention discloses a power coupling-considered capacity ratio estimation method for a network-constructing / network-following multi-machine hybrid system, and the method comprises the steps: building a GFL-GFM hybrid system model, combining VSG power coupling small signal modeling and a dynamic relative gain matrix (DRGA), and quantifying the coupling strength of active / reactive power to output voltage; the frequency domain impedance characteristic of the GFM converter is simplified, and an ideal voltage source series equivalent reactance equivalent model is constructed; deriving an analytical relationship between a generalized short-circuit ratio (gSCR) and a capacity ratio based on the model, and generating a ratio formula in combination with engineering boundary sub-scenes to form a ratio range suitable for multiple scenes; for coupling time-varying characteristics, a closed-loop mechanism of'mixed mode-coupling sensing-correction calculation-execution feedback 'is constructed, and the ratio is dynamically adjusted. According to the method, coupling quantization and multi-machine coordination control are deeply fused, the problem that the external characteristic model precision and the multi-working-condition adaptability are difficult to consider under complex environment coupling is effectively solved, and the engineering applicability of the hybrid fan system is enhanced.

A device for extracting CO2 from air comprises at least one extraction reactor (12) through which CO2-containing air (L) flows in an adsorption operation, having an adsorption surface; a heating arrangement (40) for heating the at least one extraction reactor (12) at least in the region of its adsorption surface to a temperature above an extraction gas desorption temperature in a heating / desorption operation; and at least one extraction gas storage (48) for storing CO2 desorbed from the at least one extraction reactor (12) in the heating / desorption operation. The extraction reactor (12) comprises at least one substrate with a plurality of flowable cells or flow channels of a porous structure, wherein the adsorption surface is formed on the substrate, and wherein the at least one substrate is electrically conductive and can be heated by applying an electrical voltage.wherein the heating arrangement (40) comprises the at least one substrate and a voltage source (42) for applying an electrical voltage to the at least one substrate.

The invention discloses an open-phase self-fault-tolerant control method for a phase-shift-free dual three-phase permanent magnet synchronous motor. The method can automatically adjust a current distribution relation in the case of an open-phase fault and suppress torque pulsation in combination with neutral point voltage compensation. Comprising the following steps: driving two pairs of three-phase winding modules of the phase-shift-free DTP-PMSM in parallel by adopting two two-level three-phase voltage source inverters, and providing a mathematical model of the motor; current distribution is automatically adjusted; compensating the voltage of the neutral point, and calculating the offset of the fault module; the current is redistributed to suppress the torque ripple after the fault, and the secondary oblique wave component generated by the phase failure fault is eliminated; a current loop controller is improved through dead-beat predictive control; the speed ring controller is optimally designed into an improved sliding mode controller; an improved double-loop controller system is formed by combining improved sliding mode control and dead-beat prediction control, high-gain parameters are set to improve the dynamic response performance of the system, and a new self-fault-tolerant control system is formed.

The invention discloses a weight coefficient-free model prediction control system and method for a permanent magnet synchronous motor, and particularly belongs to the field of permanent magnet synchronous motor control. The control system comprises a direct current voltage source, a three-phase converter, a permanent magnet synchronous motor, a rotating speed outer ring PI control module, an MTPA flux linkage calculation module and a model prediction control module. The control method comprises the following implementation steps: firstly, establishing a torque and flux linkage prediction model of the permanent magnet synchronous motor; then, a reference torque amplitude value and a reference flux linkage amplitude value are obtained through a rotating speed outer ring PI controller and a maximum torque per ampere (MTPA) calculation module respectively; secondly, constructing an independent torque cost function and a flux linkage cost function according to the torque error and the flux linkage error, and forming a cascade form; evaluating the switching states by using a cost function, selecting two vectors from the eight switching states of the converter by using the independent cost function of the torque (or flux linkage), and selecting an optimal vector from the two vectors by using the independent cost function of the flux linkage (or torque); and finally, the execution sequence of the torque and flux linkage cost function is alternated in each subsequent period. Compared with the prior art, the method avoids complex weight coefficient design through a cost function cascading mode, alternates the execution sequence of the cost functions in each period, dynamically balances the weights of the two control targets, and reduces the number of calculation times.

The invention discloses an eddy current displacement sensor sine constant current source excitation method, and belongs to the technical field of sensor measurement and control. The method comprises the following steps: S1, generating positive and negative symmetric reference voltages through a reference voltage source circuit; s2, outputting a square wave control signal with adjustable frequency by the control chip, and driving a switching circuit to generate a square wave taking the positive and negative reference voltage as a level; s3, processing the square wave through a filter circuit to obtain a standard sine wave voltage signal; and S4, converting the sine voltage signal into sine constant current source excitation through a Howland current source circuit, and outputting the sine constant current source excitation to a sensor probe coil. According to the invention, through combination of digital control and analog conversion, the circuit structure is simplified, the cost is significantly reduced, and convenient adjustment of the output frequency and high stability and precision of the output current are realized at the same time.

The invention discloses a voltage source type energy storage small signal stability analysis method based on a virtual synchronous machine. A small signal state space model including active control, reactive control, double closed-loop control and a lithium battery energy storage module is established, a characteristic value analysis method is used for solving a state matrix characteristic root, system stability is evaluated, and an oscillation mode is identified. By drawing characteristic root trajectories of key parameters such as virtual rotational inertia, virtual damping coefficients and double-closed-loop PI parameters, an influence rule of the parameters on system stability is analyzed. According to the method, the dynamic response characteristics of the system can be accurately quantified, theoretical support is provided for control strategy optimization and parameter design of the voltage source type energy storage system, and the stability and reliability of a power grid in a renewable energy source grid-connected scene are effectively improved.

The invention relates to the technical field of new energy grid-connected control, in particular to a fault stage transient stability analysis method and system for a following-constructed network type converter series-parallel system, and the method comprises the steps: enabling a constructed network type converter to be equivalent to a controlled voltage source series impedance, enabling a following network type converter to be equivalent to a controlled current source, and enabling the controlled current source to be equivalent to a controlled voltage source series impedance; the whole series-parallel system is equivalent to a scene in which double voltage sources and a single current source are jointly connected in parallel to a PCC point, and a series-parallel system model is constructed; according to the series-parallel system model, respectively representing an active power coupling term of the network-building type converter and a voltage coupling term of the network-following type converter under the condition of considering parallel connection of the network-following type converter and the network-building type converter; according to the coupling term, remodeling an active loop control structure of the network-constructing converter and a phase-locked loop synchronization structure of the network-following converter, and obtaining a transient analysis model of the series-parallel system considering the coupling term; the transient stability of the hybrid system in the power grid fault stage is analyzed through the transient analysis model, and the influence on the transient stability is effectively represented.

The invention relates to the technical field of integrated circuits, in particular to a band-gap reference voltage source circuit with high-order compensation, which comprises a PTAT (proportional to absolute temperature) generation circuit, a high-order compensation circuit and a pre-voltage-stabilizing circuit, wherein the PTAT generation circuit generates PTAT current, and the high-order compensation circuit performs second-order compensation on the PTAT current; the pre-voltage-stabilizing circuit is used for driving the PTAT generation circuit and the high-order compensation circuit and comprises a starting circuit, a positive feedback loop and a negative feedback loop; the gain of the positive feedback loop is lower than that of the negative feedback loop; according to the band-gap reference voltage source circuit, the temperature coefficient and the power supply rejection ratio of the circuit are remarkably optimized by integrating high-order temperature compensation, a pre-adjusting power supply and a high-gain feedback loop, and the designed band-gap reference voltage source circuit has the advantages of being extremely low in temperature drift and high in precision.

The invention belongs to the technical field of semiconductor processing, and particularly relates to an electrostatic chuck power supply with independent bias voltage, adsorption equipment and a control method.The power supply comprises a direct-current high-voltage module and a first power supply polarity switching module which are connected in sequence, and the first power supply polarity switching module outputs bipolar voltage used for adsorbing an electrostatic chuck; the system further comprises a control module, a bias voltage module and a second power supply polarity switching module. The output end of the second power supply polarity switching module is electrically connected with the direct-current high-voltage module. The bias voltage module obtains a direct current input voltage and outputs a bias voltage to the second power supply polarity switching module, the second power supply polarity switching module switches the polarity of the bias voltage and outputs the polarity to the direct current high voltage module under the control of the control module, and meanwhile, the bias voltage can be independently output as a voltage source. The bias voltage can meet the dynamic adjustment requirement in the wafer adsorption process, and is suitable for application scenes where the bias voltage needs to be independently used.

The invention relates to the technical field of high-voltage VI modules, and particularly discloses a high-voltage VI source module for SOC testing, which comprises an output stage module, a sampling module and a control and conversion module, the output stage module is constructed by adopting discrete high-voltage power devices, supports four-quadrant operation, and can realize flexible output and absorption of voltage and current; the sampling module is composed of a voltage sampling unit and a current sampling unit which respectively monitor voltage and current signals of the output stage in real time. The control and conversion module comprises a control unit and a digital-to-analog conversion unit; the digital-to-analog conversion unit is responsible for converting a digital control signal into an analog control signal to drive the output stage and converting analog voltage and current signals collected by the sampling module into digital feedback signals; and the control unit receives the digital feedback signals and adjusts the output of the digital-to-analog conversion unit in real time through a closed-loop control algorithm, so that high-precision and high-stability control on the output-stage voltage or current is realized.

The invention discloses a resistance voltage divider calibration system, method and device based on a self-calibration frequency counter and a medium, and relates to the technical field of metering calibration. The system comprises a stabilized voltage source, a resistance voltage divider, a high-speed electronic switch, a voltage-frequency converter, a self-calibration frequency counter, a satellite signal receiver, an electric energy metering chip and a CPU. According to the invention, the output signal of the voltage divider is connected to the voltage-frequency conversion channel through a specific time sequence, the pulse sequence in proportion to the voltage is generated by using the inherent linear characteristic of the output signal, then the pulse sequence is subjected to high-precision counting and comparative analysis through the self-calibration frequency counter, and finally the dynamic correction of the voltage division ratio parameter is realized. According to the technical path, an external reference source and high-precision voltage measurement equipment do not need to be introduced, in-situ calibration of the characteristic parameters of the voltage divider can be completed in a remote mode, and the long-term stability of the high-voltage electric energy metering device in a complex electromagnetic environment is remarkably improved.

The invention discloses a battery internal short circuit detection method and device which are applied to a battery pack comprising a plurality of single batteries, and the method comprises the steps: obtaining the current information of the battery pack and the voltage information of each single battery; constructing observed quantity representing monomer difference, and estimating a first difference parameter representing monomer voltage source characteristic difference and a second difference parameter representing monomer impedance characteristic difference on line by adopting nonlinear filtering to obtain a corresponding time sequence; segmenting the time sequence according to a preset operation period, and performing weighted convergence according to weights related to electric quantity changes to obtain corresponding characteristic parameters; and constructing a first statistical discrimination quantity and a second statistical discrimination quantity which reflect extreme value deviation and fluctuation deviation based on the periodic characteristic parameters, performing joint discrimination with a threshold value, and determining an internal short circuit when abnormal monomers are consistent and meet a continuous periodic criterion. According to the method, through difference observation, filtering estimation, periodic weighting and double-discriminant-quantity combined judgment, the discriminant stability and reliability under working condition fluctuation and noise interference are improved.

The invention is suitable for the technical field of power system high-voltage electrical equipment test, and provides a high-voltage circuit breaker direct test loop parameter setting method based on a particle swarm optimization algorithm, and the method comprises the steps: enabling a three-phase direct test loop to be equivalent to a single-phase loop according to symmetry, and enabling a transformer, an electric reactor, a power grid or an impact generator to be equivalent to an inductor and a voltage source; establishing an equation set according to the KCL, the KVL and element characteristics; performing nondimensionalization by using the voltage and current standard values and the conversion relation between the time domain and the angle domain to obtain a dimensionless equation; sorting to obtain a differential equation of per unit values of voltages at two ends of the circuit breaker and dimensionless parameters; and constructing an optimization search space and value function by taking the dimensionless parameters as decision variables of a particle swarm optimization algorithm, and operating the algorithm for multiple times to obtain the optimal dimensionless parameters so as to complete loop parameter setting. According to the scheme, test loop parameter setting can be automatically completed, manual debugging is reduced, the setting efficiency and precision are improved, and it is guaranteed that a circuit breaker test result meets the standard.

Disclosed is a test device to test the operation of an MMC by fabricating only one or several SMs constituting the MMC testing under real-time operating conditions. The test device for a modular multi-level converter (MMC) includes a simulation model of an MMC having at least one arm to which sub modules (SMs) are serially connected, at least one test target SM among the serially connected SMs being replaced with a dependent voltage source; an arm current simulation circuit including an equivalent SM that implements the test target SM as actual physical hardware and an inverter that supplies current to the equivalent SM; and a control unit configured to control the arm current simulation circuit to correspond to an operation of the simulation model and set a voltage corresponding to a charge / discharge voltage of the equivalent SM of the arm current simulation circuit to the dependent voltage source.

The invention provides a zero-voltage ride-through control method for a self-synchronizing voltage source doubly-fed wind turbine generator, which comprises the following steps that: when the self-synchronizing voltage source doubly-fed wind turbine generator is in a transient state, a grid-side converter adopts vector control, and a rotor-side converter adopts additional virtual impedance and annular current limiting; the transient overcurrent of the grid-side converter and the rotor-side converter can be effectively suppressed, so that the continuous operation capability of the wind turbine generator in the zero-voltage ride-through period can be maintained; meanwhile, by improving the transient capacity and the transient reactive current amplitude of the converter, the transient voltage supporting capacity of the wind turbine generator during the zero voltage ride-through period can be effectively provided; when the self-synchronizing voltage source doubly-fed wind turbine generator set is in a transient state, overvoltage of direct-current bus voltage is limited by a Chopper circuit, active-priority current amplitude limiting control is adopted by a grid-side converter, parameters of a current inner ring PI controller of a rotor-side converter are optimized, energy balance of a direct-current side can be achieved in the zero-voltage ride-through period, and stability of the direct-current bus voltage is maintained.

The invention belongs to the field of power system control, and discloses a direct-driven wind turbine generator network type-following network type dual-mode switching control method and system based on network side-machine side converter control conversion. According to the method, on the basis that grid-connected stability of the direct-driven fan is maintained, the control capability of a grid-side converter and a machine-side converter is fully combined, and the control capability of the direct-driven fan as a voltage source and a current source is excavated, so that when a voltage short-circuit ratio is changed due to access of large-scale new energy, the voltage short-circuit ratio is changed. The grid-connected flexibility and control free undisturbed switching of the direct-driven fan can be realized, and the grid-connected stability and adaptive capacity of the direct-driven wind power plant are improved.

The invention relates to a virtual inertia-damping cooperative adaptive control method for a voltage source type direct-driven permanent magnet wind turbine generator. The method comprises the following steps: constructing a voltage source type direct-driven permanent magnet wind turbine grid-connected equivalent model; constructing a wind turbine generator frequency response model based on a dynamic coupling relationship between virtual inertia and virtual damping; collecting a frequency signal of a common connection point of a power grid, and carrying out collaborative optimization processing on the frequency signal by adopting a composite filter to obtain a virtual power increment; the active power reference value is introduced into an active power control loop of the grid-side converter; and controlling the power grid side converter after the additional power reference value is introduced by adopting a rotational inertia and damping coefficient adaptive control method based on a nonlinear function. According to the method, frequency steady-state deviation compensation and dynamic change rate correction can be realized, the frequency stability under wide-range disturbance can be improved through segmented nonlinear adjustment, and the requirements of unit active inertia response and power grid frequency stability are met.

The invention discloses a flexible AC / DC hybrid power distribution network fault recovery optimization method and system based on multi-agent deep reinforcement learning, a computer device and a non-transient computer readable storage medium, and the method comprises the steps: firstly constructing an AC / DC power distribution network model considering the operation characteristics of a flexible switch and a voltage source converter; then, flexible equipment is modeled as an independent agent, a multi-agent training architecture is established, a composite reward function fusing a load recovery rate, voltage stability and operation safety is designed, and a mechanism combining centralized training and distributed execution is adopted to realize multi-point cooperative control between the flexible equipment; and finally, designing a recovery optimization process for rapid decision and control execution after the fault. The method can realize higher load recovery rate and better voltage control performance in various fault scenes, has the advantages of strong decision real-time performance, good system expandability, strong strategy generalization ability and the like, and is suitable for autonomous recovery and intelligent regulation and control of the novel flexible AC / DC hybrid power distribution network.

A substrate processing apparatus according to an exemplary embodiment includes a chamber, a source power supply that provides power for exciting plasma in a form in which the power level pulses, a support member that is disposed inside the chamber and supports a substrate, and a bias voltage supply that is connected to the support member and supplies a voltage for bias, and the power level of the output of the source power supply falls at a power fall time, and the voltage level of the output of the bias voltage supply rises from a control voltage level to a reference voltage level at an end time, and the end time is positioned later than the power fall time by a margin time.

The invention discloses a dynamic tunable zero-level electro-optical wave plate system, a device and a preparation method, and belongs to the technical field of optical devices. The invention provides a dynamic tunable zero-order electro-optical wave plate system, and the system comprises a zero-order electro-optical wave plate device which comprises a wave plate substrate made of an electro-optical crystal of a non-centrosymmetric structure, and an electrode disposed on the wave plate substrate; the output end of the adjustable voltage source is electrically connected with the electrode; wherein the adjustable voltage source is configured to be capable of outputting a half-wave working voltage corresponding to a target working wavelength, so that the zero-order electro-optical wave plate device works at the target working wavelength as a half-wave plate. According to the invention, self-adaptive matching of a single device to a plurality of working wavelengths is realized, the problem that the working wavelength of the device is single due to material dispersion is solved, and meanwhile, the processing difficulty of an ultrathin structure required by a specific wave band is avoided.

The invention discloses a low-power-consumption low-temperature-drift band-gap reference voltage source which comprises a VBE nonlinear term compensation circuit and an output voltage generation circuit, the VBE nonlinear term compensation circuit is matched with a bipolar transistor through an MOS tube current mirror image, the nonlinear temperature drift of output voltage is compensated, linearized VBE voltage is generated, and the output voltage generation circuit is connected with the VBE nonlinear term compensation circuit. And the output voltage generation circuit generates a voltage in direct proportion to absolute temperature through a differential pair structure, superposes the voltage with the linearized VBE voltage, and outputs a reference voltage. According to the low-power-consumption low-temperature-drift band-gap reference voltage source, temperature drift is compensated through the VBE nonlinear term compensation circuit, the output voltage generation circuit integrates signals to generate initial stable reference voltage, the temperature drift coefficient trimming circuit finely adjusts the temperature drift coefficient, and finally the reference voltage which is high in precision, low in temperature drift and good in consistency is output.

An acoustically driven ferromagnetic resonance (ADFMR) device has a piezoelectric element comprised of piezoelectric material, first and second electrodes arranged in a vertical stack with the piezoelectric element to activate the piezoelectric element to generate an acoustic wave, a radio frequency voltage source electrically connected to the first electrode, a magnet comprised of a magnetostrictive material to receive the acoustic wave, the magnet being in the vertical stack with the first and second electrodes and the piezoelectric element, wherein the acoustic wave resonates at a ferromagnetic resonance of the magnetostrictive material, and a readout circuit to detect a change in the acoustic wave by detecting g one of an output voltage amplitude, a change in impedance or a reflection of the acoustic wave in the magnet to measure an unknown magnetic field in which the ADFMR device resides and as experienced at the magnetostrictive element.

A system includes a memory array, a temperature sensor including a temperature-dependent circuit, a ramp voltage source producing a ramp voltage that increases from a predefined starting value, and at least one processing device, operatively coupled with the memory array, the temperature sensor, and the ramp voltage source. The at least one processing device is to perform operations including determining a reference phase value reflecting a first amount of time for the ramp voltage starting at the predefined starting value to reach a reference voltage value, determining a sampling phase value reflecting a second amount of time for the ramp voltage starting at the predefined starting value to reach a temperature-dependent voltage value produced by the temperature-dependent circuit, and causing, based on the reference phase value and the sampling phase value, a temperature within the memory device to be determined.

The invention discloses a new energy system frequency domain modeling and equivalent circuit order reduction analysis method, and relates to the technical field of new energy power system modeling and stability analysis. The method is used for solving the problems that in an existing frequency domain modeling means, the automation degree of data acquisition is low, fitting precision and stability are poor, equivalent circuit universality is poor, and order reduction analysis is not systematic. The method comprises the following steps: acquiring system frequency domain response data based on disturbance injection; constructing a system rational function model by adopting an improved vector fitting algorithm; and then model order reduction is realized through state space modeling and an SVD-based balanced truncation method, and response consistency and stability analysis is carried out in a frequency domain and a time domain. The method can be widely applied to modeling analysis of new energy equipment such as wind power equipment, voltage source converters and high-voltage direct-current power transmission equipment, and has the advantages of being high in automation degree, high in modeling precision, good in visualization, clear in structure, suitable for simulation and control design and the like.

In one example, a circuit includes a first transistor having a first terminal coupled to a first supply voltage source, a second transistor coupled between a second terminal of the first transistor and a ground terminal, and a voltage clamp circuit coupled between the first supply voltage source and the ground terminal. The circuit may further include a first switch coupled between a control terminal of the first transistor and a second supply voltage source, the first switch having a control terminal coupled to the second terminal of the first transistor, a second switch coupled between a control terminal of the second transistor and the second supply voltage source, the second switch having a control terminal coupled to the ground terminal, and a filter coupled between the control terminal of the second transistor and the ground terminal.

A general decoupling method and system for electromagnetic transient simulation of a VSC are provided. The method includes: determining state equations of equivalent circuits and switch state tables of different VSCs; splitting the state equations, and decoupling and delaying capacitor elements and inductor elements to determine split equations; determining a recurrence relation of a state variable group with respect to a time sequence based on each split equation; obtaining a topological structure of a to-be-simulated VSC, and determining a decoupling model circuit; determining a switch state of the to-be-simulated VSC at a current simulation moment, and constructing a final decoupling model circuit; determining an external port voltage based on the final decoupling model circuit; and updating the state variable group at the current simulation moment based on the external port voltage and the parameters of the decoupling model circuit corresponding to the switch state.

Methods, systems, and devices for techniques for non-volatile initialization, such as not-and (NAND) initialization, are described. One or more dies of a memory system may perform an automatically-triggered initialization procedure prior to one or more controllers of the memory system completing a wakeup procedure. For example, the memory system may transition from an idle state to an awake. Accordingly, the one or more dies may perform an initialization procedure in response to a first voltage source, a second voltage source, or both, satisfying respective thresholds, such as by reaching a ready state. After, or in conjunction with, the initialization procedure, the one or more controllers may perform the wakeup procedure in response to the transition of the memory system from the idle state to the awake state, such that the wakeup procedure is performed after a start of, or simultaneously with, the initialization procedure at the one or more dies.

There is provided a circuit for monitoring an insulating property of a fuel cell stack, comprising: a low-frequency voltage source for negatively injecting a low-frequency signal only to a high-voltage bus of the fuel cell stack; a first resistor; and a second resistor; wherein the low-frequency voltage source, the first resistor and the second resistor are connected in series, and the low-frequency voltage source, the first resistor and the second resistor which are connected in series are connected with a high-voltage bus negative ground insulation resistor of the fuel cell stack in parallel; and the voltage on the first resistor can be measured so as to be used for determining the insulating property of the fuel cell stack. Therefore, the low-frequency voltage source only injects the low-frequency signal at the negative single side of the high-voltage bus, so that only the insulating property of the negative single side of the high-voltage bus is reduced, and the insulating property of the positive side of the high-voltage bus is not influenced.

An electrolysis system has at least two electrolysis installations, a power supply source with a direct voltage output, and a central supply line connected to the direct voltage output. A direct current, at a first direct voltage, can be fed into the central supply line. The electrolysis installations are connected electrically in parallel to the central supply line. For a direct voltage supply from the public power grid a central voltage source converter converts an input-side alternating voltage into the output-side first direct voltage at a direct voltage output. Each electrolysis installation is connected via a DC / DC converter that converts the first direct voltage into a second direct voltage, parallel to the direct voltage output so that the second direct voltage drops across the electrolysis installation. Each of the DC / DC converters can be controlled and / or regulated for adapting a level of its second direct voltage.

The invention provides a single-photon detector gating signal generation system and generation method. The system comprises a bias voltage source; the gating circuit is provided with a first sine branch and a second sine branch, the first sine branch is configured to output a first sine voltage signal, and the second sine branch is configured to output a second sine voltage signal; the frequency of the first sinusoidal voltage signal is greater than that of the second sinusoidal voltage signal; the second sinusoidal voltage signal, the first sinusoidal voltage signal and the bias voltage signal are matched to generate a gating signal acting on the avalanche photodiode; based on the period of the first sinusoidal voltage signal, the gating signal has an amplitude greater than a preset value in a continuous first number of periods, and the gating signal does not have an amplitude greater than the preset value in a subsequent continuous second number of periods. The generated gating signal can accelerate the carrier removal process from the physical mechanism level, the post-pulse probability is suppressed, the required dead time is effectively shortened, and the data rate of the detector is further improved.