60results about How to "Good dynamic response" patented technology

The invention belongs to the field of grid-connected converter control methods, and discloses a torque quantization-based low-frequency oscillation suppression method for a direct-current voltage synchronous inverter, which constructs a grid-connected damping torque model of the inverter, quantifies a damping torque and a synchronous torque of a system and describes oscillation characteristics of the system. When oscillation is unstable and damping or synchronous torque is a negative value, the provided compensation torque stabilizer is introduced through angular frequency deviation, a lag phase of the system at the oscillation frequency is compensated by using a lead-lag corrector, and then the compensation torque stabilizer is fed back to an active power reference value. By designing the compensation torque, it is ensured that the synchronous torque and the damping torque of the system are positive values all the time, and oscillation instability is effectively restrained. The method is suitable for a small-disturbance working condition, the steady-state characteristic of inverter operation is not changed, the grid-connected stability of the grid-forming type photovoltaic inverter is improved, and meanwhile scheduling optimization and energy efficiency evaluation of the system are not affected.

The invention relates to the technical field of intelligent power grids, in particular to a grid-connected control method for an improved RBF (Radial Basis Function) network construction type converter with active support capability. The method comprises the following steps: firstly, taking a group of initial values in a VSG system virtual inertia and equivalent damping coefficient parameter value range; determining an initial angular frequency according to the initial value and a swing equation; a VSG secondary control system is improved, an improved phase self-tracking pre-synchronization method without a phase-locked loop is added, a voltage deviation signal is responded, a frequency phase is compensated, and the rotational inertia and the damping coefficient of the system are adjusted in real time to respond to the change of the system state. According to the neural network, the virtual inertia, the damping coefficient and the angular velocity compensation amount are adaptively adjusted, and whether parameters accord with criteria is compared, so that the input parameters are corrected, the influence of disturbance on the system frequency and the output active power is reduced, the dynamic response process of the system is improved, and the stability of the system is improved. And system output power distribution errors and overshoot caused by a rotor motion equation are reduced.

The invention discloses a permanent magnet synchronous motor active disturbance rejection speed control method based on a double-error correction extended state observer, and the method comprises the steps: constructing a double-error correction extended state observer structure combining a speed estimation error and a position estimation error, and outputting a speed ring lumped disturbance observation value to a feedback control law. An optimized observer parameter setting strategy is designed based on the control structure, decoupling configuration of a zero point and a pole point in a disturbance suppression function is achieved, the position of the zero point in the disturbance suppression function is optimized by combining time domain and frequency domain analysis, and the disturbance suppression performance of the system is enhanced. Therefore, the method has the advantages that on the premise that pole assignment of an original closed-loop system is not affected, the dynamic response and steady-state performance of disturbance suppression are enhanced through the additional zero-point movement track, and the degree of freedom of performance adjustment of the linear expansion state observer and the upper limit of disturbance suppression performance are widened.

The invention discloses a PID (Proportion Integration Differentiation) parameter optimization method based on an improved graffiti search algorithm, and relates to the technical field of PID. The invention aims to solve the problems of insufficient local search capability, slow convergence speed and poor system stability in the prior art, thereby realizing a better PID parameter optimization effect. Specifically, the PID parameter optimization method based on the improved graffiti search algorithm comprises the following steps: constructing a PID controller model; a step of replacing a fixed perception probability and a step length in the model with an adaptive perception probability and a Levy flight step length; a step of adding a crow misleading prevention factor into the model; and acquiring preset parameters in the PID controller model based on a particle swarm algorithm. The preset parameters comprise proportional (Kp), integral (Ki) and differential (Kd) parameters. Parameters of the Levy flight step length are dynamically adjusted through a Bayesian optimization algorithm. The method is suitable for being applied to PID parameter optimization work.

The invention relates to the technical field of fuel cells, and discloses a vehicle hybrid power system and an energy management method thereof, a medium and a vehicle, the vehicle hybrid power system is composed of a fuel cell and a power cell, the fuel cell and the power cell simultaneously generate electric energy to drive a motor, and the power cell plays a role in supplementing and recycling the electric energy. According to the method, the fuel cell works in a high-efficiency interval and a long-life interval as much as possible, multi-target optimization is performed on the efficiency and the life of the fuel cell based on a multi-target particle swarm optimization algorithm, and the fuel cell works at a high-efficiency and long-life comprehensive optimization working point.

The invention relates to an extended state type permanent magnet synchronous motor rotor position and speed estimation method. The invention relates to the technical field of motor control, and provides an extended state type counter electromotive force observer which takes alpha-beta axis current and alpha-beta axis total disturbance of a permanent magnet synchronous motor as system variables, alpha-beta axis actual current and action voltage as given values, and total disturbance of a system as observer output. And the back electromotive force of the permanent magnet synchronous motor is a main component for observing disturbance. The expansion state type phase-locked loop cancels a traditional PI regulator, the observed alpha-beta back electromotive force serves as phase-locked loop input, an observation angle error is obtained through calculation, and then the angle and speed of the motor are obtained and serve as output. In the angle compensation link, the phase difference between the observed counter electromotive force and the actual counter electromotive force is calculated according to the observer bandwidth and the motor rotating speed, a compensation angle is obtained through calculation, and accurate observation within the full-speed range is achieved.

The invention provides a direct-driven wind turbine subsynchronous oscillation suppression method based on an improved first-order LADRC, and relates to the technical field of direct-driven wind turbines. Establishing a mathematical model of a grid-side converter system and a direct-drive fan grid-side converter current inner loop control model based on improved first-order linear active disturbance rejection control; meanwhile, a phase lead link is introduced on the basis of the traditional LESO, so that the disturbance observation capability of the system is enhanced. Besides, a fuzzy controller is introduced to carry out on-line optimization on parameters of the improved LADRC controller, a fuzzy improved LADRC controller is formed and applied to a current inner ring of the grid-side converter, and accurate control over the current inner ring of the direct-drive fan grid-side converter is achieved. And SPWM (sinusoidal pulse width modulation) waves are obtained through output of the improved LADRC, and a main circuit of the grid-side converter is driven to work. The method aims at improving the robustness and the steady-state performance of a direct-driven wind turbine generator grid-connected system, and has good subsynchronous oscillation suppression capability.

The invention discloses a high-speed and high-precision phase locking method, which can accurately grasp the noise level, phase deviation and attenuation coefficient of a channel through quantum channel estimation, and provides important information for subsequent processing. Signal decomposition allows accurate representation of the signal on a quantum base, laying a foundation for noise suppression (S3) and signal reconstruction. And noise suppression utilizes a quantum mechanism, so that the efficiency and accuracy of signal processing are improved. Adaptive link establishment and time-sharing signal transmission aim at different transmission requirements, and the efficiency of communication link establishment and data transmission is optimized. And link monitoring ensures the stability and reliability of communication. On the whole, the method can improve the security, stability and efficiency of quantum communication, reduces the complexity of quantum signal processing, and provides powerful technical support for practicability and commercialization of quantum communication.

The invention relates to a hub motor driving and braking integrated system with a built-in speed reducer and a control method, and belongs to the technical field of electric vehicle braking, the system comprises a motor, a planetary gear speed reducer and a brake, the planetary gear speed reducer comprises a sun gear, a gear, a planet carrier plate and a planet shaft, the sun gear and the gear are integrally formed, the sun gear is of a hollow structure, the sun gear is connected to the motor through a spline, the planet shaft and a wheel bolt are arranged in a staggered mode, and the planet carrier plate is fixedly connected to a wheel bolt fixing plate. The technical problems that in the prior art, a hub motor with a built-in speed reducer is low in internal space utilization rate, poor in heat dissipation effect and large in noise due to insufficient structures and strategies are solved.

The invention discloses a droop control method for hybrid DC voltage of a DC power distribution network, relates to the DC power distribution network, and aims to solve the problems that a conventional DC voltage droop control strategy is not accurate enough in power distribution and large in static voltage deviation. The offset and the slope of a droop curve can be dynamically adjusted, namely, the voltage deviation value is corrected in real time, and power distribution is rapidly adjusted so as to adapt to the change of a system load. Through complementation of the two control strategies, the hybrid voltage control strategy not only can eliminate static errors, but also can quickly respond to power fluctuation, and can achieve more flexible DC voltage control. Moreover, a result after a 750V direct-current power distribution network simulation model is built on an MATLAB / Simulink platform for simulation shows that the precision of power distribution of the direct-current power distribution network can be effectively improved, the voltage deviation of a direct-current bus is remarkably reduced, and the dynamic response capability of the system is enhanced.

The invention discloses a variable-speed hydraulic synchronous driving system with non-equivalent flow division and a working method of the variable-speed hydraulic synchronous driving system, and belongs to the technical field of hydraulic synchronous driving. Comprising a measurement and control system, a servo oil source, a dynamic pressure feedback diverter valve and a driving unit, the servo oil source, the dynamic pressure feedback diverter valve and the driving unit are connected in sequence, the driving unit comprises a first driving branch and a second driving branch, a diverter detection unit comprises a flow compensation module, and the flow compensation module comprises a valve body; the pressure compensation unit comprises a first pressure compensation valve, a second pressure compensation valve and a shuttle valve, and the dynamic pressure feedback unit comprises a spring-mass module and a damping hole which are connected in series. Flow is distributed and loads are homogenized through the load-sensitive diverter valve, the flow difference, caused by time-varying unbalance loading, of the two branches is compensated through the dynamic pressure feedback device, high-precision synchronization of the two driving branches is achieved through the non-equivalent diverter principle, and meanwhile the efficiency of the synchronous driving system is improved through variable-rotating-speed servo oil supply.

The invention belongs to the technical field of magnetic suspension, and discloses an axial magnetic suspension bearing system modeling and controller design method based on different-element fractional order, which comprises the following steps of: 1, deducing a fractional order axial magnetic suspension rotor mathematical model which considers an eddy current effect and has four denominators through a Maxwell differential equation set; 2, designing a fractional order expansion state observer according to the mathematical model so as to obtain accurate state estimation and system disturbance; and step 3, designing a fractional order sliding mode controller based on the mathematical model of known disturbance. According to the method, the axial fractional order magnetic suspension bearing with four denominators is established by adopting a method based on Maxwell's equations, the adaptive capacity of a system to parameter change and uncertainty is enhanced by combining a fractional order sliding mode control strategy (FSMC) of a fractional order extended state observer (FESO), and it is ensured that the system can still work normally even under extreme working conditions. And the system can maintain good dynamic response and stability.

The invention provides an intelligent steer-by-wire vehicle robust stability control method which comprises the following steps: firstly, establishing a two-degree-of-freedom vehicle dynamics model, and solving a yaw velocity and a side slip angle of a vehicle under a steady-state working condition; then, a control target of vehicle stability control is further modified, and a reference model of robust controller design is established based on the two-degree-of-freedom vehicle dynamics model; and finally, designing and solving a steer-by-wire vehicle robust stability controller based on # imgabs0 # mixed sensitivity control for performing steer-by-wire vehicle robust stability control. According to the method, the robust stability and trajectory tracking performance of the intelligent steer-by-wire vehicle can be effectively improved.

The invention discloses an automatic balancing and attitude adjusting type underwater robot, relates to the field of underwater robot control, and aims to solve the problem that an underwater robot is difficult to give consideration to the functions of automatic buoyancy adjustment, attitude control and rapid floating at present. The device comprises a main machine body, a power unit, a control unit, a detection unit, a buoyancy regulation and control unit and a standby power supply, according to the technical scheme, the buoyancy regulation and control unit is regulated in real time through PID control on the basis of attitude data and depth gauge information, buoyancy autonomous balancing of the underwater robot under different loads is ensured, and the tedious balancing weight adjusting process in traditional manual balancing is avoided. During high-speed movement, the automatic balancing and attitude adjusting system can finely adjust the pitch angle and the roll angle of the underwater robot, stably maintain high-speed operation and cooperate with the propeller system to achieve better dynamic response. In addition, the system further has the function of quickly floating through the standby power supply and the buoyancy regulation and control unit under the out-of-control or power-off condition, and the safety of the robot is guaranteed.

The application discloses a data-driven optimal control method for a grid-connected inverter. The method comprises the following steps: constructing a DeePC optimization controller of the grid-connected inverter on the grid side; acquiring a data matrix of the grid-connected inverter in a preset historical period and an initial trajectory after a preset adjacent period, inputting the controller, setting parameters for different control targets and types of the grid-connected inverter, outputting an optimal input data sequence after processing, generating a sinusoidal pulse width modulation wave signal and acting on the grid-connected inverter, and realizing data-driven optimal control. The method can automatically perceive and adapt to the dynamic characteristics of the actual power grid through real-time data-driven predictive control, can present or enhance the control behavior of the grid-constructing or grid-following inverter by modifying the cost parameters, can realize multi-mode flexible, optimal and coordinated control, has excellent dynamic response and steady-state performance, is beneficial to safe and stable operation, and improves the ability to adapt to complex and variable operating conditions and power grid strength.

The invention discloses an automobile energy management control method, system and device and a storage medium. The method comprises the steps that the current rated demand power of a target vehicle and the preset upper limit loading power of a fuel cell in the target vehicle are obtained; comparing the current rated demand power with the preset upper limit loading power to obtain a comparison result; based on the comparison result, a target energy management strategy is determined to be matched from multiple preset energy management strategies, and the multiple preset energy management strategies comprise a power following strategy and a stepped strategy; and controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy. Based on the comparison result of the current rated demand power of the vehicle and the preset upper limit power of the fuel cell in the vehicle, the vehicle energy management strategy is dynamically adjusted, and the economy of the whole vehicle is improved while the service life of the fuel cell is protected.

This invention relates to the technical field of energy storage control in transportation, and provides a method and system for energy storage control in transportation. The method includes: acquiring real-time status information of an electric vehicle; when the real-time status information indicates a low-load operating state or a charging state, applying a current pulse to the battery cell and measuring the voltage response; calculating the internal resistance and available power based on the voltage response and storing it as a performance record; acquiring future operating plans and analyzing the charge and discharge load of the battery cell in future operating cycles based on the future operating plans; obtaining risk analysis results based on the performance record and charge and discharge load; setting personalized balancing targets for the battery cell based on the risk analysis results; and pre-allocating energy to the battery cell according to the personalized balancing targets when the real-time status information indicates a low-load operating state or a charging state. This invention improves the overall performance of energy storage control in transportation.

The invention relates to the field of ship energy control, in particular to an electric ship energy control method based on working condition recognition. The method comprises the following steps: acquiring planned route information, and analyzing historical working conditions of route segments one by one to obtain historical working condition characteristics; real-time working condition parameters in the ship navigation process are collected; positioning and matching a plurality of sub-legs according to the real-time working condition parameters, and constructing a sub-leg working condition feature set; working condition deviation comparison is carried out on the historical working condition features according to the sub-leg working condition feature set, and a deviation state sequence is determined; performing propulsion power gap calculation based on the deviation state sequence to obtain a power gap compensation value; battery capacity information is identified, current endurance state evaluation is carried out, and an endurance evaluation value is obtained; and carrying out endurance constraint correction on the power gap compensation value according to the endurance evaluation value to obtain a power constraint adjustment value. According to the invention, through real-time working condition identification and analysis, energy efficiency optimization, endurance safety and operation reliability are considered under complex navigation working conditions.

This application relates to the field of microgrid technology, and in particular to a current harmonic suppression method, an inverter, and a storage medium. The method includes: establishing the state equation of the grid-connected inverter based on the grid-connected inverter circuit and Kirchhoff's laws; establishing a transfer function from the disturbance voltage to the harmonic components of the grid-connected current based on the state equation; determining a calculation model for the modulation wave compensation term used to suppress the disturbance voltage based on the transfer function; extracting the harmonic components in the grid-connected current in real time, and obtaining the modulation wave compensation signal based on the calculation model of the harmonic components and the modulation wave compensation term; and superimposing the original modulation wave signal output by the current loop controller and the modulation wave compensation signal to obtain the final modulation wave signal. The method of this application can actively and accurately compensate for periodic voltage disturbances introduced by the switching of the power frequency bridge arm, thereby effectively suppressing the resulting current harmonics and zero-crossing distortion, and significantly reducing the THD of the grid-connected current.

The present invention discloses a motor sound generation method, a vehicle, a storage medium and a computer program product, and belongs to the field of vehicle technology. The method comprises: sampling audio data to obtain an audio sampling signal; determining a motor control signal according to the audio sampling signal; and controlling the motor according to the control signal, so that the motor itself can be controlled to generate a sound corresponding to the audio data, without setting up additional sound generation hardware equipment, which is conducive to reducing the production cost of the vehicle.

This invention relates to the field of data visualization and integration technology, specifically to a method and system for visually evaluating rehabilitation services. The method includes the following steps: acquiring and standardizing multi-dimensional indicator data; establishing a normalized matrix mapping parameter; and generating a set of visual evaluation charts for rehabilitation services. In this invention, by constructing a unified numbering set covering multi-dimensional indicators, effective organization and standardized management of data sources are achieved. Data fusion compatibility and accuracy are improved through field similarity comparison and unit conversion. Normalization calculations and grade grouping operations for values ​​such as service usage, resource allocation, job distribution, and fiscal expenditure ensure that various indicators are compared under a unified standard. Visual mapping of core parameters such as resource ratio, efficiency ratio, and coverage ratio is used. Interactive components and layer switching enhance the dynamic response and multi-view switching capabilities of the graphical interface, solving the problems of insufficient structure, single result presentation format, and lack of real-time performance in traditional evaluations.

The invention relates to an energy storage converter parallel operation method, system and device and a storage medium, and belongs to the technical field of energy storage converter parallel operation, and the method comprises the steps: collecting three-phase voltage and current data of an energy storage converter side and a power grid side; according to the collected voltage and current data, actual active power and actual reactive power are obtained through calculation; calculating an output voltage and an output frequency according to the actual active power and the actual reactive power; carrying out DQ conversion on the output voltage, and converting the output voltage into a voltage given value under a DQ coordinate; the virtual impedance of the output line is calculated according to the voltage given value, the calculated virtual impedance is superposed to the voltage given value, and the final voltage input quantity is obtained; carrying out double closed-loop control of a voltage and current loop on the given value of the input voltage to generate a modulation wave; and generating a PWM signal of the switching tube according to the generated modulation wave, and controlling the conduction of the switching tube by the PWM signal so as to control the output power of the energy storage converter.

This invention discloses a power regulation and coordinated control method for a heat pipe reactor-supercritical carbon dioxide nuclear power plant, comprising: determining that if the percentage deviation between the actual output power and the expected output power of the turbine compressor unit is less than a preset proportional value or proportional range and greater than zero, then using the working fluid flow control process of the turbine compressor unit as the primary regulation mode and the power control process of the heat pipe reactor as the secondary regulation mode; determining that the percentage deviation between the actual output power and the expected output power of the turbine compressor unit is greater than a preset proportional value or proportional range, then using the power control process of the heat pipe reactor as the primary regulation mode and the working fluid flow control process of the turbine compressor unit as the secondary regulation mode. This multi-objective control mode, which integrates primary and secondary controllers in a coordinated manner, helps ensure that the turbine compressor unit has a fast power response to external forces, while improving the energy conversion efficiency of the heat pipe reactor-supercritical carbon dioxide nuclear power plant, thus balancing the energy conversion efficiency and rapid mobility of the nuclear power plant.

The application relates to a hybrid brake coordination control method, device, equipment and medium of an unmanned vehicle. The method comprises the following steps: acquiring a desired deceleration of the vehicle, determining a maximum effective electric brake deceleration at a current vehicle speed; when an electric brake safety intervention condition is met, selecting a pure electric brake mode or a hybrid brake mode according to a comparison result of the desired deceleration and the maximum effective electric brake deceleration; when the hybrid brake mode is adopted and the vehicle speed is reduced to below an electric brake enabling speed threshold, performing hybrid brake exit control, and judging an exit opportunity based on a duration, an actual deceleration deviation and a hydraulic brake theoretical deceleration deviation. The method can improve the dynamic response, energy recovery rate, brake safety and reliability of the hybrid brake control.

The embodiment of the invention provides a suspension system and a vehicle. The suspension system comprises a base, a linear motor, an elastic piece and a magnetorheological damper, the base comprises a support and a lower supporting seat, one of the support and the lower supporting seat is suitable for being connected with a vehicle body, and the other one of the support and the lower supporting seat is suitable for being connected with a wheel; the linear motor comprises a stator and a rotor, one end of the rotor is connected to the support, and the end, away from the support, of the stator is connected to the lower supporting base. The elastic piece is arranged between the support and the stator and provides elastic force between the support and the stator; the magneto-rheological damper comprises an outer cylinder and a damper piston which is arranged in the outer cylinder and can move linearly relative to the outer cylinder, the magneto-rheological damper is arranged in the rotor, the outer cylinder is connected to the rotor, and the damper piston is suitable for being connected to the lower supporting base. According to the scheme, the energy consumption of the suspension system is reduced, the performance is improved, the safety redundancy is improved, and the cost is reduced.

The utility model discloses a three-way static and dynamic force simulation loading device of a horizontal machining center, which belongs to the technical field of machine tool performance testing, and comprises a cutter handle interface module, a connecting platform and three branch chains, the three branch chains are arranged at equal intervals in the circumferential direction of the connecting platform, and a mounting plate is connected between the three branch chains and the connecting platform. The three branch chains are of the same structure, each branch chain comprises a servo electric cylinder, a two-degree-of-freedom hinge, a first base and a second base, the end, close to the servo electric cylinder, of the two-degree-of-freedom hinge is rotationally connected with the first base, and the end, away from the servo electric cylinder, of the two-degree-of-freedom hinge is rotationally connected with the second base. According to the utility model, simulation loading of three-way force under the service condition of the horizontal machining center main shaft can be realized.

The present invention discloses a robot compliant grinding and polishing device, comprising a robot body, a compliant connection device and a grinding and polishing tool; wherein the compliant connection device has a magnetorheological damping unit and an electromagnetic variable stiffness unit. The compliant grinding and polishing device of the present invention not only has active and passive vibration suppression functions, but also has the function of electromagnetically driven stiffness adjustment; the compliant grinding and polishing device of the present invention adopts magnetorheological damping to suppress the vibration of the robot during the grinding and polishing process, has good dynamic response and large load-bearing capacity; at the same time, the stiffness of the compliant grinding and polishing device is regulated by current regulation, which can effectively adapt to the change of grinding and polishing load, effectively suppress the vibration during the grinding and polishing process and adapt to the change of grinding and polishing load through vibration suppression and stiffness adjustment, and realize the compliant grinding and polishing operation of the robot.

The invention discloses a posture adjustment control optimization method for an electric stand-up bed, which belongs to the technical field of PID control optimization. The specific steps are as follows: step one, constructing a posture adjustment control system for the electric stand-up bed; step two, improving a gazelle optimization algorithm; step three, using the improved gazelle optimization algorithm to perform parameter optimization on a speed outer-loop PID controller in the posture adjustment control system for the electric stand-up bed; step four, inputting three optimal parameters of the PID control obtained by optimizing the improved gazelle optimization algorithm into the speed outer-loop PID controller in the posture adjustment control system for the electric stand-up bed to optimize the posture adjustment control effect; the improved gazelle optimization algorithm is used to optimize the speed outer-loop PID controller of a regulating motor of the electric stand-up bed, thereby improving the dynamic response and control accuracy of the motor, and significantly improving the comfort and safety of the electric stand-up bed in the posture adjustment process.

The invention relates to a large-skewness, large-retreat-amount and high-bearing double-slit flap mechanism and an aircraft. The double-slit flap mechanism comprises a driving mechanism, a sub-flap and a main flap. The driving mechanism comprises a rack, a linear driving part, a first rocker arm, a second rocker arm, a first connecting rod, a second connecting rod and a third connecting rod; the rack is arranged on the outer side wall of the duct, the lower end of the first rocker arm is hinged to the rack, and the upper end of the first rocker arm is fixedly connected with the sub-flap; one end of the second connecting rod can slide relative to the rack, the middle of the second connecting rod is hinged to the middle of the first rocker arm, the other end of the second connecting rod is hinged to one end of the third connecting rod, and the other end of the third connecting rod is hinged to the first connecting rod. The double-slit flap mechanism can meet the requirements for large retreating amount, large deflection angle and high aerodynamic load bearing, and the aerodynamic lift augmentation effect of an aircraft in the vertical take-off and landing stage is improved.

The invention relates to a reference electrode, a lithium ion battery and a potential measurement method thereof, the reference electrode comprises a current collector layer and coating layers covering two sides of the current collector layer, and the coating layers are lithium foils; the current collector layer comprises a lithium storage region (1) and a measurement region (2) extending outwards from the lithium storage region (1); a lithium storage tab (4) is arranged on the lithium storage area (1), and a measuring tab (5) is arranged on the measuring area (2) deviating from the lithium storage area (1). Compared with the prior art, two sets of independent references are not used for calibration conversion, the same lithium foil is integrally formed and is divided into a lithium storage end and a measurement end, the lithium storage end and the measurement end are electrically communicated to form a single Li metal reference system, and the measurement end is directly placed in an ion channel between a positive electrode and a negative electrode to improve the authenticity and dynamic response of potential sampling. And the lithium storage end provides sufficient lithium source to maintain the interface stability and long service life of the measuring end.