116results about How to "Smooth change" patented technology

A hydroelectric generating set primary frequency modulation performance online evaluation method establishes a plurality of primary frequency modulation performance evaluation indexes, introduces an entropy weight method and an empowerment method, constructs a primary frequency modulation performance comprehensive evaluation system, and acquires and analyzes historical data and real-time data of a hydroelectric generating set. Real-time supervision and comprehensive evaluation of the primary frequency modulation performance of the hydroelectric generating set are realized, the problems of few evaluation angles, strong subjectivity, single data source and the like are effectively solved, weak links of the primary frequency modulation of the hydroelectric generating set can be found in time, the primary frequency modulation performance of the set is adjusted and optimized, the primary frequency modulation capability of the set is improved from management, and the efficiency is improved. A primary frequency modulation control system and system of a hydroelectric generating set are guided and helped to be perfected, so that random fluctuation of a power grid is quickly eliminated, the electric energy quality is improved, and safe, stable and economical operation of the set is guaranteed.

The invention discloses a control method of a photovoltaic panel installation robot grabbing system based on predictive control. The method is divided into two stages, namely an initialization stage and a prediction control stage, in the initialization stage, mechanical arm modeling is carried out according to DH parameters of a mechanical arm, and a parameter matrix is calculated through feature point information and depth information obtained by a camera to complete program initialization; in the predictive control stage, an MPC algorithm of time delay compensation is added, an optimal solution is solved, a predicted joint speed value is obtained, the speed value is issued to a mechanical arm controller, and the mechanical arm is controlled to move. The problems that time delay is caused by data acquisition and conversion, data transmission and data calculation, and mechanical arm joint accumulative errors are caused are solved, so that time delay errors caused by all parts of the system are reduced, and the control precision and stability of the system are improved.

The invention provides a drive circuit for a frequency converter load, and relates to the technical field of frequency converters. Comprising a control module, a driving module, a power supply module, a signal acquisition and processing module and a load matching module, and the load matching module has impedance matching, tuning matching and shaping filtering functions and has universal adaptive driving capability for most types of motors and ultrasonic transducers; the power supply module adopts a high-speed MOS tube, the driving module adopts a high-speed driving chip to adapt to the high-speed MOS tube, the frequency application range is large, the DDS waveform generation module is adopted to realize PWM wave output of different frequencies, the change step length of the frequency is extremely low, and the change is smooth; a variable step size algorithm and an LADRC algorithm are combined, and the working resonant frequency of the variable frequency load can be automatically and accurately locked within a certain frequency range. A linear LADRC algorithm is adopted, behaviors of a driving circuit are adjusted through real-time measurement and estimation, and the method can adapt to changes and uncertainty of a motor and an ultrasonic transducer in a complex working environment.

The invention belongs to the technical field of cable laying, and relates to a cable snakelike laying fixing device and laying method for a high-fall terrain. The cable fixing device comprises two corner pulley blocks, at least one vertical support is arranged between the two corner pulley blocks, the vertical support is connected with a cable clamp through an adjustable detachable connecting piece, and the cable clamp is used for fixing a cable on the vertical support. The vertical support serves as a supporting point for cable laying, and the cable can be stably fixed. In actual construction, the number of the vertical supports can be selected according to requirements. The adjustable detachable connecting piece enables the cable clamp to be flexibly adjusted according to laying requirements of a cable, and ensures that the cable is firmly clamped and cannot be damaged due to over-tightness or over-looseness. The direction of the cable can be flexibly adjusted through the corner pulley block, so that the cable is smoothly transited in a high-fall terrain, the snake width adjusting requirement can be met, stress concentration and abrasion caused by direct bending of the cable can be reduced, and safe operation of the cable is facilitated.

The invention discloses a self-adaptive efficient vibration screening device and a screening method, and relates to the technical field of material screening. Comprising a screening barrel, a transfer barrel is installed on the outer wall of the top of the screening barrel, and a processing mechanism used for feeding and conducting static electricity removing operation on ceramic particles is installed on the outer wall of the top of the transfer barrel. According to the ceramic material screening device, ceramic materials can be screened through the arranged screening mechanism, the screening hole diameter in the screening mechanism can be adjusted according to actual use requirements, and the screening hole diameter can be pre-adjusted according to thermal expansion and cold contraction volume changes of the ceramic materials in different temperature environments so that the ceramic material screening device can be suitable for screening operation with different screening hole diameter requirements; in the adjusting process, the air supply assembly is matched with the communicating assembly to supply air to or exhaust air from the annular air pipe, the air bag is expanded or contracted to adjust the screening hole diameter, the vibration frequency and the vibration amplitude of the vibration mechanism can be adjusted, the vibration frequency and the vibration amplitude can be optimized and adjusted according to use requirements, and therefore the screening cost is reduced.

The invention discloses a multi-channel symmetrical CLLC topological structure and a power balance control method thereof, and the structure comprises a multi-channel symmetrical CLLC converter main circuit loop, a high-precision sampling module, a phase shift angle controller module, an input capacitor, an output capacitor and an equivalent load. And more efficient electric energy conversion and power management control are realized. According to the power balance control method, phase shift control is carried out on a secondary side switching tube control signal of a power loop through a fundamental wave analysis method, a forward gain formula under the control method is derived, and output gain regulation and control are carried out on converters with power errors in the multi-path symmetrical CLLC converters. And thus, the power balance control among the multi-path symmetrical CLLC converters is realized.

The utility model relates to an angle-adjustable photovoltaic sound barrier device. The angle-adjustable photovoltaic sound barrier device comprises sound barrier equipment, a photovoltaic assembly, a first adjusting assembly, a second adjusting assembly and a damping adjuster. One end of the first adjusting assembly is connected with the sound barrier equipment, and the other end is rotationally connected with the photovoltaic assembly; the second adjusting assembly and the first adjusting assembly are arranged at an interval in the height direction of the photovoltaic assembly, and the second adjusting assembly comprises a second mounting piece and a sliding rod which are rotationally connected with each other; one end, deviating from the sliding rod, of the second mounting part is fixedly connected with the sound barrier equipment; the sliding rod is slidably connected with the photovoltaic module; one end of the damping regulator is connected with the sound barrier equipment, and the other end is connected with the slide bar. When the mounting angle of the photovoltaic module relative to the sound barrier equipment needs to be adjusted, the change of the mounting angle can be more stable through the damping effect of the damping adjuster; meanwhile, after the adjustment is completed, the installation stability of the photovoltaic module relative to the sound barrier equipment is relatively high through the supporting effect of the damping adjuster.

The invention provides a speed look-ahead method for a spindle of a rotary template sewing machine and related equipment, and the method comprises the following steps: determining a shortest sewing period, and determining a minimum rotation angle of continuous movement of a rotating shaft according to the period; the track curvature of each stitch is determined, for the stitch with the track curvature larger than the minimum rotation angle of continuous movement, the spindle limiting speed of the stitch is determined according to the rotation axis movement time corresponding to the stitch, and for the stitch with the track curvature not larger than the minimum rotation angle of continuous movement, the spindle limiting speed of the stitch is determined according to the shortest sewing period; determining the spindle limiting speed of the stitch; and based on the spindle limiting speed of each stitch, performing spindle speed look-ahead planning on each stitch through a backtracking method to obtain a spindle planning speed of each stitch. By applying the method provided by the invention, the speed of the main shaft can be forecasted by combining the constraints of feeding movement and rotation shaft movement, the planning speed of the main shaft which changes smoothly and meets the corresponding movement constraints can be obtained, and the sewing stability can be improved.

The utility model relates to the technical field of mixing devices, in particular to a sodium ion battery electrode raw material mixing device which comprises a stirring barrel, the top of the stirring barrel is fixedly connected with a supporting rod; the end part of the supporting rod is fixedly connected with a motor; the output end of the motor is fixedly connected with a first gear; the top of the stirring barrel is rotationally connected with a pipeline shaft; a second gear is fixedly connected close to the end part of the pipeline shaft; the second gear is meshed with the pipeline shaft; the top of the stirring barrel is fixedly connected with a base; a plurality of groups of stirring blades are fixedly connected to the middle part of the pipeline shaft; an exhaust pipe is fixedly connected to the bottom of the pipeline shaft; a plurality of groups of exhaust holes are formed in the middle of the exhaust pipe; an air outlet hole is formed in the top of the stirring barrel; by conveying hot air into the battery raw materials, the fluidity of the battery raw materials can be effectively improved, the raw materials with high viscosity or caking are effectively reduced, and the battery raw materials are effectively and uniformly mixed, so that the uniformity of the raw materials is improved.

The invention provides an acceleration control method and device in a parking stage, a storage medium and electronic equipment. The method comprises the following steps: acquiring a front acceleration, a vehicle speed and an obstacle distance corresponding to a current sampling time point; determining a planned speed and a planned distance based on the vehicle speed and the obstacle distance; determining an expected end acceleration; determining an expected average acceleration according to the planned speed, the planned distance, the front acceleration and the expected tail end acceleration; determining a planned jerk; determining Bezier curve data of the current sampling time point according to the expected average acceleration, the preposed acceleration, the planned jerk acceleration and the expected end acceleration, and determining a curve planned acceleration based on the Bezier curve data; and carrying out slope limiting processing on the curve planning acceleration, and taking a processing result as the current request acceleration. By applying the method provided by the invention, acceleration planning is realized based on the Bezier curve, so that acceleration change is smooth, and user experience is improved.

The utility model discloses a magnetism gathering type linear motor, comprising a stator comprising a stator yoke portion extending along the X-axis direction and a plurality of stator tooth portions arranged on the stator yoke portion at intervals along the X-axis direction; the mover is arranged opposite to the stator in the Y-axis direction, and the mover comprises a mover yoke part and an iron core monomer connected with the mover yoke part; each single iron core comprises an iron core end part and first permanent magnets and second permanent magnets which are arranged on the iron core end part, the magnetizing directions of the first permanent magnets and the second permanent magnets are not parallel, the first permanent magnets and the second permanent magnets are alternately arranged along the X-axis direction, the number of the first permanent magnets is N, the number of the second permanent magnets is N-1, and N is greater than or equal to 2; the stator tooth part comprises a stator top wall adjacent to the iron core single body and two first stator side walls connected to the two sides of the stator top wall in the X-axis direction, and a chamfer structure is formed between the stator top wall and the first stator side walls. By adopting the structure, the magnetic gathering effect is obvious, and the cogging force of the motor is effectively reduced.

The invention relates to the technical field of robot autonomous following, in particular to a robot autonomous following method based on a single-line laser radar. Comprising the steps of collecting laser radar data, performing intelligent processing on the laser radar data to obtain accurate laser radar data, identifying contour features of a following target by using a simultaneous positioning and mapping technology, forming a reference point of the following target, and constructing a map; the constructed map is updated and optimized, and an optimized map is obtained; based on the optimized map and the accurate laser radar data, performing dynamic target tracking optimization and target motion prediction by using a dynamic adaptive path planning and target tracking algorithm to obtain a preliminary dynamic path plan; and based on the initial dynamic path planning, introducing a priority-based task scheduling mechanism to obtain the optimal path planning. The technical problems of low environmental adaptability and low tracing accuracy in the autonomous tracing implementation process of the robot in a closed environment are solved.

The invention relates to the field of gas detection, and discloses an electronic nose device with double gas inlet channels and a gas detection method. A filter, a double-cavity air inlet shell with a front-narrow rear-wide structure and a sensor annular placing hole, an air flow guide structure, a sensor array and an air exhaust shell are manufactured in a 3D printing mode; the sensor array is fixedly connected with the gas flow guide structure; the outer wall of the gas guide device is in contact with the inner wall of the gas inlet shell and is fixed in a magnetic attraction manner; the air exhaust shell is connected with an air pump through a rubber tube; the gas inlet shell and the gas exhaust shell are spliced together in a stepped mode, the purpose of detaching and replacing the sensors can be achieved, and through unique sensor combination and an advanced data processing algorithm, the components and concentration of target gas can be rapidly recognized and quantitatively analyzed. According to the invention, the contact time of the gas and the sensor is prolonged while rapid suction of the gas is guaranteed, and efficient and accurate detection of various different types of gas is realized.

The invention provides a lightweight human shape detection method and device based on improved RTDETR, a medium and a product, and the method comprises the steps: obtaining a data set for human shape detection, and dividing the data set into a training set, a verification set and a test set; an improved RTDETR model is constructed, an ES Block is used in the improved RTDETR model to replace a Basic Block in the RTDETR feature extraction network before improvement, and the ES Block comprises an OfficientVIT Block and a SimAM attention module which are connected in sequence; the NWD Loss is used as a loss function of the improved RTDETR model; training the improved RTDETR model by using a training set, verifying the improved RTDETR model by using a verification set and testing the improved RTDETR model by using a test set to obtain a trained improved RTDETR model; and inputting the to-be-detected image into the trained improved RTDETR model for reasoning to obtain a human shape detection result of the to-be-detected image. By means of the technical scheme, the human shape detection precision and small target human shape detection in a security and protection monitoring complex scene can be improved.

The application belongs to the technical field of combustion engines, and provides a large-size side exhaust pipe of a turboshaft engine, which comprises: a pipe body having an inlet end and an outlet end; an outlet reinforcing structure arranged at the outlet end region of the pipe body; a support structure arranged inside the pipe body; an anti-abrasion connecting structure arranged at the inlet end of the pipe body; and an internal flow passage of the pipe body is configured to guide the gas input from the inlet end to be discharged laterally at the outlet end, the internal flow passage of the pipe body has a preset expansion cone angle θ2, the flow passage center line of the pipe body is a three-dimensional space curve constructed based on a non-uniform rational B-spline curve, and the ratio of the outer diameter size of the inlet end to the center transverse distance between the inlet end and the outlet end satisfies a preset condition. The core aerodynamic problem of "complex internal flow field organization of a large-size side exhaust pipe, non-uniform outlet flow field and small effective aerodynamic area" in the prior art is solved, and the limit performance of the exhaust pipe is excavated without affecting the performance of the engine.

The utility model discloses a production line protective outer cover, which belongs to the field of production lines, solves the problems that the overall structure of the existing protective outer cover is fixed and the overall length cannot be flexibly changed, and comprises a protective shell, a movable plate, a movable frame and an observation window, the movable plate is arranged in the protective shell in a sliding manner, and the movable frame is fixedly arranged at the end part of the movable plate; observation windows are symmetrically arranged on the two sides of the protective shell, and adjusting mechanisms are symmetrically and fixedly installed on the surface of the protective shell. In the protective shell, by arranging the adjusting mechanisms and the combined mechanism, the overall length of the protective shell can be rapidly and stably adjusted and changed, and a production line can be conveniently and comprehensively wrapped by the protective shell; the practical effect of the protective shell is improved, the middle end moving plate can be rapidly replaced when the protective shell is used, other parts can still be normally used, equipment maintenance resources are saved, and the overall working efficiency is improved.

The invention discloses a brake pedal assembly, a control method, a vehicle-mounted controller and a control system. The brake pedal assembly comprises a brake pedal, a push rod, a push rod motor, a spring simulator and a hydraulic adjusting mechanism, the first end of the spring simulator is connected with the first end of the hydraulic adjusting mechanism, and the second end of the spring simulator is connected with the second end of the hydraulic adjusting mechanism through the push rod; the push rod motor is arranged on the push rod, and the push rod is connected with the brake pedal. By means of the hydraulic adjusting device, the problem that the abrupt feeling is too high in brake pedal position adjusting and pedal feeling adjusting is solved.

The utility model is suitable for the technical field of belt tensioning wheel and provides a variable resistance belt tensioning wheel, which comprises a mounting seat, a tensioning assembly is arranged on the mounting seat, a tensioning arm is arranged on the tensioning assembly, the setting of the tensioning assembly, the synchronous movement of the tension spring and the tensioning arm ensure that the tensioning wheel is always in contact with the belt, the tension of the belt is maintained moderate, the probability of belt loosening is reduced, the stability of the transmission system is improved, the stretching and compression of the tension spring are controlled by fluid damping effect, the change of the tension spring is more stable, the rapid adjustment of the tensioning wheel is avoided, the design improves the accuracy and reliability, the width of the fluid path of the drainage valve is adjusted by rotating the speed regulating handle, the fluid resistance is adjusted, and thus the damping is adjusted according to the specific requirements of the transmission system, and the performance is optimized; the setting of the reverse locking assembly realizes the reverse locking limitation of the tensioning wheel, and further improves the safety of the transmission system.

The present application belongs to the technical field of Internet of Vehicles and communication security, and discloses a federated learning training method based on vehicle state perception and applicable to dynamic Internet of Vehicles. The method collects vehicle running state information of vehicle clients, preliminarily screens candidate vehicle clients, calculates comprehensive scores of the screened vehicle clients, adopts a client selection strategy combining selection of the top-ranked clients with random supplementation to determine a set of vehicle clients participating in the current round of federated learning, configures local training parameters for the selected vehicle clients according to vehicle speed and computing capacity, performs local training on local data sets to obtain model updates, performs weighted aggregation on the model updates of the effective participating vehicle clients at the server end, introduces a momentum mechanism to smooth the model update process, and obtains new global model parameters. This method effectively improves the stability, robustness and training efficiency of federated learning in a high-dynamic Internet of Vehicles environment.

The application relates to an aerodynamic profile suitable for a wind tunnel and a design method thereof, and belongs to the technical field of aviation aerodynamic wind tunnel tests. The front end surface of the aerodynamic profile is a square section, the rear end surface of the aerodynamic profile is a circular section, the middle part of the aerodynamic profile is a transition section, and the front and rear sections are connected through the change of the section shape from front to back. The research and development purpose is to provide a novel aerodynamic profile design method for the transition from a square section to a circular section, the flow field can be smoothly transitioned from a square to a circle, the influence on the flow field quality is minimized, the pressure loss is reduced, and the method of rounding the right angle and gradually increasing the rounding radius is adopted to realize the smooth transition from the square section to the circular section. The circular arc curve is gradually lengthened, the right angle side is gradually shortened, and finally the profile line is completely changed into a circular shape. The transition mode is natural and smooth, the change is gentle, the aerodynamic performance is good, and the interference on the flow field due to the change of the section shape can be obviously reduced.

The present invention provides an ultrasonic assisted processing chamber and a refrigerator. The ultrasonic assisted processing chamber is provided with a tray assembly and at least one ultrasonic generator, the tray assembly has a top plate and a bottom plate, a partition cavity is defined between the top plate and the bottom plate, the partition cavity is filled with a partition medium, and the partition medium is used to buffer the freezing rate of food; the top plate is concave downward to form at least one concave portion for carrying food, the distance between the lower bottom surface of the concave portion and the upper surface of the corresponding area of ​​the bottom plate is 0 to 50 mm, and the medium surface of the partition medium at least exceeds the bottom end of the concave portion; the ultrasonic generator is fixed to the lower bottom surface of the bottom plate, and is configured to generate ultrasonic waves in a controlled manner, so that at least a part of the ultrasonic waves is applied to the food through the partition medium. The advantage of the present invention is that it can significantly improve the freezing quality and pickling quality of food.

The invention provides a method and device for controlling a vehicle, the vehicle and a storage medium, and the method comprises the steps that under the condition that it is determined that the vehicle is in a starting stage, the starting acceleration range of the vehicle is obtained; wherein the starting acceleration range is the acceleration range in which the user comfort degree is greater than the preset comfort degree when the vehicle is started; a hydraulic braking system of the vehicle is controlled to actively build pressure to the target pressure; based on the starting acceleration range and the current output torque of the vehicle, the pressure adjusting amount is determined; and the target pressure of the hydraulic braking system is adjusted based on the pressure adjusting amount, so that the vehicle is started based on the acceleration within the starting acceleration range. According to the method, the stability of the vehicle in the starting stage can be improved by limiting the acceleration of the vehicle in the starting stage, and then the driving comfort of the vehicle is improved.

The embodiment of the invention discloses a vehicle door closing state determination method, a vehicle and a product, and relates to the technical field of vehicle control, the method comprises the following steps: in response to a triggering operation on a vehicle door closing event, acquiring a sound signal associated with the vehicle door closing event and a state parameter influencing vehicle environment noise; wherein the state parameters comprise at least one of vehicle working condition parameters and environment parameters which influence vehicle environment noise; extracting sound features of the sound signals; performing feature analysis on the sound features based on the state parameters, and obtaining the closing state of the vehicle door based on an analysis result; wherein the closed state comprises an unclosed state, a fully closed state and an unclosed state. According to the technical scheme provided by the embodiment of the invention, no extra hardware sensor is needed, so that the hardware cost and the structural complexity are effectively reduced; meanwhile, the interference of different vehicle working conditions and environmental factors on the sound signals can be effectively eliminated, and the accuracy and reliability of vehicle door closing state judgment are improved.

The invention provides a cloud game instruction processing method and device, electronic equipment and a storage medium, and relates to the technical field of computers. The method comprises the following steps: acquiring a picture offset instruction for a current game picture; splitting the picture offset instruction to obtain a plurality of sub offset instructions; sending the plurality of sub-offset instructions to a cloud server in sequence, so that the cloud server performs rendering updating on the current game picture according to the plurality of sub-offset instructions to obtain a plurality of picture rendering data; sequentially receiving the multiple pieces of picture rendering data returned by the cloud server; according to the multiple pieces of picture rendering data, game pictures are displayed in sequence. According to the method, game picture jamming caused by network jitter can be reduced, and the picture smoothness is improved.

The utility model discloses an axial flow fan outlet airflow large corner drag reduction device, which relates to the technical field of axial flow fans, and comprises a flow guide cover, a flow guide ring and a flow dividing ring, the flow guide cover is used for being fixed in an air cap and covered above a casing, the flow guide cover is of a structure with a concave middle part, the outer edge of the flow guide cover is attached to the inner wall of the air cap, and the flow dividing ring is arranged on the flow guide cover. A flow guide channel for air flow in a main flow area of the fan outlet to flow out is formed among the flow guide cover, the air cap and the upper edge of the machine shell; the flow guide ring is used for being fixed to the upper edge of a machine shell, the outer wall of the flow guide ring is attached to the inner wall of the upper edge of the machine shell, the section of the flow guide ring is in a streamline shape with the round upper portion and the sharp lower portion, and the flow dividing ring is used for being fixed to the upper portion of the flow guide ring. A flow dividing channel allowing airflow of a near-wall-face area of the fan outlet to flow out is formed between the flow dividing ring and the flow guiding ring. The utility model further discloses an axial flow fan system which comprises the axial flow fan, an air cap and the axial flow fan outlet airflow large-rotation-angle resistance reduction device.

Provided is a valve capable of smoothly changing the pressure of a back pressure fluid. A valve (V1) is provided with: a housing (60) having a high-pressure space (S2) into which a high-pressure fluid (Pd) flows, back-pressure spaces (S3, S3 ') into which a back-pressure fluid (Pb) flows, and a low-pressure space (S1) into which a low-pressure fluid (Ps) flows; and a valve body (61) disposed in the housing (60) so as to be capable of relative movement. The housing (60) has a first passage (73) provided between the high-pressure space (S2) and the back-pressure space (S3) and a second passage (78) provided between the back-pressure space (S3 ') and the low-pressure space (S1), and the valve body (61) has a first valve body part (72) for controlling the opening degree of the first passage (73) and a second valve body part (77) for controlling the opening degree of the second passage (78). The first valve body part (72) and the second valve body part (77) are linked in such a manner that the respective movement directions are opposite in the opening direction and the closing direction.

A multi-blade centrifugal blower is provided with: a fan having a main plate, a plurality of blades, and an annular side plate for fixing the ends of the plurality of blades on the opposite side from the main plate; and a volute having a peripheral wall formed in a scroll shape and at least one side wall having a bell mouth forming a suction port, the volute housing accommodating the fan, the fan having: a rearward blade portion constituting a rearward blade at a portion on the inner peripheral side of each of the plurality of blades; a forward vane part that constitutes a forward vane in a portion on the outer peripheral side of each of the plurality of vanes; and an inflection point portion forming an inflection point between the rearward blade portion and the forward blade portion, the inflection point portion being formed throughout the entire length of the blade, which is a portion between the base end portion on the main plate side and the tip end portion on the side plate side of each of the plurality of blades. All parts of the inflection point part in the axial direction are formed to be closer to the inner circumferential side than the inner circumferential end part of the inner edge forming the horn mouth in the radial direction of the fan.

The invention provides a vehicle-mounted high-voltage PTC control circuit. The vehicle-mounted high-voltage PTC control circuit comprises a switching tube Q, an inductor L, a diode D and a capacitor C, the first end of the switching tube Q is connected with an input power supply; one end of the inductor L is connected with the second end of the switching tube Q, and the other end of the inductor L is used for connecting one end of the vehicle-mounted high-voltage PTC and one end of the capacitor C; the negative electrode of the diode D is connected with the second end of the switching tube Q and one end of the inductor L. The positive electrode of the diode D is connected with the grounding end, the other end of the capacitor C and the other end of the vehicle-mounted high-voltage PTC. The PTC is controlled by the control circuit, stable voltage can be effectively output, the change rate of voltage and current is more controllable, after the voltage is stabilized by the control circuit, the change of the voltage and the current becomes smooth, and generation of electromagnetic radiation is effectively reduced. After the voltage is stabilized, the current in the grounding loop is more stable, and the stable grounding current can reduce the generation of noise voltage, thereby reducing the influence of electromagnetic radiation on the system.

The invention discloses a method and device for producing industrial ammonium nitrate and porous ammonium nitrate, belongs to the field of chemical treatment, solves the problem that an existing chemical production device cannot process different materials, and comprises a pretreatment assembly, a granulation part, a screening mechanism and an evaporation assembly, the pretreatment assembly is used for collecting and conveying an industrial ammonium nitrate solution and a porous ammonium nitrate solution, the industrial ammonium nitrate and the porous sodium nitrate can be efficiently and stably processed by arranging the pretreatment assembly, the granulation piece, the screening mechanism and the evaporation assembly, processing of the two solutions can be stably switched and changed, and the processing efficiency is improved. When two solutions are processed, all parts in the device need to be cleaned in advance, the situation that the two solutions pollute each other during processing is prevented, and therefore the stability of the whole device during operation is guaranteed, the processing cost during processing of the two solutions is reduced, and the working quality of the device is improved.

The invention provides a charging method and device based on real-time feedback control and a charger, and the method comprises the steps: building communication connection with power supply equipment and to-be-charged equipment based on a protocol, and collecting the target electric state quantity of the to-be-charged equipment; extracting state data of to-be-charged equipment and state data of power supply equipment, constructing a charging prediction control model, and constructing a feedback regulation model according to the charging prediction control model; performing iterative optimization on the charging prediction control model and the feedback adjustment model to generate a charging strategy model; and obtaining a charging strategy based on the charging strategy model, and charging the to-be-charged equipment to the target power state quantity based on the charging strategy, so that the effect of balance adjustment of the power supply equipment and the power output quantity of the power supply equipment is realized, the effect of smooth increase of the power change curve of the to-be-charged equipment is achieved, and the stable increase of the power change is realized. Therefore, over-high voltage fluctuation in the battery is avoided, and the minimum loss of the battery is realized on the premise of ensuring the charging efficiency.