37results about How to "Weakening range" patented technology

An electric power assisted steering assembly comprises a steering mechanism which operatively connects a steering wheel to the roadwheels of a vehicle, a torque sensing means adapted to produce a first output signal indicative of the torque carried by a portion of the steering mechanism, a means for producing a second output signal indicative from a signal indicative of the angular velocity of the portion of the steering mechanism, an electric motor operatively connected to the steering mechanism, a signal processing unit adapted to receive the two output signals and to produce therefrom an overall torque demand signal representative of a torque to be applied to the steering mechanism by the motor, and a motor drive stage adapted to provide a drive current to the motor responsive to the torque demand signal. The overall torque demand signal includes a damping component that is dependent upon the second output signal. The means for producing the yaw damping component includes a filter having one pole and one zero, and in use the second signal is passed through the filter to produce the damping component, the frequency of the pole and zero being selected such that the filter provides a band between the pole and zero within which the phase of the filtered second signal and the velocity signal are further out of phase or in phase than within the band.

The application relates to the technical field of chip design, in particular to an AI-based DDR5 memory interface chip adaptive method and system.The method comprises the following steps: obtaining a configuration instruction stream, extracting current and historical configuration instructions, and predicting target pins, switching time and target modes.Before the switching time, target electrical parameters are calculated according to pin electrical characteristics, historical switching records and channel load characteristics.During the switching, the target parameters are loaded and the temporary impedance matching network is switched in.After the switching, a fine-tuning increment is generated according to the deviation of the signal quality and the threshold value, and the updated electrical parameters are obtained by superposition, and the matching network is disconnected after the updated electrical parameters are written back to the register.According to the timing error and the fine-tuning increment generated by multiple switching, the weight parameters are updated and deployed back to the chip.Through AI prediction and the dynamic switching and fine-tuning of the temporary impedance matching network, seamless, stable and low-delay mode switching of the memory interface chip in the reconfigurable computing system is realized.

This invention relates to the field of vehicles, providing a housing structure, a rear bumper assembly, a vehicle body, and a vehicle. The housing structure includes a housing body with a receiving groove for accommodating a pressure relief valve on a rear side panel. The housing body can be positioned on the outside of the rear side panel of the vehicle, and an exhaust passage communicating with the pressure relief valve is formed between the receiving groove and the rear side panel. The exhaust passage has an exhaust port facing the rear end of the vehicle. When the vehicle is in motion, the airflow outside the vehicle bypasses the housing body and flows towards the rear end of the vehicle. Since the exhaust port of the exhaust passage faces the rear end of the vehicle, the airflow outside the exhaust passage passing through the exhaust port causes minimal pressure changes within the exhaust passage, resulting in minimal pressure differential fluctuations between the exhaust passage and the inner side of the rear side panel. This effectively reduces the frequency and amplitude of the pressure relief valve's flapping action, thereby reducing low-frequency noise generated by pressure differential fluctuations in the acoustic cavity and ensuring passenger comfort.

This utility model discloses a receiver-type automotive fuel level sensor, including an electrical box, a signal output line, and a flange. A probe rod is installed at the bottom of the electrical box, and the flange is installed on the outside of the probe rod. A monitoring and control mechanism is provided inside the probe rod, and a gauging groove is provided inside the probe rod. A float is slidably connected to the inner wall of the gauging groove. The probe rod has an oil inlet and an exhaust port. The gauging groove is connected to the external space through the oil inlet and the exhaust port. The monitoring and control mechanism includes a combined sensor, a PLC control unit, and a telescopic rod. By dynamically adjusting the opening of the exhaust port through the telescopic rod, large fluctuations in the fuel level in the gauging groove are suppressed, and the pressure in the internal space of the gauging groove above the float is increased, making the float more stable, reducing the frequency and amplitude of shaking, and reducing the displacement signal fluctuation caused by the inertia of the float, so that the fuel level signal transmitted to the instrument is more stable.

The application discloses a kind of building energy consumption regulation and control optimization method, system, terminal and medium, it is related to energy consumption regulation and control technical field, its technical scheme main point is: obtaining the output fluctuation data of generator set and the power load fluctuation data of target building;Determine the upper limit value and lower limit value of power load of target building at corresponding target time;Determine the dispatching optimization interval of target building at corresponding time;With the sum of all target buildings control optimization value minimum as optimization goal to establish control optimization model;Solving obtains the energy consumption regulation and control strategy of each target building.The application uses power load control, both considers the fluctuation trend brought by the randomness and uncertainty of new energy in power system in generation side, also considers the demand change trend of each building in power consumption side, can realize the balanced distribution of each building energy consumption under the demand intensity of each building with small error.

This invention belongs to the field of integrated circuit equipment technology and discloses a high-damping vibration-damping base for integrated circuits, including a lower base. The integrated circuit equipment is placed inside the upper base and is centered and clamped by four first flexible square rings in the clamping assembly. When the integrated circuit equipment is used and subjected to vibration during operation, the upper base vibrates. The force on the upper base is transmitted to the second block, the second spherical rod, the elastic damper, the first spherical rod, and the first block, causing the elastic damper to extend and retract, thus mitigating the impact force generated during vibration. Since the multiple second spherical rods and the first spherical rods can move in a circular motion around the second block and the first block, when the integrated circuit equipment vibrates irregularly, the impact force generated in multiple directions of movement of the integrated circuit equipment can be mitigated, reducing the vibration frequency of the upper base relative to the lower base.

The invention discloses a clamp and a machine tool, and relates to the technical field of clamps. The clamp comprises a supporting assembly and a tensioning assembly, a supporting part of the supporting assembly is used for supporting a workpiece, and a tensioning part of the tensioning assembly protrudes out of the supporting part and penetrates through a center hole of the workpiece. Due to the fact that the multiple protruding parts are arranged on the side wall of the tensioning part and the concave parts are formed among the multiple protruding parts, when the workpiece needs to be clamped, the tensioning part drives the protruding parts to move in the direction away from the central axis of the tensioning part, the protruding parts can abut against the first hole section of the central hole, and the position of the workpiece in the radial direction can be effectively limited. And the concave part and the second hole section of the center hole are arranged at an interval, so that the concave part cannot transmit the pressure generated by the tensioning part to the workpiece, the protruding amplitude of the outer wall of the workpiece can be reduced, and the machining precision of the workpiece is improved.

The invention is a kind of wind farm droop control frequency modulation method with pitch angle protection function, wind farm control center receives the load shedding mode and adjustable power of wind turbine; the wind turbine is divided into two groups by whether to use pitch angle load shedding, and the total frequency modulation power of the wind farm and the two groups is calculated according to the calculation; the control center determines the total droop coefficient of the wind farm according to the total adjustable power of the wind farm; the total droop coefficient of the two groups is determined according to the adjustable power of the two groups, and the relationship between the frequency modulation participation rate ρ and σ and the maximum adjustable frequency modulation power of G1, G2 and the maximum adjustable frequency modulation power of the wind farm is calculated; the droop coefficient of the wind turbine is determined according to the adjustable power of the wind turbine, and it is sent to each wind turbine; finally, the wind turbine adjusts the droop coefficient in real time according to the received information, and completes the frequency modulation work. The invention preferentially makes the wind turbine without pitch angle load shedding to perform frequency modulation, reduces the pitch angle action amplitude and frequency of the wind turbine with pitch angle load shedding, protects the mechanical device of the wind turbine, and prolongs the service life of the wind turbine.

The application discloses a diver handheld navigation sonar cross-modal navigation method and system, and relates to the technical field of underwater navigation. It aims to solve the problems of low navigation recognition, high power consumption and cross-modal fusion deviation in low visibility environment. The application includes synchronously collecting underwater acoustic, visual and positioning data; correcting the physical field of acoustic and visual data based on a fluid dynamics model and an electromagnetic wave propagation model; extracting geometric and texture features from the corrected data, while detecting acoustic anomalies and visual anomalies, and comprehensively outputting obstacle information; matching the extracted features with a pre-stored feature library for similarity, and outputting fusion features; generating a basic path based on the fusion features through a dynamic weight cost function, correcting the generated final path using positioning data, and planning a detour route; and superimposing and displaying the path, the detour route and the obstacle information, and giving a warning when the distance of the obstacle is less than a safety threshold. The technical scheme significantly improves the navigation recognition and reduces the power consumption in low visibility.

The utility model provides an adjustable air window for a coal mine, which belongs to the technical field of mine ventilation and comprises a frame body and a plurality of louvre blades, the louvre blades are respectively and uniformly arranged in a hollow cavity of the frame body through a rotating shaft, one end of the rotating shaft is provided with an adjusting gear, and the adjusting gear is meshed with an adjusting rack. The adjusting rack is connected with a sliding mechanism, a servo motor is arranged on one side of the frame body, the output end of the servo motor is connected with a transmission mechanism, and the transmission mechanism is connected with a rotating shaft. The transmission mechanism comprises a plum coupling, a corner device, a pin coupling and a speed reducer, the output end of the servo motor is connected with the speed reducer, the speed reducer is connected with the corner device through the pin coupling, and the corner device is connected with one end of the rotating shaft through the plum coupling. Through the design of the transmission mechanism and the sliding mechanism, the transmission efficiency can be effectively improved, accurate adjustment of the ventilation quantity is achieved, and safety, reliability, high efficiency and energy conservation are achieved.

The invention relates to horizontal cleaning equipment, and belongs to the technical field of cleaning devices. In order to solve the problems that an existing cleaning mode is small in cleaning strength, large in water consumption and prone to causing abrasion of a cleaned surface, the horizontal cleaning equipment comprises a cleaning system and a sewage recycling system used in cooperation with the cleaning system, the sewage recycling system comprises at least one water shovel, the water shovel is fixed to a rotating mechanism, and the rotating mechanism is fixed to the cleaning system. A sewage collecting tank is arranged in the middle of the rotating mechanism, the sewage collecting tank is a cavity with an upper opening, and the rotating mechanism is connected with the cleaning equipment main supporting structure through a bearing. According to the cleaning equipment, a compact and integrated cleaning process of flushing, brushing, purging, drying and sewage recycling, filtering and recycling is formed, and the beneficial effects of high standard, high efficiency, water saving and the like are achieved.

The present invention relates to the technical field of reflux tanks, and discloses an ethylene carbonate product refining tower top reflux tank, which comprises a tank body, the top of the tank body is provided with a cooling mechanism, the cooling mechanism comprises a connection assembly and a condenser, and the connection assembly comprises a connection pipeline and a water passing pipeline which are fixedly connected, a quantity control assembly and a driving assembly are arranged in the connecting pipeline, the quantity control assembly comprises a liquid filtering plate and an anastomosis plate, and the driving assembly can adjust an anastomosis area between the anastomosis plate and the liquid filtering plate; meanwhile, the discharge amount of the liquid and the vibration frequency of the filter screen can be adjusted according to the purity of the liquid ethylene carbonate, the reflux process of the ethylene carbonate is reasonably adjusted, and the applicability is further improved.

The invention discloses a method for improving the reliability of a phase delay film and the phase delay film, and belongs to the technical field of optics. According to the invention, the sulfur-sulfur alkyl chain-containing compound is adopted to perform molecular modification on the phase delay film, so that the adsorption and invasion rate of the phase delay film to water molecules can be reduced, and polymer swelling, plasticizing and hydrolysis effects caused by water vapor can be reduced; thermal motion of a polymer molecular chain in a high-humidity and high-temperature environment is inhibited, internal stress release and microstructure change are reduced, and then the problems of phase delay value drift, haze rising and surface physical degradation of the phase delay film in the high-humidity and high-temperature environment are solved; and the optical stability and the mechanical stability of the phase delay film in a high-humidity and high-temperature environment are improved.

The invention discloses an air conditioner pre-cooling regulation and control method and device based on comfort and cost and a medium, and relates to the technical field of building energy conservation and intelligent control. According to the method, building parameters, hourly meteorological data and power failure time periods of a target building are obtained, and a building energy consumption and indoor thermal environment simulation model of the target building is built; the pre-cooling set temperature and the pre-cooling starting time serve as decision variables, and an objective function used for minimizing the thermal discomfort degree in the power failure period and the daily operation cost of the air conditioner is constructed; inputting hourly meteorological data into the simulation model, carrying out iterative optimization on a target function by utilizing an optimization algorithm, and solving to obtain a target air conditioner pre-cooling strategy; and according to the pre-cooling starting time and the pre-cooling set temperature in the target air conditioner pre-cooling strategy, an air conditioner system of the target building is controlled to execute pre-cooling operation. By optimizing the pre-cooling strategy, the optimal balance between the comfort and the energy consumption cost is achieved, the indoor temperature rise in the power failure period is effectively delayed, and the thermal comfort of personnel is remarkably improved.

The application provides a sewage aeration intelligent adaptive control method and system, which is applied to the intelligent control field of activated sludge method sewage treatment; the method comprises the following steps: collecting water quality parameters of influent water through a sensor array and identifying abnormal fluctuations by using a support vector machine, combining a neural network to compare historical patterns to calculate the probability of sudden increase of pollutant concentration, calculating a response delay index based on the influent flow and biochemical kinetics parameters when the threshold is exceeded, and generating an oxygen injection sequence to regulate the aeration equipment, and simultaneously performing closed-loop feedback adjustment according to real-time dissolved oxygen data; through the above scheme, the application can predict pollution impact in advance and compensate for system lag, realize accurate matching of oxygen supply and load in time sequence, effectively improve the water quality stability of effluent and reduce energy consumption.

The application discloses a kind of steel wire rope chuck punch riveting automatic mistake-proofing device and punch riveting machine, method for using, including proximity switch, positioning block, support, bending rod, shaft moving piece, the upper portion of the positioning block is equipped with assembly hole, the shaft moving piece is slidably installed in the assembly hole;The left side of the upper portion of the positioning block is also equipped with the support corresponding with the position of assembly hole, the left side of the support is equipped with limit plate;A certain length of accommodating space is formed between the limit plate and the positioning block, and the accommodating space is communicated with the assembly hole;The bending portion of the bending rod is rotatably installed in the upper portion of support, and the end of its shorter length extends into the accommodating space between the limit plate and the positioning block, and abuts against the shaft moving piece, and the other end of its longer length extends in the direction away from the support, and extends below the proximity switch.The application has the advantages of simple structure, accurate riveting, etc.

The aluminum-plastic film comprises a heat sealing layer with an anti-blocking agent embedded in the surface, the anti-blocking agent comprises composite microspheres, the composite microspheres are mesoporous inorganic microspheres internally loaded with water-absorbing expansion particles, the thickness of the heat sealing layer is T heat sealing, the average particle size of the water-absorbing expansion particles is D particles, and the average particle size of the water-absorbing expansion particles is T particles. The average particle size of the mesoporous inorganic microspheres is D microspheres, and the average mesoporous aperture of the mesoporous inorganic microspheres is D mesoporous. The long-service-life aluminum plastic film for the lithium battery is reasonable in formula and excellent in opening performance and heat sealing performance; mesoporous inorganic microspheres loaded with water-swelling microspheres are used as an anti-blocking agent of the heat-sealing layer, so that the anti-blocking agent is endowed with water absorption performance, and the service life of the battery is prolonged; according to the invention, the composite microspheres are used as the opening agent, so that the battery capacity attenuation amplitude in an extreme environment is relatively small. The invention further discloses a production process of the long-service-life aluminum plastic film for the lithium battery.

This invention discloses a piecewise adaptive Kalman track tracking method and apparatus based on residual classification, relating to the field of radar track tracking technology. Addressing the problems of poor adaptability to non-stationary measurement noise environments, parameter dependence on human experience, and complex FPGA implementation in existing track tracking methods, this invention proposes introducing a residual classification decision and piecewise adaptive noise adjustment mechanism into the Kalman filter recursive framework. First, a residual vector is calculated based on the predicted state and measurement data. Then, a classification decision is made using the residual vector, the predicted covariance, and the measurement noise covariance of the previous cycle, outputting the measurement quality level. Next, the measurement noise covariance is updated piecewise adaptively based on the measurement quality level. Finally, the filter gain is calculated based on the updated measurement noise covariance and the predicted covariance to complete the correction and update of the state and covariance.

This utility model discloses a shaft seal press-fitting machine, relating to the field of press-fitting machine technology. The press-fitting machine includes a frame, from bottom to top, on which a lifting and positioning mechanism, a symmetrically arranged oiling mechanism, and a press-fitting mechanism are respectively installed. When the lifting platform rises to the middle position of the oiling mechanism, an electric cylinder drives the motor housing to move downwards, descending to be flush with the fuel injector. At this time, two symmetrically arranged cylinders push the fixing plates towards the shaft seal. When the two fixing plates move to near both sides of the shaft seal, the fuel injector applies oil to the shaft seal through the fuel line. A rotating motor drives the shaft seal on the magnetic suction cup to rotate, allowing the shaft seal to contact the oil sprayed from the fuel injector in all directions during the oiling process. Compared to static oiling, the rotating state allows for more even oiling of all parts of the shaft seal, avoiding dead zones or uneven thickness, thereby improving the lubrication performance and sealing effect of the shaft seal.

This invention relates to the field of packaging bag technology, specifically to a moisture-proof and antibacterial composite packaging bag for traditional Chinese medicine. It comprises an outer protective film layer, a middle buffer transition layer, a moisture-proof barrier layer, an antibacterial functional layer, and an inner contact film layer. These layers are arranged from the outside in. The outer protective film layer, middle buffer transition layer, moisture-proof barrier layer, antibacterial functional layer, and inner contact film layer are composited using food-grade adhesives. The middle buffer transition layer is made of low-density polyethylene elastic film. The moisture-proof barrier layer is composited with polyvinyl alcohol high-barrier film and passivated aluminum foil film. The antibacterial functional layer uses food-grade polyolefin film as the substrate. The inner contact film layer uses food-grade polyethylene film. This invention has the following advantages: it integrates multiple benefits such as wear resistance, long-lasting moisture and oxygen barrier, active antibacterial properties, and safety and non-toxicity. Its service life and protective effect are far superior to traditional single-layer and ordinary double-layer packaging.

The application discloses a kind of liquid piston pump systems and working methods of multiple hydraulic cylinder phase difference arrangement, including drive motor, transmission mechanism, first hydraulic cylinder unit, flow convergence pipeline, high-pressure liquid outlet main pipeline and low-pressure liquid inlet main pipeline.First hydraulic cylinder unit includes first hydraulic cylinder and second hydraulic cylinder, two pistons movement phase difference half movement cycle, so that two hydraulic cylinders alternate execution liquid suction and liquid discharge stroke.System further includes at least one same structure hydraulic cylinder unit, each unit is arranged according to preset phase difference, and the output fluid is converged and output after passing through flow convergence pipeline.The application is arranged by pure mechanical structure phase difference, without sensor and controller, can effectively inhibit output flow pulsation, with the advantages of simple structure, high reliability, low cost.

The invention belongs to the technical field of engineering mechanical equipment, and particularly relates to an engineering machine and a steering system.The steering system comprises a steering execution module, an oil supply way and a control unit, and a centering oil cylinder is arranged on a steering axle; the oil supply way is used for supplying oil to the centering oil cylinder so that the centering oil cylinder can be in a centering state. In the linear driving process, a steering axle does not need to execute steering action, but when wheels pass through an uneven road surface, a suspension structure can generate motion interference with a steering execution module, so that the steering axle executes steering action with small amplitude and drives the wheels to continuously swing left and right, and serious tire abrasion occurs. In the application, when the centering oil cylinder is in the centering state, the steering axle needs to overcome the resistance generated by the oil pressure for maintaining the centering state due to the small-amplitude steering action caused by vibration, so that the amplitude of the steering action is reduced by using the resistance, and the tire grinding phenomenon of the engineering machinery in the straight driving process is further reduced.

The present application relates to the technical field of resonator, and discloses a surface acoustic wave resonator and a surface acoustic wave filter, which comprise a piezoelectric layer, and an interdigital transducer and a reflective grating structure arranged on the piezoelectric layer and arranged along a first direction, the reflective grating structure being located at the side of the interdigital transducer; the reflective grating structure comprises a plurality of unit reflective gratings arranged along the first direction, and the finger strips of each unit reflective grating extend along a second direction; the structure of each unit reflective grating is an interdigital reflective grating, a short-circuit reflective grating or an open-circuit reflective grating; in the reflective grating structure, at least one unit reflective grating is an interdigital reflective grating, and the unit reflective gratings other than the interdigital reflective grating are one or both of a short-circuit reflective grating or an open-circuit reflective grating. The present application can weaken the influence of the longitudinal wave of the surface acoustic wave resonator on the filter passband, reduce the insertion loss, improve the flatness of the filter passband, and realize a surface acoustic wave device with high stability and low loss.

A backlight unit comprises a substrate comprising a first area and a second area, each having a plurality of light source blocks, and a light source driver disposed on at least one side of the substrate and connected to the light source blocks of each of the first and second areas through each of first and second sensing lines. The first sensing lines connected to each of the light source blocks of the first area have a first resistance value, and the second sensing lines connected to each of the light source blocks of the second area have a second resistance value.

This application discloses a trajectory planning method, device, equipment, medium, and product driven by wind-induced driving risks, relating to the field of trajectory planning. The method includes: acquiring information data; performing forward inference mapping based on the information data using an aerodynamic reduced-order model on an edge computing server within the computing layer to obtain six aerodynamic components; calculating the kinematic response based on a vehicle multibody dynamics reference model using these six aerodynamic components as external excitation loads to obtain dynamic state information; determining a comprehensive decision instruction set based on a global spatiotemporal dynamic risk field using spatiotemporal pre-aiming and hysteresis decision strategies; and performing vehicle trajectory planning based on the comprehensive decision instruction set. This application can integrate vehicle-road cooperative perception to improve path planning accuracy.

This invention relates to a method for rapid and stable wellbore pressure control in marine hydrate formation drilling, belonging to the field of marine natural gas hydrate formation drilling. The method includes: calculating the volume of activated carbon glass microspheres to be added to the drilling fluid; injecting the drilling fluid with added activated carbon glass microspheres into the riser; when hydrate-bearing rock cuttings decompose and produce methane gas, the activated carbon glass microspheres adsorb the generated methane gas in real time, thereby maintaining stable bottom hole pressure; separating the gas-adsorbed activated carbon glass microspheres after the drilling fluid reaches the drilling platform; desorbing the separated activated carbon glass microspheres through a desorption device, filtering them through a filter device B, and then heating them; and adding the purified activated carbon glass microspheres back to the drilling fluid in the mud pit for reuse. This invention can quickly and effectively solve the problem of sudden overflows or well kicks caused by the decomposition of hydrate-bearing rock cuttings, which is beneficial for safe and efficient drilling in marine natural gas hydrate formations.

The utility model discloses a kind of harness alignment tin dipping devices, comprising: base;Tin furnace, is set to the top of base;Guide plate, top is provided with several partition plates, each partition plate is arranged at intervals, the edge of guide plate is close to tin furnace upper portion setting;Blocking component, including lifting piece and baffle, lifting piece is set to the top of base, and located between tin furnace and guide plate, when lifting piece lifts baffle, baffle is located flush with the position of one side of guide plate;Clamping component, through rotating piece setting in the top of base, for the clamping of one end of harness.The utility model discloses a kind of harness alignment tin dipping devices by auxiliary staff with harness alignment, to play the role of simplifying staff operation step, belong to harness processing technology field.

This invention relates to the interdisciplinary field of aviation safety and artificial intelligence, specifically to an improved WGAN-GP method for generating adversarial examples from ADS-B time-series data. The method includes the following steps: acquiring historical ADS-B flight data and extracting features from five dimensions—longitude, latitude, altitude, speed, and heading—to construct a time-series dataset; building an adversarial example generation model based on an improved Wasserstein distance generative adversarial network and configuring a multi-objective composite loss function for the generator. This invention constructs an LSTM-based generator and discriminator, designs a composite loss function integrating adversarial loss, concealment loss, and temporal smoothness loss, and trains the model using gradient penalty and asymmetric update strategies. The generated adversarial examples possess both high concealment and physical consistency, effectively circumventing various unsupervised anomaly detection models. The model training is stable, providing technical support for building a safer air traffic control defense mechanism.