24results about How to "Accurate pressure" patented technology

The invention relates to a vehicle curve self-adaptive cruise stability control method utilizing differential steering, which adopts a hierarchical control architecture, and combines a differential steering control strategy based on MFAC and a fuzzy logic rule of multi-target weight coefficient self-adjustment based on MPC in upper layer control, so that the stability of the vehicle curve self-adaptive cruise stability is improved. Taking the actual vehicle speed, acceleration, position, yaw velocity and side slip angle of the vehicle as input, and outputting to obtain the expected acceleration of the vehicle; in the lower-layer control, driving and braking switching logic based on a deceleration protection range threshold value and a feedforward-feedback fusion control strategy based on an acceleration error are combined, the actual vehicle speed, the acceleration and the expected vehicle acceleration of the vehicle serve as input, and a vehicle hub motor torque signal is output and obtained; and transmitting the vehicle hub motor torque signal to the vehicle hub motor so as to correspondingly control and change the driving state of the vehicle. Compared with the prior art, the transverse stability of the vehicle in the curve vehicle following process can be improved, and the transverse displacement deviation can be reduced.

The utility model relates to the field of protective film discloses a kind of hot-press processing device of household electrical appliance protective film, including workbench, the top of the workbench is fixedly connected with support, the inner wall top of the support is fixedly installed with hydraulic cylinder, the output end bottom of the hydraulic cylinder is fixedly connected with hot-press plate, the top of the workbench is provided with fixed mechanism, the fixed mechanism includes placing seat, the placing seat is fixedly connected in the top of workbench, the front of the placing seat is provided with recess.This utility model, through the cooperation of first electric push rod, push plate, moving rod and fixed clamp, combined with the second electric push rod driving articulated rod, slide base drives fixed clamp to adjust spacing, realize the automatic pressure fixation of different size protective film, the stress is uniform during fixing process, effectively avoid the displacement and wrinkle of protective film when hot-pressing, significantly improve the close tightness, solve the problem of poor fixing effect of prior art.

The peritoneal dialysis system (10) includes: a circulation machine (20) comprising a pump actuator (60), a patient line valve actuator (34e), at least one supply line valve actuator (34b, 34c), and an exhaust line valve actuator (34a); and a disposable medical fluid cartridge (130) comprising a pumping section (126) configured to operate using the pump actuator (60), a patient line valve seat (132e) configured to operate using the patient line valve actuator (34e), a rigid body (138) defining a common pit (146), at least one supply line valve seat (132b, 132c) located in the common pit (146) and configured to operate using at least one supply line valve actuator (34b, 34c), and an exhaust line valve seat (132a) located in the common pit (146) and configured to operate using the exhaust line valve actuator (34a).

The invention relates to the field of submarine cables, and discloses an armor layer shape correction mechanism and an operation device, the armor layer shape correction mechanism comprises a repair ring, the repair ring comprises an upper shell and a lower shell, and the upper shell and the lower shell form a ring shape; the multiple monitoring pieces are installed on the inner wall of the upper shell and the inner wall of the lower shell respectively; the vertical projection of the monitoring piece on the inner wall of the upper shell does not coincide with the vertical projection of the monitoring piece right opposite to the inner wall of the lower shell; through the synergistic effect of the monitoring strain gauges, the elastic pieces, the buckles and the grooves and in combination with the special layout of the monitoring pieces, real-time, accurate and reliable pressure monitoring and overload protection of the armor layer shaping process are achieved, and finally high quality, high reliability and high efficiency of shaping work are ensured.

This utility model discloses a terminal crimping mold, including a supporting base block. An outer mounting ring is horizontally fixedly connected to the outer side of the supporting base block. The top surface of the outer mounting ring has evenly distributed fixing through holes. A top horizontal groove is horizontally formed on the top surface of the supporting base block. A clamping motor is fixedly mounted on the outer side of the supporting base block. A clamping top plate is symmetrically snapped onto the top surface of the supporting base block. A supporting bottom mold is horizontally connected to the top surface of the supporting base block. This design effectively resists the reaction force generated by pressure, preventing the mold from shaking or shifting, ensuring smooth crimping operations, and improving production safety and reliability. The clamping motor and end cylinder can quickly and accurately complete the clamping and crimping actions, greatly shortening the time of each crimping cycle. Operators only need to perform simple terminal and wire placement and finished product removal operations, reducing manual intervention and operation time, and achieving a highly efficient production process.

This invention relates to an algorithm for compensating for changes in driving force caused by temperature variations in active suspension. The algorithm includes determining temperature and oil viscosity by testing the relationship between torque and pressure difference; slowly applying a constant torque to the motor under set conditions and recording pressure sensor readings; establishing a table showing the relationship between pressure sensor readings, temperature, and oil viscosity at a given torque; estimating oil temperature and then calculating oil viscosity from the table using torque and pressure; estimating the leakage of the electric hydraulic pump based on oil viscosity; estimating the throttle valve pressure drop based on leakage and oil viscosity, calculating the driving force, and calculating the actual pump flow rate based on speed and displacement information; obtaining the flow rate through the throttle valve; calculating the throttle valve pressure drop from the table; and calculating the driving force using a formula. This invention utilizes existing sensors on the active damper for temperature compensation, eliminating the need for additional sensors, accurately determining the valve pressure drop, and calculating the output driving force.

The utility model discloses a constant force value loading device, comprising two clamping plates which are symmetrically arranged on two sides of the constant force value loading device; one side of the adjusting device is connected to the side, close to the other clamping plate, of one clamping plate, and the adjusting device comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod and an eighth connecting rod which are sequentially connected end to end; one side of the force value sensor is connected to the other side of the adjusting device, and the other side of the force value sensor is connected to the clamping plate. The constant force value loading device solves the problems that an air cylinder loading mechanism is unstable in air source pressure and inaccurate in loading force value, and an oil cylinder loading mechanism is high in cost, and has the advantages of being simple in structure, stable in loading pressure, accurate in pressure value, low in cost, small in size and convenient to carry.

The utility model discloses a micro-melting and sputtering pressure sensor integrated bonding wire plate which comprises three interface holes, the three interface holes are arranged on a circuit board, a pressure sensor bonding pad is attached to the circuit board, the pressure sensor bonding pad is provided with a pressure sensor bonding wire area, and the pressure sensor bonding wire area is provided with a pressure sensor bonding wire. The pressure sensor bonding wire area comprises a sputtering film pressure sensor bonding wire area, a glass micro-melting pressure sensor bonding wire area and a middle lead hole; the middle lead hole is arranged between the sputtering film pressure sensor bonding wire area and the glass micro-melting pressure sensor bonding wire area, and a lead bonding point is arranged in the pressure sensor bonding wire area. According to the utility model, the bonding wire plates of two types of sensors are combined and designed to one universal platform, so that the complexity of product design is remarkably simplified, the material cost is reduced, the production cost is also reduced because only one type of bonding wire plate needs to be manufactured and stored, and the same production line can be used for the two types of sensors, so that the production efficiency is improved. And the time for replacing tools and adjusting equipment is shortened, so that the overall production efficiency is improved.

The present disclosure provides a visual pressure regulating catheter, including: a catheter body (1), and a hydraulic dilation balloon (2) and a pressure regulating handle (3) both of which are disposed on the catheter body (1), an endoscope pressure regulating cavity (5) and a dilation liquid perfusion cavity (6) are formed in the catheter body (1), the dilation liquid perfusion cavity (6) is communicated with the hydraulic dilation balloon (2), and the pressure regulating handle (3) is provided with a perfusion port (301) which is communicated with the dilation fluid perfusion cavity (6) and a pressure regulating port (701) which is communicated with the endoscope pressure regulating cavity (5); an observation channel (4) is opened at a position on the endoscope pressure regulating cavity (5) axially opposite to the hydraulic dilation balloon (2), a camera at a front end of the endoscope sequentially passes through the pressure regulating port (701), the endoscope pressure regulating cavity (5) and the observation channel (4) and extends into the hydraulic dilation balloon (2), and an operating rod at a tail end of the endoscope is slidably and sealingly connected to the pressure regulating port (701).

The invention discloses a wide-working-condition and high-stability two-phase experiment circulating system and a testing method thereof, and relates to the field of electronic device heat management, and the experiment circulating system comprises a pumping unit, a flow control and pressure stabilization unit, a pressure control unit, a temperature control unit, a condensation unit and a data acquisition unit. According to the experimental system, a wide-working-condition and high-stability two-phase flow cycle test environment is realized through cooperation of the pumping unit and the flow control and pressure stabilization unit, the flow heat exchange performance of the two-phase flow heat exchanger at different inlet flows, supercooling degrees and dryness can be actually tested, and multi-dimensional data such as temperature, pressure and flow state of each key node in a loop can be monitored in real time; the comprehensive performance of the heat exchanger is completely reflected, and experimental basis and design reference are provided for operation of a two-phase flow cooling system of an electronic device and optimization design of the heat exchanger.

The invention discloses an intelligent monitoring system for an AIPFIMS plasma furnace. The intelligent monitoring system comprises the following steps: step 1, configuring a corresponding sensor; step 2, data analysis and processing; step 3, remote monitoring and control; 4, intelligent early warning and alarming are carried out; and 5, automatically adjusting and optimizing. In addition, trend analysis and prediction can be carried out according to historical data and real-time data through the data processing module, and the performance change and possible faults of the plasma furnace can be predicted in advance.

This utility model relates to the field of adhesive performance testing technology, and discloses an adhesive performance testing device, including a support plate and two positioning rods. The two positioning rods are respectively fixedly disposed between two support plates and located on both sides. A tension assembly is disposed at the lower end of the upper support plate, the tension assembly including a tension sensor and an upper adhesive plate, and a buffer protection mechanism is provided on the tension assembly. A pressure assembly is disposed at the upper end of the lower support plate, the pressure assembly including a lower adhesive plate, a screw, and a pressure spring, and a ball bearing mechanism is provided inside the pressure assembly. In this utility model, the device can reduce the rebound amplitude of the upper adhesive plate under the reaction force of the tension spring, thereby protecting the safety of surrounding personnel, and simultaneously reducing the large amount of physical exertion expended by the testing personnel when turning the handle, providing convenience for the testing personnel during operation.

This invention discloses a method for simultaneous measurement of atmospheric temperature and pressure based on Rayleigh-Brillouin scattering spectroscopy, belonging to the field of lidar. The method includes: emitting a laser in the atmospheric environment to be measured and acquiring the scattered echo signal of the laser; fitting the Rayleigh-Brillouin scattering spectrum of the scattered echo signal in the atmospheric environment to be measured; extracting the overall linewidth Γ of the Rayleigh-Brillouin scattering spectrum; and calculating the number of molecular scattered photons N. s ; will N s Substituting G1 and Γ into the inversion model yields the synchronous measurement results of atmospheric temperature T and pressure p; where G1 represents the atmospheric temperature and the overall linewidth Γ and the number of molecular scattered photons N. s The relationship between pressure and overall linewidth Γ and the number of molecular scattered photons N is expressed as follows: s The relationship between Rayleigh and Brillouin scattering spectra and atmospheric temperature and pressure is fully explored in this invention, establishing a new inversion model that enables accurate and synchronous measurement of atmospheric temperature and pressure.

The invention discloses a solid attitude and orbit control engine dual-pressure sensor information redundancy processing method, which comprises a preprocessing step, a third information acquisition step and a redundancy processing step, and specifically comprises the following steps: firstly, carrying out smooth processing and boundary condition conformity judgment on dual-sensor signals, preliminarily eliminating invalid information, and carrying out redundancy processing; and then resolving the ballistic model in the zero dimension to obtain a pressure simulation value, processing in combination with the indication values of the double sensors to obtain third information, and when the difference between the indication values of the double sensors is within an allowable range, adopting the weighted average value of the indication values of the double sensors as a final output value, otherwise, adopting the third information to choose. According to the method, the pressure intensity of the inner ballistic trajectory is estimated through inner ballistic trajectory simulation calculation, information fusion is carried out by adopting the zero-dimensional inner ballistic trajectory model pressure intensity simulation value of the solid engine and the double pressure intensity sensors, and the problem that the solid attitude and orbit control engine can only be provided with two pressure intensity sensors at most for redundant fault-tolerant design under the limitation of the cost and the size is solved.

The invention relates to the technical field of makeup tool manufacturing, and discloses a special-shaped makeup powder puff with an edge enhanced supporting structure, which is formed by sequentially laminating a leather layer, a waterproof film, foam and a hydrophilic polyurethane layer, the waterproof film and the foam are bonded through a gradient volatile polyurethane adhesive prepared from ethyl acetate and dipropylene glycol methyl ether acetate, and in the edge area of the powder puff, the adhesive permeates into the surface layer of the foam in a compressed state and is cured, so that a rigid composite supporting framework is formed; according to the manufacturing process, partitioned differential pressurization is adopted, and edge glue is forced to deeply permeate; in cooperation with gradient heating curing, edge framework shaping and waterproof film stress relaxation are sequentially achieved by means of the difference of the solvent evaporation rate; and finally, compounding the fabrics on the two sides and punching along the central line of the edge framework. According to the invention, the differentiated touch feelings of stiff and shape-preserving edges and loose and soft center can be realized without introducing extra inserts, and the technical problem that the soft film lamination is easy to generate orange peel patterns can be effectively solved.

This utility model relates to the field of battery end cap assembly, and discloses a battery end cap assembly assembly device. The battery end cap assembly assembly device includes a support platform and a pressing mechanism. The support platform is provided with a support groove for supporting the end cap and the lower plastic, and has a contour shape consistent with the end cap and the lower plastic. A first positioning part is provided around the support groove on the support platform. The pressing mechanism is located above the support platform and is used to press the end cap and the lower plastic in the support groove to form an end cap assembly. A second positioning part is provided on the lower surface of the pressing mechanism, and the second positioning part is configured to fit with the first positioning part to achieve positioning of the pressing mechanism and the support platform. The support groove with a contour shape consistent with the end cap and the lower plastic can effectively limit the position of the end cap and the lower plastic, improving the alignment accuracy of the end cap and the lower plastic. The cooperation of the first positioning part and the second positioning part can achieve precise positioning of the pressing mechanism and the support platform, ensuring the assembly quality of the end cap and the lower plastic.

The utility model discloses a spring flattening machine, and the device aims at solving the difficulty of meeting the diversified spring flattening demand in the prior art, and when facing some spring flattening work needing different force or speed control, it is not up to the task, and cannot be flexibly adjusted, the device comprises a base, and the upper end face center of the base is provided with an installation frame on one side, a supporting frame is arranged on the upper end face of the base on the side of the installation frame, a pneumatic telescopic rod is arranged at the center of the upper end face of the installation frame, the output end of the pneumatic telescopic rod penetrates through the side wall of the supporting frame and reaches the other side of the supporting frame, and the end part is fixedly connected with a flattening adjusting structure, and a stable frame is arranged at the rear side of the upper end face of the base, the utility model can meet the spring flattening scene demand, at the same time, realizes accurate and uniform pressure, and is convenient to disassemble, assemble and adjust, improves the universality and maintainability, adapts to different production requirements, plays the positioning and fine adjustment role, and enhances the equipment adaptability.

The utility model relates to an off-line verification device for a closed safety valve, and belongs to a safety valve inspection and detection device. The bottom of the oil jack is fixedly connected with the upper portion of the base flat plate through a bolt, a piston of the oil jack penetrates through the verification platform, and the top of the piston of the oil jack is fixedly connected with the lower portion of the verification disc. The clamping hook is in sliding connection with the clamping hook slide way of the verification platform, and the lower end of the sealing cover is arranged above the base flat plate and located between the inner sealing ring and the outer sealing ring. The sealing device has the advantages that the structure is novel, the safety valve is clamped through the clamping device, the sealing device formed by the sealing cover, the inner sealing ring and the outer sealing ring is safe and reliable in a closed environment, the sealing pressure test and the leakage rate test are met, the defect of manual detection is overcome, the requirement for transformation and upgrading of detection equipment is met, and the precise verification function is enhanced.

The utility model discloses a kind of automatic pressure regulating systems of wringing roller, belong to wringing roller pressure regulating technical field. Including wringing roller device, pressure pipeline and control circuit, wringing roller device both ends are provided with telescopic air cylinder for adjusting the pressure of wringing roller;Pressure pipeline includes pressure gas source, ball valve, electromagnetic reversing valve, first one-way throttle valve, second one-way throttle valve and proportional pressure regulating valve;Control circuit includes pressure sensor and controller, pressure sensor is installed on the pipeline between proportional pressure regulating valve and telescopic air cylinder, pressure sensor and proportional pressure regulating valve are connected with controller, and the pressure signal of pressure sensor is received by controller and the outlet output pressure gas value of proportional pressure regulating valve can be controlled. Solve the technical problem that wringing roller pressure regulation is not timely, unstable in prior art, leading to poor wringing effect, equipment wear aggravation, low production efficiency.

The invention discloses a servo control hydraulic drive type ultrahigh-pressure water jet pump, and relates to the technical field of high-pressure water jet pumps, the servo control hydraulic drive type ultrahigh-pressure water jet pump comprises a support frame, and further comprises a supercharger and a low-pressure water filter, the supercharger is fixedly connected to the top of the support frame, the water outlet end of the low-pressure water filter is communicated with the water inlet end of the supercharger, and the supercharger is used for pressurizing low-pressure water; the water outlet end of the supercharger is communicated with an energy accumulator for accumulating energy; the control system controls a hydraulic oil way through a hydraulic control valve to drive a piston in the hydraulic cylinder body to conduct left-right reversing. When the high-pressure sensor detects that the pressure reaches a set value in real time, the whole system stops pressurizing, and the working operation state of the servo motor can be rapidly adjusted; the control system adopts closed-loop control, and accurate pressure and flow control of ultrahigh-pressure jet flow can be realized; according to the working characteristics of the servo motor type ultrahigh-pressure jet pump, when ultrahigh-pressure jet does not need to be output, the servo motor does not generate ultrahigh-pressure water jet at idle speed, and the service life of high-pressure quick-wear parts is greatly prolonged.

The utility model relates to the technical field of chemical pipeline protection, and disclose a surfactant production pipeline junction protective cover, including two flange pipelines, through the control two flange buckles relative buckling in flange pipeline junction both sides, benefit from the shape and the radian characteristics of flange buckle, further use two reinforcing internal threads to realize the preliminary connection of flange buckle and flange pipeline, when using, according to the demand embedding in reinforcing internal thread and adjusting connecting screw group, make connecting screw group accurate pressure in the position of pipeline junction easy to leak, before connecting flange buckle, through buckling in rubber pad in flange buckle, make rubber pad can be clamped between flange pipeline and flange buckle, benefit and the orientation of pressure internal thread, when using, according to the demand control pipeline edge easy to leak part place's pressure bolt, make rubber pad perpendicular pressure on flange pipeline under the action of pressure bolt, realize the effect of accurate sealing to pipeline junction.

The invention relates to the technical field of product assembly, in particular to a manual rolling mechanism and a rolling method thereof. The floating part enables the rolling wheel on the rolling frame to move relative to the handheld support, the handheld support moves towards the rolling frame to abut against and press the unlocking assembly, the unlocking part is driven to be away from the rolling wheel to unlock rotation of the rolling wheel to achieve rolling operation, the rolling wheel can rotate freely, and normal operation can be achieved only when a screen is assembled and pressed. Screen press-fit operation can be conveniently carried out; when the support is held by hand to press the unlocking assembly, the locking component is driven to move towards the direction of the roller, so that the locking component abuts against the roller and locks the roller, the roller is locked and cannot rotate, the pressure in the pressing operation process is controlled, it can be ensured that the pressure applied to screen assembly pressing is correct, and product damage or assembly failure is avoided.

The utility model discloses an ophthalmic postoperative pressure bandaging structure, including the fixed band, is provided with pressure material pad and pressure visible mechanism respectively on the fixed band, the pressure visible mechanism includes the air bag of setting on the inner wall of fixed band one side, the air bag one side surface is connected with the transparent tube who sets up, the transparent tube is provided with the float in the inside, through the fixed band, pressure material pad and pressure visible mechanism integration, realized fast and convenient pressure bandaging and accurate pressure monitoring and regulation, the fixed band can complete bandaging and flexible pressure regulation fast through the connection adjusting structure, saves medical staff operation time, the air bag, transparent tube and visible piston etc. of pressure visible mechanism, convert the bandaging pressure into the displacement display of intuition, and it is convenient for medical staff and patient accurate acquisition pressure value, effectively solved the traditional bandaging mode operation cumbersome, the problem of inaccuracy of pressure control, lack of monitoring means, improved the bandaging efficiency and effect.

The utility model discloses a bending device for profile processing, which comprises a base, a bearing frame is connected to the base through a sliding rail, a clamping structure for clamping a profile is mounted on the bearing frame, a rotating structure for controlling transverse rotation is mounted on the base, and a supporting frame is connected to the upper end of the rotating structure. According to the bending device for sectional material machining, quick and automatic clamping and limiting of sectional materials can be achieved. By means of the clamping mode, the operation efficiency is improved, manual intervention is remarkably reduced, the stability and consistency of the machining process are ensured, and meanwhile the device further has the height adjusting function and can be flexibly adjusted according to profiles of different sizes and shapes.