232results about How to "Guaranteed running stability" patented technology

The invention relates to the technical field of underground gas production, and discloses a metal sealing gas production wellhead device which comprises a body. A housing; the filtering assembly is used for circularly filtering gas in the wellhead; the self-discharging assembly is used for automatically discharging impurity particles attached to the filtering assembly; the filtering assembly comprises a screening device and an indexing rotating device; and the screening device is used for filtering gas impurities in the well. According to the metal sealing gas production wellhead device, drum-type double-layer filtering can be achieved through the arranged filtering assembly, so that it can be guaranteed that impurity particles in mined gas can be greatly filtered out, and the purity of the extracted gas is guaranteed. And the indexing rotation of the circular filter cartridge can be controlled by utilizing the indexing rotation device, so that the gradually blocked circular filter cartridge can be rotated, and clean filter holes face the underground again, and therefore, circulating automatic anti-blocking screening is carried out, and the operation stability of the gas production wellhead device is ensured.

The invention discloses a dual three-phase permanent magnet motor current control method and system under high speed and low carrier wave ratio, and belongs to the technical field of permanent magnet motor control. The method mainly comprises the following steps: reconstructing a motor mathematical model by adopting VSD conversion and Park conversion; designing a linear expansion state observer; a reference value of an output voltage vector is obtained in combination with deadbeat predictive current control; and performing time delay compensation and angle delay compensation on the output voltage vector to obtain a reference value of a final output voltage vector, sending the reference value to an SVPWM module for modulation, and outputting a PWM pulse signal for driving a motor. No motor parameter is used in the current loop design process, system errors caused by mismatching of the motor parameters can be avoided, and the system robustness is improved; meanwhile, only one control parameter needs to be determined, the parameter setting difficulty is greatly reduced, and stable operation of the high-speed permanent magnet motor under the low carrier wave ratio is achieved.

The invention relates to the technical field of automatic scented tea packaging and conveying, and discloses feeding equipment based on packaging and a feeding method for scented tea packaging. Materials to be packaged are conveyed from the interior of the feeding guide mechanism to the interior of the quantitative conveying mechanism step by step, a cylindrical packaging material is subjected to thermal compounding forming in the process of passing through the packaging material barrel manufacturing mechanism, and before quantitative materials separated by the quantitative conveying mechanism fall into the cylindrical packaging material, the packaging sealing mechanism seals the bottom end of the cylindrical packaging material in advance in a thermal compounding mode; quantitative materials fall into the formed cylindrical packing material from the bottom of the batch blanking mechanism; before the next group of materials fall into the cylindrical packaging material, the packaging sealing mechanism seals and cuts off the bottom end of the cylindrical packaging material in advance in a thermal compounding manner; the cut and packaged materials continue to fall on the upper surface of the output conveying belt and are output along with conveying of the output conveying belt, the continuous material conveying and packaging process can be conducted, and the packaged materials can be output continuously and conveyed to the rear end.

The invention discloses an energy storage converter control method, which relates to the technical field of energy storage converters and is a method for monitoring the running state of an energy storage converter in real time and executing fault protection and / or state machine switching. The energy storage converter fault protection method comprises the following steps: reading a GPIO state or collecting a measurement value of each protection point, and comparing the measurement value with a fault threshold parameter to determine whether a fault occurs; when a fault occurs, a fault bit corresponding to the fault code register is activated, and the state machine is switched to a fault state and executes a fault protection program; the energy storage converter state machine switching method comprises the following steps: detecting whether a master control word register jumps or not compared with a previous period and executing corresponding operation; and executing corresponding control logic according to the current state of the state machine, wherein the states comprise a shutdown state, an alternating current pre-charging starting state, a standby state, an operation state, a fault state and a synchronous phase pulse test state. According to the method, the fault can be quickly responded, and the operation stability and safety of the PCS are ensured.

The invention discloses a security protection method for convergence and distribution equipment based on data intelligence, relates to the technical field of security protection of the convergence and distribution equipment, and solves the technical problem that in the prior art, multi-service execution security analysis cannot be carried out on the convergence and distribution equipment, so that the traffic control security is reduced, in particular to service security analysis. Safety analysis is performed on equipment operation services in the operation process of the convergence and distribution equipment, monitoring control is performed on the operation services of the convergence and distribution equipment, and safety analysis is performed on service execution according to service requirements, so that potential safety hazards existing in service execution are avoided, and the operation safety of the convergence and distribution equipment is reduced; and the security reduction of other security execution services is also influenced.

The invention provides a distribution line short-circuit fault processing device using voltage and current time sequence information. A distribution line short-circuit fault processing device utilizing voltage and current time sequence information is applied to a distribution line, a plurality of measuring points are arranged on the distribution line, each measuring point is provided with a circuit breaker, and the distribution line short-circuit fault processing device utilizing the voltage and current time sequence information is arranged on the measuring points. The distribution line short-circuit fault processing device using the voltage and current time sequence information comprises a calculation module, a first fault detection module, a first control module, a second fault detection module, a second control module, a third fault detection module, a fourth fault detection module, a fifth fault detection module and a third control module. According to the distribution line short-circuit fault processing device based on the voltage and current time sequence information, the requirements of rapid power supply recovery of an instantaneous fault and accurate isolation of a permanent fault can be met.

The electric fusion welding machine comprises a welding machine body, a movable grip, an adjusting knob, heat dissipation fins and an input interface, the adjusting knob is installed in front of the welding machine body, a state display screen is arranged on the left side of the adjusting knob, the heat dissipation fins are arranged below the state display screen, and an output interface is arranged below the heat dissipation fins. An output interface is arranged in the welding machine body, a binding post is arranged in the output interface, a supporting spring column is arranged below the welding machine body, supporting spring wheels are installed on the supporting spring column, supporting spring blocks are installed on the supporting spring wheels, and heat dissipation fins are arranged on the two sides of the welding machine body. The spring plate structure has a good damping effect, the spring plate structure has a good bearing effect, and the L-shaped interface grip fixedly connected above the power supply connector is matched with the limiting head on the power supply connector, so that plugging and unplugging can be facilitated.

The invention discloses an annular cutting machining device for wire harness production, and belongs to the technical field of wire machining equipment.The annular cutting machining device for wire harness production comprises a lantern ring, a cutter limiting piece is arranged on the lantern ring in a sliding mode, and the cutter limiting piece slides in the circumferential direction of the lantern ring; a cutting knife is detachably arranged at the end part of the cutting knife limiting piece; the cutter limiting piece comprises a fixed base, an arc-shaped block, a right-angle rotating rod, a fixed rod, a sliding connecting ball, a bolt connecting hole and a cutter placing seat; when the cutter limiting piece is arranged on the lantern ring in a sliding mode, a sliding connecting ball is fixed to the middle position of the arc-shaped block through a fixing rod. The wire harness girdling device has the advantages that the cutting knife is arranged on the lantern ring in a sliding mode, in the girdling operation process of the wire harness, the cutting knife can stably cut the wire harness along the lantern ring by one circle, the cut end is neat, and when the wire harness is used subsequently, the actual application effect of the wire harness is better.

The invention provides a photovoltaic consumption method and device, electronic equipment and a storage medium, and the method comprises the steps: predicting the photovoltaic power generation power and the charging load power of a charging station, so as to generate a photovoltaic power generation power prediction curve and a charging load power prediction curve in a future preset time period; according to the photovoltaic power generation power prediction curve, the charging load power prediction curve and the supporting capability of a power supply line for supplying power to the charging station, identifying a charging invitation time period and a discharging invitation time period in a future preset time period; when the charging invitation time period is identified, generating and issuing a charging invitation order corresponding to the charging invitation time period; and when the discharge invitation time period is identified, generating and issuing a discharge invitation order corresponding to the discharge invitation time period. By generating and issuing the charging invitation order and the discharging invitation order, the photovoltaic power generation and load consumption of the charging station can be balanced, and the heavy load of the power supply line can be avoided, thereby ensuring the operation stability of the power distribution network.

The invention belongs to the technical field of e-commerce data management, and particularly relates to a data visualization analysis system based on an e-commerce platform, which comprises a data acquisition and integration module, an intelligent analysis engine module, a data visualization processing module, a display interaction module, a rear-end operation monitoring module and a management terminal, the data acquisition and integration module acquires data from the e-commerce platform and processes the data, the intelligent analysis engine module carries out deep mining and analysis on the processed data source, and the data visualization processing module adopts a graphical display technology to carry out visualization processing on an analysis result and presents the result to a user, so that the user understanding threshold is reduced, and the user experience is improved. The rear-end operation monitoring module monitors the operation of the display interaction module and accurately evaluates the operation performance of the display interaction module, and checks and maintains the display interaction module and strengthens subsequent supervision when a rear-end operation early warning signal is generated, so that the operation stability, the operation safety and the display interaction effect of the display interaction module are ensured; and the management difficulty of managers is obviously reduced.

The invention discloses an electric power marketing measurement data cloud sharing method based on a block chain, and relates to the technical field of electric power data sharing, comprising a plurality of user terminals, an electric power marketing measurement data automatic acquisition system, a block chain system and a data storage system, the block chain system comprises an encryption algorithm, a block chain network, a block chain node, a privacy data shielding module and an alarm module, the user side is connected with the electric power marketing measurement data automatic acquisition system, the electric power marketing measurement data automatic acquisition system is connected with the block chain system, and the block chain system is connected with the data storage system. According to the electric power marketing measurement data cloud sharing method based on the block chain, the electric power marketing measurement data provided by different user sides are in different block chain nodes, so that even if a certain block chain node is damaged and attacked, other block chain nodes are not influenced, and the operation stability of the whole system is ensured.

The invention belongs to the technical field of production testing in the manufacturing industry, and particularly discloses a production testing system and method based on the manufacturing industry, a terminal and a medium, and the system comprises a back-end service layer which is in communication connection with a front-end service layer for information interaction, dividing the business logic of the production test into a plurality of business modules which can be independently managed through a module registration mechanism; the equipment interaction layer comprises an equipment driving interface, at least one equipment driving plug-in and an equipment communication unit; and the system integration layer is used for carrying out information exchange with a manufacturing execution type service system through a standardized data interaction mode so as to obtain and send the production test data. Test data is aligned with a manufacturing execution type business system through a standardized data interaction mode, connection between a production test link and manufacturing process management is realized, and the overall cooperative capability of a production line is improved.

The invention relates to the technical field of steel wire drawing, and discloses a wire drawing device for steel wire drawing. A winding roller; the material box is used for cooling the drawn steel wire; a drawing assembly; the drawing device is used for drawing steel wires; the material roller is used for collecting the wiredrawn steel wires; the driving device is used for driving a drawing assembly in the machine body to draw the steel wire; and the wire drawing change showing assembly is used for detecting the diameter change of the drawn steel wire. According to the wire drawing device for drawing the steel wire, the change of the diameter of the steel wire after the wire drawing process can be detected through the wire drawing change showing assembly, the slight change of the steel wire can be directly shown, and colored ink is directly dip-dyed on the changed steel wire; therefore, the quality change caused by long-time drawing of the die during steel wire drawing can be avoided, timely adjustment is realized, and the reject ratio generated in the steel wire drawing process is reduced by directly detecting the change of the diameter during rolling of equipment.

The invention discloses an automatic wire take-up machine, which belongs to the technical field of wire take-up machines. The machine comprises a support base box and a detachable cover plate sleeved and installed on the top of the support base box, a storage cavity bin, a wire take-up cavity, and a water collecting frame with a drain groove. The wire take-up cavity is provided with a circumferential drive module and a retracting mechanism, and the front side of the detachable cover plate is movably hinged with an outward cover plate for sealing the wire take-up cavity. Through a cleaning mechanism configured on a plurality of limit rod sleeves configured on the retracting mechanism, in the process of retracting the wire, a wiping sponge configured inside the disc cavity can be controlled to rotate by a third servo motor, so that the wiping sponge on one side is dipped in the cleaning reagent stored in the upper cleaning reagent storage box during the rotation process, and the wiping sponge on one side is kept relatively dry. Through the action of rotation, the wiping sponge dipped in the cleaning reagent wipes the outer surface of the retracted wire, so that the cleaning reagent is evenly applied on the outer surface of the wire.

The utility model relates to electric drive bridge motor technology field, concretely relates to a kind of electric drive bridge oil-water composite cold motor, comprising: motor main body, including oil sump and base;The oil sump is equipped with oil outlet;The base is equipped with water inlet and water outlet;The water channel that is connected in the base inside water inlet and water outlet;It is equipped in the coarse filter, oil pump, filter and oil cooler of the radial side portion of motor main body and sequential butt joint;The coarse filter is butt joint with the oil outlet;The oil cooler is equipped with water inlet hole and water outlet hole;Water inlet pipe, butt joint with the water inlet;First water outlet pipe, butt joint with the water outlet in one end, butt joint with the water inlet hole in the other end;Second water outlet pipe, butt joint with the water outlet hole.The common implementation of the cooling setting and water cooling setting is guaranteed to the cooling effect of motor under various working conditions, and then the operating stability and service life of motor are guaranteed.

The invention discloses an agricultural non-point source pollution treatment system, and relates to the technical field of agricultural environmental protection and water treatment, and the agricultural non-point source pollution treatment system comprises an ecological ditch unit, an ecological pond unit, a connecting pipeline and a control unit; the ecological ditch unit is used for carrying out primary pretreatment on sewage through a plant enhanced corridor and an ecological filter dam to remove suspended solids and part of pollutants; the ecological reservoir pond unit realizes deep purification through a multi-stage process of flocculent precipitation, enhanced denitrification, ecological treatment and a stable area; the control unit intelligently regulates and controls water flow based on water quality monitoring data, water reaching the standard is directly reused in farmland or lakes, and water not reaching the standard enters a pond to be further treated. According to the invention, stepped deep removal of pollutants, cyclic utilization of water resources and self-adaptive operation of the system are realized, and the treatment efficiency and stability are improved.

The invention provides a double-water-temperature efficient water mixing control integrated system which comprises an air conditioner host, a water-air heat exchange type tail end, a water tank module and a radiation heat transfer system, and the water tank module communicates with the air conditioner host, the water-air heat exchange type tail end and the radiation heat transfer system through pipeline assemblies. The water tank module comprises a water storage space and an equipment installation space, and a first pump body, a second pump body, a third pump body, a water valve and a constant-temperature water mixing valve are arranged in the equipment installation space. The three-way pipe is arranged in the water storage space and used for decoupling and distribution of cold water and hot water, and stable operation between the host and the end equipment is guaranteed. The system supports an air-conditioning mode, a floor heating mode and a radiation mode, an air-conditioning host prepares cold and hot water according to requirements, and efficient transmission and accurate regulation and control are achieved through a pipeline and end equipment. The constant-temperature water mixing valve dynamically adjusts water temperature, the water valve protects system safety, the water tank module optimizes water storage and equipment arrangement, heat loss is reduced, and energy efficiency is improved. The system has the characteristics of efficient cold and hot water management, flexible temperature control and energy-saving operation, and is widely applicable to the requirements of refrigeration, heating and dehumidification of modern buildings.

The invention relates to the field of high polymer material forming and processing, and discloses an automobile polylactic acid composite material interior trim production device which comprises a lower mold assembly, a supporting assembly, a traction assembly and an upper mold. The lower die assembly is slidably connected to the supporting assembly, and the traction assembly is arranged below the lower die assembly. The traction assembly drives a lower section mold in the lower mold assembly to do horizontal reciprocating motion through a driving motor and a transmission mechanism; and the transmission mechanism synchronously drives the sliding plate and the convex teeth in the lower section mold to vertically lift in a reciprocating manner. Through phase matching of the cam and the cam shaft, the convex teeth stretch out and pierce the material only when the lower section die moves in the stretching direction and retract in the return stroke, and intermittent one-way shearing of the bottom end of the material is achieved. The device further has a variable-speed variable-pitch adjusting function, and the shearing stroke and speed can be switched according to the material forming stage. According to the invention, molecular chain orientation can be effectively induced, and the crystallization rate of the polylactic acid material and the mechanical strength of the interior trim part are improved.

The utility model belongs to the technical field of double-sided release film production, particularly relates to a double-sided release film production processing device, and aims to solve the problems that the efficiency is low and the precision is easily influenced by operators when the position of a cutting blade is manually adjusted to adjust the cutting width in the prior art; in order to solve the problems that in the prior art, due to the fact that a dust removal roller is short of a self-cleaning function and needs to be frequently shut down for cleaning, the production efficiency is influenced, the following scheme is provided: the automatic dust removal device comprises a rack, and an unwinding roller and a winding roller which are used for unwinding and winding are arranged at the top of the rack. On the basis of high-precision displacement adjustment, vibration offset is eliminated through the self-locking characteristic of a worm gear, and the stability of the slitting width of film materials of different specifications is ensured. The self-cleaning assembly integrating the scraping plate and the negative pressure dust collection removes impurities on the surface of the dust removal roller through dynamic contact type scraping, the dust is sucked away in real time in combination with a negative pressure pipeline, the efficient dust removal period is prolonged, and the shutdown maintenance requirement is reduced.

The invention discloses a sea water desalination device capable of comprehensively utilizing ocean energy, and relates to the technical field of sea water desalination. The bottom of a connecting frame is connected with a condensation cover, the bottom of the condensation cover is connected with a U-shaped groove, the output end of an adjusting motor is connected to one end of the bottom of a supporting plate, and one end of the top of the supporting plate is connected with a reflection focus lens through a universal joint; by controlling the adjusting motor and the adjusting electric push rod to be matched with the universal joint and the rotating seat, multi-angle adjustment of the reflecting focus lens is achieved, the adjusting motor and the adjusting electric push rod are matched with the universal joint and the rotating seat, and the adjusting motor and the adjusting electric push rod are matched with the universal joint and the rotating seat to adjust the reflecting focus lens. The stirring motor drives the stirring rod and the scraping rod to stir seawater in the evaporation boiler, so that separated crystal salt is prevented from covering the water surface and hindering evaporation of water, the operation stability of the device is ensured, and the fresh water preparation speed is increased.

The invention discloses a wind turbine generator variable pitch PID gain dynamic adjustment optimization method and system. The method comprises the following steps that S1, a rotating speed-torque curve is determined; s2, variable-pitch PID gain setting is carried out under the limited rotating speed and the variable air density; s3, variable-pitch PID gain scheduling of the limited rotating speed is carried out; s4, variable-pitch PID gain scheduling of the variable air density is carried out; s5, performing variable pitch PID gain scheduling under variable turbulence; compared with an existing variable-pitch PID control method, the variable-pitch PID control method has the advantages that additional control means do not need to be added, the technical maturity is high, the needed hardware cost is low, robustness is good, the real-time performance is excellent, the influence of the limited rotating speed, air density and turbulence on variable-pitch PID gains is comprehensively considered, and the method is suitable for large-scale popularization and application. Therefore, the problems of overspeed rotating speed and power fluctuation of the generator caused by changes of the rotating speed and the air density under the condition of large turbulence are effectively reduced.

The utility model relates to a kind of connecting mechanism and equipment pedestal, belong to laser direct imaging equipment technical field.Connecting mechanism includes positioning and guiding component, is set in the splicing of two adjacent pedestals, for the directional splicing of two adjacent pedestals together;Positioning and guiding component includes the first guide plate and second guide plate respectively set in two adjacent pedestals;First guide plate and second guide plate can be slid along splicing direction relative to the pedestal where it is;One of first guide plate and second guide plate is provided with convex part, and the other is provided with recess part;Convex part and recess part are used to guide and position two pedestals in splicing process;Locking assembly is used to fix two adjacent pedestals.By the guiding and positioning effect of first guide plate and second guide plate and the fixing effect of locking assembly, the accuracy and stability of splicing can be ensured while ensuring the rapid splicing of pedestal.

This utility model belongs to the technical field of injection devices, and provides a screw connection mechanism for injection equipment and an injection device. The connection mechanism includes: a hollow shaft, which is fixedly connected to the output end of a motor, and the inner peripheral wall of the hollow shaft is provided with a first limiting structure; a connecting sleeve, which is axially movable and disposed within the hollow shaft and connected to the screw, and the outer peripheral wall of the connecting sleeve is provided with a second limiting structure. Compared with the prior art, this utility model, by providing an inner peripheral wall with a first limiting structure within the hollow shaft and a matching second limiting structure on the outer peripheral wall of the connecting sleeve, allows the two to cooperate through multi-faceted contact. This enables the connecting sleeve and the screw to rotate synchronously when the hollow shaft rotates, while allowing the connecting sleeve to move freely along the axial direction. This structure simplifies the complexity of traditional connection structures, avoids problems such as poor fit and clearance accumulation caused by multi-stage connections or rolling elements, and improves transmission efficiency and equipment service life.

This utility model discloses a combined antenna with lead wires, comprising: a housing and a base plate; a communication array and a positioning array are disposed within the housing, and the communication array and positioning array are respectively connected to the inner side of the base plate; a communication port connector passes through the base plate, and the communication array communicates with the communication port connector; a lead wire also passes through the outer side of the base plate, and an array port connector is disposed at the bottom of the lead wire, and the positioning array communicates with the array port connector through the lead wire. The combined antenna's communication array communicates with the communication port connector, and the positioning array communicates with the array port connector through the lead wire, thus realizing data communication and positioning functions and ensuring the operational stability of the combined antenna; furthermore, replacing the original fixed positioning array with a lead wire method facilitates the installation of the combined antenna and is applicable to rail transit systems with narrow top openings, ensuring the ease of installation and performance of the combined antenna.

The utility model discloses a stabilizing device for a spiral anchor, which relates to the technical field of engineering machinery and comprises an anchoring box, a driving component, a spiral anchor rod, a movable plate and an anchor rod stabilizing component, and the anchor rod stabilizing component comprises a first positioning ring plate and a second positioning ring plate which are positioned above the spiral anchor rod; and a reinforcing built-in rod for guiding and limiting the spiral anchor rod is fixedly inserted into the inner wall of the spiral anchor rod. The first positioning ring plate, the second positioning ring plate, the reinforcing columns, the reinforcing built-in rods and the positioning bottom plate are used in cooperation, so that the spiral anchor rod can be guided and limited on the outer walls of the bottom end and the top end when the spiral anchor rod moves downwards to drill, and then it is guaranteed that the spiral anchor rod can move downwards in the state of being perpendicular to the bottom face of the movable plate all the time; and the problem that the joint of the spiral anchor rod and the movable plate deviates and is staggered under the action of external force in the soil drilling process is solved, and the operation stability of the spiral anchor rod is guaranteed.

The utility model relates to the field of motor assembling, in particular to a large permanent magnet motor assembling tool which comprises a tool support, an adjusting mechanism is installed on the tool support and comprises a supporting plate, a roller and two rotating rods, and the two rotating rods are rotationally arranged on the two sides of the tool support. The two supporting plates are fixedly connected to the side wall of the rotating rod, and the rollers are rotationally arranged on the supporting plates; the side wall of the tool support is provided with a flatness detection mechanism, and the flatness detection mechanism is divided into a side wall detection member and a circumference detection member. The beneficial effects of the utility model are that the tool can be accurately adjusted according to bearings with different specifications and shapes by using the adjusting mechanism; it is ensured that the bearing can be smoothly positioned in the installation process, and the problems of vibration and noise caused by assembly deviation are solved. And meanwhile, the adjusting process is simplified by introducing the jack, and the assembling efficiency is improved.

The present invention belongs to the technical field of generator rotor operation detection, and specifically is a large-capacity doubly-fed generator rotor operation reliability assessment system, comprising a server, a rotor position change detection and analysis module, a rotor operation abnormality decision module, a bearing hidden danger assessment module, an operation reliability comprehensive evaluation module and an early warning terminal; the present invention uses the rotor position change detection and analysis module to monitor the position of a target rotor in real time, and when a normal rotor position change signal is generated, the rotor operation abnormality decision module monitors and analyzes the operation state of the target rotor to assess its abnormal operation condition, and when an abnormality decision qualified signal is generated, the bearing hidden danger condition of the corresponding bearing is analyzed through the bearing hidden danger assessment module, so as to realize a comprehensive analysis of the operation reliability of a large-capacity doubly-fed generator rotor and timely feedback and early warning, and the analysis is more comprehensive and accurate, which is conducive to ensuring the operation safety and operation stability of the large-capacity doubly-fed generator rotor.

The invention discloses a refrigeration system, a low-temperature preservation box, a refrigeration control method and device and a storage medium. The refrigerating system comprises a gas-liquid separator with an inlet connected to an outlet of a condenser, an air outlet connected to an inlet of a first heat exchange pipe of a condensation evaporator, a liquid outlet connected to an inlet of a second heat exchange pipe of the condensation evaporator through a first throttling element, and an outlet of the second heat exchange pipe connected to an air suction port of a compressor; the first heat exchange tube comprises at least two outlets, the outlets correspond to different heat exchange lengths, each outlet of the first heat exchange tube is connected to an inlet of the evaporator through a second throttling element, and an outlet of the evaporator is connected to an inlet of the second heat exchange tube; in the running process of the system, only one outlet of the first heat exchange pipe communicates with the second throttling element at any moment. The heat exchange length of the condensation evaporator can be adjusted preferentially, then the compressor is adjusted, the frequency increasing requirement of the compressor is reduced when cooling capacity output needs to be increased, and the frequency reducing amplitude of the compressor is prevented from being too large when cooling capacity output needs to be reduced.

The invention discloses a vehicle fault-tolerant control method under the abnormal condition of a multivariable measurement sensor, and belongs to the crossing field of electric digital data processing and intelligent driving vehicle control technologies. The method comprises the following steps: firstly, based on spatial-temporal correlation and physical consistency constraints of multi-source sensor data, carrying out redundancy modeling and credibility evaluation on a key state of a vehicle; then, when it is detected that the sensor is abnormal, real-time compensation and correction of failure observation are achieved through a state reconstruction model driven by redundant data; and further combining a rapid fault identification and virtual sensor switching mechanism to construct a fault-tolerant control strategy for the minimum function demand of the vehicle so as to ensure that the vehicle can still maintain basic driving and safety control capability under the condition that the functions of part of sensors are damaged. According to the invention, the real-time performance of the system is ensured, the safety and robustness of the intelligent driving vehicle in a complex environment and an abnormal condition are obviously improved, and the method is suitable for a multi-sensor fusion intelligent vehicle control system.

The invention relates to the technical field of elderly nursing equipment, and discloses an autonomous bathing nursing device suitable for the elderly with physical inconvenience, which comprises a fixed shell, a fixed seat is slidably connected in the fixed shell, a connecting block is slidably connected in the fixed seat, and a driving cavity and a square notch are formed in the connecting block. A trigger end of a driving assembly is rotationally connected into the driving cavity; the driving assembly comprises a worm, the worm is meshed with a worm gear, the worm gear is fixedly connected to the rotating shaft, cams are fixedly connected to the positions, close to the two ends, of the rotating shaft, and the cams abut against the trigger ends of the wiping assemblies. According to the invention, the horizontal torque of the motor is efficiently converted into rotation power through the worm-worm gear, the self-locking characteristic of the worm-worm gear can effectively prevent accidental inversion in the power transmission process, and the operation stability is ensured; and the cam and the V-shaped connecting rod are matched to enable the wiping assembly to do arc-shaped wiping action, so that stiff friction to the skin of the old people is reduced, and discomfort is reduced.