460results about How to "Reduce speed" patented technology

The invention provides an energy-saving navigation method and system for a combined fleet under intelligent control, and relates to the technical field of data processing, and the method comprises the steps: collecting environment data and ship state data of fleet navigation in real time, carrying out the preprocessing, removing redundant data, obtaining a navigation data set, and obtaining a navigation data set according to the navigation data set; calculating a channel influence value, a sea condition influence value and a wake flow influence value, determining a resistance influence value of each ship according to the values, calculating the required power of each ship, obtaining a required power data set, calculating the compensation power of each ship, analyzing the limitation of the channel on the compensation power of the ships, balancing the distribution of the compensation power among the ships, and obtaining an energy-saving scheme. And the compensation power of each ship is adjusted in real time, the navigation efficiency of the fleet is monitored, execution data are obtained, whether the navigation efficiency reaches preset efficiency or not is analyzed, the resistance influence value of each ship is updated, and a power distribution scheme is adjusted. The propulsive power of the fleet can be intelligently controlled, and energy consumption is saved.

The utility model relates to the technical field of driving modules, and provides an electric curtain driving module aiming at the condition that the output torque of a driving belt pulley, directly driven by a motor, of a traditional electric curtain is limited, the electric curtain driving module comprises a driving box and a power box, and the power box is located at the bottom of the driving box; a driving belt pulley is rotationally connected into the driving box; a driving motor and a gear reducer are arranged in the power box; the output end of the driving motor is in driving connection with the input end of the gear reducer; the input end of the gear reducer is in driving connection with the driving belt pulley through a transmission assembly; the power box is connected with the driving box through a connecting assembly. The effect of improving the output torque of the driving belt wheel is achieved.

The invention relates to the technical field of flood drainage machines, and discloses an intelligent flood drainage robot and a water pump assembly thereof, the water pump assembly comprises a water inlet section, one end of the water inlet section is provided with a water inlet, a drainage pump is arranged in the water inlet section, and a first pressure sensor is arranged between the water inlet and the drainage pump; the water outlet section is connected with the drainage section, a second pressure sensor is arranged on the water outlet section, and a water outlet is formed in the end, opposite to the water inlet section, of the water outlet section; and the first controller is electrically connected to the first pressure sensor, the second pressure sensor and the drainage pump. The first pressure sensor and the second pressure sensor are arranged on the water inlet side and the water outlet side of the drainage pump correspondingly, the water pressure in front of and behind the drainage pump can be accurately monitored in real time in the series use process of the flood drainage robots, and the drainage pump is accurately adjusted to adapt to the drainage flow of the front-section flood drainage robot; safety of fan blades and a motor of the drainage pump is protected, and the service life of the drainage assembly is guaranteed.

The invention discloses a device and method for controlling the speed of a vehicle on an abrupt slope in an off-road environment, and the method comprises the steps: monitoring the slope of a road at a fixed distance in front in real time when a low-speed off-road cruise function is activated in the running process of the vehicle; if the road gradient is greater than the set gradient, determining a steep slope road section, controlling the target vehicle speed to be a set safe vehicle speed based on the road gradient, and adjusting the distribution ratio of front and rear axle driving torque; if the road gradient is smaller than or equal to the set gradient, the vehicle speed is automatically controlled based on cross-country cruise; when the vehicle runs to the abrupt slope road section, the vehicle speed is controlled in different modes based on different positions of the abrupt slope road section where the vehicle runs, and vehicle speed control on the abrupt slope is achieved. The method can assist a driver in changing the vehicle speed and the vehicle driving state in a safe mode, and the situation that the driver feels uncomfortable or uncomfortable in the process is avoided.

The present invention discloses a modular joint of a collaborative robot with a compact structure, which is connected in sequence: a joint housing; a joint output flange; a low-speed wire protection tube connected to the joint output flange; a harmonic reducer connected to the joint output flange and the joint housing; a motor assembly, including a stator and a rotor; a motor shaft connected to the motor rotor, one end of which is connected to the input end of the harmonic reducer; a brake assembly, which is a magnetic friction type, locks when the power is off, and opens when the power is on, and is connected to the motor shaft. Compared with the latch-type brake, it is safer to stop in an emergency and will not bend the stop pin; a motor-end encoder assembly; and a joint-end encoder assembly. The encoder code disc at the motor end of the present invention is concentrically arranged with the encoder code disc at the joint end, and the encoder reading head at the motor end is integrated with the encoder reading head at the joint end, so that the axial space of the joint is compact, the integration is high, and the wiring space is large for easy operation. At the same time, the modular joint of the present invention also has the characteristics of high rigidity and large load-to-weight ratio.

The utility model provides a wind power deflection bearing sealing structure which comprises a first bearing ring, a second bearing ring and a sealing structure, and the sealing structure is arranged between the first bearing ring and the second bearing ring. The sealing structure is a double sealing ring consisting of an inner sealing ring and an outer sealing ring; the inner sealing ring is of a double-lip type sealing structure. The outer sealing ring can prevent the inner sealing ring from being directly exposed in the environment, invasion of soil, dust and sand is avoided, the aging progress of the sealing ring is slowed down, and the service life of the sealing ring is prolonged; the outer seal can improve the sealing performance of the bearing, guarantee the stock of lubricating grease in the bearing, improve the operation stability of the bearing and reduce the maintenance cost.

The invention discloses an oblique flow impeller, a fan and ventilation equipment, the oblique flow impeller comprises a bottom plate, a top plate and a plurality of blades, and the bottom plate is used for being connected with a driving motor; the top plate is provided with an air inlet; an air inlet is formed in the top plate, the multiple blades are connected between the bottom plate and the top plate and arranged around the axis of the air inlet, an air outlet is formed between the bottom plate and the top plate, in the axial direction of the air inlet, the diameters of circumferences defined by the blades are different, and the outer diameter of the bottom plate is smaller than that of the top plate. According to the technical scheme, efficiency can be improved, and noise is reduced.

The invention provides a dynamic driving risk assessment method and system based on DNC and NGBoost-PA-WOE, and the system comprises a database which is used for storing an urban road traffic map, historical traffic accident data and historical traffic violation data, and can automatically update the data; the data acquisition module is used for acquiring vehicle dynamic data and environment characteristics; the data preprocessing and cleaning module is used for preprocessing and cleaning the data; the degree centrality factor (DNC) analysis module is used for calculating a DNC value of a target road node; the evidence weight module is used for calculating WOE values corresponding to the accident rate, the violation rate, the vehicle dynamic data and the environment characteristics of the nodes; and the risk assessment module is used for predicting the risk score of the road node according to the DNC value, the WOE value, the accident rate and the violation rate. According to the method, the NGBoost-PA-WOE model is adopted to predict the risk score of the road node, the model combines the NGBoost algorithm, the FPA and the WOE, and the prediction precision of the risk score can be effectively improved.

The invention discloses an efficient scrap steel crusher, and relates to the technical field of scrap steel crushing. Comprising a mounting frame, and a main crushing roller and an auxiliary crushing roller are rotationally connected into the mounting frame; the mounting shell is fixedly connected to the mounting frame, and a sun gear, a planet carrier, a planet gear and a gear ring which are used for forming a planetary gear train are arranged in the mounting shell; the gear box is mounted on the mounting shell, and an output gear is rotationally connected into the gear box; the mounting cylinder is arranged on the planet carrier and is rotationally connected with the mounting shell; and the detection assembly is arranged on the main crushing roller and is used for detecting the rotating speed difference between the main crushing roller and the mounting cylinder. The rotating speed difference of the main crushing roller and the mounting cylinder is detected, the rotating speed of the main crushing roller and the mounting cylinder is adjusted according to the rotating speed difference, the rotating speed of the main crushing roller is reduced when the load of the main crushing roller is large, the torque of the main crushing roller is increased, the material blocking probability is reduced, and then the waste steel crushing efficiency is improved.

The invention belongs to the technical field of casting molding, and particularly relates to faucet casting molding equipment and a molding method thereof.The faucet casting molding equipment comprises an upper box body and a lower box body, a feeding pipe is arranged at the top of the upper box body, a feeding pipe is arranged on one side of the lower box body, the other end hole of the feeding pipe is formed above the feeding pipe, and a conveying auger is arranged in the feeding pipe; a third platform is fixedly installed in the upper box body, a second platform is rotatably installed at the top end of the third platform, a first platform is rotatably installed at the top end of the second platform, the bottom end of the feeding pipe is located above the second platform, a gap is reserved between the bottom end of the feeding pipe and the second platform, and an elastic blocking net is fixedly installed on the inner wall of the feeding pipe and is in a horn shape. The diameter of the bottom end of the elastic blocking net is larger than that of the top end of the elastic blocking net, one end of the elastic blocking net is fixedly connected with the bottom end of the inner wall of the feeding pipe, and the recycled molding sand can be crushed through cooperative use of the structures, so that the practicability of the molding sand is improved.

The utility model discloses a shoe anti-rollover performance test device, comprising a simulation foot device which comprises a simulation leg model and a simulation foot model, the simulation leg model simulates knee joint motions when a leg treads and lifts up, and the simulation foot model wears a shoe to simulate ankle joint motions when the foot stands or laterally stretches and lifts up; the ground-like device is provided with a treading platform mechanism and a lifting mechanism, the treading platform mechanism is provided with a test platform, and the test platform is provided with a treading plane for simulating the simulation foot mold and bears treading force generated when the simulation foot mold performs lateral pedaling and stretching actions; the lifting mechanism controls the treading platform mechanism to move in the vertical direction so that the sole of the simulation foot mold can make close contact with the testing platform. And a control and data acquisition module. The utility model provides an anti-rollover performance test device for shoes, which can simulate landing angles, impact forces and action time between different legs and feet and the ground, and evaluate the overall anti-rollover performance difference of the shoes under different exercise intensities.

The invention discloses an engine control method and a related device, and relates to the field of engines, an engine is provided with two EGR branches which are respectively connected with a large turbine runner and a small turbine runner, an engine controller determines a corresponding target EGR rate based on target performance parameters of the engine, a small runner EGR valve is controlled to be opened, and the small runner EGR valve is controlled to be closed. If the target EGR rate can be reached by only opening the small-flow-channel EGR valve, outputting a corresponding first target small-flow-channel EGR valve opening degree, and if the opening degree of the small-flow-channel EGR valve reaches the first set maximum opening degree and the corresponding EGR rate does not reach the target EGR rate, controlling the large-flow-channel EGR valve to be opened to reach the target EGR rate, and outputting a corresponding second target small-flow-channel EGR valve opening degree and a target large-flow-channel EGR valve opening degree. Two-way EGR gas taking is achieved by controlling the opening degree of the two-way EGR valve, the EGR rate is improved, meanwhile, the pumping loss and the rotating speed of the supercharger are reduced, and therefore oil consumption and NOx emission are reduced.

The invention discloses a suspended fertilizer production waste gas treatment device, and relates to the technical field of waste gas treatment. The suspended fertilizer production waste gas treatment device comprises a spraying tower shell and further comprises at least one filler assembly, the filler assemblies are arranged in the spraying tower shell in the axial direction, each filler assembly comprises a bottom supporting disc and a top supporting disc located above the bottom supporting disc, and a filler containing space is formed between the bottom supporting disc and the top supporting disc; a plurality of filler balls are stacked in the filler accommodating space; the nozzle is positioned above the top supporting disc and is used for spraying a high-pressure liquid treating agent; the position changing assembly comprises a material pushing steel needle; according to the suspended fertilizer production waste gas treatment device, when a material pushing steel needle rotates, a filler ball in a corresponding area is in a moving state, so that full contact is facilitated; and the use uniformity of each filler ball is improved.

The invention belongs to the technical field of centerless grinding machines, and particularly relates to a high-efficiency numerical control centerless grinding machine and a using method thereof.The high-efficiency numerical control centerless grinding machine comprises a grinding machine body, a grinding assembly and an adjusting assembly, a supporting dust removal assembly is installed between the grinding assembly and the adjusting assembly, and limiting assemblies are installed at the tops of the grinding assembly and the adjusting assembly. The supporting side discs and the supporting bottom disc on the two sides of the top of the supporting box support the bottom of a grinding workpiece, when the grinding wheel grinds the grinding workpiece, the stability of the grinding workpiece is high, and even on the premise that the radial sizes of the grinding workpiece are different, the grinding workpiece can still be supported by adjusting the adjusting roller assembly; and the moving space of the polished workpiece on the supporting dust removal assembly is reduced.

The invention discloses a six-shaft simple electric control speed change clutch sheet type electric driving system which comprises a power input mechanism, a speed change assembly and a two-shaft power output mechanism, and a power input shaft, a speed reduction shaft assembly, a reverse gear shaft mechanism and the two-shaft power output mechanism of the speed change assembly are arranged on the periphery of a main shaft in the circumferential direction. And the structure is simple and reliable, the expansibility is excellent, and various functional modules such as human-controlled reversing, inertial reversing and active upshift and downshift according to real-time power can be flexibly expanded according to actual requirements. The motor can always and efficiently keep working in the current high-efficiency area according to the change of the driving intention, a multi-parameter control strategy with the consciousness and intention of people as priority is achieved, and harmony and unification of people, vehicles, roads and running resistance / running loads are achieved. The important scientific and engineering technology common key problem of traction / driving force-running resistance / load efficient and accurate balance control is solved.

The utility model discloses a feed pump core cladding protection system which comprises a circulating fluidized bed boiler, an outlet of the circulating fluidized bed boiler is communicated with an inlet of a steam turbine, an outlet of the steam turbine is communicated with an inlet of a condensate pump, and an outlet of the condensate pump is respectively communicated with an inlet of a slag cooler and an inlet of a booster pump. An outlet of the slag cooler is communicated with an inlet of the water feeding pump through a low-pressure heater and a deaerator in sequence; the booster pump outlet is communicated with the feed pump inlet; the outlet of the high-pressure heater is communicated with the inlet of the circulating fluidized bed boiler. According to the system, a bypass is additionally arranged beside a pipeline, leading to sealing water of a feed pump, of a condensate pump, a booster pump is additionally arranged on the bypass, and the pressure of condensate entering the feed pump seal is adjusted. The lowest pressure of the outlet of the condensate pump is set, once the pressure is smaller than the minimum pressure required by a sealing system, the booster pump is started immediately, stable condensate pressure is guaranteed, a water pump core bag is prevented from being damaged, and safe operation of a unit is guaranteed.

The invention discloses a mining permanent magnet motor with a braking function, and relates to the technical field of motor equipment, the mining permanent magnet motor comprises a permanent magnet motor shell and a rotating shaft, the tail end of the rotating shaft is connected with a cooling fan, and the mining permanent magnet motor further comprises a braking structure arranged in the permanent magnet motor shell; the braking structure comprises a rotor core, the rotor core is fixed on the outer surface of the rotating shaft, a permanent magnet is embedded in the rotor core, a stator core is installed on the inner wall of the permanent magnet motor shell, a stator winding is installed on the inner wall of the stator core, a first groove is formed in the inner wall of the middle of the permanent magnet motor shell, and a second groove is formed in the inner wall of the middle of the permanent magnet motor shell. A plurality of sets of arc-shaped grooves are formed in the two sides of the first groove, when the friction ring extrudes the second groove, friction force can be generated to reduce the rotating speed of the rotor iron core, meanwhile, when the limiting grooves correspond to the protruding pieces in position, the protruding pieces can be embedded into the inner sides of the limiting grooves to limit rotation of the rotor iron core, and therefore the braking effect is achieved; the occupied space is small, and the load is reduced.

The invention relates to the technical field of ship transmission, in particular to a propeller speed reducer, a ship and a ship control method. The propeller speed reduction device comprises a gear box, a speed reduction unit, a power input unit and a tail transmission execution unit, the speed reduction unit comprises a first-stage speed reduction assembly and a second-stage speed reduction assembly, the second-stage speed reduction assembly comprises a first cylindrical gear and a first face gear, and the first cylindrical gear and the first-stage speed reduction assembly are in coaxial transmission; the axis of the first cylindrical gear and the axis of the first face gear intersect to form an included angle, the first cylindrical gear is connected with the first face gear in a meshed mode, the tooth end face of the first face gear is arranged in a taper mode, the power input unit is connected with the first-stage speed reduction assembly, and the tail transmission execution unit is connected with the first face gear. According to the invention, the condition of any small dip angle of a ship can be met, and a transmission mode of the cylindrical gear and the face gear is adopted, so that the higher speed ratio of the whole machine is realized, the power density is effectively improved, pairing processing is not needed, and the processing and maintenance cost is greatly reduced.

The utility model discloses a wire filling device and a TIG (Tungsten Inert Gas) automatic welding system in the technical field of inert gas welding, and aims to solve the problems of arc breaking, upward combustion, splashing and the like in an arc striking stage in the prior art. The method comprises the steps that the rotating speed of a motor is monitored through a velometer, after the rotating speed of the motor reaches a set threshold value, a motor control unit conducts negative feedback adjustment on the rotating speed of the motor, the rotating speed control unit controls current supply of a power panel to the motor, then the rotating speed of the motor is reduced, and the influence of too high wire filling speed caused by inertia of a wire feeding wheel is counteracted; the wire filling speed at the beginning of the main welding stage is approximately consistent with the set wire filling speed, so that the wire filling speed of a wire feeding wheel is quickly reduced to the set wire filling speed at the main welding stage, namely when the wire filling speed is not in an overshoot state in the arc striking stage, the welding arc striking success rate is high at the moment, and the phenomena of arc striking breaking and arc striking splashing are greatly reduced.

The shutdown control method and system of the wind generating set and the storage medium of the shutdown control method comprise the steps that when it is monitored that a preset type of shutdown fault occurs in the wind generating set, machine side staged power reduction control is carried out according to the power at the fault occurrence time point; in the first preset power reduction working interval, the power of the generator is controlled to be reduced to preset switching power according to a first preset power reduction rate; and in the second preset power reduction working interval, responding to the switching power triggering event, and controlling the power of the generator to be reduced to the cut-out power of the generator from the second preset power reduction rate.

The invention discloses a ship navigation signal lamp with anti-freezing and anti-fog functions, and relates to the technical field of signal lamps, the ship navigation signal lamp comprises a base, the base is fixedly connected with a fixing frame, the fixing frame is fixedly connected with a heat collecting ring, a lamp wick is fixedly connected between the fixing frame and the heat collecting ring, and the fixing frame is fixedly connected with a lampshade. According to the signal lamp, in an environment with relatively low temperature or humidity, the air inlet is automatically and locally closed through the opening and closing plate, and the opening of the air inlet is reduced, so that entering of cold air is reduced; heat generated when the inner lamp wick works is gathered by the heat collecting ring and then sequentially passes through the gap between the lampshade and the heat conducting frame and the gap between the lampshade and the pressurizing ring to be guided to the outer wall of the lampshade in an accelerated mode, the outer wall of the lampshade is prevented from being frozen or condensed fog water while heat dissipation is conducted, a heat source is saved, and meanwhile heat dissipation efficiency is improved. The accelerated hot air flow can blow water flow on the lampshade wall downwards, the water flow is accelerated to flow downwards, and the light transmission of the lampshade is guaranteed.

The invention relates to the technical field of electric hoists, in particular to an anti-overload protection electric hoist. According to the anti-overload protection electric hoist, after locking of the brake is relieved, the descending speed of a heavy object can be reduced, manpower is saved, and the operation safety and efficiency are improved. An overload protection electric hoist comprises an electric hoist body, a first servo motor, a load increasing mechanism and the like, the right side of the lower portion of the electric hoist body is connected with the first servo motor, and the load increasing mechanism capable of detecting the load weight is arranged on the electric hoist body. When a heavy object needs to be lowered, the brake is removed, then the winding drum and the first friction disc rotate, the rotating speed of the first friction disc is reduced through friction force between the second friction disc and the first friction disc, then the rotating speed of the winding drum is reduced, the heavy object is lowered slowly, the descending speed of the heavy object can be reduced after locking of the brake is removed, and manpower is saved; and the operation safety and efficiency are improved.

The invention discloses a flexible screw drilling tool for ultra-short radius well drilling. The technical problems that an ultra-short radius flexible drilling tool is low in well drilling torque transmission efficiency, the well drilling track is difficult to adjust, and a conventional screw drilling tool is high in rigidity and is difficult to descend into an ultra-short radius well are solved. The device comprises an upper connector, a power part, a lower connector, a transmission short section and a drill bit, the power part comprises a stator shell, a stator bush and a screw rotor, the stator shell can be bent, the screw rotor is in conjugate fit with the stator bush, the stator bush and the screw rotor are made of bendable materials, a threaded flow channel is formed in the inner side wall of the stator bush, and the threaded flow channel is communicated with the lower connector. The threaded flow channel is matched with threads on the screw rotor, and when drilling fluid flows through the threaded flow channel, the screw rotor does planetary motion in the circumferential direction of the stator bush under the drilling fluid pressure difference and the conjugate action of the stator bush and the screw rotor, and the drill bit is made to rotate through the transmission short section. The torque transmission efficiency can be improved, and the drilling track can be adjusted.

According to the compressor starting method, the control system, the compressor and the air conditioner, before the compressor enters closed-loop starting, whether inertia rotation exists in a rotor or not is judged, a control signal is generated under the condition that inertia rotation exists, and an inversion module is controlled to achieve short circuit of a three-phase winding of the compressor; the rotating speed of the rotor is effectively reduced; and then, when the rotating speed is lower than a preset threshold value, a closed-loop starting strategy is executed to complete starting. According to the method, by adding the braking step in the inertia rotation state, the problem of inaccurate rotor position estimation caused by the high rotation speed is avoided, it is ensured that the compressor can be reliably switched to closed-loop operation in the low-speed state, the technical problem of starting failure in the inertia low-speed rotation scene of the rotor is effectively solved, and the reliability of the compressor is improved. And the starting success rate and the overall operation reliability of the compressor are improved.

The invention discloses a refrigeration method, a defrosting method, a controller and an air conditioning system.The refrigeration method comprises the steps that in a refrigeration mode, a refrigerant sequentially passes through an expansion valve, a refrigerant heat dissipation assembly and a one-way throttle valve, so that the refrigerant throttled by the expansion valve passes through the refrigerant heat dissipation assembly and then reaches the one-way throttle valve; the refrigerant temperature in the refrigerant heat dissipation assembly can be lower, the current limit value of the main control board can be improved, the maximum operation frequency of the compressor can be improved in combination with opening control of the expansion valve, high-temperature refrigeration with better performance is achieved, and the applicable temperature range of the high-temperature refrigeration is widened. According to the defrosting method, the opening degree of an expansion valve is increased after the rotating speed of an indoor fan is reduced and the operation frequency of a compressor is reduced, the temperature of a liquid refrigerant staying in an indoor heat exchanger is increased, and the liquid refrigerant is rapidly transferred to an outdoor heat exchanger, so that the outdoor heat exchanger is defrosted; and meanwhile, the problem that the indoor heat exchanger generates refrigerant sound after entering the defrosting mode is solved.

The invention relates to the technical field of robot human joints, in particular to a robot joint reducer and a joint device which are high in reduction ratio, compact in design and quick in response. Comprising a shell which is independently and fixedly arranged; the planetary gear train is arranged in the shell and comprises an inner gear ring, a sun gear, a planet gear and a planet carrier, the inner gear ring is rotationally connected with the shell, the sun gear is coaxially arranged on the inner side of the inner gear ring, the planet gear is meshed with the inner gear ring and the sun gear, the planet carrier is rotationally connected with the planet gear, and the sun gear drives the planet carrier through the planet gear; the input shaft is arranged on the side, away from the planet carrier, of the sun gear, one end is coaxially and fixedly connected with the sun gear, and the other end penetrates through the shell and extends to the outside; the output shaft is arranged on the side, away from the planet wheel, of the planet carrier, one end is fixedly connected with the planet carrier, and the other end penetrates through the shell and extends to the outside; the transmission mechanism is in transmission connection with the input shaft and the inner gear ring, and the input shaft drives the inner gear ring through the transmission mechanism.

The invention relates to the technical field of air purification and ventilation, and discloses a circulation control method and system for a pressure difference channel of a clean laboratory and a storage medium, the method is based on a clean conveying line and a dirty conveying line, each line comprises a conveying channel, a buffer cabin and a sealing door, and an air feeder and an exhaust fan are arranged in the channels respectively. The rotating speed and the working time of the fan are adjusted according to the volume and the number of the flow devices by obtaining the flow instruction, and the conveying line can be disinfected according to the cleaning instruction. According to the method, pollution can be effectively avoided, circulation requirements can be accurately matched, the conveying line is regularly cleaned, the operation quality of a clean laboratory is comprehensively guaranteed, and it is ensured that the requirement for high cleanliness of an experiment space is met.

The present invention belongs to the field of motor heat dissipation, and specifically relates to a semi-superconducting motor adaptive heat dissipation control method and system, which aims to solve the problems of insufficient real-time performance, complex models, high difficulty in optimizing control strategies, and poor adaptability in the prior art. The present invention includes: obtaining real-time temperature data of the motor; inputting the real-time temperature data and motor load data as input data into a fuzzy control algorithm optimized based on a genetic algorithm; the fuzzy control algorithm calculates control parameters based on fuzzy rules, and adjusts the speed of the motor fan and the heat dissipation area of ​​the radiator based on the control parameters. The present invention can flexibly change the search strategy of the genetic algorithm according to the individual's fitness, improve the search efficiency and optimization results, can accurately control and adapt to a variety of systems, increase the service life of the motor, and simplify design and debugging.

The invention provides a vertical multilayer heating disc sludge drying machine, which comprises an outer cylinder, a main shaft heating disc assembly, a steam inlet assembly, a steam outlet assembly, a material distribution pipe assembly, a scraper assembly, a driver, a speed reducing mechanism and the like, the material distributing pipe assembly and the scraper assembly rotate at a lower rotating speed under the transmission of the driving machine and the speed reducing mechanism, and are respectively fixed on the two sides of the outer cylinder through connecting devices; the main shaft heating disc assembly comprises a main shaft, a core pipe, a shaft sleeve and a heating disc, the upper end and the lower end of the main shaft are provided with a steam inlet assembly and a steam outlet assembly respectively, the material distribution pipe assembly comprises a material distribution pipe, a material distribution pipe sleeve and a rotating handle, and the material distribution pipe is in clearance fit with the material distribution pipe sleeve. The scraper assembly comprises a plurality of scrapers, a scraper connecting shaft, a connector and a scraper support. The drying machine is small in occupied area, the water content is easy to control, sludge and the heating disc are not easy to adhere, and the efficiency is high.

The invention discloses a fan assembly and a water heater, and relates to the technical field of household appliances, the fan assembly comprises a volute and a wind wheel, the volute comprises a volute tongue, a first end wall, a second end wall and a circumferential side wall, the first end wall and the second end wall are arranged at the two opposite ends of the circumferential side wall in the axial direction, the first end wall is provided with an air inlet, and the second end wall is provided with an air outlet; the volute tongue is connected with one end of the circumferential side wall, the wind wheel is arranged in the volute, a connecting line from the center of the wind wheel to the connecting position of the volute tongue and the circumferential side wall serves as a reference line, an included angle between a ray from the center of the wind wheel to the circumferential contour of the wind wheel and the reference line serves as a reference included angle, and the included angle ranges from 75 degrees to 270 degrees. The ratio of the length of the circumferential side wall to the center of the wind wheel to the radius of the wind wheel is gradually increased and does not exceed 1.8. According to the volute, the size of the circumferential side wall of the volute is reasonably set by associating the size relation between the length of the circumferential side wall and the center of the wind wheel and the radius of the wind wheel, and occupied space is reduced.