30results about How to "Guaranteed control reliability" patented technology

The invention discloses a communication control method and apparatus for an unmanned aerial vehicle. The method comprises the steps of: detecting whether network parameters corresponding to a current network meet preset conditions; when the network parameters meet the preset conditions, generating a network switching request of a communication network; sending the network switching request to a control terminal; and if receiving a switching confirmation instruction returned by the control terminal in a preset time period, according to the switching confirmation instruction, switching the current network into a target network. Namely, when the unmanned aerial vehicle detects that the current network is interfered, the unmanned aerial vehicle generates the communication network switching request and fulfills the communication network switching aim by communication with the control terminal, so that the problem that the unmanned aerial vehicle is out of control due to interference to the communication network can be avoided, thereby improving control stability and safety of the unmanned aerial vehicle.

The invention relates to the household electrical appliance field, and discloses a user client, a household electrical appliance, and a control method thereof. The control method comprises steps that a type of a network used for controlling a device is determined; following items are carried out by aiming at different network types based on corresponding communication protocols: a request of subscribing to the state of the device is transmitted; the state information of the device responding to the subscription request is received; an instruction of controlling the device is transmitted based on the state information. A wide area network or a local area network is used to control the device according to a use condition, and the reliability of the control is guaranteed, and the efficiency of the control is improved.

The invention discloses an intelligent tension stringing monitoring device for an overhead electric transmission line, which comprises a data wireless receiving and processing unit, a pulley wireless angular transducer, a traction measuring device and a tension measuring device. The pulley wireless angular transducer is used for measuring the angle of a conducting wire and a horizontal plane at apulley on a rod tower; the traction measuring device is used for measuring the traction of a tractive rope of the electric transmission line; the tension measuring device is used for measuring the tension of an outlet conducting wire of a tensioning machine; and the pulley wireless angular transducer, the traction measuring device and the tension measuring device are all connected with the data wireless receiving and processing unit wirelessly through a wireless receiving-transmitting device. The data wireless receiving and processing unit can receive the information of the wireless angular transducer, the tension information of the tension measuring device and the traction information of the traction measuring device, and further draws a sag curve of the conducting wire according to the information and the parameters of a know ground and a spanning object, so as to monitor the sags of all shelves or all important shelves in real time.

The invention relates to a true tri-axial hydraulic fracture test machine which comprises a confining pressure system, an injection system and a true tri-axial test stand, wherein the injection system comprises a fracturing solution container I, a fracturing solution container II and a piston container, and a stirring mechanism is mounted in the fracturing solution container II. A test method comprises the following steps: injecting clear water and an additive into the fracturing solution container II according to a certain proportion, and starting the stirring mechanism to stir; injecting a fracturing solution into a cavity body above a piston plate in the piston container by utilizing pressure; respectively applying confining pressures onto three axial directions of a downhole rock core simultaneously through three high-pressure advection pumps; draining into a cavity body under the piston plate in the piston container through a constant-pressure constant-speed plunger pump I and / or a constant-pressure constant-speed plunger pump II; injecting the fracturing solution into the rock core to start to fracture and taking out the downhole rock core after the end of fracturing to observe fracture expansion condition. The true tri-axial hydraulic fracture test machine provided by the invention has the benefits that the technical scheme is simple and easy to understand, the operation is convenient and fast, the unified control of the confining pressure system and the injection system can be realized, and the fracturing solution is convenient to replace.

The invention provides a photoelectric feedback type carpentry milling head device with double swing angles. The photoelectric feedback type carpentry milling head device with the double swing angles comprises a supporting seat, a main shell, an electric spindle connecting plate, an electric spindle, a shaft C driving mechanism, a shaft A driving mechanism and two rotary photoelectric encoders, wherein the supporting seat is provided with the shaft C driving mechanism which comprises a servo motor and a transmission mechanism, and an output shaft of the shaft C driving mechanism is connected with the main shell; the main shell is provided with the shaft A driving mechanism which comprises a servo motor and a transmission mechanism, and an output shaft of the shaft A driving mechanism is connected with the electric spindle through the electric spindle connecting plate; the shaft C and shaft A driving mechanisms are provided with a travel switch respectively, a positioning block is arranged on a limit belt wheel which is connected to the output shafts of the driving mechanisms, and a corresponding limit switch is arranged on the supporting seat or the main shell; and grating discs in the rotary photoelectric encoders are arranged on the output shafts, and a photoelectric detector and a light source are arranged on the supporting seat or the main shell. The photoelectric feedback type carpentry milling head device with the double swing angles can realize polyhedron carving and milling processing during the processing of wood and artificial boards, and is suitable for carpentry high-accuracy and high-speed multi-axle numerically-controlled machine tool.

The invention relates to an embedded proportional controller, which comprises a housing and a circuit board arranged therein. A circuit structure on the circuit board comprises an embedded microprocessor, a peripheral circuit connected with the embedded microprocessor, and a power supply module which supplies power for the embedded microprocessor and the peripheral circuit, wherein, the embedded microprocessor comprises an A / D converting unit, a memory and PWM output control unit, a digital quantity input and output unit, a logic control unit and an interface control unit, the peripheral circuit comprises an input signal conditioning circuit, a power amplification circuit, a display unit, a feedback indication circuit, an RS232 interface circuit, a keyboard entry circuit and a power supply module. An voltage input terminal and a current input terminal are connected with the A / D converting unit via the input signal conditioning circuit, the power amplification circuit is connected with the PWM output control unit, and the display circuit is connected with the digital quantity input and output unit. The embedded proportional controller is convenient in signal processing and strong in anti-interference capability, and can communicate with an upper computer. By the invention, only software parameters need to be changed corresponding to different proportioning valves, allowing no change to hardware circuit.

The invention provides an aircraft surface defect scale controlling method capable of reducing the influence on the flow transition. The aircraft surface defect scale controlling method capable of reducing the influence on the flow transition comprises the steps that first, a theoretical analysis method or a ground test method is used for performing a flow transition study on an aircraft, and a constraint range of the surface defect scale meeting the requirement that the boundary layer transition is not affected is obtained; then the joint simulation analysis of aerodynamic heating, a structural temperature field and a deformation field is carried out on the section where the defect is generated, and the thermal deformation data of each section where the defect is generated during the flight is extracted from the structural deformation calculation result; the strategy of initial defect scale offsetting the thermal deformation is adopted, and based on the constraint range and thermal deformation data, the initial defect scale to be processed is designed to ensure that the actual defect scale meets the constraint range during the flight. The aircraft surface defect scale can be reasonably and effectively controlled, the possibility of inducing surface transition in advance is reduced, and the reliable operation of an aircraft thermal protection system is ensured.

The invention provides a control framework and device for a hybrid electric vehicle. Through control over universal gears, an engine and the torque, in various possible gear and torque distribution combinations, the engine is made to work at the working condition point of the lowest fuel consumption rate in real time as much as possible. Through reasonable design of module functions, the calling relationship among modules and the data flow direction among the modules, the control reliability is guaranteed.

The invention provides a rotary speed control apparatus. A centrifuging assembly is arranged on a connecting assembly; a connecting rod assembly is connected with the centrifuging assembly; the connecting rod assembly is connected with a dynamic inductive magnetic coil of an electromagnetic induction assembly; the dynamic inductive magnetic coil and a fixed inductive magnetic coil of the electromagnetic induction assembly form an inductive magnetic coil; the fixed inductive magnetic coil is connected with a power supply; and the dynamic inductive magnetic coil is connected with a signal processor. The rotary speed control apparatus provided by the invention adopts mechanical structural design, so that speed detection and control reliability is ensured; centrifuging force of a centrifuging claw is utilized and the centrifuging force is amplified through the connecting rod assembly and is converted into electromagnetic induction; rotary speed detection and control is realized through the distance of the two magnetic inductive coils in electromagnetic induction; the centrifuging claw disclosed in the invention adopts a hollow structure, and a high-density sphere at the centrifuging end is adopted in an auxiliary manner, so that centrifuging force embodiment in high-speed change can be improved; and in addition, the rotary speed control apparatus is creative and reasonable in structure and particularly suitable for rotary speed detection and control in severe environments.

The invention discloses an insulated conveying system. The insulated conveying system comprises a conveying component, an upper heating device and a lower heating device, wherein an insulated space is formed between the upper heating device and the lower heating device; and the conveying component penetrates through the insulated space. The insulated conveying system disclosed by the invention has the beneficial effects that by adoption of the technical scheme, active heating is carried out from top to bottom simultaneously, so that materials on the conveying component can be kept at a certain temperature; and due to simultaneous heating from top to bottom, the heating effect is better; and the production quality of products is guaranteed.

The invention discloses a farmland irrigation system, which comprises electromagnetic valves, capillary pipes and main pipeline equipment, wherein the electromagnetic valves are respectively connected with the capillary pipes and the main pipeline, in one piece of farmland, one end opening of each capillary pipe of the four capillary pipes is respectively provided with one electromagnetic valve, one end of the main pipeline is connected with one electromagnetic valve, and the other end of the main pipeline is respectively connected with the electromagnetic valves of the four capillary pipes. The farmland irrigation system has the characteristics that the energy consumption is low, and the control is easy. The farmland irrigation system is suitable for being popularized and applied.

The invention relates to a gear shifting device for multi-speed transmission of electric vehicles. The gear shifting device for a multi-speed transmission for an electric vehicle includes a shifting unit controlling gear shifting by a torque of an actuator, and a parking unit controlling a parking state by the torque of the actuator. In particular, the actuator includes a control motor transmitting a driving torque to a first driven gear and a second driven gear through a drive gear externally gear-meshed with the driven gears, and the shifting unit includes: a shift fork slidably mounted on afork rail and activating the gear shifting; a profile drum connected to the first driven gear externally engaged with the drive gear, and having a profile groove formed along an exterior circumference of the profile drum; and a shift lug integrally formed with the shift fork and coupled with the profile groove.

The invention relates to a bidirectional isolation type energy conversion system. The system comprises a three-phase PWM rectification circuit and a cascaded bidirectional active bridge DC / DC conversion circuit. The bidirectional active bridge DC / DC conversion circuit comprises a high-voltage side H bridge, an HSLP high-frequency transformer circuit and a low-voltage side H bridge. One side of thehigh-voltage side H bridge is connected with the three-phase PWM rectifying circuit, and the other side of the high-voltage side H bridge is connected with the high-voltage side of the HSLP high-frequency transformer circuit; and the low-voltage side of the HSLP high-frequency transformer circuit is connected with the low-voltage side H bridge. The system can achieve AC-DC bidirectional conversion, is simple in design, and achieves the lightweight design of equipment. Meanwhile, the invention further provides a corresponding control method. A SVPWM and PWM hybrid control mode is adopted, a three-phase PWM rectification circuit adopts SVPWM control, and a bidirectional active bridge DC / DC conversion circuit adopts PWM control, so that the control stability of the system is improved, and the control reliability of the system can be kept in a voltage full-range conversion mode in the hybrid control mode.

The invention discloses a controller control method, device, storage medium and controller. The method includes: determining the current state of the controller; the current state includes: the current top surface and / or the current top surface Action mode: according to the pre-configured correspondence between the setting state and the setting control mode, determine the setting control mode corresponding to the setting state that is the same as the current state in the corresponding relationship as the current control mode; set the The control command of the current control mode is sent to the target control device. The solution of the present invention can solve the problem of cumbersome operation of the remote controller to control the temperature and humidity of the air conditioner, and achieve the effect of improving the convenience of operation.

The invention relates to a shifting device for a multi-speed transmission of an electric vehicle, which includes a shifting unit and a parking unit, the shifting unit controls shifting through the torque of the actuator, and the parking unit controls the shifting through the torque of the actuator Control the parking state. Specifically, the actuator includes a control motor that transmits drive torque to the first driven gear and the second driven gear through a drive gear that is externally meshed with the driven gear, and the shift unit includes: a shift fork that slidably mounted on the fork rail and actuating shifting; a profile roller connected to a first driven gear externally meshing with the drive gear and having a profile groove formed along the outer periphery of the profile roller; and a shift guide block, It is integrally formed with the shift fork and is coupled with the contoured groove.

The invention provides a control framework and device for a hybrid electric vehicle. Through control over universal gears, an engine and the torque, in various possible gear and torque distribution combinations, the engine is made to work at the working condition point of the lowest fuel consumption rate in real time as much as possible. Through reasonable design of module functions, the calling relationship among modules and the data flow direction among the modules, the control reliability is guaranteed.

This invention provides a superfluous solenoid-drive device of the diesel-fuel oil pump rack. The device includes the hard surface and the executing agency in it, the inductive element, the locating guide mechanism. The executing agency includes the spigot shaft and the gag bit together with the loop outside the spigot shaft. The inductive element includes the sensor, the connected pressure pad and the attached spring of the sensor. The locating guide mechanism includes the positioning spring, the joint lever of the positioning spring and the steering bar. The loop mentioned is double winding and the sensors of the inductive element include two linear movement sensors, sensing lever and the joint lever of the sensor. This invention makes sure the rack drive device of the diesel-fuel oil pump can continue working through another loop and sensor when the single loop and sensor are broken. Meanwhile, it guarantees the reliability of the diesel-fuel machine and satisfies the special demand of the high-pressure oil pump towards the wire-drive device.

The invention discloses an intelligent hay mower. The intelligent hay mower comprises a machine shell; the moving assembly is used for driving the intelligent mower to move; the cutting device comprises a cutterhead assembly provided with a cutterhead, a blade assembly movably connected to the cutterhead assembly, a connecting assembly used for connecting the blade assembly and the cutterhead assembly, and a cutting motor used for driving the cutterhead assembly to rotate; the blade assembly comprises a blade provided with a cutting edge part, when the cutting motor does not drive the cutter head to rotate, the blade is in a first state, and when the blade is in the first state, at least part of the projection of the cutting edge part in the horizontal direction is overlapped with the projection of the cutter head in the horizontal direction; the connecting assembly comprises a return part, the return part has an initial state and a deformation state, when the return part is in the deformation state, the return part can generate return force enabling the return part to return to the initial state, one end of the return part is connected with the cutterhead assembly, and the other end of the return part is connected with the blade assembly. The intelligent mower provided by the invention has relatively high safety.

The invention provides an intelligent control method and device for the sensitivity of an automatic ball valve sensing system. The method comprises the steps: obtaining first pipeline distribution diagram information of a first factory; obtaining first ball valve information and second ball valve information according to the first pipeline distribution diagram information; obtaining first fluid information of the first factory; obtaining first physical attribute information of first fluid; obtaining first fluid pressure information, first fluid speed information, second fluid pressure information and second fluid speed information; obtaining a first corrosion degree of a first ball valve; obtaining a first preset corrosion degree; when the first corrosion degree is within a first preset corrosion degree range, obtaining a second corrosion degree of a second ball valve; judging whether the second corrosion degree meets a first preset condition or not; and if not, obtaining first flow adjusting information, and adjusting the first fluid flux of the first ball valve and the second fluid flux of the second ball valve through an intelligent control terminal, so that the technical effect of improving the sensitivity of the ball valve sensing system is achieved.

The invention discloses an intelligent tension stringing monitoring device for an overhead electric transmission line, which comprises a data wireless receiving and processing unit, a pulley wireless angular transducer, a traction measuring device and a tension measuring device. The pulley wireless angular transducer is used for measuring the angle of a conducting wire and a horizontal plane at apulley on a rod tower; the traction measuring device is used for measuring the traction of a tractive rope of the electric transmission line; the tension measuring device is used for measuring the tension of an outlet conducting wire of a tensioning machine; and the pulley wireless angular transducer, the traction measuring device and the tension measuring device are all connected with the data wireless receiving and processing unit wirelessly through a wireless receiving-transmitting device. The data wireless receiving and processing unit can receive the information of the wireless angular transducer, the tension information of the tension measuring device and the traction information of the traction measuring device, and further draws a sag curve of the conducting wire according to the information and the parameters of a know ground and a spanning object, so as to monitor the sags of all shelves or all important shelves in real time.

The invention relates to a water spraying control system of an automobile water spraying windscreen wiper. The water spraying control system comprises a windscreen wiper motor, a washing pump, a first contact, a second contact, a third contact, a vehicle body controller and a relay, wherein an insulating disc is fixed to a motor shaft of the windscreen wiper motor in the circumferential direction, a current-conducting plate is arranged on the insulating disc and is in a circular arc shape concentric with the insulating disc, the central angle of the current-conducting plate is smaller than or equal to 180 degrees, the front end of the conductive plate is in contact with the first contact, the second contact and the third contact, one end of the washing pump is electrically connected with a movable contact of the relay, the other end of the washing pump is electrically connected with a negative electrode of a vehicle body power supply, a first static contact of the relay is connected with a common ground, a second static contact and a power supply end of the relay are electrically connected with a positive electrode of the vehicle body power supply, a signal control end of the relay is electrically connected with a control signal output end of the vehicle body controller, the first contact is electrically connected with a reset signal end of the vehicle body controller, the second contact is electrically connected with a negative electrode of the vehicle body power supply, and the third contact is electrically connected with a control signal input end of the automobile body controller.

The invention provides a photoelectric feedback type carpentry milling head device with double swing angles. The photoelectric feedback type carpentry milling head device with the double swing angles comprises a supporting seat, a main shell, an electric spindle connecting plate, an electric spindle, a shaft C driving mechanism, a shaft A driving mechanism and two rotary photoelectric encoders, wherein the supporting seat is provided with the shaft C driving mechanism which comprises a servo motor and a transmission mechanism, and an output shaft of the shaft C driving mechanism is connected with the main shell; the main shell is provided with the shaft A driving mechanism which comprises a servo motor and a transmission mechanism, and an output shaft of the shaft A driving mechanism is connected with the electric spindle through the electric spindle connecting plate; the shaft C and shaft A driving mechanisms are provided with a travel switch respectively, a positioning block is arranged on a limit belt wheel which is connected to the output shafts of the driving mechanisms, and a corresponding limit switch is arranged on the supporting seat or the main shell; and grating discs in the rotary photoelectric encoders are arranged on the output shafts, and a photoelectric detector and a light source are arranged on the supporting seat or the main shell. The photoelectric feedbacktype carpentry milling head device with the double swing angles can realize polyhedron carving and milling processing during the processing of wood and artificial boards, and is suitable for carpentry high-accuracy and high-speed multi-axle numerically-controlled machine tool.

The invention provides a hydraulic control system and a road sweeper. The hydraulic control system comprises a first oil cylinder structure and a second oil cylinder structure, wherein the first oil cylinder structure is in driving connection with a sweeping mechanism; the second oil cylinder structure is connected in series with the first oil cylinder structure and is in driving connection with the sweeping mechanism; wherein the sweeping mechanism has a storage position and a working position. When hydraulic oil flows from the first oil cylinder structure to the second oil cylinder structure, the first oil cylinder structure and the second oil cylinder structure drive the sweeping mechanism to be switched from the storage position to the working position; and when hydraulic oil flows from the second oil cylinder structure to the first oil cylinder structure, the first oil cylinder structure and the second oil cylinder structure drive the sweeping mechanism to be switched to the storage position from the working position. The invention solves the problems that in the prior art, the electric control mode of a control system of a road sweeper is complex, the number of electric control elements is large, and consequently the number of places with faults is large.

The invention discloses an automatic air supplement system and air supplement method for an oil pressure device of a hydropower station. A pressure and pressure difference transmitter is used for measuring and processing pressure and oil level parameters of a pressure oil tank, a traditional contact pressure meter or a mechanical pressure relay and a float annunciator which are adjusted difficultly and fatigued and damaged easily are replaced, and accordingly, pressure and oil level parameters of the pressure oil tank can be measured reliably and continuously. A programmable logic controller and peripheral apparatuses serve as a measuring and control center of the oil pressure device, the traditional relay logic control is changed into intelligent computer program control, and accordingly, control of various working conditions and processing and transmission of information of the oil pressure device can be completed automatically and reliably, and a real automatic air supplement function based on reliable measuring of pressure and oil levels of the pressure oil tank can be implemented.

A brushless direct current motor control method based on RISC-V. An RISC-V core chip is connected to a motor controller of a brushless direct current motor, and the RISC-V core chip is in butt joint with a motor control system corresponding to the motor controller. The RISC-V core chip is used to acquire working data of the brushless direct current motor, and the working data is uploaded to different motor operation function programs; analyzing and processing the working data through a motor operation function program to obtain a corresponding motor working state analysis result; and finally, according to a motor working state analysis result, a corresponding control instruction is sent to the brushless direct current motor, and the working state of the brushless direct current motor is adjusted. According to the control method, the RISC-V core chip is connected into the motor controller of the brushless direct current motor, and the RISC-V core chip can be used for transplanting an operating system, so that different functional programs of the brushless direct current motor can be conveniently operated, and the compatibility of the brushless direct current motor to the different functional programs is improved.

The invention discloses a control method of a temperature-regulating unit and relates to the technical field of a temperature-regulating unit. The present invention includes the following steps: step 1, select the weak current control part or the strong current control part; if the weak current control part is selected, perform step 2; if the strong current control part is selected, perform step 3; step 2, press the switch key, and the device starts Power on, the electric control board enters the standby state, the circulating fan M3 starts to work, the unit enters the automatic mode, and according to the set temperature point T S Operate according to the requirements of the user and use, and operate in several states such as automatic cooling operation mode, automatic heating operation mode, rapid mode and ventilation mode; step 3, the electric control panel and the operation panel stop power supply, and select the stop mode or cooling mode or heating mode for single control. The present invention can meet the requirements of strict environmental adaptability and high reliability by designing three modes of weak current local control, weak current remote control and strong current control, and is suitable for popularization and application.