173results about How to "Reduce control complexity" patented technology

The invention relates to the technical field of light source driving control, and discloses an area array type LED light source driving control method, device and equipment. The method comprises the following steps: constructing an upper-layer display control subsystem and a lower-layer drive control subsystem of the area array type LED display system, and collecting a multi-dimensional state data set; performing N-step prediction optimization calculation and brightness uniformity constraint calculation to obtain an optimal control sequence of the LED unit; carrying out extended state observer processing to obtain an LED unit compensation control quantity; compensation area construction and area brightness compensation analysis are carried out, and LED unit area compensation parameters are obtained; performing multi-stage PWM period division and modulation calculation to obtain an LED unit driving control signal; and performing consistency constraint calculation and gradient optimization calculation to obtain global display control parameters of the area array type LED display system, so that smooth transition between the sub-area control units is realized, and the overall display effect of the large-size display system is ensured.

The invention discloses a photovoltaic coupling hydrogen production power supply device and system and a control method thereof.The device comprises a first power supply module and a second power supply module, the input end of the first power supply module is connected with a direct-current bus of a photovoltaic system, and the output end of the first power supply module is connected with a hydrogen production electrolytic bath; the input end of the first power module is further connected with an energy storage system or a power generation system through the second power module, and the first power module is used for being connected with direct current provided by a direct current bus of a photovoltaic system to conduct direct current conversion so as to supply energy to a hydrogen production electrolytic cell. And the second power supply module is used for converting the electric energy accessed to the energy storage system or the power generation system so as to provide supplementary direct current electric energy for the first power supply module, or returning the redundant electric energy output by the accessed photovoltaic system to the energy storage system or the power generation system. The system has the advantages of being simple in structure, low in cost, high in stability and efficiency, low in control complexity, high in flexibility and the like.

The invention discloses a bridge inspection method based on image recognition, and relates to the technical field of bridge inspection, and the method comprises the steps: obtaining the geodetic coordinate data of a target bridge, and obtaining the space rectangular coordinate data of the target bridge through coordinate system conversion; and performing first route planning to obtain a preliminary inspection route, commanding the unmanned aerial vehicle to perform image acquisition on the target bridge according to the preliminary inspection route to obtain a first image set, and classifying the first image set through the first machine learning model to obtain a bridge key part classification result. Performing second route planning and third route planning based on the bridge key part classification result to obtain a formal inspection route; commanding the unmanned aerial vehicle to perform flight inspection according to the formal inspection route, performing real-time adjustment through a safety potential field algorithm to obtain an updated inspection route, and completing inspection shooting to obtain a second image set. And performing defect detection on the second image set through a second machine learning model to obtain a bridge defect identification result, and completing bridge inspection.

The invention relates to the technical field of power electronics, in particular to an energy storage converter high-voltage ride-through control method, which comprises the following steps: acquiring a direct-current voltage value of an energy storage side and an alternating-current voltage value of a power grid side; judging whether the AC voltage value reaches a preset threshold value or not; if yes, determining a target state according to a comparison relationship between the AC voltage value and the DC voltage value; acquiring a voltage sampling value and an alternating current sampling value; based on a PI feedback control algorithm and coordinate transformation, generating and outputting a modulation signal according to the voltage sampling value and the alternating current sampling value; and controlling the energy storage converter to operate according to the modulation signal. According to the energy storage converter high-voltage ride-through control method provided by the invention, high-voltage fault ride-through is realized under the condition that additional circuits such as a DC chopper are not added, and the production hardware cost and the control complexity can be reduced.

The invention discloses a water-air cross-medium aircraft. The water-air cross-medium aircraft comprises a driving device; a plurality of rotors; the rotor wings comprise underwater propellers and aerial propellers; one end of the underwater paddle is connected with the driving device, and the other end is connected with the aerial paddle; the air propeller can rotate relative to the underwater propeller so as to be in an unfolded state coaxial with the underwater propeller when sailing in the air and in a folded state inclined relative to the underwater propeller when sailing underwater. The underwater propellers and the air propellers are integrated together to form the rotor wing, so that the overall layout of the rotor wing is more compact, shared driving can be achieved, the rotor wing serves the air propellers and the underwater propellers, power transmission is more direct and efficient, energy loss caused by an extra transmission device is reduced, and therefore the underwater and air high-speed cruise is achieved while the energy consumption is reduced. And the size, the weight and the control complexity of the propulsion system are reduced.

The invention discloses a high-frequency wireless battery charging system based on trajectory optimization and matching network integration and a design method, and relates to the field of high-frequency wireless power transmission. The problems that in the prior art, monitoring of a battery charging curve can be achieved only by combining with large adjustment of input voltage, but components are various, control, detection and regulation schemes are generally complex, and the original intention of high-frequency miniaturization design is deviated to a certain extent are solved. According to the system, a T-type IMN network is constructed, the T-type IMN network comprises an XT1 impedance and an XT2 impedance, the XT1 impedance comprises an LC1 and an LV1, the XT1 impedance in the T-type IMN network is integrated with an output filtering resonant inductor L0 of a power amplifier PA, the XT2 impedance comprises an LC2 and a CV2, the XT2 impedance is integrated with a coil series capacitor Ctx, and residual capacitors in the T-type IMN network are used for device multiplexing. The method is also suitable for the field of change design of dual-mode impedance tracks.

The utility model relates to the technical field of nicosulfuron preparation, and discloses a nicosulfuron recrystallization stirring device, which comprises a reaction kettle and a servo motor fixedly arranged at the top of the reaction kettle, the output end of the servo motor is fixedly connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with piston cylinders at equal intervals, and the piston cylinders are fixedly connected with the reaction kettle. And a piston rod is slidably connected into the piston barrel in a sealed mode, a stirring plate is fixedly connected to the end face of the piston rod, and a driving assembly is installed in the rotating shaft. Through the arrangement of the driving assembly, when the servo motor drives the rotating shaft to rotate in the reaction kettle, the stirring plate axially rotates in the reaction kettle, the stirring plate transversely slides in the reaction kettle in a reciprocating manner, and the stirring radius is changed at any time, so that a local retention area in a solution can be broken, and dead angles are reduced; the mixing uniformity is further enhanced, so that nicosulfuron crystals can be uniformly distributed in the solution, the crystals are prevented from gathering or caking, and the crystallization quality is improved.

The invention relates to the technical field of aerostats, and provides a high-altitude balloon self-destruction device and a high-altitude balloon system.The high-altitude balloon self-destruction device comprises a mounting frame, the mounting frame is provided with a first mounting part, and the first mounting part is used for being fixedly connected with a dome flange of a high-altitude balloon; the hob is provided with a first end and a second end on the axis of the hob, the first end is connected to the mounting frame through a safety piece, the second end is used for being connected with a traction rope, and the hob can be separated from the mounting frame under the action of the traction rope and cut the balloon film of the high-altitude balloon. After a flight task is finished and the balloon-parachute cabin is separated, the parachute can pull the traction rope to trigger the hob of the high-altitude balloon self-destruction device to destroy the balloon membrane, so that the balloon safely lands back to a preset area, and the safety problem that the balloon body of the high-altitude balloon uncontrollably flies at high altitude for a long time is avoided; in addition, the high-altitude balloon can be prevented from being in direct contact with the balloon film soft structure in the releasing process, and the safety of the balloon releasing process is guaranteed.

The invention discloses an oscillation suppression method for grid connection of a wind power plant through a modular multilevel converter. The method comprises the following steps: introducing a harmonic component of an output current of a wind field side MMC converter as an additional control quantity into voltage control of the wind field side MMC converter, controlling the output current of the wind field side MMC converter to generate an output voltage, and suppressing oscillation when a wind power plant is connected to a grid through the MMC converter. According to the method, the oscillation of the output current of the wind power plant, namely the input current of the MMC at the wind field side, can be suppressed, and the control complexity is reduced.

The invention discloses a lithium battery combined health state estimation and service life prediction method, which comprises the following steps of: 1, predicting the health state and the residual service life of a lithium battery by carrying out pulse test on the lithium battery and establishing a Thevenin model at the aging normal operation stage of the lithium battery; 2, after the lithium battery enters a deep aging stage, performing an EIS test on the lithium battery to obtain impedance spectrum data, and correcting the Thevenin model into a variable order RC model; and 3, estimating the health state of the deep aging stage by using the impedance spectrum data and parameters identified by the variable order RC model, and when the prediction error of the two parameters is smaller than an error threshold value, considering that a battery health state and residual life prediction model suitable for the deep aging stage is successfully established. Otherwise, adjusting the order of the variable-order RC model to reduce the error. According to the invention, the reliability of lithium battery life prediction and estimation in a complete life cycle can be ensured, so that the control complexity and cost of a test working condition can be effectively reduced.

The invention discloses a double-screw compressor which comprises a shell, a first screw, a second screw, a third screw and a fourth screw, the shell is provided with an inner cavity, an air inlet and an air outlet, and the air inlet and the air outlet are communicated with the inner cavity; the at least one pair of screws are rotatably arranged in the inner cavity of the shell; and the internal volume ratio adjusting mechanism is arranged at the position, close to the exhaust port, of the shell and used for carrying out stepped adjustment on the through-flow area between the inner cavity of the shell and the exhaust port. According to the technical scheme, various working conditions of the compressor can be adapted, components such as a sliding valve are omitted, and the structural complexity and the control complexity are reduced.

The invention discloses a large model reasoning hardware accelerator based on data flow execution, and belongs to the technical field of large model reasoning hardware acceleration. Each node comprises a linear calculation kernel used for sequentially completing query / key / value projection and attention output projection in multi-head attention calculation, dimension raising projection and dimension reduction projection calculation in a feedforward neural network layer, and inverse quantization operation after each projection is output; the multi-head attention calculation kernel is used for completing loading and quantization of query / key / value vectors, multi-head division and cache management, attention score calculation, Softmax normalization, context vector generation and KV cache updating; the RLA kernel is used for completing residual addition, layer normalization, quantization / inverse quantization and nonlinear activation calculation of each layer; the three cores in the same node are located in the same SLR area, and data transmission is carried out through a hardware queue and an HLS blocking mechanism. According to the invention, high hardware utilization rate and low-delay reasoning can be realized.

The invention discloses a group control method of a water electrolysis hydrogen production array, group control equipment of the water electrolysis hydrogen production array and a storage medium, and belongs to the field of new energy, and the method comprises the following steps: according to a preset time period, actively obtaining to-be-distributed power needing to be consumed through multiple ways; operating parameters of an electrolytic cell in the water electrolysis hydrogen production array are obtained, consumption power data of the electrolytic cell are determined according to the operating parameters, and the consumption power data comprise a current consumption power value, a consumption power upper limit value and a consumption power lower limit value; determining the output power of each electrolytic cell in the water electrolysis hydrogen production array according to the power to be distributed and the consumption power data; and controlling the electrolytic bath to operate according to the output power. The invention aims to improve the automation level of the water electrolysis hydrogen production array and improve the economic benefit of a hydrogen production system.

The invention provides a control method of a power conversion circuit, power conversion equipment and a power supply system. The power conversion circuit comprises a primary side bridge circuit, a transformer, a resonant inductor and a secondary side bridge circuit, and correspondingly, the control method comprises the following steps: acquiring a real-time DC voltage on a second end of the primary side bridge circuit, and a real-time AC voltage and a real-time AC current on a second end of the secondary side bridge circuit; calculating the real-time transmission power of the power conversion circuit according to the real-time AC voltage and the real-time AC current; according to the real-time transmission power, the preset power transmission direction, the real-time direct-current voltage and the real-time alternating-current voltage, a target inner phase shift angle of the primary-side bridge circuit and a target outer phase shift angle between the primary-side bridge circuit and the secondary-side bridge circuit are obtained through decoupling; and controlling the power conversion circuit to transmit power in a preset power transmission direction according to the target inner phase shift angle and the target outer phase shift angle. According to the method, the power conversion circuit can realize bidirectional operation.

According to the control circuit for screen display, the screen driving circuit, the chip and the screen, the frame display enable signal can be changed by changing the total frame number in the unit time and the display frame number in the unit time, so that the time of displaying a pattern by the liquid crystal screen in the unit time is changed to realize gray scale adjustment, and the visual persistence principle is utilized to adjust the brightness of the liquid crystal display screen. The display effects of gradually brightening, gradually extinguishing, breathing and the like can be achieved, gray control is not limited by the electrical specification of a liquid crystal screen any more, the software control complexity is greatly reduced, and the good visual impression is achieved.

The invention discloses a rail holding type suspension driving maglev train system, and relates to the technical field of maglev train systems. Decoupling of suspension, guiding and driving functions of the maglev train is achieved, the control complexity of the maglev train is reduced, and safe operation of the maglev train is guaranteed. The system comprises a vehicle body structure, an I-shaped supporting beam, a suspension system, a driving system and a safety limiting and braking system. The train body structure comprises a train and a suspension frame arranged at the bottom of the train. The two ends of the suspension frame extend downwards and then extend inwards to form a cavity, and the upper flange of the I-shaped supporting beam extends into the cavity of the suspension frame. The suspension system is arranged between the top wall surface of the cavity of the suspension frame and the upper surface of the upper flange; the driving system is arranged between the lower surface of the upper flange and the bottom wall surface of the cavity of the suspension frame; the safety limiting and braking system is arranged between the side face of the upper flange and the side wall face of the cavity of the suspension frame. The performance of the suspension driving system is improved.

The embodiment of the invention relates to the technical field of pneumatic massage, in particular to a pneumatic massage system which comprises an air source device, an air valve, an air bag, a pressure regulating valve and a controller. Wherein the air bag is in ventilation connection with the air source device through the air valve, the pressure regulating valve is communicated with the air valve, the controller is used for executing a first pressure regulating step and a second pressure regulating step, the first pressure regulating step and the second pressure regulating step are executed alternately, and the first pressure regulating step comprises the steps of controlling the air valve to be opened and controlling the pressure regulating valve to be opened; air in the air bag is guided to be discharged through the pressure regulating valve, so that the air pressure in the air bag is reduced to a second air pressure value from a first air pressure value; the second pressure regulating step comprises the steps of controlling the air valve to be opened, controlling the air source device to inflate the air bag, and controlling the pressure regulating valve to be closed, so that the air pressure in the air bag is increased to the first air pressure value from the second air pressure value. During use, vibration massage can be realized only by controlling the pressure regulating valve to be opened or closed and keeping the air valve open, so that the difficulty of a control program is reduced, and the noise is reduced.

The invention belongs to the technical field of multi-port converter control, and relates to an inertia sharing control method based on a hybrid five-port converter, which realizes overall and inter-phase energy balance through overall and inter-phase inertia sharing control. Inertia support of a sub-module capacitor and a DAB output capacitor is realized through inertia sharing control of an LVDC port. The inertia support of the DAB output capacitor is realized through the inertia sharing control of the sub-module capacitor; the performance of the inertia support is improved through inertia sharing control of DAB output capacitance based on model prediction; power supply to a passive port is realized through voltage and current double-closed-loop control of an MVAC port; according to the method, four inertia sharing controllers and three balance controllers are provided, multi-stage joint control is fully scheduled, the virtual inertia control coefficient is increased, the fluctuation quantity of capacitor voltage is reduced, the system is helped to rapidly transit the transient state, the transient state performance of the system is optimized, and the dynamic performance and the operation boundary of the system are improved.

The invention relates to the technical field of quadruped robot control, in particular to a quadruped robot control method based on auxiliary air injection. The method comprises the following steps: constructing a kinetic equation of the quadruped robot; the posture data of the quadruped robot are collected in real time through a sensor, and the posture of the quadruped robot is calculated; the unbalance degree of the quadruped robot is calculated according to the poses, and whether an air injection device is started or not is judged; and when the air injection device is started, the air injection angle, the air injection time and the air injection force are controlled by adopting a PID self-adaptive control algorithm until the quadruped robot restores to be stable. When the quadruped robot moves at a high speed, the robot easily loses balance due to inertia and external interference. The air injection device can quickly generate counter-acting force at the moment of unbalance to help the robot to recover balance and prevent the robot from falling down or being out of control.

The present invention discloses an aerial automated replacement device for a single lamp controller based on an unmanned aerial vehicle platform, comprising an unmanned aerial vehicle, a mechanical arm and a controller disassembly and assembly mechanism, wherein the mechanical arm is set up on the unmanned aerial vehicle, and the controller disassembly and assembly mechanism is fixed to the end of the mechanical arm; the controller disassembly and assembly mechanism comprises a rotating motor, a mechanical claw housing, a mechanical claw and a camera assembly for visual positioning when replacing the controller; the mechanical claw housing is fixed to the driving end of the rotating motor, the camera assembly is fixed to the mechanical claw housing, and a mechanical claw motor is arranged on the side of the mechanical claw housing close to the controller. In addition, the device is also equipped with an equipment recovery bin and an equipment replacement bin, which can be used to store recovered parts and replacement parts. The invention realizes the automatic replacement of a plug-in type single lamp controller installed on the top of a street lamp fixture in the air through a unmanned aerial vehicle platform, which greatly reduces the maintenance cost and safety hazards of this type of single lamp controller and improves work efficiency.

The invention provides a resonant three-port direct-current converter topology and a fixed-frequency PWM (Pulse Width Modulation) method of the resonant three-port direct-current converter topology, which are suitable for an optical storage system, and the three-port direct-current converter topology comprises a photovoltaic port Vpv, a battery port Vbat, a load port Vo, a first filter capacitor C1, an input half bridge, an output half bridge, a first direct-current inductor L1, a first resonant capacitor Cr and a first coupling inductor, the input half-bridge comprises a first switch tube S1, a second switch tube S2, a second filter capacitor C2 and a third filter capacitor C3, and the output half-bridge comprises a third switch tube S3, a fourth switch tube S4, a fourth filter capacitor C4 and a fifth filter capacitor C5. By adopting a dual-active half-bridge structure and a coupling inductor, the load is ensured to be electrically isolated from a photovoltaic / battery, and the load is effectively isolated from the photovoltaic / battery; the number of switching tubes and magnetic elements is reduced, the device cost is reduced, the power density of the device is improved, flexible energy management among ports is realized under a single-stage structure and a fixed switching frequency, and full-range soft switching is realized.

The invention discloses a partition-based distributed control method and system for a medium and low voltage AC / DC power distribution network, and relates to the field of power distribution network control, and the method comprises the steps: on the basis of partitions of the medium and low voltage AC / DC power distribution network, setting an agent as a controller in each partition, and carrying out the distributed control through employing a multi-agent technology. The method comprises the following steps: firstly, proposing a distributed control model of the medium and low voltage AC / DC power distribution network, and performing optimization control on adjustable resources in a region to reduce network loss in the region; then, converting the multi-time-scale and multi-device coordinated optimization model into a Markov process, and defining a state space, an action space and a reward function; and finally, solving the Markov process by using an MAPPO algorithm to realize partition-based distributed control of the medium and low voltage AC / DC power distribution network. According to the invention, distributed parallel control can be realized for reducing network loss and eliminating voltage out-of-limit problems, and compared with centralized control, the control complexity of the medium and low voltage AC / DC power distribution network is reduced.

This invention provides a self-cleaning aluminum ash conveying device, belonging to the field of aluminum ash conveying. It includes a screw conveyor with a top cover. The top cover has partition grooves evenly spaced along its length. Air holes are provided on both the front and rear sides of the screw conveyor, with each pair of adjacent air holes forming a group, and several groups arranged along the length of the screw conveyor. A moving assembly is symmetrically arranged on both the front and rear sides of the screw conveyor, and a moving plate is installed within the moving assembly. This invention, through the cooperation of the moving assembly, lifting assembly, and connecting assembly, enables the simultaneous and reverse blowing of aluminum ash from both sides of the screw conveyor. Simultaneously, the partition frames on both sides isolate the interior of the screw conveyor, preventing the blown aluminum ash from shifting laterally within the screw conveyor, thus ensuring a more thorough cleaning effect.

This invention discloses a wastewater treatment device and method for all-cotton spunlace nonwoven fabric, relating to the field of wastewater treatment technology. The device includes a wastewater treatment tank, a collection tank, a drive structure, two sets of trajectory running structures, and a pusher block. This invention utilizes the coordinated action of the pulling and restraining units in the trajectory running structure to move the pusher block along a rectangular closed trajectory of backward, downward, forward, and upward movement, sequentially completing the functions of drainage, scraping and conveying impurities, and resetting after impurity removal. When the pusher block moves forward, it contacts the opening and closing structure, automatically opening the sealing door through the mechanical linkage of the contact plate, slide rod, connecting plate, guide plate, and connecting rod, and closing it as the pusher block resets. This eliminates the need for a separate power source or sensor for the sealing door, simplifying the device structure and reducing manufacturing costs and control complexity.

The invention discloses a hydrogen production power supply device with an electric energy quality control function and a control method, the device comprises a bridge rectifier module, a PWM rectifier module, a rectifier transformation module and a control module, the input end of the bridge rectifier module is connected with an alternating current power supply through the rectifier transformation module, and the output end of the bridge rectifier module is connected with an electrolytic bath to supply power to the electrolytic bath; the output end of the bridge rectifier module is further connected with the PWM rectifier module through the control module, and the control module controls the output current of the PWM rectifier module according to the harmonic voltage / current state of the bridge rectifier module so as to carry out electric energy quality management. The invention has the advantages of simple and compact structure, low cost, small volume and weight, low control complexity, high reliability and the like.

The invention discloses a single-degree-of-freedom multi-stage spherical connecting rod device which comprises a stand column, a driving system, a first-stage connecting rod set, a second-stage connecting rod set and a tail end connecting rod. Wherein the driving system is mounted on the stand column; the first-stage connecting rod set comprises a first planetary gearbox, a first-stage connecting rod, a first-stage driving rod, a first-stage transmission rod and a first-stage long rod. The second-stage connecting rod group comprises a star gear box II, a second-stage connecting rod, a connecting rod I, a second-stage driving rod, a second-stage long rod I, a second-stage long rod II, a second-stage transmission rod, a connecting rod II and a connecting rod III; the tail end of the first-stage connecting rod is connected with the head end of the second-stage connecting rod through a rotating pair, and the tail end of the second-stage connecting rod is connected with the head end of the tail-end connecting rod through a rotating pair. The device has the characteristics of simple mechanism and wide adaptability, and the complexity of a driving control system of the device is reduced.

The invention provides an autonomous task planning system for an optical agile remote sensing satellite task, and the system comprises a conventional task planning module which is used for determining a visible time window of a conventional observation target according to the conventional observation target information, the satellite orbit information, and the pointing range of a satellite optical axis; performing conventional task planning according to the visible time window of the conventional observation target to obtain a conventional task sequence; the standby working module is used for executing tasks in sequence according to a conventional task sequence and acquiring execution states of subsystems and single machines on the satellite; the emergency task planning module is used for re-planning a first task which is not executed in the conventional task sequence to obtain an updated task sequence when the execution state is abnormal or temporary target injection is received; and the standby working module is also used for executing tasks in sequence according to the updated task sequence and acquiring execution states of each subsystem and each single machine on the satellite. According to the scheme, the control complexity of a satellite ground system is reduced, and the autonomous task planning capability of the optical agile remote sensing satellite is improved.

This utility model provides a switch for liquid metal printing, mainly relating to the technical field of liquid metal printing equipment. The switch for liquid metal printing includes a nozzle mounting plate, a graphite plate, ceramic fiber cotton, a fixing plate, a connecting rod, and a nozzle. The nozzle is fixedly installed on the lower part of the nozzle mounting plate, and the upper part of the nozzle mounting plate serves as the sealing surface of the switch. The nozzle mounting plate is fixedly installed in the printing crucible from top to bottom, providing a stable mounting reference for the entire switch. The advantages of this utility model are: this equipment can meet the high flow rate requirements with a single elongated switch, eliminating the need for multiple individual circular hole switches, simplifying the structure, reducing the disturbance of the switch to the liquid metal, and effectively improving the metal printing quality.

The present invention discloses a material conveying device for water conservancy construction, including a base, a conveying cylinder is arranged on the base, a feed port is arranged at one end of the conveying cylinder, a first discharge port is arranged at the other end, a conveying blade is rotatably arranged in the conveying cylinder, a discharge port is also arranged on the conveying cylinder beside the first discharge port, an aggregate box is also arranged on the base, the discharge port is connected with the aggregate box, a second discharge port is arranged on the top of the aggregate box, a pump mechanism is also arranged in the aggregate box, the pump mechanism can pump the concrete in the aggregate box out from the second discharge port, and an opening and closing mechanism is arranged in the discharge port. When the supply of concrete needs to be suspended, the opening and closing mechanism can open the discharge port, the conveying blade continues to operate, and the concrete will be stored in the aggregate box through the discharge port. Since the concrete in the conveying blade is still flowing continuously, the present invention is not prone to the situation where the concrete stands and solidifies in the conveying cylinder.