21results about How to "Achieve speed" patented technology

The invention discloses an orthogonal fractured reservoir frequency variation AVO inversion and parameter prediction method, and relates to the technical field of exploration geophysics, and the method comprises the steps: deducing and reconstructing a fluid saturation horizontal-vertical orthogonal fractured medium rock physical model based on a multi-group fracture-pore medium Chapman model, realizing fluid saturation rock physical modeling containing two groups of orthogonal fracture media; based on an anisotropic reflectivity algorithm and a fluid saturation horizontal-vertical orthogonal fractured medium rock physical model, realizing frequency variation AVO forward modeling of the fractured reservoir, and calculating a frequency variation AVO reflection coefficient and a synthetic seismic record of the fractured reservoir under the interface reflection model; a frequency-varying AVO inversion theory based on a Bayesian framework is constructed by taking a forward modeling process of the frequency-varying AVO as a drive, and the frequency-varying AVO inversion based on the Bayesian inversion framework is realized and reservoir parameter prediction is carried out by utilizing pre-stack seismic AVO data and introducing a simulated annealing-particle swarm algorithm in an inversion process. The method provides a new method and a new means for fine description and prediction of the fractured reservoir.

The invention belongs to the technical field of computer vision, and discloses a small target detection method based on improved RT-DETR, and the method comprises the steps: employing public data / self-built data to make a data set according to a small target task; expanding the data set by adopting a data enhancement method, and dividing the data set into a training set, a test set and a verification set; a small target recognition model based on the improved RT-DETR is constructed, deformable convolution is adopted, an attention mechanism is introduced, the relation of all positions of a target is fully considered, a target area with important information is focused on, and other irrelevant feature information is inhibited; training the constructed model by using the training set and the verification set to obtain a trained detection model; and detecting a small target to be detected by using the trained detection model. According to the invention, the network is reset according to the specific features of the small target, the precision of small target detection is improved, and the balance between the detection processing speed and precision under a complex background is realized.

A speed fluctuation compensation method for a permanent magnet synchronous motor for a compressor comprises the steps that firstly, a three-order phase-locked loop position tracking method is designed based on an extended state observer, the extended state observer is used for replacing a proportional-integral link of a traditional phase-locked loop, and the dynamic performance of a system during speed change is improved; then designing a resonance controller to extract an angle fluctuation error harmonic component, and compensating an output angle of a phase-locked loop, so that the motor realizes position and speed high-precision tracking under a nonlinear load; and finally, analyzing the designed extended state observer type resonant phase-locked loop, giving a parameter setting method, and realizing stable control of the system. According to the invention, the dynamic performance of the phase-locked loop can be improved, the tracking position error of the phase-locked loop is suppressed through the feedforward compensation of the resonance controller, and the periodic angle and speed fluctuation compensation of the system is realized.

The invention discloses a high-temperature superconductive electric suspension test method and system, and relates to the technical field of magnetic levitation, the test system builds a high-temperature superconductive electric suspension force-magnetism-electricity simulation system, and a vehicle is statically suspended by applying different currents to a fixedly arranged coil module. According to the invention, the actual operation conditions of the train at different suspension speeds can be simulated, so that the detected system state of the test system under the test condition can reflect the actual system state of the train system under the test condition to a certain extent under the condition that the test parameters correspond to the test parameters, that is, the system state of the train system under the test condition can be simulated. According to the invention, the simulation test task of the actual train system is realized by means of the test system which is greatly different from the actual train system in size. In the test process, the vehicle is kept static in the advancing direction, so that only the vehicle bearing platform and the coil module which are close to the vehicle in size need to be built, a long-size test circuit does not need to be built, the structure is simple, and the implementation cost of the test is reduced.

The invention discloses a control method for limited operation of a crown block in a complex area, which comprises the following steps of: S1, establishing a three-dimensional coordinate system, and selecting an original point, a cart direction as an X axis, a trolley direction as a Y axis and a lifting direction as a Z axis; s2, based on the three-dimensional coordinate system in the step S1, three-dimensional coordinates of a lifting hook are obtained; and S3, automatic stepless speed reduction of the cart and the trolley is achieved, and speed and position limitation is conducted on the multiple complex areas. According to the invention, the speed and position limitation of the complex region is realized, and the region division method can realize the region limitation of unlimited quantity. According to the invention, the functions of automatic stepless speed reduction and stopping can be realized when the robot moves to the regional boundary. In addition, step speed reduction can be achieved, and the speed is reduced by one gear when the distance is smaller than the gear speed reduction distance only by corresponding the distance to each gear. Fixed point position sensors such as a proximity switch are replaced, and the area limiting function is achieved; and limiting areas and limiting conditions can be customized. The method is not limited to manual operation of the crown block, and is more suitable for the unmanned crown block with distance measuring equipment.

The application relates to the technical field of sewage treatment, in particular to a pressure dosing method and system for sewage treatment. The application first establishes a stable gas pressure environment in a dosing device, and uses a high-precision pressure sensor to collect pressure data in real time; based on Bernoulli equation, a total pressure-dosing flow relationship model and a dosing pipe static pressure-dosing flow relationship model of the dosing device are constructed, and the applicable flow intervals of the two models are determined; after a target flow value is input, the corresponding model is selected according to the interval to calculate the target total pressure or static pressure value; the system adopts a hierarchical PID control strategy, a primary PID is responsible for total pressure adjustment, and a secondary PID is responsible for static pressure fine adjustment, so that the rapidity and accuracy of pressure control are cooperatively ensured; meanwhile, the actual dosing amount is continuously monitored through a flow measurement unit, and when the flow deviation exceeds the set range, a calibration program is automatically started, and the pressure-flow model parameters are optimized in real time; finally, through closed-loop control of pressure and flow, high-precision adjustment of the dosing flow is realized.

The utility model discloses an automatic regulating valve disc, which comprises a valve body display and a valve cover, a fixed block is fixedly connected in the middle of the valve body, the other side of the fixed block is fixedly connected with a buffer pad, a support ring is fixedly connected in the buffer pad, the other end of the support ring is fixedly connected with a sealing ring, and the sealing ring is fixedly connected with the valve cover. A filter screen is fixedly connected to a middle channel of the supporting ring, a detachable valve cover is arranged on the valve body, a box body is fixedly connected to one end of the valve cover, a motor is fixedly connected to the interior of the box body, a valve rod is fixedly connected to the motor, a bearing is fixedly connected to the middle of a connecting rod, and the valve rod is fixedly connected to an inner ring of the bearing; the ball valve is located in the valve body and located between the sealing rings, a channel is formed in the middle of the ball valve, and a connecting opening is formed in the top of the ball valve. By means of the structure, the motor is connected with the valve rod to drive the ball valve to rotate so as to control the valve, the spring and the sealing ring abut against the ball valve, and the ball valve is attached to the sealing ring in a sealed mode when rotating.

The application discloses a kind of unmanned ship GNSS / INS integrated navigation method considering control information, belong to unmanned ship navigation field.The method includes the following steps: construct CNN-LSTM-AM model, with IMU data and control information as input, output forward and lateral velocity;GNSS is normal, IMU is solved to position, velocity and attitude by mechanical arrangement, and after difference with GNSS position, input filter fusion, output error, the result of mechanical arrangement is corrected and velocity is calculated;While using IMU data, control information and velocity train model;Lock is lost, and real-time IMU data and control information are input into model, and forward and lateral velocity are predicted, and then difference with the velocity calculated by mechanical arrangement, and then input filter is carried out state update, and error data is obtained to correct the result of mechanical arrangement, realize continuous state estimation.The application can inhibit INS error divergence under GNSS denial environment, and improve positioning accuracy.

The invention relates to the field of mechanical arms, in particular to a hydraulic electromechanical combined type heavy-load mechanical arm robot. The hydraulic electromechanical combined type heavy-load mechanical arm robot comprises a base. A hydraulic driving assembly is installed on the top of the base, and large-load-capacity transmission can be achieved through the hydraulic driving assembly. And an all-electric driving assembly is mounted on one side of the hydraulic driving assembly. According to the hydraulic electromechanical combined type heavy-load mechanical arm robot, the advantages of a hydraulic driving system in the aspects of large load capacity and low power consumption are adopted, and the characteristics of flexibility, precision and rapidness of a full-electric driving system in the aspect of mechanical arm control are adopted; a hydraulic driving part is applied to a first-stage joint part, a second-stage joint part or a third-stage joint part of the mechanical arm, and a fourth-stage joint part, a fifth-stage joint part and a sixth-stage joint part are driven by a motor, so that high-precision and high-speed control is realized, and control of various degrees of freedom and speeds can be realized.

The application provides a knee joint exoskeleton device and a lower limb outdoor walking aid exoskeleton robot. The device comprises: a thigh contraction connecting rod; a knee joint upper connecting rod connected to the rotating end of the thigh contraction connecting rod in a rotatable manner; a knee joint lower connecting rod connected to the other end of the knee joint upper connecting rod in a rotatable manner; and a knee joint elastic adjustment assembly having an uphill and downhill mode and a flat ground mode. The application switches to the flat ground mode when walking on the flat ground. When the leg is bent and straightened, the knee joint elastic adjustment assembly stores the flat ground elastic potential energy. When the leg is straightened and bent, the knee joint elastic adjustment assembly releases the flat ground elastic potential energy to provide power assistance. The knee joint elastic adjustment assembly switches to the uphill and downhill mode when going uphill and downhill. When the leg is straightened and bent, the knee joint elastic adjustment assembly stores the uphill and downhill elastic potential energy. When the leg is bent and straightened, the knee joint elastic adjustment assembly releases the uphill and downhill elastic potential energy to provide power assistance, which can adapt to different outdoor terrains.

The invention relates to the technical field of vehicle-mounted atmosphere lamp program control systems, and discloses a plastic optical fiber action state adjusting method and system for a vehicle-mounted atmosphere lamp. On the basis of driver emotion analysis information, in combination with an AI algorithm and plastic optical fiber light-emitting action scene type information based on big data storage, scientific classification analysis of vehicle-mounted atmosphere lamp plastic optical fiber light-emitting action scene types is carried out, and self-adaptive matching of vehicle-mounted atmosphere lamp plastic optical fiber light-emitting action scenes based on driver emotion fluctuation is achieved; carrying out reliable real-time analysis on the plastic optical fiber light-emitting control instruction parameters of the atmosphere lamp according to the light-emitting action scene matching information of the plastic optical fiber in the vehicle and by combining an intelligent search algorithm and the scientific plastic optical fiber light-emitting control instruction parameters; the vehicle-mounted atmosphere lamp plastic optical fiber light-emitting control instruction is safely and efficiently planned based on the emotion fluctuation of the driver, and the humanization and intelligence of the light-emitting effect control of the vehicle-mounted atmosphere lamp are improved.

The utility model provides a wireless bridge vibration parameter acquisition device, which belongs to the technical field of bridge performance parameter acquisition devices and is characterized in that a lower shell and an upper shell form a closed shell through a connecting column; a magnetic base is mounted at the bottom of the lower shell; the communication circuit board and the main circuit board are fixed in a closed shell formed by the lower shell and the upper shell through connecting columns; the battery is arranged at the lower part of the main circuit board; the six-axis acceleration sensor is integrated on the main circuit board; the Wifi antenna, the synchronous antenna, the charging interface and the switch are fixed on the upper shell; the Wifi antenna and the synchronous antenna are connected with the communication circuit board through wires. The switch is connected with the main circuit board, and the charging interface is connected with the main circuit board and the battery. The battery is connected with the communication circuit board and the main circuit board through wires. According to the utility model, the independent acquisition device design is adopted, the problems of poor contact and wire disorder caused by a data line are avoided, the capability of adapting to a complex detection environment is improved, and the device is directly adsorbed on an iron bridge to realize rapid installation.

This utility model relates to the technical field of packaging material testing equipment, and in particular to a device for testing the tensile strength of plastic bag handles. It includes a tensile strength testing machine with a mounting plate connected to its upper and lower ends. A controller is installed on the tensile strength testing machine. A compression plate is slidably connected to the front of the mounting plate, and a limit block is fixedly connected to the rear of the mounting plate. A top block is slidably connected within the limit block, and the top block engages with the compression plate. An adjusting screw is rotatably connected to the front of the mounting plate and threadedly connected to the compression plate. A return spring is sleeved on the rear of the top block. By linking a rangefinder with an auxiliary light, the auxiliary light adjusts the crosshair projection position according to the distance between the upper and lower mounting plates detected by the rangefinder, forming a vertically aligned reference. This ensures that the upper and lower ends of the plastic bag are held in the same vertical direction, achieving vertical clamping of the plastic bag and improving the accuracy of the test data.

The invention relates to a design method, device and equipment of a same-strategy multi-objective reinforcement learning framework. The method comprises the following steps: constructing a same-strategy multi-objective optimization model; the same-strategy multi-objective optimization model comprises a pre-training model and an online strengthening model. And the pre-training model performs optimization training on the current action strategy based on the expert demonstration data to obtain a to-be-enhanced strategy. On the strategy optimization model, the target completion capability of a to-be-enhanced strategy is evaluated, target sampling probability distribution is obtained according to the target completion capability, a behavior target is sampled according to the target sampling probability distribution, and training data is collected according to the behavior target obtained through sampling; and on the basis of the collected training data, a KL regularized reinforcement learning algorithm is adopted to carry out online optimization on the to-be-reinforced strategy, and an optimal target strategy is output. By adopting the method, the reasoning efficiency and precision of the strategy of velocity vector control of the fixed-wing aircraft can be improved.

The invention relates to a drive device for an axle of a motor vehicle, the drive device having an electric motor (8) which can rotatably drive two half-axles (2) pointing in opposite directions via a switching stage (7) and a differential, wherein wheels are arranged at the ends of the half-axles facing away from the differential. The differential is an axle-centre transmission (1), on one side of the axle-centre transmission facing the half-axles (2) the electric motor (8) is arranged and on the other side of the axle-centre transmission facing the half-axles (2) the switching stage (7) is arranged, wherein the switching stage (7) can be rotatably driven by the electric motor (8) via a through transmission (9) transverse to the axle orientation (3) of the half-axles (2).

A method for monitoring the operation of a frequency converter (1), which is designed to control an electric motor (2), wherein the method comprises the steps of: - generating phase voltages (u1, u2, u3) for corresponding phase lines (2.1, 2.2, 2.3) of the electric motor (2), - determining a voltage rotating field, - measuring the occurring phase currents (i1, i2, i3), - determining a current rotating field based on the measured phase currents (i1, i2, i3), - calculating a phase difference between the voltage rotating field and the current rotating field and / or calculating a frequency difference between a frequency of the voltage rotating field and a frequency of the current rotating field, and - determining an error state when the phase difference exceeds a phase difference threshold value and / or when the frequency difference exceeds a frequency difference threshold value.

The invention discloses self-lubricating wear-free elevator safety tongs, and relates to the technical field of elevator safety, the self-lubricating wear-free elevator safety tongs comprise a base, a wedge block, a guide block, a U-shaped spring, a guide rail, a cleaning module, a processor and a power supply, the wedge block is mounted on the upper part of the outer wall of the base, the guide block is mounted on the upper part of the outer wall of the base, and the U-shaped spring is mounted on the upper part of the outer wall of the base; a guide rail is installed in the middle of the outer wall of the base, a cleaning module is installed on the upper portion of the outer wall of the base, a processor is installed on the upper portion of the outer wall of the base, a power source is installed on the upper portion of the outer wall of the base, and the cleaning module is connected with the processor through a signal line. According to the elevator safety tongs, the cleaning module is installed, so that the self-cleaning function of the elevator safety tongs is achieved, the problems of equipment failure caused by blockage and equipment abrasion caused by sand and greasy dirt in long-term use are solved, the service life of the equipment is prolonged, the safety performance in the use process is improved, and the equipment maintenance cost is reduced.

The invention provides an electromechanical transient simulation model library, a simulation method and a device for conventional direct current, the model library comprises a primary model library and a secondary model library which are established based on a universal modeling thought, specifically, the primary model library is composed of element models generated by modeling high-voltage circuit elements, and the secondary model library is composed of element models generated by modeling high-voltage circuit elements. And the secondary model library is composed of module models generated by modeling the operation control module. According to the method, an electromechanical transient simulation model library is constructed based on the thought of universal modeling, model parameters of a direct-current control system are determined by adopting a modeling method based on classified equivalent centralized compensation, simulation is performed by adopting a multi-rate alternate iteration method, a direct-current circuit is solved based on a historical current source method, and the simulation accuracy is improved. And an integral switching method is adopted to consider calculation precision and stability, so that a user can construct a new direct current model through simple operation, and full coordination of precision, speed and stability of electromechanical transient simulation is realized through simulation calculation.

The invention discloses an automobile side sliding door non-electromagnetic clutch driving motor which comprises a motor, a motor mounting seat, a base, an end cover, a worm, turbines and a spline output shaft, the motor mounting seat is connected with the motor and the base, the end cover is mounted on the base, the worm is mounted on the motor, the turbines are arranged on the inner sides of the base and the end cover, and the spline output shaft is connected with the worm. One end of the worm is connected with the turbine; the motor drives the turbine to rotate through the worm, a magnetic ring support is arranged on the inner side of the base and the inner side of the end cover, and the turbine is installed on the magnetic ring support. Through the action of the magnetic ring and the Hall assembly, accurate control over the number of rotation turns of the motor and the moving position of the sliding door is achieved, meanwhile, through the arrangement of the double-end worm structure, meshing of the worm gear and the worm shaft in the opening and closing process of the vehicle door is not affected, and convenience and stability in the using process are improved.

The novel self-adaptive clamping jaw with the built-in driver belongs to the technical field of material clamping and comprises a main body shell, a main body upper end cover and a main body lower end cover are arranged on the main body shell, a motor sliding rail connecting piece is arranged in the main body shell, a motor is connected to one end of the motor sliding rail connecting piece, and the motor is connected to the other end of the motor sliding rail connecting piece. A motor sliding rail connecting piece is arranged at one end of the main body, a main shaft of the motor penetrates through the motor sliding rail connecting piece, a gear is arranged on the main shaft of the motor, a sliding rail is arranged at the other end of the motor sliding rail connecting piece, two rack chucks are arranged in the sliding rail, the two rack chucks are meshed with the gear, and the rack chucks slide on the lower end cover of the main body. The opening and closing stroke of the clamping jaw is greatly improved under the same size, so that a driver is built in, the torque and speed are adjusted by dialing, an upper computer does not need to be connected, and the operation is simple.

The utility model belongs to the technical field of colored sand production, and discloses a ball milling device for sintered colored sand production, which comprises a bottom plate, the top of the bottom plate is provided with a support frame, the inner wall of the support frame is provided with a ball mill body, one side of the ball mill body is embedded with a bearing, and the inner ring of the bearing is fixedly connected with a feeding pipe. Through the arrangement of the bottom plate, the ball mill body, the ball milling cavity, the first net plate, the first grinding balls, the second grinding balls, the second net plate and the collecting box, materials are conveyed into the ball milling cavity, the first grinding balls grind the materials into semi-finished products, and when the semi-finished products make contact with the second grinding balls, new materials can continue to be fed to make contact with the first grinding balls; and in the earlier stage that new materials are ground into semi-finished products, the semi-finished products making contact with second grinding balls are ground into fine materials, the fine materials can fall off through gaps of a second net plate and enter a collecting box to be collected, and continuous cyclic work can achieve continuous material adding in the grinding process of the device.