19results about How to "Precise closed-loop control" patented technology

The application discloses a kind of digital intelligence powder type free matching variable viscosity fracturing fluid skid-mounted equipment and control method thereof, belong to oil and gas field development technical field.The equipment includes stirring mechanism, feeding mechanism, water feeding mechanism and discharging mechanism, and is centrally controlled by control box.Feeding mechanism uses first screw conveyor to deliver solid material to stirring tank body;Water feeding mechanism supplies water to tank by water feeding pump and water outlet pipe with electromagnetic valve, and water quantity is monitored by water inlet flow sensor;Discharging mechanism outputs mixed liquid by discharging pump, and viscosity sensor detects fracturing fluid viscosity in real time.Control box connects each sensor and executing component, realizes automatic adjustment and closed-loop control of material proportioning by collecting flow and viscosity data.The application realizes accurate and automatic preparation of fracturing fluid, effectively solves the problem of inaccurate and poor stability of traditional manual proportioning, and significantly improves the quality of liquid preparation and operation efficiency.

The application discloses a motor train unit electric high-voltage isolating switch and a control method thereof, which comprises a control system, an electric cylinder, a mechanical connecting rod and a high-voltage isolating switch body. The control system is connected with the electric cylinder through a cable, the output end of the electric cylinder is fixedly connected with one end of the mechanical connecting rod, the other end of the mechanical connecting rod is hingedly connected with a conductive arm of the high-voltage isolating switch body, and a complete driving transmission chain is formed. The internal modules of the control system comprise a signal controller, a driver, a power conversion module and an anti-interference circuit. The internal structure of the electric cylinder comprises a stepping motor, the output end of the stepping motor is connected with a lead screw, the lead screw is fixedly connected with one end of the mechanical connecting rod, and an encoder and a memory battery are arranged at the connecting position of the stepping motor and the lead screw. Precise closed-loop control of on-off operation is realized, the contact pressure is stable, false connection and heating faults are avoided, the equipment maintenance cost is reduced, the structure design is simplified, and the installation and operation requirements of the high-voltage system of a locomotive and a vehicle are met.

The invention provides a control method and system of an intelligent electric appliance, the intelligent electric appliance and a storage medium. The control method comprises the steps that the real-time rotating speed of the draught fan during operation of the intelligent electric appliance is obtained; on the basis of the real-time rotating speed and through a preset corresponding relation, the predicted air volume of the draught fan is obtained through calculation; the preset corresponding relation is obtained by fitting test data of the fan in the single body performance test; comparing the predicted air volume with a target air volume; and the rotating speed of the fan is adjusted according to the comparison result. According to the method, the performance of the single fan is tested in advance, and the preset corresponding relation between the rotating speed and the air volume is established, so that the predicted air volume of the fan can be determined on the basis of the real-time rotating speed of the fan, and a reliable data basis is provided for precise closed-loop control. The overall energy efficiency and stability of the fan are effectively improved, it is ensured that the product can maintain excellent and consistent performance in the whole life cycle, and meanwhile the development and maintenance cost is remarkably reduced.

The application discloses a kind of top coal crushing degree prediction methods based on image recognition, belong to image recognition field, including: real-time acquisition top coal image and analysis definition and edge sharpness, automatically adjust camera focus to obtain high-quality image, apply edge detection algorithm to extract coal block shape and size distribution characteristics, determine crushing degree parameter.If parameter matches with preset threshold value, then it is combined with geological strength and mining depth to predict crushing degree distribution by neural network, analyze change trend and judge whether to need to adjust mining process parameter.Optimized parameter is handled historical data by feedback learning mechanism, determines self-learning adjustment value and updates neural network model, to realize more accurate crushing degree prediction and mining process closed-loop control.The application is fused by image processing, feature extraction and neural network prediction, significantly improves top coal crushing degree identification precision and mining efficiency, and optimizes process parameter dynamic adjustment capability.

The invention relates to the technical field of articulated vehicle steering, aims to solve the problems that an existing hydraulic steering system is high in energy consumption, low in precision, slow in response, insufficient in transverse rigidity, prone to causing vehicle body oscillation and the like, and discloses drive-by-wire electromechanical steering equipment and method for an articulated mining vehicle. The required torque is calculated by the data processing terminal and then is transmitted to the inverter through the CAN bus so as to drive the servo motor; the servo motor drives the enveloping worm through the planetary reduction gear, so that the turbine set is driven, and steering of the rear vehicle body of the hinged type mining vehicle relative to the front vehicle body of the hinged type mining vehicle is achieved. The system has the advantages of energy conservation, high efficiency, accurate response, high stability, fault redundancy capability, simplified structure and low maintenance cost, and the steering performance and reliability of the articulated mining vehicle under severe working conditions are remarkably improved.

The invention provides a can sealing machine pipeline system and method, and relates to the technical field of pop can filling production lines, the can sealing machine pipeline system comprises a new cleaning pipeline, a new replacement gas pipeline, a compressed air pipeline, an exhaust pipeline and a new defoaming pipeline, and the new cleaning pipeline is connected with the new replacement gas pipeline and the compressed air pipeline in parallel; the new defoaming pipeline is respectively communicated with the new cleaning pipeline and the new gas replacement pipeline; and the exhaust pipeline is arranged at the position of can sealing machine equipment. According to the cleaning device, all assemblies contaminated with filling materials in the can sealing machine equipment can be cleaned, meanwhile, a newly replaced gas pipeline can be cleaned, and the pipeline sanitation is improved; a new defoaming pipeline is matched with a new replacement gas pipeline for use, so that the replacement gas flow is subjected to precise closed-loop control, the defoaming effect is improved, and extra gas loss is avoided; and the exhaust pipeline is additionally arranged on a replacement occasion to extract redundant inert replacement gas out of the filling chamber, so that the content of the inert replacement gas in the filling chamber is reduced, and the life safety of operators in an operation area is guaranteed.

A speed reducing motor for an automobile pedal comprises a motor body and a speed reducing box in transmission connection with the motor body, the speed reducing box comprises a box body, and an input cavity, a speed reducing cavity and an output cavity which are communicated in sequence and are perpendicular to one another in axis are formed in the box body; the box body is provided with an input port on one side of the input cavity, and a flange cover is integrally formed on the outer side of the input port; a middle worm and a middle bevel gear arranged on the middle worm in a sleeving mode are arranged in the speed reduction cavity. An output shaft and an output bevel gear which is arranged on the output shaft in a sleeving mode and meshed with the middle worm are arranged in the output cavity, output ports are formed in the positions, at the two ends of the output cavity, of the box body, and the two ends of the output shaft penetrate through the output ports and extend to the outer side. The motor body comprises a machine shell, a stator, a rotor and a motor shaft, the machine shell is installed on the flange cover, the end portion of the motor shaft penetrates through the input port, extends into the input cavity and is in transmission connection with the middle bevel gear, and a Hall controller is arranged in the flange cover; the utility model has the advantages of compact structure, large torque, reliable self-locking, integrated control and the like.

This invention discloses a sensor-based method, device, and computer-readable storage medium for real-time monitoring of organic fertilizer moisture content. The method synchronously acquires raw data from the material pile, extracts density features from the material's physical structure dimension, and extracts biochemical evolution features from its biochemical state dimension. Then, based on a preset multidimensional state mapping rule library, it matches the corresponding environmental interference weight matrix to dynamically compensate and calibrate the initial moisture electrical signal, thereby obtaining the true moisture content after excluding combined interferences such as temperature drift, salt precipitation, and material compaction. Furthermore, it compares this true moisture content with a preset target threshold range, generating corresponding environmental intervention commands to achieve closed-loop control of fermentation moisture. This effectively solves the problem of insufficient adaptability of traditional fixed calibration curves in complex fermentation environments.

This invention discloses an adjustable fundus fixation training visual tracking system suitable for different patients, belonging to the field of medical device technology. The system includes: a patient parameter acquisition module, an adaptive control center, a multimodal stimulus presentation module, an eye-tracking and quantitative assessment module, and an immersive interactive feedback module. This invention aims to solve the problems of fixed training parameters, lack of personalized adaptation, and inability to provide real-time quantitative feedback. By acquiring the patient's interpupillary distance, visual acuity, and tolerance parameters and mapping them to personalized training control parameters, it dynamically generates and adjusts visual stimuli. Simultaneously, it tracks and quantifies eye-tracking performance in real time, transforming the quantification results into multisensory interactive feedback. This achieves adaptive matching between training difficulty and patient ability, improving the personalization, accuracy, and patient compliance of the training.

This utility model discloses an automated spray device for coal washing, relating to the field of spray dust suppression technology. It includes a control box electrically connected to multiple dust sensors and a pump body. The sensors are arranged in a matrix on the top side of the coal washing equipment. The pump body is connected to the middle of multiple branch pipes via a water supply pipe, and the branch pipes are arranged in parallel. The multiple dust sensors are distributed in a matrix on the top side of the coal washing equipment and are correspondingly positioned at the center of each square dust suppression space, enabling real-time zoned monitoring of dust concentration and precise location of dust source areas. The atomizing nozzles are linked to the dust sensors, and each square dust suppression space has an independently controlled atomizing nozzle group on both sides, belonging to the same control module as the corresponding dust sensor. This achieves precise closed-loop control of "single-zone sensing - single-zone spraying," activating the atomizing nozzles only in areas with excessive dust levels, ensuring precise dust suppression and avoiding ineffective spraying in dust-free areas.

The utility model discloses a lubricating oil production raw material mixing arrangement, including lubricating oil raw material mixing casing, be equipped with all -round mixing subassembly in lubricating oil raw material mixing casing, be equipped with automatic feed -thrust component one side in lubricating oil raw material mixing casing, be equipped with automatic feeding component one side in automatic feed -thrust component, the utility model has made improvement to prior art, in actual use, through all -round mixing subassembly, realize raw material's high -speed shearing and three -dimensional turbulent mixing, have solved the stirring equipment that the current generally adopts, and its stirring shaft is usually fixed in the specific position in the stirring kettle, and this static installation mode makes the stirring effect highly concentrated in the local area, and it is difficult to cover and fully agitate all -round in the kettle material.

The invention provides a test system and method for simulating a noise environment of aerospace equipment. The test system comprises a main air compressor, a standby air compressor, a surge tank, a controllable sounder, a first pressure sensor, a second pressure sensor and an industrial personal computer. The surge tank is respectively connected with the main air compressor and the standby air compressor through pipelines; the controllable sounder is connected with the surge tank through a pipeline; the first pressure sensor is arranged in the surge tank; the second pressure sensor is arranged in the controllable sounder; and the industrial personal computer is respectively in communication connection with the first pressure sensor, the second pressure sensor and the controllable sounder. The industrial personal computer of the test system can effectively control the gas pressure required by the test in the surge tank, and further controls the controllable sounder to output the gas with the stable pressure required by the test, thereby ensuring the authenticity and reliability of the simulated space environment.

The application belongs to the technical field of mechanical testing equipment, and discloses an impact testing device, aiming at solving the problems of single function, low adjustment precision, unstable structure and complicated working condition switching of the existing testing device. The device comprises a testing table, a height adjustment mechanism, a placing mechanism and a power output mechanism. The testing table is a bearing base, the height adjustment mechanism is used for adjusting the height of the impact testing head to realize impact or static pressure loading, the placing mechanism is used for clamping a test piece and completing tensile and torsional tests, and the power output mechanism provides controllable power for the height adjustment mechanism. The application can realize single and combined working condition tests of impact, static pressure, tension and torsion, has the advantages of multi-working condition compatibility, precise control, stable structure, high automation degree and modular design, can adapt to the multi-dimensional mechanical property testing requirements of different materials and components, and improves the testing efficiency and data accuracy.

The invention provides a natural gas hydrogen doping control method and system based on a molar mass method, and the method comprises the following steps: calculating an actual hydrogen doping ratio in a mixed gas according to a formula based on a molar mass measurement value; and comparing the actual hydrogen doping proportion obtained by calculation with a preset target hydrogen doping proportion, and adjusting the opening degree of a flow adjusting valve in a hydrogen injection pipeline according to a deviation signal generated by comparison, so that the actual hydrogen doping proportion approaches and is stabilized at the target hydrogen doping proportion. According to the natural gas hydrogen doping control method and system based on the molar mass method, superposition of flow measurement errors is avoided in principle, and the measurement accuracy of the hydrogen doping proportion is remarkably improved, so that more accurate closed-loop control can be achieved, the fluctuation of the actual hydrogen doping proportion is effectively reduced, and stable and safe operation of downstream gas equipment is guaranteed.

The application relates to an axial motor control board, a method, a computer device and a storage medium. The application sets a double processing architecture of a main control chip and a coprocessor in the axial motor control board. The main control chip is responsible for system scheduling, fault diagnosis and data management, so that the control board can still maintain stability under multi-task operation. The coprocessor is dedicated to executing high real-time tasks such as current decoupling, matrix calculation and coordinate transformation in the field-oriented control algorithm, so as to improve the dynamic response performance of the current loop and the speed loop. Precise motor state sensing and closed-loop control can be realized, and the control instruction transmission and operation data storage are more reliable through unified communication framework cooperation, so that the control precision, response speed and operation stability of the axial motor are effectively improved, and the reliability and safety of the control system under complex working conditions are enhanced.

A performance testing device and method for a gas-liquid two-phase flow driven carrier are disclosed. The device includes a supply module, a gas-liquid mixing module, a driven carrier under test, a separation and reflux module, and a control and data acquisition module. The gas-liquid mixing module includes a main tube, a spiral pre-swirl unit, and a gas delivery branch pipe. A Venturi tube structure is provided at the rear of the main tube. The spiral pre-swirl unit and the gas delivery branch pipe are sequentially arranged at the front of the main tube. The Venturi tube structure includes a Venturi tube contraction section, a Venturi tube throat, and a Venturi tube diffusion section. A throttling plate is provided between the spiral pre-swirl unit and the gas delivery branch pipe, and the throttling plate has a main throttling orifice with the same diameter as the throat orifice. A mixing unit is provided between the gas delivery branch pipe and the Venturi tube structure, and the mixing unit has several mixing holes. This invention clarifies the unified process, parameter calibration method, and data processing standard for the performance testing of gas-liquid two-phase flow driven carriers, providing technical support for the formulation of relevant industry standards.

The invention relates to the technical field of wafer processing devices, and discloses a multi-degree-of-freedom self-adaptive alignment and leveling device for wafer bonding, which comprises a Z-direction movement assembly, a suction cup, a measurement assembly, a pressing assembly and an upper pressing cover plate, the Z-direction movement assembly is mounted at the upper end of the pressing assembly, the lower end of the pressing assembly is connected with the upper pressing cover plate, and the suction cup is mounted on the Z-direction movement assembly. A suction cup is installed at the lower end of the upper pressing cover plate in a matched mode, and measuring assemblies for detecting the displacement distance are installed in the Z-direction movement assembly and the pressing assembly. The multi-degree-of-freedom self-adaptive aligning and leveling device for wafer bonding can detect and compensate the bonding displacement of the pressing assembly in the vertical displacement process in real time, realizes accurate closed-loop control of the bonding displacement, and effectively prevents upper and lower wafers, a suction cup or a motion table below from being damaged due to overlarge pressure. And reliable overload protection is provided for equipment, so that the bonding quality and the yield are improved.

The invention discloses a star finder with an efficient heat dissipation and electromagnetic shielding structure, and relates to the technical field of star finders. A built-in electrical element and an integrated assembly are arranged in the star finder body, a shielding laminated layer with an electromagnetic shielding effect is further arranged on the inner wall of the star finder body, broadband electromagnetic interference suppression is achieved through a double-layer composite structure of the shielding laminated layer and a cross-core filtering assembly, and it is ensured that a control circuit works stably; by means of magnetic attraction linkage of the electromagnetic propelling assembly, the permanent magnet plate and the blocking plate, airflow is started according to needs, and control is stable and reliable; the controller generates an alternating magnetic field according to a set time sequence to drive the permanent magnet plate to reciprocate to form forced convection, and energy-saving heat dissipation is achieved. The Kalman filtering controller and the sensor array collect temperature, pressure and flow data in real time, precise closed-loop thrust control is achieved through recursion estimation, and therefore cooperative operation of waste heat driving, intelligent heat dissipation and precise posture adjustment is completed on the premise that electromagnetic compatibility is guaranteed.

This invention discloses an intelligent multi-channel glow discharge device. The device employs a multi-layered integrated design, achieving both high integration and high safety for the positive and negative electrode discharge units. Precise electrode position detection and control units allow for precise adjustment of the distance between electrodes. Independent monitoring and control of multiple channels ensures optimal flow rate and droplet size for each channel. In terms of control, innovative multi-channel collaborative feedback control technology, intelligent adaptive adjustment algorithms, and an integrated safety protection system make the entire glow discharge process efficient, intelligent, precise, safe, and controllable. This invention is particularly suitable for fields such as catalyst preparation, significantly improving production efficiency and catalyst quality consistency while effectively reducing the risks associated with manual operation.