141 results about "Stable system" patented technology

The invention discloses an inverter intelligent control method based on a self-adaptive algorithm, and relates to the technical field of inverter intelligent control, and the method comprises the steps: multi-source temperature collection and environment recognition, machine learning-based electric-thermal coupling prediction, self-adaptive inverter parameter optimization, and cooperative thermal management and fault diagnosis self-repairing. According to the high-temperature or low-temperature failure risk of the motor and the inverter under the extreme climate, temperature distribution and load information are obtained in real time, the temperature rise trend is predicted in advance, and the current, voltage and modulation strategy of the inverter are actively adjusted, so that safe derating or torque compensation is achieved; multi-sensor cross validation and observer fusion are carried out when sensors drift or devices are aged, stable operation and efficient energy utilization of the system are kept, and the drivability and the whole vehicle reliability in an extreme environment are remarkably improved; in the process, fault diagnosis and self-repairing can be further improved through online model updating, and the durability and economical efficiency of the electric drive system are improved.

The invention discloses a smart park facility predictive maintenance system based on a digital twinborn technology, and relates to the field of smart park facility maintenance. Comprising a data acquisition module, a preprocessing module, a digital twin model construction module, a fault prediction module, a maintenance decision module, a maintenance resource management module, a user interaction module, a system management module, a spatio-temporal data analysis and prediction module and a social-technical system fusion module. The method comprises the following steps: collecting and fusing a risk-dependent frequency modulation rate of quantum sensing, improving speed and precision by means of quantum calculation, fusing a digital twin model into a meta-universe concept and an intelligent agent, predicting a fault by combining quantum machine learning and causal inference, optimizing a maintenance decision based on a game theory and reinforcement learning, and managing resources by using a block chain-Internet of Things fusion technology. The invention discloses a brain-computer interface and holographic projection interaction and quantum encryption dual-protection management system. The system is accurate in data acquisition, vivid in model construction, accurate in fault prediction, scientific in maintenance decision, efficient in resource management, immersive in interactive experience and safe and stable in system, and ensures stable operation of park facilities.

The invention relates to the technical field of wind power foundations, in particular to a wind power foundation and a construction method thereof. Comprising a base and four concrete pile foundations, a hydraulic column is installed at the top end of each concrete pile foundation, an expansion supporting piece is arranged on each concrete pile foundation, the movable end of each hydraulic column is hinged to the base, a universal ball seat is embedded in the center of the base, a foundation column is installed on the top face of the universal ball seat, and a limiting disc is installed at the bottom of the foundation column; a set of limiting springs are installed between the limiting disc and the base, the base column is slidably sleeved with a universal sliding sleeve, the top and the bottom of the universal sliding sleeve are each provided with a turbulent flow device, a lantern ring is embedded in the universal sliding sleeve, four universal hinge joints are embedded in the lantern ring, and four hydraulic push rods are hinged to the base. According to the invention, a wind-resistant stable system which takes an electric control system as a core and is deeply linked with the hydraulic push rod, the universal sliding sleeve and the turbulent flow device is constructed, and the technical breakthrough from passive bearing to active counteracting is realized.

The utility model relates to the field of knitted fabrics, in particular to a knitted fabric with a three-dimensional floating supporting structure, which comprises a fabric body, the fabric body comprises a surface layer, a bottom layer and a supporting layer, the surface layer comprises a yarn and a plurality of first weaving lines, the bottom layer comprises b yarn and a plurality of second weaving lines, and the supporting layer comprises c yarn and a plurality of third weaving lines. In the third weaving row, the c yarn is woven on the rear needle bed in a needle separation mode, and the c yarn woven on the rear needle bed is turned to the front needle bed for needle turning weaving. At least one supporting layer is arranged between the surface layer and the bottom layer, a three-dimensional supporting structure is formed, the floating supporting units can be adjusted in a self-adaptive mode according to the shape and the motion state of the foot, the floating supporting units can support each other when stressed, a dynamic stable system is formed, and better supporting and stability are provided for the foot; meanwhile, the floating supporting units can automatically change the opening and closing states, air circulation in the shoes is automatically adjusted according to the motion state of a wearer, the feet are kept dry and comfortable, and the air permeability is improved.

The invention relates to the technical field of military equipment maintenance support, in particular to a maintenance cabin intelligent system based on multi-modal data fusion and dynamic cooperative control, which comprises a multi-modal sensor module, a dynamic decision module and an actuator module, the multi-modal sensor module, the dynamic decision-making module and the actuator module are connected through a closed-loop control link, and original data of the multi-modal sensor module are input into the dynamic decision-making module; a control instruction output by the dynamic decision module drives the actuator module to act; and the execution state of the actuator module is fed back to the dynamic decision module to dynamically adjust the task priority. According to the method, a three-dimensional map is constructed through multi-modal sensor fusion, and task allocation is dynamically optimized through reinforcement learning and Nash equilibrium; the GAN generates adaptive camouflage, improves the YOLOv7, improves the damage detection precision, carries out real-time path planning and dynamic power management, and achieves the high environmental adaptability, efficient execution, and reliable and stable system performance.

The invention discloses an anti-shaking device and method for hoisting an unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicle hoisting operation. The device comprises a mounting plate and a fixing shell fixed to the bottom of the mounting plate, and a mounting shell is arranged on the mounting plate. The innovative point is that a passive stabilizing system composed of a wind guide mechanism, a wind power conversion mechanism and a gyro mechanism and an active adjusting system composed of an adjusting mechanism and a reverse thrust stabilizing system are integrated. The air guide mechanism guides airflow to drive a rotating column of the wind power conversion mechanism to rotate, a gyro disc is driven to rotate at a high speed through multi-stage gear transmission acceleration, and the posture of goods is passively stabilized through the generated gyroscopic effect. Meanwhile, the adjusting mechanism adapts to posture changes of the unmanned aerial vehicle by adjusting the length of a hoisting steel cable, and the reverse thrust stabilizing system actively counteracts wind disturbance through vector air injection. The invention further provides a corresponding anti-shaking method. According to the scheme, swinging of hoisted goods in the high altitude can be restrained, the posture stability and the wind resistance are improved, and the automatic unloading function is achieved.

The invention provides a cable laying management system for an offshore wind plant, relates to the technical field of cable laying management, and realizes refinement and dynamic risk assessment by accurately dividing sections, deeply mining historical operation data and carrying out correlation analysis. According to the method, the fault probability of each section can be accurately estimated, a global risk map is generated to strengthen risk early warning, key nodes can be screened according to risk levels and association characteristics, monitoring resources are flexibly deployed, a scientific priority list is formed to optimize operation and maintenance resource configuration, and the response speed is increased; meanwhile, a full-chain safety guarantee system is constructed by visually identifying a risk area and setting an alarm threshold value, intelligent support is provided for operation and maintenance decisions by means of a data-driven prediction model and continuously optimized analysis logic, and finally the collaborative targets of controllable safety risk, efficient resource utilization, reduction of operation and maintenance cost and stable operation of the system are achieved.

The invention discloses a self-adaptive anti-saturation output feedback control method for a complex system based on gain adjustment, belongs to the field of self-adaptive control, and is suitable for the complex system containing nonlinear and unknown time-varying vectors and bounded external interference. The method comprises the following steps: firstly, acquiring a real-time output signal of a controlled object, and then estimating an unmeasurable internal state of the controlled object by a state observer; an initial control signal is generated based on a dynamic model, an actuator saturation limit and the like, and after optimization of a dynamic gain updating law, whether the signal is close to saturation is judged through monitoring conditions; and when approaching, triggering a planning moment, adjusting the signal amplitude to a safety range by a planning function, generating a self-adaptive anti-saturation output feedback control signal, outputting the final output feedback control signal to an actuator, and circularly executing the steps. The method ensures that a controlled object outputs a stable tracking reference signal, the control signal is always in a saturation limit, and stable operation of the system is realized without a sesame phenomenon.

The utility model discloses an anchoring system of marine photovoltaic float, the marine photovoltaic float includes the photovoltaic array of the floating plate of multiple pieces, and the photovoltaic array is surrounded by multiple hydrofoils around arrangement, the anchoring system includes the rope net of the fine line rope of multiple pieces and is woven, still includes multiple thick line ropes, the rope net one end consolidation is on the triangle stable system of hydrofoil, and the other end is linked with thick line rope, thick line rope is surrounded in the outside below of photovoltaic array, and tightens the rope net, utilizes the net clothes physics principle, and tightens the rope net through the outward pulling thick line rope end portion, realizes the tight fixing of hydrofoil and photovoltaic array, and can realize the anchoring of marine photovoltaic float in thick line rope end portion fixed mounting anchor rope, anchor chain, counterweight and anchor again.

The invention relates to the technical field of satellite communication, and provides a satellite formation anti-attack cooperative control method and device, and the method comprises the steps: building a multi-agent system model of a satellite formation and a connectivity-based ADoS attack model based on a satellite formation architecture; constructing an anti-attack cooperative control protocol based on a self-triggering mechanism, and establishing a closed-loop error system in combination with the multi-intelligent system model; performing stability analysis on the closed-loop error system to obtain sufficient conditions for realizing consistency of asymptotic stability of the closed-loop stable system, and determining parameters of control gain and a communication mechanism; and carrying out anti-attack cooperative control on the satellite formation based on the control gain and the parameters of the communication mechanism. The method is oriented to an asynchronous DoS attack environment, has the characteristic of saving resources, and can ensure the stability and security of the system.

The invention discloses a method and system for applying vector control to a generalized frequency conversion system. The method comprises the steps that stator flux linkage orientation parameters and torque control parameters are generated according to high-voltage power grid operation parameters collected in real time and an obtained torque instruction; the target slip rate of the motor is dynamically determined through a slip rate limiting module so as to ensure that the inverter works in a power output or absorption safety interval; according to the target slip ratio and the torque control parameter, a rotor side voltage waveform is generated through an inverter, vector control is carried out on a motor rotor, and the torque and the rotating speed of the motor are adjusted; the stability of the system is monitored in real time through the stability augmentation device, the critical stable, over-stable or under-stable state is compensated, and the control parameters or the power grid frequency are adjusted to maintain stable operation of the system. According to the method, the variable-frequency variable-torque control precision and the response speed which are equivalent to those of a traditional high-voltage frequency converter system are achieved, and an efficient, economical and reliable speed regulation solution is provided for a power plant auxiliary engine system.

The invention relates to the field of marine floating bridges, and discloses a marine floating bridge floating island module which comprises a seabed pile foundation, the side wall of the top end of the seabed pile foundation is sleeved with a lifting lug a through a cable a, the surface of the top end of the seabed pile foundation is sleeved with a lifting lug b through a cable b, and floating bridge mechanisms are arranged on the surfaces of the lifting lug b and the lifting lug a. The platform can be quickly built at positions such as the sea surface so as to cope with different use environments. A storm-resistant stable system is constructed through a semi-cylindrical structure, a two-way mooring rope and gravity center adjustment, the curved surface contour of a semi-cylindrical floating plate can guide waves to flow along the side face of a plate body, front impact is avoided, wave impact force is dispersed, and the transverse swing angle is controlled within 5 degrees; the seabed pile foundation forms pull-down and side-pull two-way fixation through the mooring rope a and the mooring rope b, vertical movement is limited, horizontal drifting is restrained, and the module is prevented from being separated from a preset area; the gravity center of the sealed clean water bags in the water storage cavity can be flexibly adjusted by increasing and decreasing the number.

This invention discloses an intelligent inverter control method based on an adaptive algorithm, belonging to the field of intelligent inverter control technology. It employs a five-step approach: multi-source temperature acquisition and environmental identification, machine learning-based electro-thermal coupling prediction, adaptive inverter parameter optimization, collaborative thermal management, and fault diagnosis and self-repair. Addressing the risk of high or low temperature failures in motors and inverters under extreme climates, it acquires real-time temperature distribution and load information, predicts temperature rise trends in advance, and proactively adjusts inverter current, voltage, and modulation strategies to achieve safe derating or torque compensation. Furthermore, it performs multi-sensor cross-validation and observer fusion when sensors drift or components age, maintaining stable system operation and efficient energy utilization, significantly improving driving performance and vehicle reliability in extreme environments. During this process, online model updates further refine fault diagnosis and self-repair, enhancing the durability and economy of the electric drive system.

The utility model discloses an anti-damage clamp for grinding a thin-wall bearing ring, and relates to the technical field of bearing machining. The bearing clamping device comprises a mounting plate, the mounting plate is mounted on external mobile equipment, two clamping plates are slidably arranged on the inner side of the mounting plate, anti-skid rubber pads are mounted on the inner sides of the clamping plates, the inner sides of the clamping plates are concave, the two clamping plates move in the direction close to each other to clamp a bearing, and a linkage set is mounted on the inner side of the mounting plate. According to the clamping device, the air cylinder drives the rack to linearly advance and synchronously mesh with the missing gears on the two sides to achieve rotary transmission, the first telescopic rod pushes the clamping plates to move oppositely, the anti-skid rubber pads on the inner sides of the concave clamping plates elastically deform when making contact with the thin-wall bearing ring, and concentrated clamping force is evenly dispersed to the contact face of the outer wall of the ring; the four-bar mechanism of the double clamping plates and the second telescopic rod form a redundant stable system, the clamping posture is still kept stable under grinding high-frequency vibration, and it is guaranteed that the ferrule is free of plastic deformation in the whole machining process.

The utility model relates to a bridge large cantilever flange plate reinforcing and supporting structure which comprises a bridge body and a cantilever arranged on one side of the bridge body. A light-weight supporting mechanism used for supporting the cantilever is arranged between the bottom of the cantilever and one side of the bridge body, the L-shaped supporting frame and the inclined supporting inclined rod form a triangular stable system, when the cantilever bears a vertical load, the load is transmitted to the bridge body through the supporting frame, the supporting inclined rod provides horizontal resistance, the bending moment of the root of the cantilever is remarkably reduced, and the stability of the cantilever is improved. Due to the high strength of the aluminum alloy material and the filling of the foam core material, it is ensured that the structure has enough flexural rigidity on the premise of light weight, local buckling is avoided, the supporting inclined rods are inserted into the corresponding mounting grooves of the supporting frame for positioning through the upper mounting base and the lower mounting base, final fixing is completed through the limiting pieces, and when the mounting bolts are screwed into the limiting sleeves, the supporting inclined rods are fixed. The sleeve presses the mounting base to be tightly attached to the mounting groove to form rigid connection, welding is not needed through the design, the pre-tightening force of the bolt is adjustable, and different load requirements are met.

The invention discloses a supporting and balancing device for emergency repair of double-row large-diameter deeply-buried pipelines and a construction method thereof, the device comprises a supporting system and an enclosure structure, the supporting system comprises steel supports, steel inclined struts and steel enclosing purlins, and the enclosure structure comprises steel sheet piles, triangular supports and guide supports. The steel sheet piles sink into soil bodies on the two sides of a pipeline through the guide supports and are tightly attached to the open caisson, the steel enclosing purlins are fixed to the inner sides of the steel sheet piles through the triangular supports, the steel supports are longitudinally fixed between the two steel enclosing purlins, and the steel inclined struts are obliquely arranged between the open caisson and the steel enclosing purlins to form a triangular stable system. According to the construction method, device installation, foundation pit excavation, pipeline repairing and dismantling backfilling are completed according to preset steps. The stability and the supporting capacity of the foundation pit are greatly improved, the method is suitable for large-diameter deeply-buried pipeline emergency repair scenes, construction is efficient and convenient, safety accidents can be effectively avoided, and practicability is high.

This application provides a method and related equipment for calculating the sampling control period of a self-balancing robot. The method includes: acquiring the dynamic model and motor control input information of the self-balancing robot; calculating the sampling control description information of the self-balancing robot for any time interval within a preset sampling interval based on the dynamic model and motor control input information; acquiring the instantaneous energy functional, cyclic correlated energy functional, and interval cumulative energy functional of the self-balancing robot at any time interval, and constructing cyclic energy constraint information based on the instantaneous energy functional, cyclic correlated energy functional, and interval cumulative energy functional; and performing negative qualitative analysis on the cyclic energy constraint information in conjunction with the sampling control description information to calculate the sampling control period corresponding to the self-balancing robot. In this way, by calculating the maximum permissible sampling control period, communication and computing resources can be saved while ensuring stable system operation.

The utility model discloses hydraulic oil filtering equipment for a hydraulic oil station, which belongs to the field of hydraulic oil stations and is characterized in that a second valve is mounted at the lower end of an oil tank, the outer end of the second valve is connected with a second pipeline, a first valve is arranged at a pump body, and the outer end of the first valve is connected with a first pipeline; a circulation tank is arranged between the first pipeline and the second pipeline, a piston is arranged in the middle of an inner cavity of the circulation tank, a hydraulic device is installed at the outer end of the circulation tank, and the hydraulic device is connected with the piston and drives the piston to move in the circulation tank. The piston reciprocates in the circulation tank, so that the hydraulic oil fully flows, and the impurity removing efficiency of the filter cartridge is improved. The filter media intercepts particulate impurities within the cartridge, ensuring oil cleanliness. The control valve adjusts the oil flow rate to meet different filtering requirements and accurately control the flow of hydraulic oil. By means of the flange, the sealing ring, the mechanical seal and other measures, the sealing performance of connection between the pipeline and the circulation tank is ensured, hydraulic oil leakage is avoided, and stable system operation and oil cleanliness are guaranteed.

The application discloses a read interference processing method and electronic equipment, and relates to the technical field of solid state disks. The method comprises triggering a first processing strategy when the number of to-be-processed garbage collection tasks is greater than a first task number threshold value, achieving timely switching of the processing strategy to the first processing strategy when the to-be-processed garbage collection tasks are relatively large. Under the first processing strategy, the number of read operations on each physical block is accumulated every time data is read from the physical block. When the accumulated number of read operations on a first physical block is greater than or equal to a first read number threshold value, target data read from the first physical block is migrated to a second physical block, achieving re-writing of the read data into a new physical block for the physical block satisfying the first read number threshold value, changing the data storage location, and solving the technical problem that a large number of garbage collection operations under read interference seriously affect the performance of the solid state disk, and achieving the technical effect of maintaining stable system read performance.

The utility model provides a long-term weathered sandstone layer deep foundation pit slope repairing and reinforcing system, which belongs to the technical field of building construction and comprises an intercepting ditch arranged at the top of a deep foundation pit slope and a drainage ditch arranged at the bottom of the deep foundation pit slope, a mesh structure and a plurality of rows of full-bonding anchor rods are fixed on the slope surface of the deep foundation pit slope, and the mesh structure covers the intercepting ditch and the drainage ditch. And a concrete surface layer is formed on the mesh structure through integral spraying. According to the deep foundation pit slope supporting system, supporting of a deep foundation pit slope is firmer and more reliable, soil landslide is avoided, structural safety of a deep foundation pit is improved, construction quality is guaranteed, a safer and more convenient environment is provided for a construction working face of the deep foundation pit, and long-term stability and safety of a project are guaranteed. Meanwhile, the intercepting ditch is arranged at the top of the side slope, and the drainage ditch and the water collecting well are arranged at the bottom of the side slope, so that the side slope can form a stable system in rainy seasons or drainage seasons, the durability of the side slope is improved, and the service life of the side slope is prolonged.

1. When a rotating body is rotated and fixed to its rotational axis, a new N*BALY lifting force is created. Fn*Baly is a parabolic line characteristic: Fn*Baly = av 2 . Quite different from the normal lifting force with Cotag line: Fn = mv 2 .Cot(ê) / r. See Fig. A, C. 2. N*LEVY Parallel Space Dominion Satellite System: Satellites orbit the Earth in an orbital plane parallel to the equator. Unlike today's satellites, they all orbit the Earth's center. The new system has fewer satellites, evenly distributed, no overlap, no collisions, and stable system connectivity. Fig. D, E, F. 3. New Nguyen Levy formula for the precise calculation of spherical surface: Sn*Levy = n 2 .R 2 & spherical volume: Vn*Levy = 1 / 3.π 2 .R 3, see Fig. J, K, eliminating the 21.5% error of the old formula. It ensures precision in design and manufacturing, increases product quality, reduces costs, and, above all, builds self-confidence among young people and the technical elite. A new, intuitive method accurately measures everything: curves, areas, volumes... that current measuring tapes cannot.

The utility model belongs to the technical field of water conservancy projects, and particularly relates to a pile foundation underwater scour monitoring device which comprises an underwater monitoring robot, and two symmetrically-arranged attaching pieces are fixed to the monitoring area of the underwater monitoring robot relative to the underwater monitoring robot. The attaching part is fixedly connected to the outer surface of the underwater monitoring robot through the supporting bracket, thrust is provided by driving the underwater monitoring robot, the attaching part is made to be tightly attached to the surface of the pile foundation, and at the moment, the underwater monitoring robot, the attaching part and the pile foundation form a relatively stable system. The water flow force, the thrust of the robot and the friction force between the attaching piece and the pile foundation can reach a balanced state, and the robot can be kept at a stable position underwater.

This application discloses a predictive maintenance method for industrial valves, comprising: real-time monitoring of valve operating status; collecting valve data using a data acquisition server; preprocessing the collected valve data to remove outliers; analyzing the preprocessed valve data to construct a predictive maintenance model, identifying abnormal situations, and predicting potential valve failures; and issuing alarm information and providing maintenance suggestions for predicted valve failures. This application significantly improves the foresight and efficiency of valve maintenance, reduces production losses caused by equipment failures, enhances the safety of the production process, ensures stable system operation, and improves overall efficiency.

The utility model discloses a bite mouth formula diving face guard relates to diving tool field. The utility model discloses a face guard main part, its downside is equipped with two level head main body, two level head main body one side is connected through support plate frame support plate, breaths export and installs bite mouth mounting bracket, and the movable universal ball is equipped between bite mouth mounting bracket and two level head main body, the utility model discloses through support plate frame rigidly bears against the lower jawbone of user with support plate, converts water flow impact force into human skeleton natural bearing capacity, breaks through the pain threshold limit of traditional face soft tissue pressure, realizes the revolutionary optimization of mechanics conduction path, simultaneously, three -level stable system collaborative operation, lower jaw support carries longitudinal gravity, two level head hoop ring -shaped restriction head displacement, face guard hoop distribution type fits face profile, constructs space truss formula anti -overthrow structure in turbulent environment, makes equipment maintain bite mouth breathing path millimeter -level displacement accuracy under surge environment, eradicates the sealing failure and breath interruption of the equipment sway.

This utility model discloses a side-mounted eccentric hemispherical valve, which consists of a ball valve mechanism and a valve cavity backflushing mechanism. In the ball valve mechanism, a driver drives the eccentric shaft to rotate, thereby causing the ball crown to rotate eccentrically within the valve body, realizing the opening and closing of the valve. The two ports of the valve body are connected to pipes via flanges and bolts for media flow. The valve cavity backflushing mechanism can flush the valve body cavity when needed. A miniature water pump draws liquid from the tank through a suction pipe, delivers it to a straight pipe through a drain pipe, and then into a sleeve. The sleeve has multiple fan-shaped openings and spray holes, from which liquid is sprayed at multiple angles, flushing away any solid impurities that may accumulate within the valve body, preventing abnormal wear on the ball crown and the internal coating of the valve body. A liquid level sensor monitors the liquid level in the tank for timely replenishment, ensuring the backflushing effect, extending the valve's service life, and ensuring stable system operation.

Provided in the present application are a trajectory control method for a virtual projectile, and a related apparatus. The embodiments of the present application can be applied to scenarios such as games, virtual reality and augmented reality. The method comprises: when a user controls launching of a virtual item, in response to the launching operation, after a target virtual projectile that possesses a function of changing the motion trajectory along with the movement trajectory of a virtual object is launched, acquiring in real time the distance between the target virtual projectile and the virtual object or the included angle between the motion direction of the target virtual projectile and the movement direction of the virtual object; and, if the distance between the target virtual projectile and the virtual object is less than a distance threshold, or the included angle between the motion direction of the target virtual projectile and the movement direction of the virtual object is greater than or equal to an included angle threshold, controlling the target virtual projectile to stop changing the motion trajectory along with the movement trajectory of the virtual object. Thus, the present application can change invalid operations into valid operations, so as to reduce the occurrence frequency of invalid operations, thereby reducing the possibility of system performance problems and ensuring stable system operation.

The invention relates to an application installation method and device, electronic equipment, a storage medium and a program product, and the method comprises the steps: responding to an installation event of at least one first application, and obtaining foreground operation data of the electronic equipment and current equipment state information of the electronic equipment; on the basis of the foreground operation data and the equipment state information, system resources are allocated to the first applications, and installation of the first applications is executed on the basis of the system resources allocated to the first applications, so that the installation efficiency of the first applications can be improved under the condition of ensuring stable system operation. And allocating system resources matched with the current installation demand to each first application, so that the current installation demand is matched with the installation speed of the first application.

A method and system for regulating the input current of a multi-split air conditioner includes the following steps: when the multi-split air conditioner receives a control instruction, parsing the target opening and closing degrees of each capillary in the control instruction; calculating the total target power of each valve controlled to the target opening and closing degrees; obtaining the input power of each valve as a first power, and calculating all first powers to obtain the total actual power; determining whether the difference between the total actual power and the total target power is greater than a difference threshold; if the difference is greater than the difference threshold, obtaining the bus voltage, and regulating the input current based on the bus voltage. The present invention provides precise temperature control and stable system operation, allowing users to use the multi-split air conditioner more conveniently and comfortably without frequent manual adjustments, greatly improving user experience and satisfaction.

This invention is dedicated to providing a method for automatic planning and optimization of oil product transportation in oil product pipeline networks. Using a color state space model expressed as a linear variable model with parameters and economic predictive control, this method enables real-time management of the sequence of injection of packages. The proposed structure defines an economic objective function, taking into account pumping costs, product interference, and tracking product delivery targets in specific time intervals, which is iteratively optimized over a sliding forecast horizon. The proposed model, using online data, is capable of identifying potential disturbances such as equipment failure or changes in demand, and ensures stable system performance by quickly revising the schedule. The proposed method also avoids the computational complexity of conventional methods and enables real-time implementation with optimization algorithms such as branch and bound. This invention has applications in industrial systems of petroleum product transmission lines and reduces costs, increases productivity, and improves operational flexibility.

The utility model discloses a kind of roof frame cantilever steel platform formwork device, it is related to cantilever steel platform formwork device technical field, including multiple steel truss, multiple section steel and steel platform, multiple steel truss is equidistantly arranged, multiple section steel is equidistantly fixedly connected between adjacent steel truss, the steel platform is fixedly connected at the top of steel truss and section steel, the bottom of steel truss is fixedly connected with support assembly.The utility model cooperates the use of steel truss, section steel, steel platform, support assembly, support frame, connecting rod, screw rod, clamping rod, knob, suspending support assembly, mounting block, connecting piece, plug-in lifting ring, positioning pin, positioning hole and support rod, solve the device possibly only rely on single support mode to form stable system, and device and wall connection possibly adopt welding or fixed fixture, cannot adapt to wall flatness difference or different thickness wall problem.