28 results about "Loop design" patented technology

The invention discloses a smart home multi-device linkage power utilization control method based on MOS tubes, and belongs to the technical field of smart home control. The digital processor is used as a core, the built-in numerical control module and the data processing unit are matched, the on-off state of the MOS tube is accurately regulated and controlled in combination with a program control algorithm, fine management of power utilization parameters of intelligent household equipment is achieved, the limitation that traditional control response is lagged and poor in adaptability is broken through, rated parameters and real-time requirements of the equipment are dynamically matched, and the power utilization efficiency is improved. The optimal operation of equipment is guaranteed to prolong the service life, invalid energy consumption is reduced, a high-precision foundation is laid for multi-equipment cooperative linkage, the stability and energy efficiency of a system are improved, multi-scene linkage logic is preset by means of a logic state machine, and rapid switching and reliable execution of multi-scene linkage are realized by matching with an application selection switch of an MOS tube array structure. Scene requirements are automatically adapted, and through independent loop control, fault detection and standby loop design, the problems that linkage switching is tedious and the fault influence is large are solved.

The invention relates to the technical field of data center heat management, and particularly discloses a double-loop heat recovery immersed data center cooling system, which comprises an immersion cooling cabin, a heat recovery module, a heat recovery module, a heat recovery module and a heat recovery module, wherein the immersion cooling cabin is used for installing a server circuit board in an immersion manner; the cooling liquid circulating system is used for removing core heat of the server; a main circulating loop is formed by a variable-frequency circulating pump, a precision filter, a cooling liquid conveying valve, a spraying device, an immersion cooling cabin, a cooling liquid return valve and a refrigerating unit which are connected in sequence; the waste heat recovery cooling system is independent of the main loop and is connected to the heat storage tank through a heat exchange pipe immersed in cooling liquid, a waste heat adjusting valve and a water pump to form a secondary loop for extracting medium and low temperature waste heat; and the intelligent regulation and control module is used for collecting data and outputting a control instruction. According to the system, through immersed direct heat exchange and independent double-loop design, cooperation of server core heat dissipation and waste heat recovery is achieved, and the heat dissipation efficiency and the energy comprehensive utilization level are improved.

The utility model discloses a parabolic radar jammer antenna servo control device, which relates to the technical field of radar jammers and comprises an antenna, the antenna is connected with a servo turntable display control unit, and the servo turntable display control unit is electrically connected with a display control computer. The servo turntable display control unit comprises an antenna control unit, a network switch, a shaft angle encoder and a servo driving unit; the servo driving unit comprises a motor, a motor controller, a control protection circuit, a direct current power supply and a distribution line; the servo driving unit is a rotating speed and current double-closed-loop speed regulation system. According to the utility model, the control protection and driving circuits are reasonably adopted, so that the safety, the response speed and the tracking precision of the system are improved; a double-loop design is adopted, a current loop provides a control object with a wide frequency for a speed loop, and the speed loop improves the low-speed stability of the system, expands the speed regulation range of the system, improves the disturbance resistance of a load, and provides a control object with a wide frequency for position control.

The embodiment of the invention discloses a strategy management method and device, a storage medium and a terminal. On the basis of a cache data execution strategy, near-end execution logic is adopted, so that a strategy engine completes total calculation locally in a system, real-time dependence on far-end service is relieved, and end-to-end processing time consumption is further reduced. By constructing a double-layer heterogeneous cache barrier, when the first cache is abnormal, the first cache is automatically switched to the second cache to read strategy data, so that automatic fault isolation and service degradation are realized, and the service robustness and continuity are ensured. According to the invention, a bottom layer support mechanism of timing synchronous update double caches decouples data synchronization and use, periodic batch synchronization replaces real-time query, and a whole set of process closed-loop design is adopted, so that the problems of high delay, single-point fragility and uneven resource load under a centralized architecture are systematically solved, and finally, the strategy execution capability with both high performance and high availability is achieved.

The present application relates to the technical fields of semiconductor automation testing, in particular to a PMU and reference voltage source dual-function circuit based on ATE testing, comprising an AD5522 chip, a function switching module, a multi-DUT expansion module, a precision optimization module and a control module; the whole adopts single chip function multiplexing design, solves the pain point of large PCB space occupation, achieves the effect of significant space reduction, adopts single PMU multi-DUT expansion design, solves the pain point of high DUT test cost, achieves the effect of significant test cost reduction, adopts Kelvin four-wire and feedback closed loop design, solves the problem of low reference voltage precision, adopts relay switching and programming control design, solves the problem of poor function flexibility.

The utility model discloses a kind of multi-loop processing CV mode electronic load instrument, it includes main control module, main power module, auxiliary power module, display module, button module, power amplifier module, communication board module and interface module.Main control module is core control unit, contains instrument amplifier, and difference proportional circuit, integrated operational amplifier circuit, advance adjustment circuit, lag adjustment circuit and analog switch, different input signal characteristics are adapted by flexible switching adjustment mode.The main power module and auxiliary power module provide stable power supply respectively;Display module and button module form man-machine interface;Power amplifier module drives high-power MOS tube to maintain constant voltage output;Communication board module supports multiple communication protocols;Interface module provides physical connection port for external equipment.The utility model significantly improves system stability and adaptability through multi-loop design, suitable for a variety of application scenarios.

The application relates to the technical field of aero-engines and discloses an automatic design method for a turbine blade of an aero-engine, which comprises the following steps: analyzing design requirements through a language large model, combining retrieval enhancement technology with a turbine blade expert knowledge base, utilizing step-by-step reasoning templates to perform cross-disciplinary coupling verification, generating and optimizing a component design scheme and parameters, subsequently calling a parameterized modeling and an AI simulation agent model to perform multi-physical field prediction, comparing the result with requirements, outputting a design if the requirements are met, and otherwise automatically iteratively adjusting parameters until the requirements are met or the maximum number of iterations is reached. The application can realize end-to-end intelligent closed-loop design from design requirements to design results, reduce manual intervention, quickly generate a design scheme meeting performance requirements, improve design efficiency and reduce design cost, and improve design quality.

The invention discloses a control method, device and equipment for a four-switch buck-boost converter, and the method comprises the steps: obtaining the current input voltage and output voltage of the four-switch buck-boost converter, and generating a loop regulation quantity based on the output voltage and reference voltage after passing through a loop; the control period of the inductive current of the four-switch buck-boost converter is obtained; when the control period is smaller than or equal to a threshold value, the four-switch buck-boost converter is adjusted to be in a fixed-frequency intermittent conduction mode, and the time of the second stage of the inductive current is adjusted according to the loop adjusting quantity, so that the output voltage is kept stable; when the control period is larger than a threshold value, the four-switch buck-boost converter is adjusted to be in a frequency conversion continuous conduction mode, and the time of the first stage of the inductive current is adjusted according to the loop adjusting quantity, so that the output voltage is kept stable. According to the invention, ZVS can be realized while the difference of gains in different modes is reduced and the difficulty of loop design is reduced, and the optimal efficiency can be ensured.

The embodiment of the specification discloses a policy management method, device, storage medium and terminal. Based on the cache data execution policy, the near-end execution logic is adopted, so that the policy engine completes the full calculation locally in the system, and the real-time dependence on the remote service is released, and the end-to-end processing time is further compressed. By constructing a double-layer heterogeneous cache barrier, when the first cache is abnormal, the second cache is automatically switched to read the policy data, the automatic isolation of faults and the degradation of services are realized, and the service robustness and continuity are guaranteed. The bottom supporting mechanism of the double cache synchronously updated at a fixed time decouples data synchronization and use, and replaces real-time query with periodic batch synchronization. Through the closed-loop design of the whole process, the problems of high delay, single-point vulnerability and uneven resource load under the centralized architecture are systematically solved, and finally the policy execution capability with high performance and high availability is achieved.

The application discloses a current-type SVG control method based on improved DC bus voltage synchronization, which comprises the following steps: based on synchronous outer loop equivalent analysis, the current control type SVG is equivalent to a power synchronization loop based on a phase-locked loop synchronization loop; according to the relationship between the DC bus voltage of the SVG and the output active power, the power synchronization loop is equivalent to a DC bus voltage synchronization loop; on the basis of the DC bus voltage synchronization loop, an improved DC bus voltage synchronization outer loop that integrates a phase-locked loop is designed; a detection method based on the instantaneous reactive power theory is adopted to realize reactive current detection and complete the design of a reactive power compensation loop; a quasi-proportional resonant controller QPR and a proportional integral controller PI are adopted to design a current control inner loop; and the above loop designs are combined to jointly construct a control system of the current-type SVG, so that stable control of the current-type SVG is realized. The application can improve the stability under a weak power grid and help the stable grid connection and consumption of new energy.

The application provides a LMS-SOGI three-phase phase-locked loop design method and system suitable for a non-ideal power grid, and the method comprises the following steps: sampling three-phase grid-connected voltages of a grid-connected inverter to obtain voltage components through Clark transformation; the voltage components are respectively sent into two SOGI structures to extract positive sequence components of the grid-connected voltages; a least mean square LMS filter link mathematical model is constructed to design a least mean square LMS filter link step parameter; then, the positive sequence components of the grid-connected voltages are subjected to LMS filtering to obtain d-axis and q-axis positive sequence components of a fundamental frequency grid-connected voltage, the q-axis component of the fundamental frequency grid-connected voltage is subtracted by 0 to obtain a q-axis voltage phase-locked error signal, an output signal angular frequency adjustment amount ω is obtained through a PI controller, and a phase θ is obtained through integration. Finally, a three-phase grid voltage LMS-SOGI phase-locked model is built in MATLAB / Simulink simulation software, and different grid voltages are selected for comparative analysis of the filtering effect. The application solves the technical problem that the phase-locked technology of the grid-connected inverter is difficult to accurately lock the voltage frequency and phase in a specific scene.

The invention relates to the technical field of man-machine interaction, and discloses an AI man-machine cooperation loop design method, which comprises the following steps: analyzing a task target and decomposing a process structure, identifying a key decision node and a manual intervention node based on an analysis result, and generating a task framework; monitoring an AI execution state flow, extracting state features from the state flow to construct state representation, and generating a manual intervention trigger signal in combination with nodes of the task framework; packaging the context of the intervention request, pushing the packaged request to an artificial terminal, and receiving and integrating structured feedback from the terminal to generate an artificial decision instruction; fusing the AI reasoning result and the artificial decision instruction, recording an interaction sequence of the fusion process, and generating a collaboration session log; according to the collaboration session log and the task framework, dynamically adjusting collaboration rules among the nodes; the cooperative logic of AI execution and manual intervention can be accurately matched, the decision reliability and the overall efficiency of cooperation are effectively improved, and it is guaranteed that a task target is efficiently achieved.

The application belongs to the technical field of dehumidifiers, and discloses a variable-frequency dehumidifier temperature regulation system with step protection and EEV cooperative control, which realizes gradual protection through a three-stage step protection mechanism and dynamic threshold correction design; when first-stage early warning, fine-tuning parameters maintain low-load operation, when second-stage regulation, linkage heat dissipation auxiliary function is forced to cool down, and when third-stage emergency protection, the circuit is cut off to stop, thereby avoiding the impact of direct stop on the compressor, EEV and other core components, and prolonging the service life of the equipment; the protection threshold is corrected in real time by a decision fault-tolerant module according to the environmental temperature and humidity and equipment load, thereby reducing protection false triggering; through EEV double-PID cooperative control and compression linkage closed-loop design, the temperature control precision and heat exchange efficiency are improved; the EEV regulation module adopts temperature deviation PID and overheating degree PID dynamic weighted adjustment, combined with temperature fluctuation prediction mode, thereby avoiding the situation of evaporator frosting and condenser heat exchange efficiency reduction.

The invention discloses a flexible DC converter dual fault identification method comprising the following steps: taking a flexible DC converter as a research object, carrying out period division on collected voltage data, calculating to obtain a deformation value in each period, determining the characteristic ratio of different fault types according to the deformation value, and calculating the fault type according to the characteristic ratio; and amplifying the characteristic ratio to obtain a characteristic strip of the fault type, simulating open-circuit faults of IGBT tubes of different modules, forming a fault characteristic strip library, and realizing identification of double faults of the flexible DC converter. The method gets rid of dependence on an unstable data source; the fault recognition efficiency is improved by constructing a fault feature strip library; a targeted fault handling method is provided, and a closed-loop design from identification to processing is realized.

This invention discloses a novel design paradigm for phase-locked loops (PLLs) based on chaos theory, relating to the field of millimeter-wave radar integrated circuit technology. This design breaks away from the traditional approach of suppressing chaos in PLLs by actively introducing a controllable chaotic operating point. Through dynamic adjustment of loop bandwidth and modulation depth, it utilizes the characteristics of singular attractors to accelerate phase acquisition and stabilization. During the startup phase, the system enhances nonlinearity to enter a chaotic state for rapid locking, while suppressing nonlinearity in the steady-state phase to improve linearity and noise performance. This invention also integrates lock detection and feedback control mechanisms to optimize loop parameters in real time, significantly improving the tracking capability and robustness of the PLL in scenarios such as frequency-modulated continuous wave (FMCW), exhibiting both universality and scalability.

The application discloses a design method of a phase-locked loop based on a lookup table mode, and first constructs a standard sine table containing 1024 points, wherein the interval between each point corresponds to the time difference of the lookup table; if the sine lookup table time is T, and the input power grid voltage period is T, then: T=T+T / N; when the value of N is larger, the lookup table step length step is smaller, and the phase locking is more accurate. The error of the dynamic adjustment of the phase locking step length is adjusted by a PI controller, so that the error is minimized. After the error between the power grid voltage period and the phase locking period is transmitted into the PI controller, the dynamic compensation error required for the adjustment at the current time is obtained, and then the error is superposed on the step length, so that the final accurate phase locking step length is obtained. The phase-locked loop parameters can be quickly determined, and the calculation burden in the design process is reduced.

The application discloses a double-pulse test method for Econo module based on a drive and power loop, and is realized by a test circuit composed of an interface adaptation part, a power loop part, a drive circuit part and a measurement part, and specifically comprises the following steps: interface adaptation docking: an Econo module is directly docked with a special pin interface seat through a spring hole insertion mode, and the pin spacing and pin definition of the interface seat are completely consistent with the side pin of the module. The double-pulse test method for Econo module based on the drive and power loop, through special interface adaptation, short-path power loop design and independent drive control of the gate, realizes no switching connection of the test loop, effectively suppresses the parasitic inductance, eliminates the test error caused by the switching contact resistance, improves the precision and efficiency of dynamic parameter test of the Econo packaged IGBT module, and simultaneously reduces the operation difficulty and equipment investment cost.

This application provides a harmonic self-aligned voltage-controlled resonator and frequency synthesizer, belonging to the field of resonator technology. In this design, each port of a four-mode transformer is connected to a capacitor switch array to maintain capacitive symmetry between ports. A set of negative transconductance transistors is connected between the first and second ports of the four-mode transformer, and another set of negative transconductance transistors is connected between the third and fourth ports. The negative transconductance circuit provides negative resistance to compensate for the losses of the four-mode transformer. Each capacitor in the impedance balancing unit is connected to the two ends of the first and fourth ports to balance the impedance of each port of the four-mode transformer. A mode switching unit is connected between the second and third ports to control the switching of the local oscillator mode of the four-mode transformer. This application simplifies the phase-locked loop design of a quantum bit measurement and control system, improves phase noise performance in cryogenic environments, and provides a reliable local oscillator signal source.

This invention belongs to the field of signal synchronization technology in digital communication systems. It discloses a high-speed parallel bit synchronization loop design method based on FPGA. This invention adopts a collaborative design of parallel Farrow filter banks and grouped Gardner error detectors to significantly improve the throughput of bit synchronization loop calculation and overcome the limitation of FPGA clock rate on data processing. Through mean aggregation and k-fold phase error amortization mechanism, the multiple errors generated by parallel calculation are converged to a unified control word, which not only retains the efficiency of parallel architecture but also ensures loop stability. A parallel shift memory space and address pointer linkage mechanism is adopted, and the initial read position pointer is dynamically adjusted through feedback from a numerically controlled oscillator to achieve symbol phase deviation compensation without large-scale data copying. A 3*k depth parallel memory space is implemented through a shift register chain. With the multiplier multiplexing strategy, it is more friendly to hardware resources and easier to deploy in mainstream FPGA hardware.

The application provides a multi-loop low-dropout linear voltage regulator with fast transient response and high power supply rejection, which comprises a main feedback loop, an adaptive ripple elimination loop and a current feedback loop; the main feedback loop comprises a differential circuit, a summing circuit and a buffer; the adaptive ripple elimination loop comprises a first current detection circuit and an adaptive auxiliary amplifier, the first current detection circuit detects an output current to adjust the gain of the adaptive auxiliary amplifier; the current feedback loop comprises a second current detection circuit, a current mirror, a transistor MN11 and a capacitor C1; the application adopts a multi-loop design and comprehensively considers the transient response characteristics and the power supply rejection ratio of the linear voltage regulator; compared with a conventional low-dropout linear voltage regulator, the voltage regulator of the application is improved in the transient response and the power supply rejection ratio, has wider applicability and further improves the performance of a power supply module.

The invention provides a commercial vehicle piston steel closed-loop design method and a piston steel preparation method, and relates to the technical field of metal material calculation design and ferrous metallurgy manufacturing. The design method comprises the following steps: constructing a high-dimensional material database containing chemical components, process parameters and high-temperature thermophysical properties; a multi-head self-attention mechanism neural network model based on a Transform architecture is established, and nonlinear interaction between microelements V and Mo and matrix elements is accurately captured; an optimization model with the maximum yield strength at the high temperature of 500 DEG C and the maximum heat conductivity as double targets is constructed in a low-silicon constraint space through an NSGA-II algorithm, and global optimization is carried out. Through AI aided design and strict Si content control, on the premise that the Ni element is zero, the problems that traditional high-strength steel is poor in heat dissipation and high in cost due to high alloy content are solved, and the manufacturing method is suitable for manufacturing the high-explosion-pressure commercial vehicle engine piston.

The invention discloses a variable load active-disturbance-rejection joint motor control method and device based on RBF optimization, a medium and equipment, and the method comprises the steps: obtaining a target angle of a joint motor outputted by an upper controller, and carrying out the arithmetic subtraction operation based on the target angle and a rotor angle, and obtaining an angle error signal; parameters of an RBF neural network in the RBFADRC controller are initialized, and parameter updating is carried out on a third-order expansion state observer in the RBFADRC controller based on the ESO parameters; the target angle and the rotor angle are input into the updated RBFADRC controller, and a closed-loop control signal is obtained; taking the closed-loop control signal as the input of the MPC current inner loop module, and outputting a control parameter; and carrying out SVPWM (Space Vector Pulse Width Modulation) processing on the control parameters to obtain six paths of complementary and symmetrical PWM signals. According to the method, double-closed-loop design and intelligent optimization are achieved based on outer loop control of the RBFADRC controller and inner loop control of the MPC current inner loop module, and the control performance of the system under the variable load working condition is remarkably improved.

The invention relates to the technical field of semiconductor automatic testing, in particular to a PMU and reference voltage source dual-function circuit based on ATE testing, which comprises an AD5522 chip, a function switching module, a multi-DUT extension module, a precision optimization module and a control module, a single chip function multiplexing design is adopted as a whole, the pain point of large PCB space occupation is solved, the effect of remarkably reducing the space is achieved, the pain point of high DUT test cost is solved through a single-path PMU multi-DUT expansion design, the effect of remarkably reducing the test cost is achieved, the problem of low reference voltage precision is solved through a Kelvin four-wire and feedback closed-loop design, and the test efficiency is improved. And the problem of poor function flexibility is solved by relay switching and programming control design.

The present application belongs to the field of structural mechanics nonlinear response regulation, and specifically provides a nested grid structure for regulating torque-axial force conversion and an optimization design method, establishes the configuration description of the nested grid of the inner and outer layers, generates a three-dimensional model by using CAD, carries out finite element quasi-static simulation under the given axial constraint and torsional loading conditions, extracts the torque-axial force relationship curve to construct a data set, trains a deep operator network proxy model based on the data set, realizes the rapid prediction from the structure parameters to the whole response curve, adopts the reverse parameter solving strategy of discrete configuration enumeration combined with continuous parameter gradient optimization to obtain the optimal structure parameters, and back-substitutes the optimization results into CAD / finite element for rechecking and verification, thereby forming a closed-loop design method of simulation data-proxy prediction-reverse optimization-high-fidelity rechecking. The present application realizes the programmable mapping between the torque input and the axial force output, and realizes the efficient reverse solution and programmable regulation of the target curve under the constraint conditions such as parameter boundary.

The application discloses an automatic management system for potted plant irrigation, and relates to the technical field of agricultural automation. The system comprises a fertilizing robot and a fertilizer mixing workstation. The fertilizing robot is provided with a lifting linear module, a rotary mechanical arm and a fixed-inclination spray head. A controller calculates the target distance based on visual recognition, and when the target exceeds the length of the mechanical arm, a fluid jet ballistic compensation mode is activated, the vertical height of the spray head and the output power of the pump body are cooperatively adjusted, and the fluid projection model is used to cover the remote target. The fluid system adopts a double-loop design, has a tangential self-circulation stirring function and an alternating cleaning function cooperated with the valve pump, and effectively prevents sedimentation and spray head blockage. In addition, the system adopts a segmented homing strategy combining visual servo and blind insertion, and physically docks through electrical and mechanical double signal confirmation. The application solves the problems of limited working range of the fixed mechanical arm and easy blockage of the pipeline, and significantly improves the adaptability and reliability of the fertilizing operation.

The application discloses a motor torque control method in a stall hysteresis clamp system, comprising: using a motor position control to replace a torque output method to reduce the influence of a clamp transmission mechanism hysteresis characteristic; in view of the high requirement of a brake system on safety, a redundant design is made on a control system, and meanwhile, the control system load needs to be reduced, and the demand of system control resources is reduced; due to the bumping and impact during vehicle operation, the method of the application reduces the use of force sensors during vehicle operation to avoid the influence of the environment; precise control of the final clamping force is realized through motor position control; a proportional-integral (PI) control algorithm is used to realize motor outer loop design; and motor control is realized by using a magnetic field oriented control (FOC) and a space vector pulse width (SVPWM) modulation method.

The invention discloses an automatic electric charge returning and supplementing method and system based on multi-source data, and belongs to the technical field of computers. Attribution deviation caused by data splitting in the traditional technology is eliminated through systematic fusion of multi-source data, the timeliness and adaptability of operation state evaluation are ensured through a dynamic updating mechanism of an equipment state analysis model, and misjudgment caused by the fact that the equipment aging trend is not included in analysis is avoided; objective quantification of responsibility weight is realized through a joint analysis architecture of abnormal mode recognition and a return and supplement responsibility analysis model, so that influence degrees of different inducements such as equipment defects and environmental disturbance are distinguished, and the problem of high subjectivity of responsibility distribution is solved; the integration of the return and supplement strategy generator and the automatic execution link thoroughly replaces the manual coordination process, the return and supplement processing period is remarkably shortened, and meanwhile, the consistency and traceability of the processing result are guaranteed through the decision closed-loop design.

The invention discloses a Bang-Bang charge compound control circuit and control method based on double-ring competition, and belongs to the technical field of switching power supplies. Comprising an LLC resonant converter and a control circuit, and the control circuit comprises a voltage loop feedback circuit, a current loop feedback circuit, a double-loop competition comparison circuit, a Bang-Bang charge control logic unit, a driving circuit and a sampling circuit. Aiming at the problems of low dynamic response speed, complex compensation network design and the like of frequency modulation control or pulse width modulation of a traditional LLC converter, a brand new control concept based on Bang-Bang charge control is provided, and a double-ring competitive control architecture is constructed on the basis to meet the requirements of constant voltage and constant current of an LED illumination driving system. And the problems of loop conflict, compensation network dynamic characteristic mismatching and the like in the system design process are solved, so that the LLC converter has quick dynamic response, simplified loop design and undisturbed automatic switching capability between constant voltage / constant current modes in the constant voltage and constant current application.