17results about How to "Suppress shock" patented technology

This invention discloses a time-delay-resistant and energy-saving motion control method and system for a flat-type all-wheel-drive AUV. The invention includes: constructing a six-degree-of-freedom hydrodynamic model of the AUV based on submarine maneuverability theory; identifying the setpoint pure time delay and rotational acceleration characteristics of the propeller through multi-condition testing, and constructing a nonlinear propeller dynamic model including a pure time delay element and a nonlinear rotational speed dynamic response model; constructing a composite control architecture integrating a dual-loop PID controller, a Smith predictor, and a model reference adaptive controller (MRAC); using the Smith predictor to perform explicit time delay compensation for the vertical plane motion subsystem, and using MRAC to update the adaptive gain online to compensate for model mismatch. This invention effectively suppresses high-frequency pitch angle jitter, reduces ineffective commutation movements and energy consumption of the propeller, and significantly improves the high-speed operational stability and endurance of the flat-type AUV.

The application discloses a multi-period DBR super-radiation light-emitting diode structure with an ultra-wide spectrum width, wherein the upper surface of a P face electrode is divided into four areas, which are a light-emitting end ridge, an active multi-mode interference device, a plurality of non-light-emitting end ridges, a plurality of ridges with different period DBRs and an optical absorption area. The application effectively clamps the gain center wavelength through the multi-DBR structure, so that the center wavelength of the light emitted by the device is different, and then the problem that the spectrum is narrowed due to the fact that the photons close to the center gain wavelength are amplified more and the photons far away from the center gain wavelength are amplified less when the current is increased is effectively suppressed, so that the spectrum width of the device is effectively widened. The tilted ridge structure is adopted, the wide-spectrum antireflection film with a reflectivity less than 2% is deposited on the front and rear cavity surfaces, and the optical absorption area is formed on the non-light-emitting end of the device, so that the F-P oscillation is effectively suppressed through the above three methods, and the emitted light is ensured to be super-radiation light.

The application discloses a kind of pneumatic-tyre pantograph pantograph contact force compensation control method and device, the device includes: front position detection module, control module, drive module and pressure feedback module;Front position detection module includes front position contactor;Front position contactor is set to the front side of pantograph;The contact force between front position contactor and catenary is same with the contact force between pantograph and catenary;Control module is used to obtain bow net contact force;Control module calculates the target pressure value required in air bag according to bow net contact force;Control module is used to obtain the actual pressure value in air bag;Control module is also used to output proportional control signal to drive module according to target pressure value and actual pressure value;Drive module is used to control the opening of the electric control proportional valve of air bag, so that the pressure value in air bag tends to target pressure value.The technical scheme provided by the application is to realize accurate monitoring and compensation control to bow net contact force.

The application provides a wide-voltage-input industrial environment adaptive charging method and system, and relates to the technical field of charging control. The method comprises the following steps: collecting running parameters including input voltage in real time, analyzing fluctuation characteristics of the input voltage, and dividing the current input working condition level; based on the current input working condition level, generating an input-side constraint parameter set including alternating current current-limiting threshold and power climbing rate upper limit through a preset constraint parameter mapping relationship, and applying the input-side constraint parameter set to a control loop for constraint; determining a current charging stage and corresponding target charging current and voltage; when the working condition level changes, adjusting the target charging current based on available power; when the input voltage rebounds, restoring the target charging current according to a preset slope, and limiting the control loop. The application effectively solves the charging stability, continuity and availability problems under wide-voltage-input fluctuation by constructing an integrated control link.

The application discloses an ink circulating system for a 3D printing device and a 3D printing device, and aims to solve the problems of ink supply pressure fluctuation and surge. The system comprises a first ink bottle, a second ink bottle, a printing head, an ink supply and discharge system and a negative pressure device which are of the same structure. The negative pressure device provides different negative pressures for the two ink bottles, so that the pressure of the first ink bottle is higher than that of the second ink bottle, thereby driving the directional flow of the ink. Each ink bottle comprises a bottle body, a top negative pressure interface, a middle anti-surge sheet, a lower barrier sheet, a liquid level detection device, a bottom printing head connecting interface and an external ink interface. The anti-surge sheet is matched with the bottle wall gap and is provided with micropores, and the barrier sheet is also provided with micropores. Through the double damping structure in the bottle, the ink shaking and vortex caused by movement and the bubbles or oscillation generated by the flow of the ink are effectively inhibited, so that the printing head stably discharges the ink, and the system reliability, assembly convenience and operation continuity are improved.

The invention relates to the technical field of energy storage configuration of a direct-current flexible storage system, and discloses a light-storage direct-current flexible-oriented migration deep reinforcement learning multi-scene energy storage adaptive configuration method, system and device, and a medium, and the method comprises the steps: obtaining historical operation and device parameters, and constructing a typical operation scene set based on a clustering algorithm; constructing a double-layer Markov decision model; the upper-layer model takes the optimal annual comprehensive economic benefit of the system as a reward function, investment out-of-limit penalty is introduced, and the lower-layer model takes the optimal daily operation economic benefit as a reward function, and system security constraints are combined; a TD3 algorithm is improved based on a multi-scene migration strategy and a smooth constraint technology, a double-layer Markov decision model is solved, and a multi-scene energy storage adaptive configuration scheme considering investment benefits and operation benefits is formed. According to the invention, adaptive planning configuration of the energy storage capacity of the optical storage direct-flexible system can be realized under the condition of multiple scenes, the system investment and operation and maintenance cost are reduced, and the power supply reliability and operation economy of the optical storage direct-flexible system are improved.

The application provides a laser satellite network and a routing stability control method and controller thereof. The method comprises: acquiring current transmission rate levels and historical transmission rate levels of each laser inter-satellite link in the laser satellite network, wherein the transmission rate level is a limited number of discrete levels obtained by quantizing an instantaneous transmission rate; comparing the current transmission rate level with the historical transmission rate level to determine whether a link state changes; when the comparison result indicates that the link state changes, calculating a cost penalty according to a magnitude of the transmission rate level change, and resetting a stability count to an initial value; when the comparison result indicates that the link state does not change, incrementing the stability count, and calculating a cost reward according to the stability count; calculating a link cost according to a reference cost, the cost penalty and the cost reward; and selecting a data transmission path composed of one or more laser inter-satellite links from the plurality of laser inter-satellite links based on the link cost.

The application discloses a kind of based on raw material information feedback's weighing target value regulation and control system, specifically related to industrial automatic control technical field, raw material characteristic identification module exports characteristic feature group, its internal pre-set correlation screening model is according to feedback screening high correlation feature, constructs change matrix and generates dynamic compensation coefficient, and optimizes characteristic feature group output.Target value determination module determines weighing target value accordingly.After real-time weighing, deviation calculation module calculates the deviation of actual weighing and target value.Regulation and control execution module adjusts feeding equipment according to deviation, and uses dynamic compensation coefficient to correct adjustment amount, so that actual weighing approaches target value;The application constructs change matrix and generates dynamic compensation coefficient by screening high correlation feature, improves compensation pertinence;Regulation and control result is fed back to optimize characteristic identification, realizes self-learning closed loop;Dynamic compensation coefficient is used to correct adjustment amount, so that feeding equipment is self-adapting adjustment, significantly improves weighing precision, dynamic stability and repeatability.

The invention provides a loop parameter adaptive adjustment method, an energy storage aging test system and a medium. The loop parameter adaptive adjustment method is applied to an energy storage aging test system, the energy storage aging test system comprises at least two inverters, and the method comprises the following steps: controlling an inverter serving as a power grid end and another inverter serving as a load end to perform phase-locked grid connection; acquiring a first voltage instantaneous value of the inverter serving as a power grid end and a second voltage instantaneous value of a grid-connected port of the inverter serving as a load end; and based on an accumulated voltage error value of the first voltage instantaneous value and the second voltage instantaneous value in a preset statistical period, performing adaptive adjustment on parameters of a current loop at a grid-connected port of an inverter serving as a load end. According to the scheme, adaptive adjustment of the current loop parameters of the inverter at the load end can be realized, dynamic optimization of the control parameters in the aging test process is realized, and the stability and accuracy of the aging test are ensured.

The application relates to the technical field of point cloud registration, in particular to a positioning method for numerical control machine tool machining, which comprises the following steps: taking the curvatures of standard data points in a standard point cloud as machining complexity; obtaining a real-time point cloud of a raw material to be machined; in one iteration of an ICP algorithm, a transformation matrix of the real-time point cloud is updated with the minimum matching error as the target until the change of the minimum matching error between two adjacent iterations is less than a preset value or the iteration number reaches a maximum number, and the transformation matrix is taken as a target matrix; and the raw material to be machined is adjusted based on the target matrix to complete positioning. According to the technical scheme, the influence of the machining complexity of each position point on the machining allowance of a structural member can be considered, and accurate positioning of the raw material to be machined is realized.

The invention relates to the technical field of intelligent robot navigation and control, and discloses a parking lot inspection robot path planning method which comprises the following steps: step 1, acquiring parking lot environment information and constructing a multi-dimensional heterogeneous potential site map which comprises a physical barrier layer, a communication field intensity distribution layer and a risk probability distribution layer, meanwhile, global control parameters of path planning are reversely deduced and set on the basis of preset operation indexes, and the global control parameters at least comprise opportunity constraint confidence coefficients and stable gating threshold values. A global cost function of nonlinear coupling of risk revenue and communication quality is adopted, and multi-dimensional heterogeneous potential field map construction is combined, so that the technical effects of dynamically and preferentially planning a high-risk area and giving consideration to signal coverage are achieved, and quick response and value maximization to a temperature rise or smoke dangerous case in a finite time window are realized; the defect that high-risk hidden danger leak detection is caused by lack of elasticity of an existing static inspection route is overcome.

A method and device for managing link state in an MRP ring network, the method comprising: in an open loop state, in response to receiving a first MRP link state packet from any one of two ring ports of an MRM, starting a time window with the time of the receiving as the starting point; within the time window, in response to receiving a first MRP link state packet from the other of the two ring ports, and the link states indicated by the first MRP link state packets received by each of the two ring ports being different, determining the ring port receiving the first MRP link state packet first as a priority port, and determining the ring port receiving the first MRP link state packet later as a sub-priority port; before determining that the forwarding path is in a stable state, processing each MRP link state packet received from the priority port in turn, and not processing each MRP link state packet received from the sub-priority port, effectively suppressing the occurrence of ring network oscillation.

This invention provides an adaptive energy-saving control method and system for industrial environmental control systems based on large-scale model-based operating condition prediction, applied in the field of industrial data processing technology. It collects various types of data, including equipment, environmental, meteorological, and energy consumption data, and performs unified benchmarking, cleaning, and standardization preprocessing. Then, it constructs an operating condition identification model using time-series coding, sliding windows, and a large-scale model, classifying four operating conditions. Combining equipment limits, energy efficiency curves, and zoning requirements, it establishes a mapping relationship between energy consumption and control parameters, generating a multi-equipment collaborative control rule base. Relying on feedback closed-loop and adaptive PID algorithms, coupled with anti-jitter and load balancing mechanisms, it ensures stable system operation. Using energy consumption, environmental indicators, and equipment stability as evaluation criteria, it constructs a dynamic weighted loss function iterative optimization strategy to correct the model and control parameters. Finally, it issues control commands, retains data, and outputs reports, achieving intelligent energy-saving management throughout the entire process.

This utility model belongs to the technical field of single-disc check valves and discloses a single-disc check valve that reduces opening pressure. It includes a valve body, a valve seat, and a valve disc. A connecting plate is mounted on the valve seat, and the valve disc is mounted on the valve seat via a variable-diameter spring assembly and the connecting plate. The variable-diameter spring assembly includes at least three spring segments with different wire diameters, the wire diameter of which decreases progressively along the fluid direction. Each spring segment includes a first spring segment, a second spring segment, and a third spring segment. The first spring segment is connected to the valve disc, and the wire diameter variation gradient of the variable-diameter spring assembly is from 0.2mm to 0.15mm to 0.1mm, with the length ratio of the first, second, and third spring segments being 1:1.5:2. This utility model, through the progressive elasticity design of the variable-diameter spring assembly, the low-friction structure of the conical sealing surface, and the dynamic adjustment capability of the counterweight balance chamber, can comprehensively reduce the initial opening pressure while minimizing fluid energy loss, making it suitable for a wide range of media, from low-viscosity gases to high-viscosity oils.

The invention discloses a motor control type intelligent oil cylinder control method and device and a storage medium, and the method comprises the steps: calling a historical load database, extracting historical load data matched with the currently collected cylinder body temperature and hydraulic pipeline pressure, combining the operation state of a sealing element and the current hydraulic pipeline flow, pre-judging the current load working condition, and calculating the current load working condition; according to the pre-judged load working condition, hierarchical control unit division is executed, an oil cylinder hydraulic control module is divided into a basic bearing unit, a precise adjusting unit and an emergency compensation unit, the precision and efficiency of the pre-judged load working condition are improved, the deviation value of a target control parameter and a current core operation parameter is calculated, and the control precision is improved. And in combination with the pre-judged load working condition and the operation state of each control unit, differential adjustment control is executed, so that mechanical adjustment and oil cylinder adjustment are synchronous, adjustment lag and oil cylinder oscillation are avoided, and the adjustment process is stable and rapid.

This application provides a hybrid truck platooning control method based on multi-factor compensation, applicable to scenarios such as ports, logistics, and mines. The method first obtains the powertrain types and real-time loads of the leading and following trucks in the platoon. The leading truck continuously broadcasts information including its target acceleration, real-time acceleration, and load status via a vehicle-to-everything (V2X) network. Upon receiving this information, the following truck dynamically calculates a cooperative safe distance that fully considers both emergency braking risk and normal following oscillation risk, taking into account its own load and the powertrain types of both trucks. Then, based on the leading truck's target acceleration and considering powertrain differences and its own load, the system generates a target acceleration command for the following truck using a multi-factor compensation strategy. This application's method suppresses platooning oscillations and ensures a safe following distance by compensating for the response differences of different powertrains.

This invention relates to the field of electrical variable measurement technology, and more particularly to an electrical parameter sampling rate adjustment system for intelligent acquisition terminals, comprising: an electrical parameter measurement module for acquiring instantaneous phase voltage and current values ​​and calculating instantaneous apparent power; a transient disturbance measurement module for processing the instantaneous apparent power to obtain differential energy, and outputting transient change characteristic values ​​based on the differential energy and the local background mean; a measurement noise suppression module for inputting the transient change characteristic values ​​as observations into a Kalman filter, calculating the temporal variance of the innovation value sliding buffer queue, constructing an adaptive measurement noise covariance by combining the maximum local background mean within the historical window, dynamically adjusting the Kalman gain, and outputting a posterior state estimate; and a sampling clock adaptive module for calculating the target sampling rate for the next time step based on the absolute deviation of the posterior state estimate using a nonlinear compression mapping function. This invention improves the stability and accuracy of electrical parameter measurement.