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33results about How to "Eliminate shock" patented technology

Power supply zero perception switching method and system based on phase real-time tracking

The invention relates to the technical field of electric power, in particular to a power supply zero-sensing switching method and system based on phase real-time tracking, and the method comprises the following steps: collecting the communication connection state of each inverter node in a micro-grid group, constructing a communication topology model of the micro-grid group, and analyzing a sparse communication connection relationship among the nodes in the communication topology model, and generating a Laplacian matrix reflecting node connectivity according to the sparse communication connection relationship. According to the method, the system state can be comprehensively evaluated from the two dimensions of external alignment precision and internal stability, and misjudgment caused by a single index is avoided. Dual errors are input into a switching stability evaluation model to calculate a stability index, and a switching instruction is generated only when the index exceeds a grid-connected permission threshold value, so that quantitative decision and strict control of a grid-connected opportunity are realized, and the micro-grid and a main grid are highly synchronous in phase and frequency at the moment that a circuit breaker is closed; and transient impact and circulation at the switching-on moment are eliminated.
Owner:NINGBO OURILI ELECTRIC MFG

Method and system for controlling synchronized motion of robots based on decoupling of multiple heterogeneous components

PendingCN122703527Aavoid jitterReduced integration complexity
The application provides a kind of control method and system of robot synchronous movement based on multiple heterogeneous components decoupling, it is related to robot technical field;The method accesses heterogeneous hardware with uniform interface, establishes the standardized capability description containing coordinate system, constructs uniform space mapping between components, includes the same space reference with robot and target object;Uniformly encode the generalized state vector of each component motion degree of freedom, calculate the generalized jacobian matrix combined with task target, assign weight in generalized null space according to task priority, calculate synchronous control quantity and complete safety boundary verification;Convert the verified high-order geometric path into time synchronization trajectory conforming to the three-order control limit, issue execution unit and close-loop correction.The application solves the problems of poor universality, difficult integration and reuse, full-body synchronous movement of chassis and operating arm that cannot realize space-time reference unification, and lack of unified safety verification and data recording, effectively improves operation accuracy, operation safety and system maintainability.
Owner:NINGBO JUNPU ARTIFICIAL INTELLIGENCE & HUMANOID ROBOT RESEARCH INSTITUTE CO LTD

Quantitative shakeout device for magnesium alloy sand mold casting

The magnesium alloy sand mold casting quantitative shakeout device comprises a sand box, a partition plate is fixed in the sand box, the partition plate vertically penetrates through an opening and is communicated with a sand leakage pipe, the sand leakage pipe is provided with a controller, the magnesium alloy sand mold casting quantitative shakeout device further comprises a sand measuring box fixedly connected to a sand measuring area, and the sand measuring box is of an upper opening structure; the bottom of the sand measuring box is matched with and vertically connected with a bottom plate in a sliding mode, the bottom plate is of a through opening structure and is communicated with a sand discharging pipe, the sand discharging pipe penetrates through and is connected to the sand box in a sliding mode, the sand measuring box is further connected with a sand locking plate in a sliding mode, and the sand locking plate is used for being inserted into the sand discharging pipe. The sand metering box is fixed in the sand metering area to close or disconnect the sand discharging pipe, a vertical linear driving part is further fixed in the sand metering area, and the driving end of the vertical linear driving part upwards penetrates through the sand metering box and is connected to the bottom plate. The technical problem that an existing quantitative shakeout mode cannot guarantee the quantitative precision can be solved.
Owner:CHONGQING INST OF NEW ENE STOR MATER & EQUIP

Self-healing parallel capacitor aging test device and method for AC power system

The invention discloses a self-healing parallel capacitor aging test device and method for an AC power system. The method comprises the following steps: S1, preparation before test; s2, carrying out a first-stage aging test; s3, carrying out a charge-discharge cycle test; s4, performing a second-stage aging test; and S5, detecting after the test. According to the self-healing parallel capacitor aging test device and method for the alternating-current power system, automatic control over the whole test process is achieved, it is guaranteed that test conditions meet the national standard requirement, the influence and closing impact on a power grid in the test process are eliminated, the accuracy and reliability of a test result are improved, and the test efficiency is improved. A standardized method is provided for performance evaluation of the capacitor, and the problems that an existing test device is low in integration and automation degree, poor in test precision, large in power grid influence and insufficient in safety protection are solved.
Owner:ZHEJIANG FANGYUAN ELECTRICAL EQUIP TESTING

Vehicle preheating control method, device, equipment and computer readable storage medium

PendingCN122275697Aeliminate shockeliminate wear and tearElectrical batteryWorking pressure
This invention provides a vehicle preheating control method, apparatus, device, and computer-readable storage medium, comprising: receiving a battery preheating command; responding to the battery preheating command, controlling the vehicle's heating unit to heat the vehicle's battery; during the heating process, acquiring the battery's state parameters; and, based on the state parameters, determining that the battery meets preset conditions, controlling the vehicle's hydraulic pump to establish working pressure, and based on the working pressure, achieving hydraulic oil temperature rise. This decouples the contradiction between insufficient battery performance at low temperatures and the cold start impact of the hydraulic system, avoids the risk of damage caused by forcibly loading before the battery's capacity is sufficient, and eliminates the impact and wear caused by direct pressure build-up of the hydraulic pump, thereby achieving safe and efficient system-wide coordinated preheating.
Owner:SHANGHAI HUAXING DIGITAL TECH

Tea bag conveying buffer device

ActiveCN224428866UReduce initial fall speedeliminate shockMechanical engineeringTea leaf
The utility model relates to the technical field of tea packaging equipment discloses a tea bag conveying buffer device, including the buffer channel of oblique shape, can guide the inner package tea bag to slide along the buffer channel steadily, this process effectively reduced the initial falling speed of inner package tea bag, laid the foundation for subsequent buffer processing. When the inner package tea bag slides out from the buffer channel, will contact with the arc plate, in the moment of contact, the movement direction of inner package tea bag is not only changed to slide along the arc surface to the bottom, and the arc plate will absorb the kinetic energy of inner package tea bag through slight shaking of itself, so that inner package tea bag eliminates the impact force completely after passing through the arc plate, finally falls to the workstation steadily with nearly zero impact.
Owner:GUIZHOU WUTANG TEA BIOTECHNOLOGY CO LTD

A casting device for producing wolfberry lutein ester soft candy

ActiveCN224268151Uprevent continuous consumptionavoid wastingConfectionerySweetmeatsExhaust valveExhaust pipe
This utility model relates to the field of gummy candy production technology and discloses a casting device for producing goji berry lutein ester gummy candies. It includes a material storage tank, an exhaust pipe fixedly installed at the upper end of the material storage tank, an exhaust valve disc fixedly installed at the inner side of the exhaust pipe, the exhaust valve disc having an annular cross-section, a sealing disc second at the upper end of the exhaust valve disc, a limiting rod second fixedly installed at the upper end of the sealing disc second, the upper end of the limiting rod second extending to the outside of the exhaust pipe, a gas conveying pipe second fixedly installed at the upper end of the exhaust pipe, and a gas storage cylinder fixedly installed at one end of the gas conveying pipe second. The technical effect is to automatically adjust the gas pressure inside the storage tank, avoiding casting pressure fluctuations caused by a drop in syrup level, ensuring consistent weight for each gummy candy, eliminating the impact of pressure fluctuations on the storage tank seals, reducing seal wear and leakage risks, and maintaining a slightly positive pressure environment inside the tank by injecting inert gas into the sealed cavity.
Owner:QINGHAI ZIBOKAI BIOLOGICAL PROD

A high speed pusher case packing system

PendingCN122232945Aeliminate shockeliminate vibrationIndividual articlesClassical mechanicsCarton
This invention discloses a high-speed side-push type carton packing system in the field of packaging equipment technology, including: a frame and a feeding and conveying mechanism, a stacking mechanism, a storage mechanism, an opening mechanism, a packing mechanism, and a sealing mechanism mounted on the frame. The opening mechanism is used to pick up the packaging cartons stacked on the storage mechanism and unfold them so that the opening of the packaging carton faces horizontally. The packing mechanism includes a support and a push plate, a limiting baffle, and a first driving component mounted on the support. This invention abandons the traditional vertical gravity unloading method and instead adopts a side-push horizontal packing method. The first driving component precisely controls the push plate's movement, smoothly pushing the vertically stacked items from the side into the unfolded packaging carton, eliminating the impact and vibration generated during the free fall of materials, avoiding the risk of breakage of fragile items during packing, and ensuring the consistency and integrity of the product's posture before and after entering the carton.
Owner:HEFEI LONGYAN SMART TECHNOLOGY CO LTD

Gas distributor for heat exchanger

The invention relates to the technical field of heat exchangers, and discloses a gas distributor for a heat exchanger, the gas distributor comprises a shell, the lower surface of the shell is detachably provided with a buffer block, the lower surface of the buffer block is detachably provided with a reactor, the lower surface of the reactor is fixedly connected with a base, and the base is fixedly connected with a gas inlet. The inner wall of the reactor is fixedly connected with a plurality of groups of baffle plates, the lower surface of the shell is fixedly connected with a sealing ring, the inner wall of the buffer block is provided with a sealing groove I which is matched with the sealing ring to slide, a plurality of groups of graphite pipes are detachably mounted in a circle in the reactor, and the inner wall of the buffer block is fixedly connected with a pore plate. And through holes are formed in the center of the buffer block and the inner wall of the pore plate. The water-coal gas enters the equipment through the shell, and at the moment, the gas enters the reactor through the buffer block, so that the purposes of buffering and absorbing pressure fluctuation, stabilizing the pressure and flow of output gas flow, eliminating the impact of pulsation on the equipment and improving the reaction efficiency can be achieved.
Owner:NINGXIA AOBOTE ENVIRONMENTAL PROTECTION EQUIPMENT TECHNOLOGY CO LTD

A self-balancing lower limb exoskeleton robot compliant walking control method

This invention provides a compliant walking control technology for a self-balancing lower limb exoskeleton robot. The technology includes simplifying the lower limb exoskeleton robot into an inverted pendulum model and obtaining the expected center-of-mass trajectory and expected landing point trajectory from the pre-planned control program. Based on the inverted pendulum model, the expected center-of-mass trajectory, and the expected landing point trajectory, dynamic calculations are performed to obtain the expected ankle joint torque. The actual ankle joint torque of the lower limb exoskeleton is measured, and the difference between the actual and expected ankle joint torques is calculated. Based on the difference between the actual and expected ankle joint torques and the exoskeleton walking control strategy using a fractional-order viscoelastic model, a center-of-mass compensation amount is calculated. The sum of the expected center-of-mass position and the compensation amount, along with the expected landing point position, are input into an inverse kinematics solver to obtain the joint angles during lower limb exoskeleton walking. This invention improves the flexibility and compliance of the robot's control strategy.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI

Display user personalized setting method and system based on face recognition

The invention discloses a display user personalized setting method and system based on face recognition, and relates to the technical field of data processing, and the method comprises the steps: obtaining a facial feature flow, recognizing the identity of a user, and calling an individual baseline vector as a zero reference; calculating a difference value between the facial feature flow and the baseline vector to obtain a real-time deviation flow; injecting the deviation flow into an energy integration barrel according to dimensions, and performing energy accumulation in combination with a dissipation factor to obtain a real-time liquid level height; monitoring the liquid level height of each barrel, if the liquid level height exceeds a preset overflow threshold value, performing competitive arbitration based on an excess overflow rate, and determining a dominant adjustment vector; and mapping the advantage adjustment vector to a display parameter space, and changing parameters along a linear iteration track until each liquid level is lower than a threshold value. Through an energy accumulation and competitive arbitration mechanism, smooth and accurate adjustment of multi-dimensional display parameters is realized, and the user comfort and the interaction stability are improved.
Owner:SHENZHEN OSTAR DISPLAY ELECTRONIC CO LTD

A sliding rod linkage three-state transformation wheelchair mechanism

ActiveCN224421319UEliminate motion lageliminate shockWheelchairDrive by wire
This utility model discloses a sliding rod-linked three-state transformation wheelchair mechanism, including a backrest structure, a seat structure, an armrest structure, a posture transformation structure, a chassis structure, foot pedals, front wheels, and rear wheels. This utility model uses an electric push rod hinged at one end to the front chassis rod to drive a sliding rod to slide on a slide rail. Simultaneously, the sliding rod links two actuators: one pulls the sliding rod-backrest linkage rod connected to the backrest, causing the backrest support to rotate around the hinge axis between the backrest pivot and the seat pivot; the other pulls the movable ends of the rear and front links of a four-bar linkage mechanism, with the seat as the movable link and the frame end hinged and fixed to the side chassis rod. This synchronously drives the rotation of the backrest and the rotation of the rear and front links of the four-bar linkage mechanism, achieving coordinated transformation of the backrest angle and the seat posture. This utility model integrates a push rod-slide rail-linkage integrated power transmission chain, which can simultaneously decompose a single-point linear driving force into a composite action of backrest rotation and seat displacement.
Owner:HEBEI UNIV OF TECH

A single crystal polarization maintaining optical fiber based on intrinsic birefringence and a preparation method thereof

PendingCN122592550AStable birefringence propertiesHighly efficient birefringence properties
The application discloses a single-crystal polarization-maintaining optical fiber based on intrinsic birefringence and a preparation method thereof, relates to the technical field of online car-hailing safety monitoring, and discloses the following technical scheme: the single-crystal fiber core of the optical fiber main body is integrally grown from a sapphire, lithium niobate and yttrium vanadate uniaxial crystal, the traditional stress-induced birefringence structure is abandoned, the intrinsic birefringence effect of the crystal is utilized to realize polarization maintenance, the optical fiber axial direction and the optical axis of the crystal form a non-zero included angle of 5°-90°, the fiber core is coated with a low-refractive-index cladding layer, and the optical fiber can be stably operated in an extreme high-temperature environment of 500 DEG C or above for a long time. The single-crystal polarization-maintaining optical fiber prepared by the application has the advantages of strong birefringence stability, excellent high-temperature resistance and high polarization maintenance precision, and is suitable for high-end scenes such as high-temperature sensing, optical transmission in extreme environments, and optoelectronic detection in aerospace.
Owner:JIANGSU JINGYING PHOTOELECTRIC TECH CO LTD

Axial flow pump with double mechanical seal

The utility model relates to the technical field of axial flow pump, and disclose a kind of axial flow pump using double-end face mechanical seal, including pump shell, the upper portion of pump shell is equipped with fixed shell, the upper end of fixed shell is equipped with motor, and the output end drive connection of motor towards fixed shell inside is equipped with rotating shaft, and rotating shaft is at the connecting place of fixed shell and pump shell and is provided with double-end face mechanical seal assembly, and water hammer elimination mechanism consisting of first chamber and second chamber is set in the connecting sleeve of fixed shell, using the cooperation of first chamber side inverted conical structure, bottom port sectorial resistance block, inner inclined limit rod and spring, when water hammer rushes to first chamber, sectorial resistance block is preliminary buffered under the extrusion of spring, and then the water hammer of second chamber from the gap between sectorial resistance block is secondarily buffered by sealing resistance block, effectively eliminate the impact force generated by water flow in pump shell water outlet elbow pipe part, avoid the damage caused by impact force to axial flow pump and pipeline, improve the use safety and stability of axial flow pump and pipeline.
Owner:HANGZHOU INDUNA PUMP CO LTD

A stage equipment adaptive variable speed planning method

PendingCN122593448AImprove comfortImprove psychological immersion
The present application provides a stage equipment adaptive variable speed planning method, comprising the following steps: S1: real-time acquisition of the total mass of the equipment load including the weight of the audience, calculation of the load coefficient, and acquisition of the mapping model of the load-comfort threshold; S2: when the load coefficient rapidly mutates, i.e. step change, asymmetric low-pass filtering is performed on the acceleration and jerk to prevent the jump of the speed command; S3: receiving the rhythm factor from the performance general control system, temporarily increasing the scaling value of the acceleration and jerk within the safety limit; S4: updating the comfort state quantity, and performing S-type speed curve improvement with limited jerk. The stage equipment adaptive variable speed planning method significantly improves the physiological comfort and psychological immersion of the audience under the premise of ensuring the safe operation of the equipment, and takes into account the artistic expressiveness of the performance.
Owner:BEIJING BEITE SHENGDI TECH DEV CO LTD

A soft switching control circuit and control method for a power conversion device

PendingCN122092640AEliminate ablationeliminate shockPower conversion systemsSoft switchingControl theory
This invention discloses a soft-switching control circuit and method for a power conversion device, electrically connected to both the power conversion device and an AC power supply. It includes a first relay and a second relay, with the power conversion device electrically connected to the AC power supply sequentially via either the first relay and the second relay or sequentially via the second relay and the first relay. The two ends of the second relay are connected in parallel to the two pins of a thyristor. The invention also includes a controller electrically connected to the first relay, the second relay, and the thyristor. The beneficial effect is that it ensures that both series-connected relays are in a zero-current or near-zero-current state at the instant of closing and opening. This fundamentally eliminates the huge surge current and arc erosion and impact on the contacts caused by traditional switching methods.
Owner:浙江华昱欣科技有限公司

An experimental device for microbial strain proportioning

ActiveCN224411739Ueffective depolymerizationImprove migration speedBiotechnologyMicroorganism
The utility model relates to microorganism strain proportioning technical field discloses a kind of experimental devices for microorganism strain proportioning, including jar body, installation position is opened in jar body;Mixed component, mixed component is set in jar body, and mixed component is used to proportion and mix to microorganism strain, and mixed component includes driving motor, movable frame, auger shaft and fixed block, driving motor is fixedly connected with jar body, movable frame is set in jar body, movable frame is drivingly connected with driving motor, auger shaft array is set in jar body, each auger shaft is drivingly connected with driving motor, multiple fluid effects are formed by the cooperation of mixed component internal parts, under the cooperation of multiple fluid effects, avoid in stirring Large amount of foam covers liquid surface to hinder oxygen dissolving, lead to aerobic bacteria growth is limited;Foam layer hinders liquid flow, causes local strain or nutrient concentration difference;Foam occupies reactor space, reduces actual utilization rate and other problems.
Owner:NINGXIA SHENGYUAN AGRI TECH CO LTD

A rapid collection device for muck of a shield tunneling machine

ActiveCN224717698Uefficient collectionPromote job elimination
The utility model discloses a kind of quick collection devices of shield machine out of cave muck, it belongs to tunnel construction technical field, including box structure, frame structure, hoisting structure and overhead structure, box structure includes bottom plate, front baffle and back baffle being set in the both ends of bottom plate and the side plate being set in the both sides of bottom plate and respectively connected in front baffle and back baffle, bottom plate, front baffle, back baffle and side plate are collectively enclosed to form semi-closed slag receiving space;Stop structure is fixed to back baffle outside, for eliminating muck impact;Frame structure is fixed to the outer periphery of box structure, for reinforcing box structure;Hoisting structure is set on box structure, hoisting structure is used to connect hoisting sling;Overhead structure is fixedly connected to the bottom of bottom plate, for lifting box structure, to form operating gap between box structure and placement surface. The quick collection device of shield machine out of cave muck is set on receiving base, perfect fit cave door structure.
Owner:TENGDA CONSTR GROUP CORP

Brake energy recovery resistor device and control method under high soc of new energy vehicle

PendingCN122354237AAvoid insufficient braking power problemsIncreased braking safetyElectrical batteryNew energy
This invention relates to the field of vehicle control for new energy vehicles, specifically to a braking energy recovery resistor device and control method for new energy vehicles under high SOC conditions. The device includes a vehicle control unit (VCU), a battery management system (BMS), a multi-function device, a high-voltage wiring harness, a drive motor, a braking resistor control unit, a braking resistor module, a temperature sensor, a cooling module, and a high-voltage contactor. The BMS and the multi-function device are communicatively connected to the VCU. The braking resistor control unit is also communicatively connected to the VCU. The multi-function device is connected to the power battery, drive motor, braking resistor module, and high-voltage wiring harness. The control terminals of the multi-function device and the braking resistor control unit are connected, enabling real-time information exchange and intelligent control. This invention aims to achieve uninterrupted electric braking under high SOC conditions, stable bus voltage, battery overcharge protection, long-term reliable resistor operation, and improved braking smoothness and safety.
Owner:ZHEJIANG UFO AUTOMOBILE MFG CO LTD +1

Compact spring return actuator

This invention relates to a compact spring return actuator, and more particularly to an actuator for emergency reset of a valve in the event of an emergency such as a power outage. The actuator is equipped with differential planetary gear reducers in both the drive shaft (operated by a motor) and the working shaft (operated by an elastic body of the emergency reset assembly), and these differential planetary gear reducers are meshed together. This duality allows the power transmission of the motor and the elastic body to be independent of each other, thereby reducing motor capacity and miniaturizing the components of the power transmission system. Ultimately, this results in a compact spring return actuator that is lightweight and miniaturized as a whole. To achieve the objectives described above, the compact spring return actuator of the present invention is characterized by comprising: a drive shaft that receives power from a motor and rotates; a driven shaft that rotates by means of the drive shaft and opens and closes a valve; a reduction assembly that reduces the rotational force transmitted to the driven shaft, including a differential planetary gear reducer mounted on the drive shaft; and an emergency reset assembly equipped with an elastomer and a working shaft that converts the elastic force of the elastomer into a rotational force for transmission and engagement with the differential planetary gear reducer, for rotating and resetting the valve when the power is disconnected.
Owner:I TORK CONTROLS

Low-power-consumption full-step-up-ratio boost circuit and control method thereof

PendingCN122001184ASolve the technical pain points that make it difficult to implement ZVSeliminate shockEfficient power electronics conversionDc-dc conversionCapacitor voltageHemt circuits
The invention relates to the technical field of direct current boost, in particular to a boost circuit with low power consumption and a full step-up ratio and a control method thereof. Synchronous on-off of the main switch tube and the auxiliary switch tube is controlled, half-cycle free oscillation of the resonant capacitor, the auxiliary capacitor and the resonant inductor is combined, the voltage of the resonant capacitor is forced to reverse and is stabilized at the input voltage Vin, and it is ensured that the drain-source voltage of the main switch tube gradually rises from zero to the output voltage Vout at the moment that the main switch tube is turned off; the turn-off voltage impact and the switching loss are thoroughly eliminated, the effect is not influenced by the step-up ratio value, and the technical problem that the ZVS is difficult to realize under the low step-up ratio of a traditional boost circuit is solved.
Owner:CHONGQING YUXIN MICRO INFORMATION TECH CO LTD

Full-automatic intelligent cleaning device for large blocks of screen water beam of rotary kiln set and working method of full-automatic intelligent cleaning device

The invention relates to the technical field of treatment of abnormal chunks at outlets of pellet rotary kilns, and particularly discloses a full-automatic intelligent cleaning device for chunks of a screen water beam of a rotary kiln set and a working method. A rotary kiln door opening and closing system is mounted at a kiln door of a rotary kiln head, and the screen water beam is mounted on the inner side of the kiln door of the rotary kiln head; large materials falling from an outlet of the rotary kiln are received on the screen water beam, a foreign matter crushing device and a clamp taking-out device are installed on the rotary kiln platform, and the foreign matter crushing device and the clamp taking-out device are arranged outside the kiln door side by side; the foreign matter crushing device comprises a first hydraulic shear and a second hydraulic shear, a shear structure is formed between the first hydraulic shear and the second hydraulic shear, and a first hydraulic cylinder and a second hydraulic cylinder control the first hydraulic shear and the second hydraulic shear to clamp and shear large materials on the screen water beam; the clamp taking-out device comprises a clamp and a mechanical arm, and the mechanical arm controls the clamp to clamp out large materials on the screen water beam. The operation efficiency is improved, and the operation safety risk is reduced.
Owner:SD STEEL RIZHAO CO LTD

Localized AC and DC power supply isolation output switching device

The invention belongs to the technical field of power supply management, and particularly provides an alternating current and direct current power supply isolated output switching device, which comprises a power supply input and preprocessing module used for accessing an alternating current main power supply and a direct current standby power supply and performing preprocessing protection on the two power supplies respectively; the power supply detection and control module is used for acquiring electrical parameters of the alternating-current main power supply and the direct-current standby power supply in real time, judging a power supply state of the power supply according to an acquisition result and outputting a control signal; the relay isolation switching module comprises two relays respectively corresponding to the main power supply branch and the standby power supply branch, and realizes physical isolation and automatic switching of the AC / DC power supply based on the control signal; the output adaptation and protection module is used for providing a corresponding output branch according to the load type and protecting an output power supply; wherein the two relays adopt an interlocking design to ensure that the two relays are not conducted at the same time.
Owner:AVIC EAST CHINA OPTOELECTRONICS CO LTD

Closed hydraulic system of hydrogen compressor

The invention relates to the technical field of hydrogen compression and hydraulic drive, in particular to a hydrogen compressor closed hydraulic system which comprises a hydraulic oil tank, a double-output-shaft drive motor, a closed pump, a hydraulic drive gas supercharger, a four-quadrant pump and an energy accumulator. The closed pump and the supercharger form a closed loop, and oil supplementing and flushing functions are integrated in the closed loop. And the four-quadrant pump is connected to the other end of the motor and is connected with the energy accumulator. Load is monitored in real time through a pressure sensor, in the reversing or low-load stage, a four-quadrant pump is controlled to be in a pump working condition, residual power of a motor is absorbed, and an energy accumulator is charged; and in the high-load compression stage, the four-quadrant pump is controlled to be in a motor working condition, and energy of the energy accumulator is released for auxiliary driving. Throttling loss is eliminated, constant-power operation of the motor is achieved through peak clipping and valley filling of energy, the problem of impact on a power grid is solved, meanwhile, the system structure is compact, and the energy efficiency is remarkably improved.
Owner:HANFU IND EQUIP (JINAN) CO LTD

Heavy hydraulic machine proportional servo flexible energy-saving control hydraulic system

The utility model discloses a kind of heavy hydraulic machine proportional servo flexible energy-saving control hydraulic systems, belong to heavy hydraulic machine technical field, this kind of heavy hydraulic machine proportional servo flexible energy-saving control hydraulic system, including oil cylinder, oil cylinder includes oil cylinder control valve group unit, pipeline pressure relief valve group unit and return control valve group unit, oil cylinder control valve group unit, pipeline pressure relief valve group unit and return control valve group unit inside are provided with proportional cartridge valve;Oil cylinder further includes main pump group control unit and pilot control unit, displacement sensor is respectively arranged in main pump group control unit and pilot control unit, and oil cylinder control valve group unit and pilot control unit are electrically connected with pipeline pressure relief valve group unit and return control valve group unit respectively, oil cylinder control valve group unit and pilot control unit are electrically connected with pipeline pressure relief valve group unit and return control valve group unit respectively by control circuit, to realize collaborative control.
Owner:TIANJIN TIANDUAN PRESS CO LTD

Method and system for treating anthraquinone-based dyeing pigment wastewater based on multi-stage cooperation

ActiveCN120943463Bimprove propertieseliminate shock
The present application relates to a kind of anthraquinone-based dyeing pigment wastewater treatment method and system based on multistage cooperation, belong to industrial wastewater treatment technical field, solve the problems of low COD removal rate, poor nitrification denitrification and difficult decolorization in the prior art of anthraquinone-based dye wastewater treatment method.The method comprises: respectively pretreating anthraquinone-based dye wastewater, azo pigment non-ink lake wastewater and azo pigment ink lake wastewater, the pretreatment of anthraquinone-based dye wastewater includes sequentially flocculation adsorption treatment, filter pressing dewatering treatment and ozone catalytic oxidation treatment;Mix the above wastewater and other wastewater in the factory area after pretreatment, carry out multistage biochemical intensification treatment to the obtained mixed wastewater;The mixed wastewater after biochemical intensification treatment is carried out sedimentation sludge-water separation, and the supernatant separated is carried out multistage physical and chemical synergistic treatment.The present application can improve COD removal rate and nitrification denitrification, decolorization effect.
Owner:SHANDONG YAXIN ENVIRONMENTAL PROTECTION TECH CO LTD

An online rolling optimization energy storage adaptive droop primary frequency modulation method and system

The present application relates to the technical field of power system frequency regulation and new energy grid-connected control, in particular to a kind of energy storage adaptive droop primary frequency modulation method and system of online rolling optimization, the method real-time acquisition system frequency deviation, frequency rate of change and energy storage state of charge;Adopt hot start strategy to inherit the population state of last cycle, and initialize the population of current cycle with the optimal solution neighborhood of last cycle;Through grey wolf optimization algorithm online rolling optimization, to solve optimal droop adjustment coefficient with the multi-objective comprehensive fitness function of frequency regulation performance index, energy storage SOC double threshold nonlinear square penalty and power smoothing term as target;First-order low-pass filter is applied to output to obtain dynamic droop coefficient, according to which the energy storage power reference instruction is calculated and charging and discharging is executed.The present application transforms grey wolf optimization algorithm from offline setting to online rolling optimization engine, realizes millisecond-level real-time response through hot start and simplified iteration, realizes the collaborative optimization of frequency modulation performance and energy storage safety through SOC square penalty, and significantly improves the working condition adaptive ability of system to photovoltaic fluctuation and load disturbance.
Owner:FUYANG NORMAL UNIVERSITY

A high-precision global fitting method and device based on dominant points

The application discloses a high-precision global fitting method and device based on dominant points, relates to the technical field of computer numerical control machining, and specifically comprises the following implementation steps: firstly, taking the cubic polynomial fitting error as the core basis, dominant points in a tool tip point set are adaptively screened; secondly, according to a point error constraint condition, part of the tool tip points are supplemented as new dominant points through an iterative mode, and then an initial B-spline curve is generated; finally, based on a chord error constraint criterion, part of the midpoints of straight line segments are iteratively supplemented as dominant points, and finally, a target B-spline curve is constructed. The global fitting method effectively optimizes the continuity of the path and the degree of restoration of geometric characteristics under the premise of strictly guaranteeing machining precision, provides a high-quality data basis and technical support for subsequent feed speed planning, and is favorable for improving the overall machining efficiency.
Owner:ZHENGZHOU AIRPORT ECONOMIC COMPREHENSIVE EXPERIMENTAL ZONE AIRPORT ARTIFICIAL INTELLIGENCE RES INST

Separable large angle track feeding device for middle hopper

The present application relates to the technical field of feeding device, and discloses a separable large-inclination track feeding device with a storage hopper, which is provided with a limiting switch assembly; when the moving trolley touches, the swing arm is first limited from rotating by the L-shaped push plate, the limiting switch base is forced to move horizontally as a whole, the bellows structure is compressed to perform one-stage elastic buffering, the gas in the bellows structure is filled into the air bag structure through the bellows connecting pipeline to make the air bag structure expand, the second-stage frictional damping buffering is generated by the contact between the air bag structure and the movable roller, when the rotating shaft connecting plate moves to the rotating shaft positioning groove, the L-shaped push plate rotates around the movable rotating shaft to release the constraint on the swing arm, the swing arm continues to rotate to trigger power-off, so that the non-impact flexible parking of the first linear buffering energy absorption and then the rotation power-off is realized, the inertia spilling caused by sudden stop, excessive wear of the brake and structural impact damage are eliminated, and the safety, stability and service life of the large-inclination heavy-load feeding device are significantly improved.
Owner:JIANGSU XINGOU INTELLIGENT MFG TECH CO LTD

A new energy outer sphere engine

PendingCN122504561AAchieving tightnessachieve lubricationWorking fluidRegenerative brake
A regenerative braking engine for new energy sources includes a casing, a heat regenerator, a working fluid cylinder, a working fluid piston, a working fluid piston rod, an upper limit ring, a lower limit ring, a receiver piston, an upper permanent magnet ring, a lower permanent magnet ring, a sleeve, a drive head permanent magnet ring, a heater, a transmission grease chamber, an outer spherical cylinder, an integrated connecting rod piston, a crankshaft, a crankcase, a pressure regulating plug, and a pressure regulating cylinder liner. The heat regenerator is fixedly connected to the top and inner wall of the casing. The heater is fixedly connected to the top of the heat regenerator. The working fluid cylinder is located below the heater and fixedly connected to the top of the heat regenerator. The receiver piston is floatingly connected to the lower end of the inner wall of the outer shell. The upper and lower permanent magnet rings are fixed inside the sleeve and fixedly connected to the upper part of the receiver piston. The driving head permanent magnet ring at the lower end of the working fluid piston rod extends into the working space of the upper and lower permanent magnet rings. The magnetic field directions of the upper and lower permanent magnet rings and the driving head permanent magnet ring are the same. A working gap is provided between the driving head permanent magnet ring and the upper and lower permanent magnet rings. The crankcase is fixedly connected to the outer shell, the outer spherical cylinder is fixedly connected to the crankcase, the lower end of the integrated connecting rod piston is hinged to the crankshaft, and the upper end passes through the outer spherical cylinder and enters the transmission grease chamber, where it is immersed in grease.
Owner:贾占东