26results about How to "Shock suppression" patented technology

The application relates to the technical field of tunnel construction, and discloses a combined segment structure, which comprises a UHPC segment and concrete test blocks, a plurality of concrete test blocks are arranged on the outer side surface of the UHPC segment in sequence along the curvature direction of the UHPC segment, the UHPC segment is provided with main reinforcement and stirrups, the main reinforcement is provided with a plurality of strips along the curvature direction of the UHPC segment, a plurality of stirrups are sequentially sleeved on the plurality of main reinforcement and are connected with the main reinforcement through binding, the concrete test blocks are provided with transverse steel bars and longitudinal steel bars, the transverse steel bars extend to the outside of the concrete test blocks and are overlapped with the stirrups, and the longitudinal steel bars extend to the outside of the concrete test blocks and are overlapped with the main reinforcement. Compared with the prior art, the structure design realizes optimal control of material cost by filling the concrete test blocks in the non-key stress area under the premise of hardly sacrificing the core performance of UHPC materials such as strength, durability and stress condition, and effectively eliminates the core economic obstacle in the popularization process of the UHPC shield segment.

This invention discloses a virtual synchronous low-voltage ride-through control method and system for wind turbines with energy storage coordination. The method includes: real-time acquisition of operating parameters of the wind turbine grid connection point and the energy storage system; determining low-voltage faults based on the effective voltage value of the grid connection point and calculating the voltage drop depth; adaptively updating the virtual inertia and damping coefficient based on the drop depth, and calculating the stator transient flux linkage to generate rotor compensation voltage to suppress overcurrent and electromagnetic torque impact; and performing differential correction based on the updated inertia and damping during the fault recovery phase to suppress active power and frequency oscillations, while simultaneously controlling the energy storage system to output reactive power support and active power support based on voltage and frequency deviations. The energy storage system is a hybrid energy storage system composed of lithium batteries and supercapacitors. This invention adopts a unified virtual synchronous generator control structure, eliminating the need for control mode switching and additional hardware, and effectively suppressing rotor overcurrent and low-frequency oscillations.

The invention belongs to the technical field of metal wire feeding and printing, and relates to a quick-release wire feeding structure suitable for small-diameter metal wires. The wire feeding structure comprises a main body structure frame assembly serving as an installation reference and a force bearing main body of the whole mechanism; the quick-release wire feeding seat assembly is arranged in the main body structure frame assembly, and a through wire feeding channel is formed in the quick-release wire feeding seat assembly; the wire feeding shaft driving assembly is installed in the shaft hole of the main body structure frame assembly and used for driving the metal wire to move along the wire feeding channel; the wire feeding head assembly is installed at the outlet end of the main body structure frame assembly and used for guiding the metal wires; and the quick-release wire feeding seat assembly can be integrally taken out of and loaded into the main body structure frame assembly. The problems that operation and maintenance convenience is poor, and wire feeding stability and reliability are insufficient are solved.

The application relates to the technical field of coating devices, and discloses a fireproof layer coating machine for fireproof glass production and a production process, wherein the fireproof layer coating machine for fireproof glass production comprises an equipment frame, a conveying assembly fixedly installed in the equipment frame, a bottom frame mechanism arranged above the conveying assembly and a coating mechanism, and the inside of the bottom frame mechanism supports a glass sample; a three-stage nested floating structure formed by first, second and third sliding sleeves provides a multi-degree-of-freedom alignment capability for a coating roller; when special-shaped glass passes, the coating roller can passively and adaptively float along the curved surface profile of the special-shaped glass, and always adhere to the surface of the glass; meanwhile, the whole coating head is flexibly hung by a plurality of supporting springs, overall buffering is provided, the problems of accumulation at protruding positions and coating leakage at recessed positions are solved, uniform transfer of fireproof coating on a special-shaped surface is ensured, and finally, a high-quality coating with consistent thickness and continuous integrity is obtained.

The application discloses a kind of cut-off check valve with self pressure relief function, it is related to check valve technical field, including valve body, the valve body one end is provided with water outlet assembly, the water outlet assembly is used for the water flow discharge work inside valve body, the valve body top is equipped with end cover, the end cover is connected with valve body by bolt, the end cover top is equipped with locking assembly, the locking assembly is used for control inside passage switch of valve body, when valve body works, medium enters by water inlet and pushes valve cover to open, valve cover is driven piston block synchronous movement in damping tank by connecting rod;Piston block is throttled by damping oil, damping oil is limited to flow through throttle hole, forms damping resistance, realizes valve cover slow opening and slow closing, inhibits water hammer impact, reduces pipeline vibration and component wear.

This invention provides an adaptive inflation control method and system for reusable liquid rocket cylinders. The adaptive inflation control method for reusable liquid rocket cylinders includes: automatically matching corresponding inflation parameters and safety thresholds based on acquired data from the onboard cylinders; performing a self-check on the ground-based gas supply system and establishing a rocket-ground safety interlock after the self-check passes; and performing segmented inflation control based on the matched inflation parameters and safety thresholds. The segmented control includes: initially inflating the cylinder at a preset constant flow rate or pressure; after the pressure reaches a first preset safety threshold, inflating at a first set flow rate or pressure; after the pressure reaches a second preset safety threshold, gradually reducing the inflation flow rate or pressure to smoothly approach the target pressure; and when the cylinder pressure approaches the target pressure, replenishing the cylinder with a second set flow rate to the target pressure and then closing the inflation valve. This application achieves the goal of improving inflation efficiency and lifespan.

The application relates to the technical field of semiconductor bridge electrostatic discharge protection and current protection, and discloses an electrostatic discharge and current protection circuit of a semiconductor bridge, which comprises an ESD protection circuit, a current protection circuit and an NMOS connected in parallel, the ESD protection circuit comprises a bidirectional transient suppression diode and a capacitor connected in parallel, the bidirectional transient suppression diode clamps a transient high voltage by breakdown conduction, the voltage is limited in a safe range, the capacitor reduces a voltage rising rate and suppresses overshoot by shunting and absorbing a transient current, the NMOS provides a low-resistance discharge path, and the voltage and current impact applied to the semiconductor bridge are reduced; the current protection circuit comprises a bidirectional rectifier circuit and a detection circuit; and the NMOS is connected between the detection circuits. The application can realize ESD protection and current protection of the semiconductor bridge, prevents current from damaging the structure, and guarantees the safety of the semiconductor bridge working in an electromagnetic and ESD environment.

The application discloses a dust removal control method for a new energy truck heat dissipation fan, which comprises the following steps: taking the FCU and the whole vehicle power-on linkage as the starting point, first performing one-time reverse dust removal after the power supply, communication, drive and sensing link self-inspection are qualified; then, based on the segmented threshold and linear mapping of the motor temperature and the controller temperature, the PWM is adjusted in real time, the duty cycle is constrained by the change rate and the positive / negative rotation switching is pre-stopped for buffering; when the temperature is out of limit, full-load heat dissipation is preferred and the power is limited in cooperation with the MCU; at the same time, the RTC accumulates the positive rotation working hours, and the periodic dust removal of smooth speed reduction-stop-reverse-stop-mapping recovery is performed in the non-emergency heat dissipation window. The method solves the problems that the dust in the air duct is difficult to be cleaned online under high dust working conditions, the heat dissipation control is extensive, and the overheating risk is high, and achieves the technical effects of stable air volume and heat exchange efficiency, reduced energy consumption and NVH, and decreased maintenance frequency and failure rate.

The invention relates to the technical field of hybrid power, and discloses a vehicle torque compensation method and device, computer equipment and a storage medium. According to the method provided by the embodiment of the invention, when the vehicle is in the parallel mode and the gear switching is triggered, the connection state of the transmission chain is detected in real time, the connection condition of the power transmission path can be judged, and a prerequisite condition and a reliable basis are provided for subsequent torque compensation; the compensation torque currently needed by the vehicle is obtained, the accuracy and self-adaptability of the compensation amount are ensured, and torque disturbance caused by gear switching is effectively eliminated; and the vehicle is compensated in real time according to the compensation torque, so that engine rotating speed fluctuation and torque impact caused by gear shifting are restrained, high smoothness of the gear shifting process is achieved, and the driving comfort and the overall reliability of the vehicle are improved.

The embodiment of the invention provides a robot control method and device, electronic equipment and a storage medium, and relates to the technical field of robots. The robot control method comprises the steps that in response to collision of a robot, an expected joint angle is selected from joint angles of all joints of the robot at multiple historical moments, based on the current expected joint angle, according to a first determination mode, the impedance torque of the robot is determined, and according to the impedance torque of the robot, the robot is controlled. And calculating the output torque of the robot, controlling the robot to move according to the output torque of the robot, and returning to the step of selecting the expected joint angle from the joint angles of the joints of the robot at the plurality of historical moments. Therefore, according to the scheme, the robot can be effectively protected after collision happens to the robot.

The present application provides a kind of control device of vehicle, it can improve the acceleration response after temporarily deceleration travel.In the period of vehicle deceleration, engine stall needs to be avoided (in step S2 "Yes"), in the case of the response of needing to reaccelerate (in step S3 "Yes"), engagement mechanism is set to release state (step S4), in the period of vehicle deceleration, engine stall needs to be avoided (in step S2 "Yes"), in the case of the response of not needing to reaccelerate (in step S3 "No"), release lock-up clutch (step S5).

This invention provides a transport system that enables the installation and adjustment of a device in a short time with a simple configuration, and can suppress shocks, vibrations, noise, etc., and achieve stable transport of a moving body. Specifically, in the transport system (100) that moves a moving body by means of a rack and pinion, the rack (110) is provided with fixed rack teeth (112) arranged in a predetermined pitch along the transport path. A portion of the fixed rack teeth (112) on the rack (110) is replaced with movable rack teeth (117). The movable rack teeth (117) are configured to move along the transport path so that the pinion teeth (122) on the pinion (121) can engage and disengage from the movable rack teeth (117) in the tooth width and tooth height directions relative to the movable rack teeth (117).

The application provides a knee joint exoskeleton device and a lower limb outdoor walking aid exoskeleton robot. The device comprises: a thigh contraction connecting rod; a knee joint upper connecting rod connected to the rotating end of the thigh contraction connecting rod in a rotatable manner; a knee joint lower connecting rod connected to the other end of the knee joint upper connecting rod in a rotatable manner; and a knee joint elastic adjustment assembly having an uphill and downhill mode and a flat ground mode. The application switches to the flat ground mode when walking on the flat ground. When the leg is bent and straightened, the knee joint elastic adjustment assembly stores the flat ground elastic potential energy. When the leg is straightened and bent, the knee joint elastic adjustment assembly releases the flat ground elastic potential energy to provide power assistance. The knee joint elastic adjustment assembly switches to the uphill and downhill mode when going uphill and downhill. When the leg is straightened and bent, the knee joint elastic adjustment assembly stores the uphill and downhill elastic potential energy. When the leg is bent and straightened, the knee joint elastic adjustment assembly releases the uphill and downhill elastic potential energy to provide power assistance, which can adapt to different outdoor terrains.

The application discloses an off-grid type reverse control integrated energy scheduling method based on cold storage thermal inertia, defines a thermal state of charge SOT through a first-order thermal resistance and thermal capacity model, and quantifies the cold storage thermal inertia as virtual energy storage; based on a SOT and SOC cooperative criterion, redundant power is over-cooled and absorbed as cold storage when photovoltaic power is abundant, and cold is released by using thermal inertia when photovoltaic power is insufficient; the second-order change rate of photovoltaic power is used to predict cloud shadow sudden drop and reduce load in advance; and residual error analysis is used to diagnose refrigeration energy efficiency abnormalities in real time. The application breaks through the limitation of electric-thermal scheduling separation, suppresses battery impact and avoids photovoltaic power abandonment through virtual energy storage scheduling by replacing electricity with heat, and improves the service life of the energy storage system and the comprehensive energy utilization rate.

The invention discloses a multi-channel amusement equipment control method for event-driven priority scheduling, and relates to the technical field of amusement equipment automation control, and the method comprises the following steps: building an excessive signal discrimination band, compressing a burst input signal on a time axis, extracting a transient fingerprint with the strongest persistence, and obtaining an excessive signal discrimination band; taking the transient fingerprint as a basis for dividing subsequent signal segments; impact fragments are divided on a time axis according to the transient fingerprints, a graded slow-release mark is arranged on each impact fragment, and the energy release rate is limited through the graded slow-release marks. According to the invention, through event-driven priority scheduling and time hierarchical energy management, coordinated control of energy release, signal shunting and error signal unloading is realized, a continuous rhythm is formed, and instability caused by sudden increase of driving force is avoided. Through reverse rhythm traction in a short-time stable window, the driving force is subjected to peak clipping in advance and smooth transition, flexible acceleration and smooth deceleration are realized, and the control precision, the operation stability and the user experience are improved.

The application discloses a full-active suspension mode switching smooth transition control method and a cooperative control system, a future time domain acceleration sequence issued by an intelligent driving system is used to predict a target working mode, so that a suspension controller can actively know the switching demand in advance, and lag and impact caused by traditional post-response control are fundamentally reduced; then, according to a switching span between a current mode and the target mode, a smooth transition time window with differentiation and gradually decreasing size is set, and a continuous reference track of pump rotating speed and electromagnetic valve current is generated by using an S-shaped ramp function, so that a long enough slow change time is obtained for large-span switching to fully suppress hydraulic impact and electrical peak, and a short transition time is obtained for small-span switching to ensure response speed, so that fast and smooth mode transition is realized under the premise of avoiding pressure step and current overshoot.

The application provides a double flexible contact phased adaptive three closed loop hybrid control method, system and readable storage medium, comprising: real-time monitoring of the contact state and contact force of the robot end and the workpiece surface; identifying the non-contact, contact transition or stable contact phase according to the relationship between the contact force and the expected force; packaging the three phases into three control experts, inputting the contact force, position error, tangential velocity and curvature information into the gate network to dynamically output the fusion weight, adopting the zoning and time-sharing weight distribution strategy to weight and fuse the position correction amount of each expert to generate the control instruction. The second expert introduces semi-active damping to enhance the force overshoot of double flexible contact inhibition, and the third expert adopts double channel decoupling control to compensate the time-varying stiffness. The system comprises a robot body, a sensor module and a controller. The application realizes full-process smooth switching and high-precision force control under double flexible contact, and is suitable for wind power blade roll coating and other operations.

This invention discloses an automated cutting system based on aluminum alloy production, belonging to the field of aluminum alloy profile processing technology. The system includes a mechanical execution layer, a sensing and detection layer, and an intelligent control layer. Addressing the problems of lag in feed control and lack of mechanical basis for attitude selection in cutting complex cross-section profiles, this invention uses a multi-axis attitude optimization control unit to calculate the relationship between the profile cross-section moment of inertia and cutting force, selecting the optimal attitude with minimal deformation. A collaborative controller drives a cross-section topology analysis unit to generate a cross-section feature sequence based on the optimal attitude. A feed rate adaptive control unit establishes a forward-looking window based on this sequence, predictively adjusting the rate before the saw blade contacts the wall surface or cavity features. This invention eliminates response lag through feedforward control and reduces profile deformation through mechanical optimization, significantly improving the cutting quality and accuracy of aluminum profiles.

This invention provides a pressurizing device and a pressurizing processing apparatus using this pressurizing device, which, when driving a pair of pressurizing elements with contactable / separable structures into contact, can suppress variations in the contact pressure distribution in the contact area between the pair of pressurizing elements even if the pressurizing elements generate a driving reaction force. The pressurizing device includes: a first pressurizing element; a second pressurizing element; a contact / separation member that causes the second pressurizing element to contact / separate relative to the first pressurizing element between a contact position and a retracted position; a force-applying member that applies force to the first pressurizing element toward the second pressurizing element; and a driving member that applies a driving force to the second pressurizing element, causing the first pressurizing element to be driven. The contact / separation member has a moving element that moves the second pressurizing element toward the first pressurizing element, and the driving member applies a driving force in the direction in which the second pressurizing element is pressed toward the moving element.

The present application provides a vehicle control device capable of exhibiting a sporty performance while suppressing the occurrence of an impact in a vehicle. A vehicle control device in which a vehicle is equipped with an engine having a fuel injection valve, the vehicle control device including: a normal start control section that executes normal start control in which a fuel injection amount from the fuel injection valve is controlled to a normal start injection amount to start the engine; and a high-impact start control section that executes high-impact start control in which the fuel injection amount is controlled to a high-impact start injection amount that is greater than the normal start injection amount in such a manner that an impact speed at the time of starting the engine is increased compared to the normal start control, and the fuel injection amount is gradually changed from the high-impact start injection amount to a required injection amount corresponding to a required driving force of the engine after starting the engine.

The application relates to the technical field of micro fans, in particular to a multi-jet-hole guide fan, which comprises a fan body and a guide device arranged on one side or both sides of the fan body through a gap, at least two jet-hole units are arranged on the side of the fan body close to the guide device, and each jet-hole unit comprises at least two jet holes arranged at intervals, in the application, the design of a single first guide channel with multiple jet holes can help to expand the suction range when the airflow sprayed by the multiple jet holes enters the corresponding first guide channel after passing through the guide cavity, meanwhile, the one-to-many mode can reduce the local pressure peak value, inhibit the formation of turbulent flow and the impact on the wall surface of the first guide channel, and is beneficial to improving the flow and reducing the noise; on the other hand, the setting of the convex part can force the circumferential gas to smoothly turn along the surface of the convex part, reduce the airflow separation area, and reduce the instability of the shear layer.

The application discloses a server cluster intelligent dynamic heat dissipation regulation method and system, relates to the technical field of data center heat dissipation control, and discloses the server cluster intelligent dynamic heat dissipation regulation method and system, which obtains server cluster operation state and power supply system state data, calculates heat buffer capacity and impedance characteristics, generates optimized power adjustment instructions and offsets heat dissipation equipment adjustment time points, realizes heat dissipation regulation while reducing power mutation, can effectively inhibit the impact of power mutation on the power supply system, improves data center power stability, and reduces resonance risk.

This application discloses a power supply circuit and system, and a mobile device, belonging to the field of electronic technology. The circuit includes a pre-charging unit and multiple power distribution branches. The positive input terminal of each power distribution branch is connected to the input terminal of the pre-charging unit, and the positive output terminal of each power distribution branch is connected to the respective output terminal of the pre-charging unit. The input terminal of the pre-charging unit is also used to connect to the positive power supply terminal of a power source, and the positive output terminals of each power distribution branch are used to connect to loads. The pre-charging unit outputs pre-charge energy to the target load when pre-charging is required for the target load corresponding to the target power distribution branch. The target power distribution branch remains off when the voltage corresponding to the target load is less than a preset threshold, and turns on when the voltage of the target load is greater than or equal to the preset threshold, to supply power to the target load. This application can effectively suppress surge currents or inrush currents that may occur when capacitive loads are powered on, thereby improving the safety and reliability of power supply.

The utility model discloses integrated formula big horsepower limit torsional damper, including damper body, install the contact friction piece on the damper body, install the rivet friction piece on the contact friction piece side, install the first transmission disc on the rivet friction piece side end, install the second transmission disc on the first transmission disc outside, install the first damping disc on the second transmission disc outside, install the second damping disc on the first damping disc outside, install a plurality of groups of outer damping spring on the second damping disc inboard, install a plurality of groups of inner damping spring on the outer damping spring inboard, install the friction washer on the inner damping spring radial inboard, install the outer disc hub on the friction washer outside, install the inner disc hub on the outer disc hub side end, the utility model has the advantages of improving the flywheel surface flatness, makes the limit torsional spring work space stable controllable, guarantees the accuracy of limit torsional value measurement, reduces the material and processing cost simultaneously, can effectively adapt to the use demand of big horsepower heavy truck type's advantage, significantly improves the use efficiency to damper.

The utility model relates to a process calibration instrument storage box relates to process calibration instrument shockproof transportation technical field, the utility model discloses in order to solve the current process calibration instrument in the carrying transportation process because of the lack of effective shockproof and the structure protection leads to the easy damage problem, including box, storage box, slide rail, plug-in tongue type locking mechanism, shock absorbing fixed establishment, a plurality of storage boxes are slidably connected through slide rail in the box, plug-in tongue type locking mechanism is arranged in the storage box, plug-in tongue type locking mechanism can fix the storage box in the box, shock absorbing fixed establishment is arranged in the storage box, and shock absorbing fixed establishment is used for fixing process calibration instrument, plug-in tongue type locking mechanism includes lock box, pivot, rocker, connecting rod and plug-in tongue, lock box is fixed in the storage box, pivot is rotatably connected in the lock box, and the upper and lower ends of rocker are hinged with a connecting rod respectively, the utility model discloses be used for process calibration instrument shockproof transportation.