48results about How to "Eliminate shock" patented technology

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.

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.

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.

The invention discloses a crown block lifting hook control device and method, and aims to solve the technical problem of low control accuracy of a crown block lifting hook in the prior art. The crown block lifting hook control device comprises a power module, a motor module, a frequency converter module and a control module, the motor module and the control module are connected with the power module, the frequency converter module is connected to a lifting hook lifting motor in the motor module, and lifting control over a crown block lifting hook is achieved through a frequency converter. A more accurate lifting hook stroke control effect is obtained, and the defects of a traditional alternating current contactor control mode are remarkably overcome. According to the crown block lifting hook control method, accurate control over the lifting hook is achieved through the crown block control device. And a motor in the motor module is controlled through a control signal sent by the remote controller, so that the movement of the crown block lifting hook is controlled.

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.

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.

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.

The invention relates to the field of tempered glass cutting, and discloses a tempered film cutting device and a cutting method.The tempered glass cutting device comprises a water storage tank, a containing frame is arranged in the water storage tank in a sliding mode, fixing frames are fixed to the two sides of the water storage tank respectively, a first motor is fixed to one side of each fixing frame, and a second motor is fixed to the other side of each fixing frame; a longitudinal screw rod is rotatably arranged in the fixing frame, a movable folding plate is slidably arranged above the water storage tank, a lifting plate is slidably arranged below a sliding plate, two air cylinders are fixed to the top face of the sliding plate, a fixing hole is formed in the top face of the lifting plate, a nozzle is fixed in the fixing hole, and a water outlet is formed in the top face of the water storage tank. And a high-pressure pipe is fixed at the top end of the nozzle. According to the tempered glass cutting device, in the tempered glass cutting process, tempered glass is immersed in water in the water storage tank, so that the temperature of the tempered glass and the probability that fragments burst everywhere during cutting can be reduced, and the safety during tempered glass cutting is improved.

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.

This utility model discloses an improved proximity switch, which includes a housing. A front cover is movably plugged into one end of the housing, and a rear cover is movably plugged into the other end. An insulating cylinder is fitted inside the rear cover, and a support base and a pre-fixed insulating sleeve are sequentially fitted inside the rear cover. A circuit board passes through the inner hole of the pre-fixed insulating sleeve, and its output terminal is electrically connected to an electrical interface fixed on the support base. This utility model achieves contactless, automated, and precise calibration of the resistance value by independently laser-adjusting the core module, consisting of the insulating cylinder, pre-fixed insulating sleeve, and circuit board, in an open environment before final packaging. This not only completely eliminates the thermal shock and human error caused by manual soldering and adjustment, but also ensures high precision and ultra-high consistency in the detection distance of each product.

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.

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.

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.

The invention provides a method for treating coking wastewater hardness removal resin regeneration waste liquid by using an old membrane, and belongs to the technical field of coking wastewater zero discharge treatment, and the method comprises the following steps: step 1), carrying out high-flow washing on an old reverse osmosis membrane, and then introducing a test solution to test the salinity of the old reverse osmosis membrane, marking the old reverse osmosis membrane with low salinity as a low-salinity membrane according to the salinity, introducing a sodium hypochlorite solution into the old reverse osmosis membrane with high salinity to carry out circular oxidation until the desalination rate reaches a preset value, and marking the old reverse osmosis membrane after oxidation treatment as a high-salinity membrane for later use; (2) adding sodium hydroxide and sodium carbonate into the hardness-removed resin regeneration waste liquid, stirring, dehydrating chemical sludge generated by reaction, introducing supernate after reaction into the high-salt-permeability membrane obtained in the step (1), refluxing concentrated water of the high-salt-permeability membrane, and continuously adding sodium hydroxide and sodium carbonate; and (3) introducing the high-salt-permeability membrane produced water obtained in the step (2) into the low-salt-permeability membrane obtained in the step (1), conveying the low-salt-permeability concentrated water out of the system, carrying out ultrahigh-pressure concentration or extracting sodium chloride by an evaporative crystallization system, applying the low-salt-permeability membrane produced water to high-flow flushing and test liquid preparation in the step (1), and delivering redundant low-salt-permeability membrane produced water as product water. According to the invention, the impact problem after the hardness removal resin regeneration waste liquid flows back to the water treatment system can be eliminated, and meanwhile, a new resource utilization mode of the old reverse osmosis membrane is expanded.

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.

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.

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.

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.

The utility model discloses a transformer oil on-line monitoring device convenient for detection alarm processing, which relates to the transformer field, and comprises a hydraulic press oil tank and a threaded rod in clamping connection with the top end of the hydraulic press oil tank, one end in the hydraulic press oil tank is fixedly connected with a temperature sensor, and the top end of an oil tank cover is in threaded connection with the threaded rod. The outer side of the extension rod is sleeved with a liquid level monitoring mechanism used for conducting reminding and alarming on the oil liquid level of the hydraulic press. According to the transformer oil on-line monitoring device convenient for detection and alarm processing, the threaded rod can drive the extension rod to change the height in the hydraulic press oil tank, so that liquid level reminding at different heights can be set in the hydraulic press oil tank, and hydraulic press oil can be supplemented or replaced more timely; when the oil level continuously drops to the liquid level height needing to be reminded, the two connecting pieces make contact with each other, and the device can achieve reminding and alarming of the liquid level height in time.

The invention belongs to the technical field of machining centers, and particularly relates to a gantry machining center which comprises a base, beam type mounting seats are mounted on the two sides of the base, door-shaped stand columns are fixedly mounted on the tops of the beam type mounting seats, and a transverse transmission mechanism is mounted on the tops of the door-shaped stand columns; a four-rail supporting plate mechanism is arranged on the side face of the transverse transmission mechanism, and a mounting groove of a U-shaped structure is formed in the front end of the four-rail supporting plate mechanism. The line rail machine head is installed on the main line rail and the auxiliary line rail through the main sliding block set and the auxiliary sliding block set respectively, a holding structure is formed on the outer side of the line rail machine head, then lateral acting force is dispersed through the supporting faces of the main line rail and the auxiliary line rail, lateral pulling force of vibration generated by the machining center during work on the main line rail and the auxiliary line rail is effectively dispersed, and machining precision is improved. Lateral abrasion between the linear rail and the sliding block is reduced, the risk of deformation of the linear rail is reduced, and then the influence on the precision of a machining center is avoided.

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.

The utility model discloses a service life prolonging structure of a gear box torsion switch poking device, which comprises a motor body, a reduction gear box and a connecting sleeve used for connecting the output end of the reduction gear box and a torsion switch, and the reduction gear box comprises a box body, machine core teeth, a duplicate gear set and an output gear. The machine core teeth are connected with an output shaft of the motor body and transmit power to the output gear through the duplicate gear set, the output gear is a metal structural part, a notch is formed in the end face of the outer side of the output gear, and a protrusion in clearance fit with the notch is arranged at one end of the connecting sleeve. And a switch groove connected with the torsion switch is arranged at the other end of the handle. According to the utility model, the last stage of output gear is machined and manufactured by a metal machine and is used for improving the strength of the gear, and the output end of the gear box and the connecting end of the switch are in transition connection by adopting special parts, so that the overall service life of the gear box is prolonged, and the safety and the reliability of the gear box are greatly improved.

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.

The present invention discloses a fast disassembly double disc silage harvesting platform, the device comprises a suspension mechanism, two disc-type harvesting mechanisms are arranged side by side on the suspension mechanism, a locking connection mechanism capable of being mutually fixed with a hooking machine is arranged at the rear side of the suspension mechanism, a straw-separating mechanism is arranged at the front end of the two disc-type harvesting mechanisms, the straw-separating mechanism is fixed on the suspension mechanism, an angle-adjustable straw-supporting mechanism is arranged at the upper part of the two disc-type harvesting mechanisms, the angle-adjustable straw-supporting mechanism is installed on the suspension mechanism, and a crop conveying mechanism is arranged between the two disc-type harvesting mechanisms. The present invention can solve the problem that the current silage harvester has a complex harvesting platform structure, an unreasonable design, a poor harvesting effect, and cumbersome disassembly and assembly, which results in the silage harvester being unable to meet the needs of green fodder combined harvesting operations in small plots such as mountainous and hilly areas and paddy fields.

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.

This invention belongs to the field of metallurgical coking technology and discloses an environmentally friendly and safe start-up method for a coal moisture conditioning system. This method addresses problems such as unstable moisture control, dust emission, equipment thermal stress damage, and explosion-proof safety risks during the start-up process of a coal moisture conditioning system. It achieves safe and stable startup through an innovative sequential operation process of multi-system collaborative control. Core technologies include: a stepped frequency conversion start-up program for the dryer starting at 5Hz and increasing by 5Hz every 10 seconds; a differentiated coal feed control strategy and steam temperature rise curve configured according to the shutdown time; maintaining a stable micro-negative pressure in the system through air-coal linkage control; using flue gas replacement control to keep the oxygen content below the safety threshold; and pre-setting fully automatic operating parameters for the condensate system. This invention effectively solves the technical difficulties in traditional start-up processes, achieving a stable startup with no dust emission, low equipment impact, and compliance with explosion-proof specifications, resulting in significant safety, environmental, and economic benefits.

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.

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.

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.

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.