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43results about How to "With redundant function" patented technology
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Safety brake and redundancy control system of mine hoist
ActiveCN102701103AControl speedPollution abilityElevatorsHoisting equipmentsBrake torqueControl signal
The invention relates to a safety brake and redundancy control system of a mine hoist. Detection signals of a roller rotation speed sensor and a motor rotation speed sensor are input into a speed redundancy detector, the processed detection signals are input into a speed signal comparer, compared with a command signal, and then input into a speed closed-loop controller, the speed closed-loop controller transmits the signals to a pressure signal comparer and a pressure feed-forward controller, the pressure signal comparer compares a signal of a pressure sensor and an output signal of the speed closed-loop controller, a comparison result is input into the pressure speed closed-loop controller, and a signal of the speed closed-loop controller is input into an adder through a switch to form a control signal of a tee proportional depressurization valve; and when the pressure sensor is cut off, the output signal of the speed closed-loop controller is input into the adder after being processed by the pressure feed-forward controller, and an output signal of the adder controls the tee proportional depressurization valve, so that the braking torque is controlled. The safety brake and redundancy control system is high in control precision and response speed, and the mine hoist can brake at constant retarded velocity.
Owner:TAIYUAN UNIV OF TECH
Active and passive compound control system for hybrid power hydraulic excavator
ActiveCN104294877AEliminate throttling lossesImprove efficiencySoil-shifting machines/dredgersHydraulic pumpExcavator
The invention discloses an active and passive compound control system for a hybrid power hydraulic excavator. According to the active and passive compound control system for the hybrid power hydraulic excavator, a control circuit comprises a hydraulic pump A, a hydraulic pump B, a hydraulic pump C, a movable arm cylinder control valve bank, a bucket rod cylinder control valve bank, a bucket control valve, a rotation control valve, a rotating motor control valve bank, a two-position and two-way valve I, a two-position and two-way valve II, a two-position and two-way valve III, a two-position and two-way valve IV, a two-position and two-way valve V, a two-position and two-way valve VI, a two-position and two-way valve VII, a two-position and three-way valve I, a two-position and three-way valve II, an energy accumulator I and an energy accumulator II, an open type control circuit is adopted to serve as the control circuit, the two cavities of a hydraulic cylinder are each controlled through a power source, and the pressure and the flow of each cavity are regulated independently. The active and passive compound control system for the hybrid power hydraulic excavator has the multiple technical advantages that the energy efficiency is high, the degree of integration is high, power consumption is low, power supply redundancy is avoided, a pilot oil source is not needed, the noise is low, and kinetic energy recovery and potential energy recovery are integrated.
Owner:TAIYUAN UNIV OF TECH
Steering redundancy and integrated control system and method of four-wheel independent driving electric automobile
InactiveCN108163044AMeet individual needsImprove maneuverabilitySteering linkagesAutomatic steering controlElectric power steeringDriver/operator
The invention relates to a steering redundancy and integrated control system and method of a four-wheel independent driving electric automobile. The control method comprises the steps that a differential action power reference curve is determined by an automobile controller according to the steering wheel hand power demands of a driver; an electric power steering module obtains a power torque command according to the measured steering wheel rotating angle data and sends the power torque command to an EPS (Electronic Power Steering, electronic power steering system); a differential action powersteering module utilizes the differential action power reference curve to obtain a front axle differential action torque of the electric automobile according to the measured data; a reference yaw angle velocity is obtained according to the measured automobile practical yaw angle velocity, the steering wheel rotating angle and the automobile speed data, and accordingly the additive yawing moment is obtained; and the automobile controller utilizes the front axle differential action torque and the additive yawing moment to obtain a four-wheel driving motor target output torque. Compared with theprior art, the steering redundancy and integrated control system and method have the advantages that the individualized demands of the driver can be met, the driving safety of the automobile is improved, and the manipulation burden of the driver is relieved.
Owner:TONGJI UNIV
Lifting device gravitational potential energy pressure-volume storage system
ActiveCN107420384AReduce conversion linksImprove energy efficiencyLifting devicesServometer circuitsCapacitanceEnergy recovery
The invention discloses a lifting device gravitational potential energy pressure-volume storage system. According to the system, an electro-hydraulic compound energy recovery system is additionally arranged based on a lifting mechanism hydraulic cylinder inlet and outlet oil port system and is further composed of a hydraulic motor / pump, a motor / electric generator, a super-capacitor module and an energy accumulator. An inlet / outlet oil port of the hydraulic motor / pump communicates with a lifting hydraulic cylinder through a control valve, and the other oil port of the hydraulic motor / motor communicates with the energy accumulator. An output shaft of the hydraulic motor / pump is connected with an output shaft of the motor / electric generator. The super-capacitor module is connected to a rotary speed controller DC bus of the motor / electric generator. According to the lifting device gravitational potential energy pressure-volume storage system, the gravitational potential energy in the dropping process of the lifting mechanism is stored into the energy accumulator and a super-capacitor without throttling losses through the hydraulic motor / pump and the motor / electric generator, the part of energy stored can be recycled without throttling losses, machine working efficiency is improved, operating cost is reduced and emission pollution of an engine is reduced.
Owner:TAIYUAN UNIV OF TECH
Brake pressure modulator of an electronic braking system of a utility vehicle
ActiveCN106458196ACost advantageCompact structureBraking action transmissionBrake control systemsControl theoryPressure controlled ventilation
The invention relates to a brake pressure modulator (1) of an electronic braking system of a utility vehicle, which is designed as a constructional unit with at least two pressure control circuits (13, 14). The wheels (6a, 6b, 6c, 6d) of the vehicle, which can be braked, comprise pneumatically actuated wheel brakes (7a, 7b, 7c, 7d). The pressure control circuits (13, 14) are respectively associated with a braking circuit of a vehicle axle, each pressure control circuit (13, 14) comprises a compressed air supply system (4, 5), at least one redundancy control pressure path (21), at least one ventilation path (19, 19a) and a common electronic control unit (2) being provided for the pressure control circuits (13, 14). Said pressure control circuits (13, 14) can be controlled independently from each other by means of the electronic control unit (2). According to the invention, in order to be able to produce the multi-circuit brake pressure modulator (1) in a constructionally simple manner which is also compact and economical, each pressure control circuit (13, 14) has an independent ventilation path (19, 19a) and at least one of the pressure control circuits (13, 14) has an independent redundancy control pressure path (21) and at least one other of the pressure control circuits (13, 14) comprises a device (16a) for forced venting in the event of a failure by means of the associated ventilation path (19a).
Owner:ZF CV SYST EURO BV
Electric power-assisted braking system used for automobile
ActiveCN106938646ASimple structureCompact structureBraking action transmissionElectric power systemOperation mode
The invention relates to the technical field of automobile braking and particularly discloses an electric power-assisted braking system used for an automobile. The electric power-assisted braking system comprises a braking force output hydraulic module, a braking force input mechanical module, an electric power-assisted input module and a control assembly. The electric power-assisted input module comprises a motor, a transmission module and a sensor. The braking force input mechanical module directly acts on the braking force output hydraulic module through a coupler. The motor is connected with the coupler through the transmission module. The control assembly is used for setting a control strategy and is in electrical signal connection with the motor and the sensor. According to the electric power-assisted braking system used for the automobile, the modular design is adopted, the braking response time is shortened, the braking reliability and the braking efficiency are improved, and the occupied space is reduced; the braking system is provided with a protection unit with redundant measures and has a driver pedal force braking way and a motor braking way, and a traditional operation mode by a driver is retained; and the control mode can be adjusted, man-machine interaction can be conducted, a plurality of driving styles are provided, and the electric power-assisted braking system can meet the braking requirements of automatic driving and can further be matched with a regenerative braking system to achieve braking together.
Owner:SUN YAT SEN UNIV +1
Method for controlling parallel power generation system
ActiveCN105048503AGood current equalization effectWith redundant functionSingle network parallel feeding arrangementsInner loopClosed loop
The invention discloses a method for controlling a parallel power generation system. The controlling method comprises the steps that: an amplitude limiting unit is added to a control channel on the double closed-loop foundation of a traditional voltage outer loop and a current inner loop; output values of a voltage regulator are processed via the amplitude limiting unit into output current set values; amplitude limiting values of a slave-module amplitude limiting unit are dynamically adjusted; when a main module normally operates, the amplitude limiting values of the slave-module amplitude limiting unit are equal to the output values of the main module amplitude limiting unit; the output current set values of the main module and the slave module remain the same to realize the synchronous operation of the main module and the slave module and to reach the current-sharing control. When the main module is broken down, a module having the lowest output current reference value is confirmed into the main module to realize the main-slave switch.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Single-probe three-coil maglev train gap sensor with fault location function
InactiveCN105352424ASmall probe sizeEasy to installUsing electrical meansElectrical measurementsEngineeringHigh frequency
A single-probe three-coil maglev train gap sensor with a fault location function comprises controllable high-frequency switches which are each connected with a high-frequency signal source on a train body, probe coils which are each connected with one controllable high-frequency switch, signal detection circuits which are each connected with one probe coil, and a self-diagnosis unit connected with the signal detection circuits. The input ends of the three detection coils inside sensor probes are respectively connected with the three high-frequency signal sources through the three controllable high-frequency switches; the output ends of the three detection coils are respectively connected with the signal detection circuits which are independent of one another; the controllable high-frequency switches and the signal detection circuits are connected with a timing controller (T); and the three signal detection circuits output three independent air gap detection values. When there is a single-channel detection fault, the fault diagnosis unit outputs fault location information and indicates the position of a detection channel where the fault occurs. When a single channel fails, an effective real air gap value can still be provided. The single-probe three-coil maglev train gap sensor has a redundancy function.
Owner:SOUTHWEST JIAOTONG UNIV
Multi-power-source series-connection type hybrid power unmanned aerial vehicle and control method thereof
The invention discloses a multi-power-source series-connection type hybrid power unmanned aerial vehicle and a control method thereof. The unmanned aerial vehicle comprises a vehicle body, a left wing, a right wing, a left aileron, a right aileron, a left flap, a right flap, an empennage, a left wing motor, a left wing propeller, a right wing motor, a right wing propeller, a standby propeller module, a horizontal stabilizer, a vertical stabilizer, an elevator, a rudder, an engine, a clutch, an inverter, a power generation / electric all-in-one machine, a storage battery pack, a super-capacitor,an oil tank, a temperature sensor, a pressure sensor, a state-of-charge estimation module and a control module. Enough cruising ability and high maneuverability of the unmanned aerial vehicle can be guaranteed; and meanwhile, the standby propeller module is arranged on the empennage, so when a driving mechanism of the unmanned aerial vehicle breaks down, an engine drives the standby propeller to drive the unmanned aerial vehicle, the situation that the system has a certain redundancy function is guaranteed, and the survival capacity of the unmanned aerial vehicle is greatly improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Linear motor driving type plunger pump provided with multiple motion units
ActiveCN106286197AReduce shockReduce noisePositive displacement pump componentsPump controlWater dischargeFresh water organism
The invention discloses a linear motor driving type plunger pump provided with multiple motion units. When a servo controller drives a linear motor to reciprocate in a special motion plan, plungers at one end are in water absorption working conditions, a suction valve in a corresponding integrated flow distribution valve is opened, and fluid is sucked into working medium from a total water suction pipe of a system through a flow guiding channel inside a cylinder body; and plungers at the other end are in a water discharging working condition, a delivery valve in the corresponding integrated flow distribution valve is opened, and the fluid is discharged from the working medium from a total water outlet pipe of the system through the flow guiding channel inside the cylinder body. When multiple linear motor motion units are in coordinated operation, the linear motor motion units respectively operate by being staggered for 90 degrees in phase difference according to a triangular wave motion curve, so that formed combined flow of the system can reach a stable value. The linear motor driving type plunger pump system is applicable to a hydraulic system with seawater, freshwater, mineral oil and the like as a working medium and has a broad application prospect in the fields of naval vessels, deep sea exploration and the like.
Owner:BEIJING UNIV OF TECH
EHA driving plunger pump and control method thereof
InactiveCN109899267AEasy to installPrecise positioningPositive displacement pump componentsPump controlHydraulic cylinderBall bearing
The invention discloses an EHA drive plunger pump and a control method thereof. The EHA driving plunger pump is composed of cylinder bodies, integrated flow distribution valves, a water outlet main pipe, oil distribution boxes, oil circuit blocks, servo motors, a base, a water inlet main pipe, cylinder barrels, pump set plungers, hydraulic cylinders, a supporting plate, hydraulic cylinder plungerrods, rod end ball bearings and the like. The EHA driving plunger pump adopts EHA as a driving device, the movement of the hydraulic cylinders are controlled through the bidirectional hydraulic pumpsso as to drive the pump set plungers to move, and the function of water suction and drainage is realized; through servo control, the positive rotation, reverse rotation and speed regulation operationof the motor can be controlled. When the pump set plungers reciprocate in a specific motion planning mode, one ends of plungers are in a water absorption working condition, the suction valve in the corresponding integrated flow distribution valves are opened, and the fluid is sucked into the working medium from the system main water suction pipe through flow guide channels in the cylinder bodies.According to the EHA drive plunger pump and the control method, the complex working condition of the ship pump can be met, and the application prospect of the EHA driving plunger pump system in the fields of naval vessels, deep sea exploration and the like is greatly improved.
Owner:BEIJING UNIV OF TECH
High-accuracy multipath data synchronous acquisition device
InactiveCN104408001AImprove synchronicityEasy to integrateElectric digital data processingElectricityData synchronization
The invention provides a high-accuracy multipath data synchronous acquisition device and relates to a high-accuracy multipath data synchronous acquisition technology. In the high-accuracy multipath data synchronous acquisition device, the GPS pulse-per-second signal output end of the a GNSS device is connected with the GPS pulse-per-second signal input end of a high-accuracy multipath time service module, the high-accuracy multipath time service module comprises multiple level pulse-per-second signal output ends, one level pulse-per-second signal output end is connected with a standard device, and other level pulse-per-second signal output ends are connected with tested devices. The high-accuracy multipath time service module further simultaneously sends a TTL level pulse-per-second signal to an industrial control mainframe through a high-speed optical fiber serial bus. The standard device and the test signal output ends of the tested devices are respectively connected to one test signal input end of an interface module. The synchronous performance of the high-accuracy multipath data synchronous acquisition device can be remarkably improved, hardware integration can be further improved, the size is greatly decreased, the information transmission rate and reliability are improved, a memory device has a shake-proof function, and the high-accuracy multipath data synchronous acquisition device is suitable for testing of a ship system.
Owner:HARBIN ENG UNIV
Real-time switching method and device for VPNs (Virtual Private Networks) and GPRS (General Packet Radio Service) networks
InactiveCN102651895AAchieve zero switchingDoes not affect normal communicationWireless communicationData connectionGeneral Packet Radio Service
The invention relates to a real-time switching method and a device for VPNs (Virtual Private Networks) and GPRS (General Packet Radio Service) networks. The method comprises the following steps of: 1) acquiring communication state information of the VPN of all RTUs (Remote Terminal Units) in real time by a PLC (Programmable Logic Controller) master station; 2) judging whether the communication of the VPNs of all the RTUs is normal, if so, executing a step 3), and if not, executing a step 4); 3) maintaining a connecting channel of a data registering area and a main data area of the VPNs, adopting uploaded data of the VPNs as operation and display data and returning the step 1); and 4) if the communication of the VPN of certain RTU is abnormal, enabling data connection of the RTU on the main data area of the PLC master station to point at the data registering area of the GPRS immediately, and returning to the step 1). The device comprises the PLC master station, a first GPRS antenna, a core switch, the GPRS network, the VPN and the RTU. Compared with the prior art, the invention has the advantages of high efficiency, stability, reliability and the like.
Owner:SHANGHAI YUANDONG SCI & TECH
High-precision multi-channel data synchronous acquisition device
InactiveCN104408001BImprove synchronicityEasy to integrateElectric digital data processingData synchronizationElectricity
The invention provides a high-accuracy multipath data synchronous acquisition device and relates to a high-accuracy multipath data synchronous acquisition technology. In the high-accuracy multipath data synchronous acquisition device, the GPS pulse-per-second signal output end of the a GNSS device is connected with the GPS pulse-per-second signal input end of a high-accuracy multipath time service module, the high-accuracy multipath time service module comprises multiple level pulse-per-second signal output ends, one level pulse-per-second signal output end is connected with a standard device, and other level pulse-per-second signal output ends are connected with tested devices. The high-accuracy multipath time service module further simultaneously sends a TTL level pulse-per-second signal to an industrial control mainframe through a high-speed optical fiber serial bus. The standard device and the test signal output ends of the tested devices are respectively connected to one test signal input end of an interface module. The synchronous performance of the high-accuracy multipath data synchronous acquisition device can be remarkably improved, hardware integration can be further improved, the size is greatly decreased, the information transmission rate and reliability are improved, a memory device has a shake-proof function, and the high-accuracy multipath data synchronous acquisition device is suitable for testing of a ship system.
Owner:HARBIN ENG UNIV
Infrared hot spot detection device
InactiveCN107917761AExpand the scope of monitoringThe data is accurate and reliablePyrometry for hot spots detectionLine tubingData acquisition
The invention relates to an infrared hot spot detection device, and belongs to the infrared monitoring equipment field; the infrared hot spot detection device comprises an infrared temperature-test sensor control cabinet and a sensor fixing mechanism; the infrared temperature-test sensor control cabinet comprises a data gatherer, a cooling airflow switch, a filter pressure-reducing valve and an oil stain separator; the sensor fixing mechanism comprises an electric performer, a mounting plate, a pipeline, a protection cover, an infrared probe assembly and an optical lens; the infrared probe assembly comprises at least one infrared temperature-test sensor; the data line of the infrared temperature-test sensor is connected on a terminal of the infrared temperature-test sensor control cabinet;the first air route is connected with the cooling airflow switch through a pipe; the electric performance is connected with the second air route and the protection cover; the second air route is connected with the first air route through the infrared probe assembly; a water inlet pipe winds the infrared probe assembly and is connected with a water outlet pipe; the optical lens is arranged betweenthe infrared probe assembly and the protection cover; the multi-branch infrared redundancy mode is employed, thus more reasonably and accurately gathering data; the water cooling and blowing can effectively solve the dusting and high temperature problems.
Owner:航天科工哈尔滨风华有限公司
Testbed suitable for reliability test of lubricating oil pump of gas turbine and test method
ActiveCN113266561AWith redundant functionUnattendedPump testingPositive-displacement liquid enginesData acquisitionTestbed
The invention relates to a testbed suitable for a reliability test of a lubricating oil pump of a gas turbine and a test method. The testbed comprises a bottom frame and a driving test system, wherein the driving test system is connected to a hydraulic pipeline system and a measurement and control system; the driving test system comprises a variable frequency motor and the lubricating oil pump; the hydraulic pipeline system comprises a tank lubricator, an oil suction pipe group and an oil return pipeline; the measurement and control system comprises a measurement and control cabinet and a data acquisition master station; the measurement and control cabinet is connected to the data acquisition master station; a weak current bridge is connected between the measurement and control cabinet and the hydraulic pipeline system; the measurement and control cabinet is connected to a frequency conversion cabinet and a distribution box through a strong current bridge; the strong current bridge is connected between the frequency conversion cabinet and the variable frequency motor; and the tank lubricator is connected to the strong current bridge between the measurement and control cabinet and the frequency conversion cabinet through another strong current bridge. According to outlet lubricating oil pressure requirements corresponding to various working conditions, the opening degree of an electric valve is automatically adjusted, meanwhile, the measurement and control cabinet and the data acquisition master station store test data at the same time, and the recording automation degree is high.
Owner:中国船舶重工集团公司第七〇三研究所无锡分部
Lifting device gravity potential energy pressure volume storage system
ActiveCN107420384BReduce conversion linksImprove energy efficiencyLifting devicesSoil-shifting machines/dredgersCapacitanceEnergy recovery
Owner:TAIYUAN UNIV OF TECH
Electric vehicle charging circuit and electric vehicle
ActiveCN111969684AWith redundant functionLow costCharging stationsPower network operation systems integrationBattery chargeElectrical battery
The invention provides an electric vehicle charging circuit and an electric vehicle. According to the electric vehicle charging circuit, the second secondary side circuit of a standby transformer andthe second secondary side winding of a transformer are added, so that the normal power supply of a low-voltage battery can be realized after a first DC / DC converter for charging the low-voltage battery unit fails , so that the battery charging circuit has a redundancy function, and is low in cost and small in size.
Owner:HANGZHOU EV TECH CO LTD
Cascade module unit applied to power electronic transformer
InactiveCN112583235AImprove cooling efficiencyRealize hot plug functionDc-dc conversionCooling/ventilation/heating modificationsHeat managementTransformer
The invention provides a cascade module unit applied to a power electronic transformer. The cascade module unit comprises a power module, a power unit board, a thermal management component, a currentdetection component, a redundant loop component, a loop connection component and a module shell, adopts a cascade H-bridge CHB topology, and adopts a star connection method to perform multi-module series connection. The cascade module unit solves the problem of insufficient withstand voltage of a single power electronic device IGBT. The cascade module unit has the advantages that the modular degree of the internal components is high, and the assembly is convenient; the whole module is convenient to assemble, electrical connection can be rapidly achieved, and a hot plug function is achieved; the air volume of a fan is utilized to the maximum extent, and the overall module cooling efficiency is high; a redundancy function is achieved, and the reliability of the system is high; the volume weight is small, and the power density is high; and the overall demetallization degree of the module is higher, the creepage distance and the electrical gap are ensured, and the safety of the module unitis high.
Owner:QINGDAO TOPSCOMM COMM
A nested ball screw pair
ActiveCN107606089BWith redundant functionSatisfy the full travel work requirementsGearingBall screwEngineering
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
A single-probe three-coil maglev train gap sensor with fault location function
InactiveCN105352424BSmall probe sizeEasy to installUsing electrical meansElectrical measurementsEngineeringSignal source
A single-probe three-coil maglev train gap sensor with a fault location function, including a controllable high-frequency switch connected to a high-frequency signal source on the car body, a probe coil connected to the controllable high-frequency switch, and a signal signal connected to the probe coil A detection circuit, a self-diagnosis unit connected with the signal detection circuit. The input terminals of the three detection coils in the sensor and the probe are respectively connected with three high-frequency signal sources through three controllable high-frequency switches; the output terminals of the three detection coils are respectively connected with mutually independent signal detection circuits; The frequency switch and the signal detection circuit are also connected with the timing controller (T); the three signal detection circuits output three independent air gap detection values. When a single-channel detection fault occurs, the fault diagnosis unit outputs fault location information, indicating the location of the faulty detection channel. It can still provide effective real gap value when a single path failure occurs, and has a redundant function.
Owner:SOUTHWEST JIAOTONG UNIV
Safety brake and redundancy control system of mine hoist
ActiveCN102701103BPollution abilityEnsure controlElevatorsHoisting equipmentsBrake torqueControl signal
Owner:TAIYUAN UNIV OF TECH
Electric vehicle charging circuit and electric vehicle
ActiveCN111969684BWith redundant functionLow costCharging stationsPower network operation systems integrationBattery chargeLow voltage
Owner:HANGZHOU EV TECH CO LTD
Anti-folding control system for semi-trailer
ActiveCN113911087ARaise priorityWith redundant functionBraking action transmissionBrake safety systemsLoop controlSemi-trailer
The invention provides an anti-folding control system for a semi-trailer; vehicle parameters are measured through a sensor, and the vehicle speed, the road adhesion coefficient and the ideal yaw velocity are estimated; an intervention threshold value is set, an anti-folding control program sets three folding angle threshold values and a folding angle speed threshold value to serve as the distinguishing basis of the active braking strategy, the size relation among the three folding angle threshold values is sequentially decreased, and the first folding angle threshold value is the maximum value in the three threshold values; the anti-folding control system architecture adopts electric and pneumatic double-loop control and has a redundancy function; and brake action control over corresponding wheel brake chambers is achieved through a tractor rear axle double-channel bridge control valve and a semitrailer double-channel bridge control valve, and the state of brake air pressure is controlled, namely pressure increasing, pressure maintaining and pressure reducing. By reducing the output torque of an engine and implementing combined intervention of active braking, the folding instability working condition of the semi-trailer is effectively prevented, and posture correction of the folding instability working condition of the semi-trailer is achieved.
Owner:JILIN UNIV
Bending moment monitor and data processing method thereof
PendingCN107314842ARealize out-of-tolerance warningWith redundant functionElectric signal transmission systemsError preventionTransfer procedureControl system
The invention relates to a bending moment monitor and a data processing method thereof, belonging to the field of test equipment measurement and control system configuration. The bending moment monitor of the invention includes a data access interface, a power conversion module, a network port A, a network port B, a display interface, a USB interface and a real-time processor. The bending moment monitor of the invention can realize real-time bending moment monitoring and monitor the bending moment remotely, has a redundant function both in the collection process and in the transmission process, and can give a warning if the current bending moment value is out of tolerance.
Owner:BEIJING INST OF STRUCTURE & ENVIRONMENT ENG +1
A Novel Suspension Electromagnet Unit and Suspension Electromagnet Module
ActiveCN109525145BSuspension stabilityWith redundant functionMagnetic holding devicesElectromagnetsHemt circuitsEngineering
The invention discloses a novel suspension electromagnet unit and a suspension electromagnet module. The novel suspension electromagnet unit includes an inner pole plate and an outer pole plate arranged oppositely. An iron core and a coil are arranged between the inner pole plate and the outer pole plate. The iron core includes a first iron core and a second iron core that are vertically and evenly distributed in the longitudinal direction of the inner pole plate and the outer pole plate, and the coil includes a first coil and a first coil that are sleeved on the first iron core or the second iron core and arranged oppositely The second coil or the third coil and the fourth coil, the first coil, the second coil, the third coil and the fourth coil are connected in series or in parallel to form a circuit of a new suspension electromagnet unit, and the suspension electromagnet module includes Two independent new suspension electromagnet units, the new suspension electromagnet unit and the suspension electromagnet module of the present invention have a certain redundancy function, when a coil or drive circuit in the new suspension electromagnet unit fails, by adjusting the drive circuit Voltage, which can ensure the normal operation of the new suspension electromagnet unit.
Owner:湖南根轨迹智能科技有限公司
Dynamic voltage compensation device for AC/DC hybrid power distribution network and control method thereof
ActiveCN112803425AEnsure electricity safetySensitive loads do not affectAc network voltage adjustmentSingle ac network with different frequenciesElectrical connectionComputational physics
The invention relates to a dynamic voltage compensation device for an AC / DC hybrid power distribution network and a control method thereof. The device comprises an A-phase rectification transformation module, a B-phase rectification transformation module and a C-phase rectification transformation module which are electrically connected with one another; each of the A-phase rectification transformation module, the B-phase rectification transformation module and the C-phase rectification transformation module comprises: a high-voltage input side electrical wiring terminal, an electric reactor, a plurality of power units of which the input sides are connected in series and a plurality of isolation transformers of which the primary sides are electrically connected with the output sides of the power units respectively; the power units at the tail ends of the A-phase rectification transformation module, the B-phase rectification transformation module and the C-phase rectification transformation module are electrically connected with one another, and the isolation transformers at the tail ends are electrically connected with one another; the input side outgoing line terminals of the power units at the tail ends are short-circuited together to form a high-voltage neutral point N; and the direct current bus leading-out terminal of one power unit at the tail end is used as a low-voltage direct current output side negative wiring terminal and a low-voltage direct current output side positive wiring terminal.
Owner:普世通(北京)电气有限公司
CPCI power supply based on data collection and monitoring
InactiveCN110827746AWith redundant functionHas practical valueStatic indicating devicesApparatus without intermediate ac conversionCommunication unitData acquisition
A CPCI power supply based on data collection and monitoring is composed of a backboard connector, a redundancy control unit, a filter circuit unit, an isolation voltage conversion unit, an collectionamplification unit, an AD conversion unit, a temperature sampling unit, an MCU processing unit, an RS485 communication unit, an indicating lamp and a digital display unit. Double-path isolation voltage output has a redundancy function; a monitoring circuit on the board card monitors the voltage, the current and the temperature in real time, displays the voltage, the current and the temperature ona nixie tube in real time, and transmits the voltage, the current and the temperature to a host system for analysis and storage through an RS485 data communication channel; and an indicator light on the power panel displays operation and fault states.
Owner:TIANJIN EMBEDTEC
Parallel module unit applied to power electronic transformer
PendingCN113595408AHigh degree of modularityEasy to assemble and disassembleAc-dc conversionDc-dc conversionElectrical connectionPower density
The invention relates to the field of power electronics, and particularly provides a parallel module unit applied to a power electronic transformer, which comprises a power module (IGBT), a power unit board, a thermal management assembly, a flexible connection assembly, a fusing loop assembly and a module shell, adopts SCR-DAB topology, and adopts a parallel connection mode to share a direct current bus by multiple modules. The problem of insufficient current-carrying capacity of a single module is solved, and bidirectional energy flow is realized. The modularization degree of internal components is high, and production is convenient; due to the design of a guide rail type base, electrical connection can be rapidly achieved, and the maintainability is high; a flexible socket connection mode is adopted, so that a hot plug function is realized; due to a double-air-duct structure, the overall heat dissipation efficiency of the module is high; the size and weight are small and the power density is high; and a sheet metal part and an insulating part are matched for use, so that the mechanical performance and the electrical performance are effectively guaranteed, and the safety of the module unit is high.
Owner:QINGDAO TOPSCOMM COMM +1
PLC motion control panel
PendingCN108268003ASimple and reasonable structureGood compatibilityProgramme control in sequence/logic controllersEmbedded systemBus interface
The invention provides a PLC motion control panel which comprises a master control processor, at least one power chip, an Ethernet interface unit, a bus interface unit and an indication unit; the power chip is connected with the master control processor, and supplies power to the master control processor; the Ethernet interface unit is connected with the master control processor and comprises at least one Ethernet interface; the bus interface unit is connected with the master control processor, and used for bus communication; the indication unit is connected with the master control processor,comprises at least one indication component, and is used to indicating a work state of the PLC motion control panel; the master control processor comprises an ARM+FPGA embedded double-core chip; and the Ethernet interface unit include first, second and third Ethernet interfaces. The PLC motion control panel is simple and reasonable in structure, supports onsite bus protocols of EthercCAT, PowerLink and RS485, is high in compatibility, has a function of redundancy, and improves the reliability and safety of the control panel.
Owner:上海海得自动化控制软件有限公司
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