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35results about How to "The control method is easy to implement" patented technology
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Signal dynamic control technology of junction intersection of expressway exit ramp and local road
InactiveCN109035813APrevent capacity reductionMaximize traffic efficiencyControlling traffic signalsTraffic capacityData acquisition
The invention discloses signal dynamic control technology of a junction intersection of an expressway exit ramp and a local road. The signal dynamic control technology comprises the following steps: data collection: automatically obtaining real-time traffic flow data through video detectors arranged in the exit ramp in an expressway and in a junction intersection area of the exit ramp and the local road, wherein the real-time traffic flow data comprise a vehicle queue length of the exit ramp, and the vehicle queue length, a traffic volume and a vehicle arrival rate of each lane in each drivingdirection of each entrance lane of the junction intersection, and judging the operation condition of the traffic flow of the current junction area at different moments. According to the signal dynamic control technology disclosed by the invention, the signal control of the junction intersection of the expressway exit and the local road is optimized based on video real-time traffic information, sothat the occurrence of the decline of the traffic capacity of the expressway main line caused by the congestion of the junction intersection of the exit ramp and the local road can be prevented moreeffectively, the occurrence of traffic congestion is avoided, the traffic efficiency of the junction area and the expressway is maximized, and the signal dynamic control technology has a wide application range.
Owner:南京宁昱通交通科技有限公司
Aerial photography collection unmanned aerial vehicle for law enforcement of police fire protection and control method thereof
InactiveCN105235912AReduce quality problemsReduced footprintAircraft componentsRotocraftElectricityFire protection
The invention provides an aerial photography collection unmanned aerial vehicle for law enforcement of police fire protection and a control method thereof. The unmanned aerial vehicle comprises four groups of propeller actuating arm components, a square frame component, a camera component, a battery box and a support plate component. The four groups of propeller actuating arm components are fixed to the four ends of the square frame component. The battery box is fixed to the square frame component which is fixed to one side of the support plate component. The camera component is fixed to the other side of the support plate component. A battery in the battery box is electrically connected with the camera component. Through wireless communication connection, a control terminal controls the propeller actuating arm components to provide ascending power and drive the square frame component, the camera component, the battery box and the support plate component to leave the ground and ascend to appointed places for shooting recording of the camera. The unmanned aerial vehicle has the advantages of excellent maneuvering property, low demand for take-off and landing conditions and great cruising ability and is suitable for demanding flight missions in the process of law enforcement of police fire protection.
Owner:SHENZHEN GAOQI TECH CO LTD
Ghost probe traffic accident early warning system and -method
InactiveCN108973859AAccurate monitoringImprove warning effectElectric/fluid circuitOptical viewingEarly warning systemTraffic accident
The invention provides a ghost probe traffic accident early warning system and -method. The early warning system mainly comprises a monitoring module and a prevention module. The monitoring module andthe prevention module transmit data through a CAN bus module. The monitoring module is used for real-time monitoring whether there are objects in the preset distance range in the front and rear of the current vehicle, and measuring the distance data and the speed data between the object behind the current vehicle and the rear end of the current vehicle, and then transmitting the information to the prevention module;. According to the received information, the prevention module controls the character display unit, the voice playing unit and the prompt light unit to work, to alarm and remind, thereby reducing the occurrence of the ghost probe traffic accident, and improving the safety of the road traffic.
Owner:HEFEI UNIV OF TECH
Large-scale energy storage direct current high-voltage control system and control method therefor
InactiveCN107591829AEnsure safetyLogical controlAc network load balancingElectrical batteryLow voltage
The invention discloses a large-scale energy storage direct current high-voltage control system and control method therefor. The large-scale energy storage direct current high-voltage control system comprises a large-scale energy storage battery, a load / charger, a fuse protector, a dual-channel high-voltage direct current circuit breaker, a pre-charging relay, a general positive relay, a general negative relay, a low-voltage power supply, an emergency stop switch, a battery management system, a Hall sensor, a red indicating lamp, a green indicating lamp and a gold resistor. The large-scale energy storage direct current high-voltage control system is more strict in safety control, and through fusion protection and multiple safety protection of the direct current high-voltage circuit breaker, the general positive relay, the general negative relay, the emergency stop switch and the like, safety of the large-scale energy storage system can be ensured; and meanwhile, the control method forthe large-scale energy storage direct current high-voltage control system can be realized easily, and through modular setting, the generated codes can better satisfy logic control without causing faults.
Owner:ZHONGTIAN ENERGY STORAGE TECH
Synchronous control method for uncertain time-delay chaotic system
InactiveCN109581875AImprove securityThe control method is easy to implementAdaptive controlComputer hardwareSecure communication
The invention discloses a synchronous control method for an uncertain time-delay chaotic system. The method comprises the following steps that: A: according to a master and slave chaotic system mathematical model, determining a synchronous error system; B: determining a sliding mode surface equation; and C: according to the synchronous error system and the sliding mode surface equation, designingan adaptive sliding mode controller. The control method adopted by the invention is easy in implementation, can have a wide application prospect in the fields, including radars, secure communication,electronic countermeasure and the like, the safety of secure communication is improved, and control efficiency is greatly improved.
Owner:HARBIN UNIV OF SCI & TECH
Power output control method and power output control system for fuel cell power generation array system
ActiveCN108767294AImprove dynamic response performanceReduce computationFuel cell controlControl signalData acquisition
The invention discloses a power output control method and a power output control system for a fuel cell power generation array system. According to the present invention, by collecting the output voltages and the inductance current signals of each DC / DC circuit in each fuel cell system, low-frequency ripple control is stabilized to obtain a switch-on time and a switch-off time, such that a switchcontrol signal is generated so as to carry out DC / DC converter control; the control system comprises a data acquisition module, an outer loop voltage control module, a slope calculation module, a switch control module and a modulation and demodulation module; the slope transformation of the inductance current under the switch control is calculated to obtain a duty ratio, and the switch signal is controlled by the modulation and demodulation module so as to carry out DC / DC converter control; the performance of the DC / DC converter is improved by stabilizing the low-frequency ripple control; andthe multi-stack fuel cell uses the parallel topology structure and controls the mean current, such that each stack in the fuel cell array can output the required power.
Owner:SOUTHWEST JIAOTONG UNIV
Vehicle air-conditioner control system and method
The invention aims at providing a vehicle air-conditioner control system and method which are used for defrosting in advance in winter and cooling a vehicle in advance in summer, thereby improving the comfort level of the vehicle and guaranteeing the security of a driver. The vehicle air-conditioner control system comprises a controller, an air-conditioner system, an engine, a wireless signal receiving unit and a wireless signal emitting unit; the controller is respectively connected with the air-conditioner system, the engine and the wireless signal receiving unit; and after receiving a signal emitted from the wireless signal emitting unit, the wireless signal receiving unit sends the signal to the controller which control the air-conditioner system and the engine to work according to the signal. The vehicle air-conditioner control system is simple in structure, and low in cost, and the control method is easy to realize; the in-vehicle environment can be adjusted before a passenger enters into the vehicle so as to meet the comfort level requirement of the passenger.
Owner:CHERY AUTOMOBILE CO LTD
Hydraulic system, motor sweeper hydraulic system and motor sweeper with motor sweeper hydraulic system
InactiveCN105422526AReduce in quantityLow costServomotorsRoad cleaningHydraulic motorControl engineering
The invention provides a hydraulic system, a motor sweeper hydraulic system and a motor sweeper with the motor sweeper hydraulic system. The hydraulic system comprises a hydraulic oil tank, a hydraulic pump, an oil conveying pipe, an oil return pipe, at least one oil pipe and a plurality of hydraulic motors. The hydraulic oil tank is provided with a hydraulic oil inlet and a hydraulic oil outlet. The hydraulic pump is provided with a hydraulic pump inlet and a hydraulic pump outlet, and the hydraulic pump inlet is communicated with the hydraulic oil outlet through a pipe. The oil conveying pipe is communicated with the hydraulic pump outlet. The oil return pipe is communicated with the hydraulic oil inlet. The two ends of the oil pipes are communicated with the oil conveying pipe and the oil return pipe respectively. At least two hydraulic motors are connected to one oil pipe in series. Compared with a hydraulic system in the prior art, according to the hydraulic system, the number of branches from the oil conveying pipe to the oil return pipe is lowered, the requirements for the hydraulic oil tank and a gear pump are lowered, and equipment cost is greatly reduced.
Owner:CHANGSHA FOTON AUTOMOBILE TECH
PI (Proportional-Integral) partition control method for inverter system
ActiveCN110149067AFast dynamic responseStable Steady State OutputAc-dc conversionWork statusIntegral coefficient
The invention discloses a PI (Proportional-Integral) partition control method for an inverter system, which comprises the steps of performing partition division on the working state of the inverter system, judging the current working state of the inverter system when the inverter system is in operation, and selecting a corresponding PI parameter group to perform control on the inverter system according to the current working state of the inverter system. PI control at the DC side and the AC side of the system is carried out in a partition mode according to a predetermined judgment mechanism; asoft start interval, a large load interval, a large load reduction interval and a stable working interval respectively correspond to different PI parameter groups; and each parameter groups include adifferent proportional coefficient Kp, integral coefficient Ki and PWM duty ratio saturation amplitude limit Lim, thereby enabling the system to always maintain the optimal state when being suddenlyswitched in different working conditions such as no load, light load, heavy load and full load, not only have fast response, but also have safe steady-state output.
Owner:SICHUAN CHANGHONG ELECTRIC CO LTD
Control system and control method for asymmetric secondary side current of buck-boost resonant converter
InactiveCN110784112AReal-time adjustment of on-timeSimple structureEfficient power electronics conversionDc-dc conversionControl systemHemt circuits
The invention provides a control system and a control method for asymmetric secondary side current of a buck-boost resonant converter, which belong to the technical field of resonant converter control. The control system comprises a first current sampling circuit, a second current sampling circuit, a control circuit taking an MCU as a core, and an isolation driving circuit. Under the condition ofprimary side current distortion, after sampling of a plurality of working periods, a difference value between current peak value average values of an upper half period and a lower half period of a secondary side rectification network of the converter is obtained, logic comparison is carried out on the difference value and a set value, and secondary side current of the converter is enabled to be symmetrical by adjusting conduction time of a preceding-stage power tube of a primary side of the converter. The control system is simple in structure and the control method is easy to implement. The secondary side current of the transformer is symmetrical, the heat loss is reduced, and the efficiency is improved.
Owner:SOUTHEAST UNIV
Urea hydrolysis reactor control system and urea hydrolysis reactor control method based on heat feed-forward signals
ActiveCN105116719AReduce the amplitudeReduce wasteControllers with particular characteristicsAutomatic controlLoad instruction
The invention relates to a urea hydrolysis reactor control method based on the heat feed-forward signals, which comprises the steps of 1) acquiring a transfer function from a hydrolysis rector load to heating steam consumption; 2) generating a path of heating steam consumption signals through the transfer function by a hydrolysis rector load instruction, and converting the heating steam consumption signals into corresponding first heating steam governing valve openness signals; 3) generating second heating steam governing valve openness signals through a governing valve openness control function by a hydrolysis rector pressure deviation signals, and acquiring a deviation value; 4) leading the first heating steam governing valve openness signals into heating steam governing valve openness automatic control logic to act as feed-forward signals, and determining an openness reference value; and 5) weighing the heating steam governing valve openness reference value and the deviation value, outputting the weighed heating steam governing valve openness reference value and the weighed deviation value so as to acquire heating steam governing valve openness signals under variable load conditions. The control system provided by the invention comprises a PLC (programmable logic controller) which is used for receiving the hydrolysis reactor load instruction, a hydrolysis reactor pressure set value and measurement signals.
Owner:CHINA HUANENG GRP CO LTD +1
Method and device for laser shot-blasting forming of aircraft wing
ActiveCN106180471AImprove processing efficiencyImprove real-time performanceAircraft componentsShock waveControl system
The invention relates to a method and device for laser shot-blasting forming of an aircraft wing. The device for laser shot-blasting forming of the aircraft wing is composed of a two-axis rotating workbench, a laser device, a lens assembly, a control device, a big data analysis system and the like. The control device plans position information of laser shock according to information of the big data analysis system and controls the two-axis rotating workbench to rotate according to the position information, so that the wing is rotated to the shock position, and the lens assembly is controlled to move to the shock position at the same time. The lens assembly measures the distance between the shock position and a lens and moves the focusing lens to focus lasers to the shock position, and the required spot diameter is obtained. After the lens assembly is positioned, a signal is emitted to a control system, the control system controls the laser device to emit lasers according to planned laser shock parameters, shock waves generated by the lasers are used for making a workpiece deform, and thus forming is achieved.
Owner:GUANGDONG UNIV OF TECH
TCR type SVC voltage control method for transformer substation
InactiveCN101330214AImprove stabilityAvoid frequent switchingFlexible AC transmissionAc network voltage adjustmentDead bandControl objective
The invention discloses a TCR type SVC voltage control method used in a transformer substation. The method comprises the following steps: the control objective fixed value as well as the adjusting dead area of 220 / 500 kV voltage and the limit value as well as the TCR power output upper and lower limit values of 10 / 35 kV voltage are set respectively; the 220 / 500 kV voltage and the 10 / 35 kV voltage are measured and judged; aiming at the different 220 / 500 kV and 10 / 35 kV voltages, different TCRs as well as the adjusting order and the adjusting method of a capacitive compensating branch are adopted. The method can effectively integrates the level of the 10 / 35 kV voltage while controlling the 220 / 500 kV voltage of the transformer substation, thereby avoiding the frequent switch of the capacitive compensating branch, considering the demands of various complicated working conditions, and having wider applicability; at the same time, a self-regulating factor fuzzy controller is adopted to control the TCR output, and an error weighting coefficient which automatically adjusts according to the error magnitude is introduced to satisfy the demands of different control stages, thereby improving the whole control effect.
Owner:ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
Chain type converter-based power distribution network electric energy quality comprehensive control method and system
ActiveCN107069725AImprove current control accuracyIncrease profitPolyphase network asymmetry elimination/reductionReactive power adjustment/elimination/compensationCapacitancePower quality
The present invention relates to a chain type converter-based power distribution network electric energy quality comprehensive control method and system. The method includes a system-level control strategy and a device-level control strategy, wherein the system-level control strategy realizes load reactive power, harmonic and unbalanced current detection, power distribution network PCC fundamental wave positive sequence voltage control, and power distribution network PCC fundamental wave negative sequence voltage control, and comprehensively generates chain type converter current control instruction signals, and the device-level control strategy realizes sub-module direct-current side capacitor voltage control of chain type converter control, realizes three-phase conversion chain current control of a chain type converter according to a current control instruction from the system level, and generates chain type converter switching tube duty cycle signals. With the method and system provided by the technical scheme provided by the invention adopted, electric energy quality problems such as harmonic, flicker and imbalance in a power distribution network can be comprehensively controlled.
Owner:CHINA EPRI SCIENCE & TECHNOLOGY CO LTD +4
Indoor device for automatically receiving packages, and control method of indoor device
ActiveCN109867241AAvoid the problem of not being able to come directly to the doorSimple structureLifting devicesEngineeringHanging basket
The invention discloses an indoor device for automatically receiving packages. The indoor device comprises an entry door and a controller MCU; a putting opening is formed in the middle of the entry door, and the entry door is provided with a baffle used for opening or closing the putting opening; the baffle is driven by a linear motor, and a wall on the upper part of the entry door is fixedly connected with a rotating motor which is used for driving a lifting rope; the tail end of the lifting rope is connected with a hanging basket, and the side, close to the entry door, below the bottom of the hanging basket is provided with a downward-extending balancing rod; an upper position sensor used for detecting the upper limit position of the hanging basket is arranged on the wall on the upper part of the entry door, and a middle position sensor used for detecting the time when the hanging basket is located in the putting opening and a lower position sensor used for detecting the time when the hanging basket is located on the near-ground position are arranged on the entry door; and the controller MCU is connected with the linear motor, the rotating motor, the upper position sensor, the middle position sensor and the lower position sensor. The indoor device can automatically receive the packages when no person in a room, and is simple in structure and easy to realize.
Owner:CHANGSHU INSTITUTE OF TECHNOLOGY
TCR type SVC voltage control method for transformer substation
InactiveCN101330214BAvoid frequent switchingImprove stabilityFlexible AC transmissionAc network voltage adjustmentLower limitTransformer
The invention discloses a TCR type SVC voltage control method used in a transformer substation. The method comprises the following steps: the control objective fixed value as well as the adjusting dead area of 220 / 500 kV voltage and the limit value as well as the TCR power output upper and lower limit values of 10 / 35 kV voltage are set respectively; the 220 / 500 kV voltage and the 10 / 35 kV voltageare measured and judged; aiming at the different 220 / 500 kV and 10 / 35 kV voltages, different TCRs as well as the adjusting order and the adjusting method of a capacitive compensating branch are adopted. The method can effectively integrates the level of the 10 / 35 kV voltage while controlling the 220 / 500 kV voltage of the transformer substation, thereby avoiding the frequent switch of the capacitive compensating branch, considering the demands of various complicated working conditions, and having wider applicability; at the same time, a self-regulating factor fuzzy controller is adopted to control the TCR output, and an error weighting coefficient which automatically adjusts according to the error magnitude is introduced to satisfy the demands of different control stages, thereby improvingthe whole control effect.
Owner:ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
Aerial photography acquisition drone for public security fire law enforcement and its control method
InactiveCN105235912BReduce quality problemsReduced footprintAircraft componentsRotocraftElectricityFire protection
The invention provides an aerial photography collection unmanned aerial vehicle for law enforcement of police fire protection and a control method thereof. The unmanned aerial vehicle comprises four groups of propeller actuating arm components, a square frame component, a camera component, a battery box and a support plate component. The four groups of propeller actuating arm components are fixed to the four ends of the square frame component. The battery box is fixed to the square frame component which is fixed to one side of the support plate component. The camera component is fixed to the other side of the support plate component. A battery in the battery box is electrically connected with the camera component. Through wireless communication connection, a control terminal controls the propeller actuating arm components to provide ascending power and drive the square frame component, the camera component, the battery box and the support plate component to leave the ground and ascend to appointed places for shooting recording of the camera. The unmanned aerial vehicle has the advantages of excellent maneuvering property, low demand for take-off and landing conditions and great cruising ability and is suitable for demanding flight missions in the process of law enforcement of police fire protection.
Owner:SHENZHEN GAOQI TECH CO LTD
High-compatibility space radiation detector ground calibration device and control method thereof
PendingCN114755713ARealize splitRealize attitude adjustmentRadiation measurementLifting framesEngineeringCalibration test
The invention discloses a high-compatibility space radiation detector ground calibration device and a control method thereof. The calibration device comprises a two-section lifting platform, a translation transportation platform and an interface board. The ground calibration device is reasonable in structural planning and high in integration level, and the requirements of high bearing capacity, large stroke, the lowest table top height and the like required by the space radiation detector in the ground calibration test process can be met. Meanwhile, the device has relatively high compatibility, can meet the calibration test requirements of loads of different types of space radiation detectors, such as an X-ray detector and a space energy measuring device, can realize quick alignment of the calibration platform and a beam ray outlet, meets the requirements of different detectors on different inclination angles of the platform surface of the calibration platform, and is high in practicability. And the control method is easy to implement, contributes to shortening the test time and improving the test efficiency, and is suitable for being popularized and used in the field.
Owner:ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
A uniform material distribution control method for reciprocating feeding and distributing cranes
ActiveCN110950013BReal-time adjustment of operating frequencyChange speedConveyorsControl devices for conveyorsControl engineeringElectric machinery
Owner:CHINA TOBACCO JIANGSU INDAL
An engine igniter start interlock control system and control method thereof
ActiveCN108612591BRealize ignition interlock functionSimple control systemEngine controllersMachines/enginesSynchronous motorControl system
Owner:苏州半唐电子有限公司
Direct-current motor single chip microcomputer driving method and driving system thereof
InactiveCN103296949AEasy to implementSimple and efficient operationField or armature current controlControl functionCircuit design
The invention discloses a direct-current motor single chip microcomputer driving method and a driving system for implementing the method. The driving system comprises a single chip microcomputer, an LED (light-emitting diode) display module, a key setting module, a PWM (Pulse-Width Modulation) signal generating circuit, an output snubber circuit and a speed collecting module. The control method is based on a single chip microcomputer system, changes the size of an average voltage according to the duty cycle of voltages on an armature of a direct-current motor and fundamentals of PMW speed governing and accordingly controls the rotation speed of the motor and achieves smooth speed regulation of the direct-current motor, and controls changes of speed through the single chip microcomputer. The driving system is simple and reasonable in overall circuit design, skillfully combines a single-chip microcomputer technology, enables various control functions and algorithms to be completed by utilizing software technologies, provides more flexibility for the control of the direct-current motor, achieves higher performance, meanwhile, can save manpower resources and reduce system costs so as to effectively improve working efficiency.
Owner:INST OF ELECTRONICS & INFORMATION ENG IN +1
A method and device for laser shot peening of aircraft wings
ActiveCN106180471BImprove processing efficiencyImprove real-time performanceAircraft componentsShock waveControl system
The invention relates to a method and device for laser shot-blasting forming of an aircraft wing. The device for laser shot-blasting forming of the aircraft wing is composed of a two-axis rotating workbench, a laser device, a lens assembly, a control device, a big data analysis system and the like. The control device plans position information of laser shock according to information of the big data analysis system and controls the two-axis rotating workbench to rotate according to the position information, so that the wing is rotated to the shock position, and the lens assembly is controlled to move to the shock position at the same time. The lens assembly measures the distance between the shock position and a lens and moves the focusing lens to focus lasers to the shock position, and the required spot diameter is obtained. After the lens assembly is positioned, a signal is emitted to a control system, the control system controls the laser device to emit lasers according to planned laser shock parameters, shock waves generated by the lasers are used for making a workpiece deform, and thus forming is achieved.
Owner:GUANGDONG UNIV OF TECH
Floating valve control method for vertical evaporative humidifier for preventing water leakage
ActiveCN113465064AThe control method is easy to implementSolve pain pointsMechanical apparatusSpace heating and ventilation safety systemsWater leakageWater storage tank
The invention discloses a floating valve control method for a vertical evaporative humidifier for preventing water leakage, and belongs to an internal control method of an evaporative humidifier. The floating valve control method comprises the following steps that a sensor module correspondingly evaporates water level values in a water tank and transmits the water level values to a main control module; the main control module compares the current water level value with a preset threshold value and judges whether the current water level value is larger than the preset threshold value or not; if yes, the output end of a driving motor jacks up a valve rod, the floater end of a floating valve is limited by the valve rod, the floater end cannot fall at the moment, and a sealing plug at the adjusting end of the floating valve is kept sealed at the water outlet of a water storage tank; otherwise, the current state is kept. Free swing of the floating valve is affected by deposited dirt at the bottom of the evaporation water tank, so that when the water level value is larger than the preset highest water level value, the floater end of the floating valve leaves the bottom of the evaporation water tank forcibly through jacking of the valve rod, water leakage caused by overflow due to the fact that the water level in the evaporation water tank is too high is avoided, and when the water level is lower than the preset threshold value, the floating valve returns to a normal state.
Owner:AIMBON (CHENGDU) ELECTRIC APPLICANCE CO LTD
Transcritical carbon dioxide heat pump system control method
PendingCN114593534AImprove performanceThe control method is easy to implementMechanical apparatusCompression machinesChemistryHybrid system
The invention discloses a transcritical carbon dioxide heat pump system control method. The method comprises the steps that A, a transcritical carbon dioxide heat pump system is subjected to static analysis; specifically, the method comprises the following steps that B, the control state conversion of the transcritical carbon dioxide heat pump system is judged, and whether dynamic control needs to be carried out or not is determined by analyzing historical data; and C, collecting and analyzing system parameters to perform dynamic control. According to the water pump, the traditional energy supply efficiency can be improved, and particularly, the CO2 heat pump water heater or the mixing system comprising the water pump is acknowledged to be good in various parameters at present.
Owner:CHINA PETROLEUM & CHEM CORP +1
Control system and method for urea hydrolysis reactor based on heat feedforward signal
ActiveCN105116719BReduce the amplitudeReduce wasteControllers with particular characteristicsLoad instructionAutomatic control
The urea hydrolysis reactor control method based on the heat feed-forward signal of the present invention comprises the following steps: 1) Obtain the transfer function from the load of the hydrolysis reactor to the amount of heating steam; 2) Generate a path of heating steam through the transfer function according to the load instruction of the hydrolysis reactor The amount signal is converted into the corresponding first heating steam door opening signal; 3) The second heating steam door opening signal is generated by the pressure deviation signal of the hydrolysis reactor through the door opening control function to obtain the deviation value; 4) The first heating steam regulating door opening signal is introduced into the heating steam regulating door opening automatic control logic as a feed-forward signal to determine the opening reference value; 5) The heating steam regulating door opening reference value and deviation value are weighted and output to obtain variable load Heating steam door opening signal under working conditions. The control system of the present invention includes a PLC controller for receiving the load instruction of the hydrolysis reactor, the pressure setting value and the measurement signal of the hydrolysis reactor.
Owner:CHINA HUANENG GRP CO LTD +1
Power output control method and system of a fuel cell power generation array system
ActiveCN108767294BImprove dynamic response performanceReduce computationFuel cell controlControl signalAverage current
Owner:SOUTHWEST JIAOTONG UNIV
A method for controlling the plate chain speed of an automatic battery packer
ActiveCN103309257BGood speed controlImprove transmission efficiencyProgramme control in sequence/logic controllersOperation modeEngineering
Owner:HANGZHOU DIANZI UNIV
A device for automatically receiving parcels indoors and its control method
ActiveCN109867241BAvoid the problem of not being able to come directly to the doorSimple structureLifting devicesElectric machineHanging basket
The invention discloses an indoor device for automatically receiving packages. The indoor device comprises an entry door and a controller MCU; a putting opening is formed in the middle of the entry door, and the entry door is provided with a baffle used for opening or closing the putting opening; the baffle is driven by a linear motor, and a wall on the upper part of the entry door is fixedly connected with a rotating motor which is used for driving a lifting rope; the tail end of the lifting rope is connected with a hanging basket, and the side, close to the entry door, below the bottom of the hanging basket is provided with a downward-extending balancing rod; an upper position sensor used for detecting the upper limit position of the hanging basket is arranged on the wall on the upper part of the entry door, and a middle position sensor used for detecting the time when the hanging basket is located in the putting opening and a lower position sensor used for detecting the time when the hanging basket is located on the near-ground position are arranged on the entry door; and the controller MCU is connected with the linear motor, the rotating motor, the upper position sensor, the middle position sensor and the lower position sensor. The indoor device can automatically receive the packages when no person in a room, and is simple in structure and easy to realize.
Owner:CHANGSHU INSTITUTE OF TECHNOLOGY
Stepping motor control method and control device implementing stepping motor control method
InactiveCN103296950AEasy to implementSimple and efficient operationEnergy industryDynamo-electric converter controlStepper motor controlNixie tube
The invention discloses a stepping motor control method and a control device implementing the stepping motor control method. The control device comprises a 16-bit single chip microcomputer SPCE061A, a drive chip L298N, a keyboard, a Sunplus single chip microcomputer and a 74LS164 device, wherein the drive chip L298N, the keyboard, the Sunplus single chip microcomputer and the 74LS164 device are connected with the single chip microcomputer SPCE061A. The drive chip L298N and a stepping motor are connected with the single chip microcomputer SPCE061A, and the 74LS164 device is connected with a nixie tube. The stepping motor control method is easy to achieve, simple and convenient to operate and simple in control step. The control device is simple and reasonable in whole circuit design, small in size and convenient to use and control, the problem of miniaturization of the stepping motor is solved, and the accuracy of the stepping motor is improved. In addition, the control device has a displaying function and a voice function, so that an operator can conveniently know a working state of the stepping motor at any time, the working quality is effectively improved, the work efficiency is improved, and large-scale popularization and application are facilitated.
Owner:INST OF ELECTRONICS & INFORMATION ENG IN +1
Continuously variable transmission (CVT) method and device for static fluid
InactiveCN102011849BPlay a buffer roleSimple structureGearing controlFluid gearingsClosed loopContinuously variable transmission
The invention discloses a continuously variable transmission (CVT) method and device for static fluid, belonging to the technical field of fluid transmission and control. The device comprises more than two variable units, wherein each variable unit comprises a variable element and a rectifying device; the variable units are connected in series by oil pipelines to form a closed loop; due to the continuity of oils in the closed loop, the revolving speed relationship of the variable elements is determined on displacement relationships among the variable elements; and the variable elements which are taken as joints of a passive robot, and accurate control is carried out on the displacement of each variable element to acquire a relationship of transmission ratio of each joint, thus providing incomplete virtual constraint for end movement of the passive robot. Hydraulic transmission is used in the invention, thus mechanical clearness does not occur, and the oils can exert buffer action in actual working conditions. The displacement relationships among the variable elements are changed so as to realize the CVT; and the device has simple structure and the control method is easy to implement.
Owner:BEIHANG UNIV
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