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49results about How to "Realize hierarchical control" patented technology

Kerb with drainage function and pollutant intercepting function

The invention relates to the technical field of urban road rainwater treatment, in particular to a kerb with the drainage function and the pollutant intercepting function in an urban road rainwater treatment system. The kerb comprises a water inlet, an overflow port, a drainage channel, an overflow channel and a rainwater grating. The rainwater grating is arranged at the water inlet, the included angles between grating bars of the rainwater grating and the inflow direction of the rainwater runoff ranges from 108 degrees t 135 degrees, and the drainage channel is arranged at the bottom of the overflow channel and communicated with a catch basin. The kerb has certain drainage capacity, can make excessive rainwater flow into the greenbelt so as to effectively delay occurrence of the peak value, and can effectively improve the overall drainage capacity of an urban road and reduce the occurrence frequency of urban inland inundation. The kerb further achieves hierarchical control over rainwater runoff pollutants, effectively improves the quality of discharged rainwater and reduces rainwater runoff pollution loads. The kerb can be produced through a modular unit and thus is convenient to construct, install, clean and maintain.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE

Two-stage vibration reducing ankle-foot integrated parallel low-impact walking foot mechanism and controlling method

InactiveCN106828657AActive and controllable ankle-foot freedomBalance difficultyVehiclesHydraulic cylinderAnalog robot
The invention discloses a two-stage vibration reducing ankle-foot integrated parallel low-impact walking foot mechanism and a controlling method, which can be used for effectively reducing foot-ground impact force and are capable of performing active control. The walking foot mechanism comprises a foot-leg connecting platform, a food end bottom connecting platform, three groups of moving pairs, three groups of revolute pairs and three groups of ball pairs, a lower platform simulates the foot end of a robot, the moving pairs are driving pairs, and are used for simulating legs of the robot, an anti-vibration pad, with frictional force, is inlaid in the lower surface of the food end bottom connecting platform, and is used as first-stage vibration reduction, the three groups of moving pairs are arranged in a mirror symmetry manner, and each group of moving pair comprise a hydraulic cylinder, a spring damper, a servo valve and a controller, wherein the spring damper sleeves a cylinder piston rod of the hydraulic cylinder, and is used as second-stage vibration reduction, so that the whole mechanism forms a lower-mobility parallel mechanism with a three freedom degree structure, and two rotational freedom along the directions of x and y and a translational freedom degree along the direction of z are realized. The mechanism and method provided by the invention have the advantages that the plan and control of the robot are flexible and reliable, and the stability is high.
Owner:HARBIN INST OF TECH

Automobile electric tail door ECU control main board

The invention discloses an automobile electric tail door ECU control main board. The automobile electric tail door ECU control main board comprises a main board body, a microprocessor arranged on themain board, an EEPROM circuit module, a high-speed CAN transceiver, a first bridge type motor drive module driving a supporting rod motor, a power supply power module, a power source reverse connection protection circuit module, a high-end voltage drive module driving a tail door unlocking motor, a second bridge type motor drive module driving a tail door self-suction motor, a debugging downloading connector facilitating peripheral equipment inserting and connecting, and a data state monitoring connector. The input end of the high-speed CAN transceiver is electrically connected with the outputend of a signal collection module. The signal collection module is electrically connected with an electric supporting rod motor Hall sensor, a tail door unlocking motor Hall sensor and a tail door self-suction motor Hall sensor. The output end of the high-speed CAN transceiver is electrically connected with the microprocessor. The ECU control main board is stable in performance, program upgradingis convenient, the maintaining cost is low, power source step control is achieved, power supply is stable, power source reverse connection protection is achieved, reliability is high, and the fault rate is low.
Owner:芜湖瑞智安汽车科技有限公司

Flow control valve special for air spring with additional air chamber

The invention discloses a flow control valve special for an air spring with an additional air chamber. The upper part of a pipe body of the control valve is provided with a control chamber a, the lower part of the pipe body of the control valve is provided with a pipeline c which is coaxial with the control chamber a and is connected with the additional air chamber, and the side part of the pipe body of the control valve is coaxially connected with a control valve core; the control valve core is sequentially and continuously provided with a d section, an e section, an f section, a g section and an h section, and the cross sections of the d section and the e section are circular and are respectively in clearance fit with the inner diameter of the control chamber a and the pipeline c; the cross sections of the f section and the g section are round platforms the outer diameter of which decreases sequentially; the cross section of the h section is conical; and the e section, the f section, the g section and the h section extend into the pipeline c to form different through-flow cross section areas, and the stepping control of the through-flow area is realized; when the changes of a damping ratio is dramatic as the changes of the through-flow areas, the flow-through areas change slowly, and the regulation is more accurate; and the change of the damping ratio as the changes of the flow-through areas is slower than the changes of the through-flow areas, and the regulation is more flexible.
Owner:JIANGSU UNIV

High-speed railway traction system stepped regulation and band suppression EMI filter and design method

ActiveCN109560786ARealize hierarchical controlReduce the size of external electromagnetic interferenceMultiple-port networksCapacitanceTraction system
The invention discloses a high-speed railway traction system stepped regulation and band suppression EMI filter, which comprises three input lines connected to equipment, and is characterized in thatthe L-line and N-line are respectively provided with differential-mode inductors, and a common-mode choke coil is connected between the L-line and the N-line; n common-mode capacitor banks are connected between upper and lower output ends of the common-mode choke coil and the PE-line, and each common-mode capacitor bank includes two common-mode capacitors and a switch; the upper output end and thelower output end of the common-mode choke coil are connected to n differential-mode capacitor banks, each differential-mode capacitor bank includes a differential-mode capacitor and a switch, each common-mode capacitor bank forms a switched capacitor bank together with one differential-mode capacitor bank, and N switched capacitor banks are arranged according to requirements. The invention further discloses a design method of the high-speed railway traction system stepped regulation and band suppression EMI filter. The filter disclosed by the invention is reliable in operation. The filter design method is simple and easy to implement.
Owner:XIAN UNIV OF TECH

A two-stage shock-absorbing ankle-foot integrated parallel low-impact walking foot mechanism and control method

InactiveCN106828657BBalance difficultyIncrease stiffnessVehiclesHydraulic cylinderAnalog robot
The invention discloses a two-stage vibration reducing ankle-foot integrated parallel low-impact walking foot mechanism and a controlling method, which can be used for effectively reducing foot-ground impact force and are capable of performing active control. The walking foot mechanism comprises a foot-leg connecting platform, a food end bottom connecting platform, three groups of moving pairs, three groups of revolute pairs and three groups of ball pairs, a lower platform simulates the foot end of a robot, the moving pairs are driving pairs, and are used for simulating legs of the robot, an anti-vibration pad, with frictional force, is inlaid in the lower surface of the food end bottom connecting platform, and is used as first-stage vibration reduction, the three groups of moving pairs are arranged in a mirror symmetry manner, and each group of moving pair comprise a hydraulic cylinder, a spring damper, a servo valve and a controller, wherein the spring damper sleeves a cylinder piston rod of the hydraulic cylinder, and is used as second-stage vibration reduction, so that the whole mechanism forms a lower-mobility parallel mechanism with a three freedom degree structure, and two rotational freedom along the directions of x and y and a translational freedom degree along the direction of z are realized. The mechanism and method provided by the invention have the advantages that the plan and control of the robot are flexible and reliable, and the stability is high.
Owner:HARBIN INST OF TECH

An engine thermal management system and method

The invention provides an engine thermal management system, comprising a first cylinder head heat dissipation circuit composed of a coolant pump, a three-way valve, a cylinder head cooling jacket, a first temperature sensor and a first thermostat, a coolant pump, a three-way The valve, the cylinder block cooling jacket, the second temperature sensor and the second thermostat constitute the first cylinder block heat dissipation circuit, the coolant pump, the three-way valve, the cylinder head cooling jacket, the first temperature sensor, the first thermostat and the heat dissipation The second cylinder head heat dissipation circuit and the coolant pump, the three-way valve, the second temperature sensor, the second thermostat and the radiator form the second cylinder block heat dissipation circuit; on this basis, the present invention also provides an engine Thermal management method: It can carry out targeted thermal management according to the actual thermal load of the cylinder block and cylinder head, avoiding the local excessive cooling or insufficient cooling that is easily caused by traditional thermal management methods, and ensuring that all parts of the engine are at a suitable temperature. It is beneficial to improve the working efficiency and service life of the engine.
Owner:NINGBO GEELY ROYAL ENGINE COMPONENTS +1

Novel wireless induction coil sensor power supply method

PendingCN113555968AGet rid of wiring requirementsReduced space requirements and weightCircuit arrangementsReceiver coilCapacitance
The invention discloses a novel wireless induction coil sensor power supply method. According to the invention, a signal generator generates a signal with a frequency needing to generate resonance, and provides the signal to an energy transmitting coil, the energy transmitting coil and a capacitor form resonance, and a power signal is outwards transmitted to an energy repeating coil; the energy relay coil relays energy of the transmitting coil to the receiving coil, the receiving coil and the internal capacitor form a resonance circuit, changes of an electromagnetic field are detected, a resonance phenomenon occurs to form current, finally, a power supply needed by a load is formed through the voltage-stabilized power supply, and a power supply used for working of the sinusoidal signal generator is generated through the DC power supply. A sinusoidal signal generates two complementary sinusoidal power supplies through the signal up-down power operational amplifier, the two sinusoidal power supplies are provided for the capacitor array and the transmitting coil to generate resonance, the resonance is transmitted to the space in the form of electromagnetic waves, a resonance circuit formed by the capacitor array and the power receiving coil forms alternating current, and then direct current voltage is formed through the bridge rectifier circuit. The direct current voltage is supplied to a charge pump for storing the energy.
Owner:西安子国微科技有限公司

Crystal control rotation integrated control system based on vacuum coating

The invention discloses a crystal control rotation integrated control system based on vacuum coating. Compared with the prior art, the crystal control rotation integrated control system comprises an upper computer used for monitoring coating process equipment and transmitting and receiving control signals, a PLC main control module connected with the upper computer, a control management module connected with the PLC main control module, a first control module, a second control module, a rotation driving execution module, a rotating stand mounting execution module, a water cooling circulation execution module, a temperature regulation and control detection module, a gas regulation and control detection module, a film thickness regulation and control detection module, a communication session system, a coating execution terminal and a coating detection terminal; wherein the first control module and the second control module are connected with the control management module; the rotation driving execution module, the rotating stand mounting execution module and the water cooling circulation execution module are connected with the first control module; the temperature regulation and control detection module, the gas regulation and control detection module and the film thickness regulation and control detection module are connected with the second control module; the communication session system is in communication connection with the first control module and the second control module; and the coating execution terminal and the coating detection terminal are arranged on the coating process equipment and are connected with the communication session system. Compared with the prior art, a multifunctional transmission device and the execution terminal can be integrally controlled to carry out coating operation, and the coating control precision is improved.
Owner:湖南宇诚精密科技有限公司

Digital control device and method for oil temperature of gearbox of wind driven generator

The invention discloses a digital control device and method for the oil temperature of a gearbox of a wind driven generator. The device comprises a temperature measuring module, a digital quantity processor module, a driving module and a power supply. The oil temperature value of the gearbox of the wind driven generator is measured through the temperature measuring module and provided for the digital quantity processor module, the digital quantity processor module controls on-off of three relays in the driving module according to the oil temperature measuring value, and then three electromagnetic valves at an oil inlet of the gearbox of the wind driven generator are controlled. By judging whether oil in the gearbox of the wind driven generator passes through a cooler or not, graded digitalcontrol that the oil temperature of the gearbox of the wind driven generator cannot exceed the rated working range is achieved, a mechanical temperature control valve with the high failure rate is replaced, and safe and stable operation of the wind driven generator is guaranteed; and frequent replacement of the temperature control valve is avoided, the production cost of a wind power plant is reduced, the influence of the oil temperature of the gearbox of the wind driven generator on a wind driven generator body is reduced, and reliable operation of the wind driven generator is guaranteed from the perspective of the oil temperature of the gearbox.
Owner:XIAN THERMAL POWER RES INST CO LTD
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