56results about How to "Implement redundant control" patented technology

The invention provides a compact integrated redundancy controller and a controlling method thereof. The controller is provided with two controllers which have identical structure and can be used alternatively by displacing. Each controller is provided with a storage chip, a flash memory chip, a firmware chip and a programmable apparatus which are respectively connected with a main control chip; the controller is also provided with a first serial port transceiver, a second serial port transceiver, a PCI bridge piece and a network card controller. The serial port transceivers are connected with a CPCI connector by a RS422 serial port; the network card controller is connected with the CPCI connector by an Ethernet port; the PCI bridge piece is connected with the CPCI connector by a CPCI bus; the serial port transceivers are also connected with a maintenance serial port; a programmable apparatus PLD is also connected with the CPCI connector by a HA control signal. The methods comprise the starting method of main/standby controllers, the method that a standby controller is upgraded into a main controller automatically and a check point protocol control method when the main controller and the standby controller are switched in a system. The controller and the method can upgrade the system controller of a traditional CPCI system into a double-redundancy standby system, which solves the hidden trouble that single-point failure can easily occur in a CPCI system controller.

The invention provides an intelligent automobile information flow safety redundancy control system based on a chassis domain controller. The chassis domain controller realizes interaction with external information flow through a redundancy signal channel, and the redundancy signal channel comprises a transverse cooperative control unit, a longitudinal cooperative control unit, a safety redundancy unit and diagnosis/fault redundancy, wherein the transverse cooperative control unit, the longitudinal cooperative control unit and the safety redundancy unit are directly linked to a main control chip of a core operation unit. According to the system, information flow on a chassis is re-integrated based on the concept of chassis dynamics domain control, meanwhile, a redundant interaction interface of chassis information and intelligent driving related information is re-defined for a future intelligent automobile framework, and through a high-reliability domain controller and a redundant safety information flow channel, and by combining encryption and verification technologies, redundant control of each execution mechanism of the chassis is realized, hierarchical management and signal verification of an automatic driving function module, redundant control of a whole vehicle signal and whole vehicle information flow verification work are realized, and the information safety of the whole vehicle is ensured.

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.

The invention discloses a control method of a micro-grid bidirectional DC/DC (Direct Current/Direct Current) change drooping coefficient. The method comprises the following steps: detecting direct current bus voltage Udc and direct current bus current Idc on an output side; inputting the Udc, the Idc, a direct current bus voltage set value Udc<*> and a drooping coefficient initial value k0 into a direct current bus drooping controller; comparing the direct current bus voltage Udc with the direct current bus voltage set value Udc<*> to determine a DC/DC working region and regulating the drooping coefficient of each region; calculating a DC/DC output voltage reference value Udc-ref; transmitting a difference value of the DC/DC output voltage reference value Udc-ref and the direct current bus voltage Udc into a direct current voltage PI (Proportional Integral) regulator, and outputting a given value Idc<*> of a current ring; comparing the Idc<*> with the direct current bus current Idc, inputting the difference value into the direct current PI regulator, and taking the output as a given value of PWM (Pulse Width Modulation); generating PWM wave for controlling switch-on and switch-off of an IGBT (Insulated Gate Bipolar Transistor) to realize constant voltage control of DC/DC. The problem that the DC/DC output power cannot be regulated on line in the drooping control is effectively solved, the dynamic performance and the steady state performance of a direct current converging system are improved, and loop current between energy storage units is reduced.

The invention relates to a photovoltaic system suitable for high-voltage direct-current transmission. Electric energy produced by a photovoltaic array is output through a direct current converting circuit controlled by a tracking controller to serve as the energy source of a power unit, the system controller controls conduction and shutoff of switching elements in power units according to collected related data, the voltage stability of a capacitor is maintained, and a high-voltage and direct current formed by overlaying the voltage of various input power unit capacitors is obtained at the output end. A modularization power unit is adopted, the high-voltage direct current is output through the manner that the power units are mutually overlaid, long distance electricity transmission is carried out, redundancy control can be achieved, and system maintenance is convenient. A control strategy is simple and reliable, floor space is small, and transmission power is large.

The invention discloses a steam turbine governing valve redundancy control system and a control method thereof. Redundant distributed control units and redundant valve positioner modules are combined to control steam turbine governing valves. The distributed control units are arranged in pairs, the current valve position instruction signals of the steam turbine governing valves are calculated in real time to be sent to the valve positioner modules. The valve positioner modules are arranged in pairs, feedback signals of two different steam turbine governing valves are collected at the same time, the valve position instruction signals sent by the distributed control units are combined with the feedback signals, the instruction signals of a current governing valve servo valve are calculated and output to drive two coils of hydraulic servo-motor servo valves corresponding to the two governing valves, closed loop control over the steam turbine governing valves is achieved, the two coils of the hydraulic servo-motor servo valves corresponding to each steam turbine governing valve are respectively controlled by adopting the two valve positioner modules which are arranged in pairs, safety of valve control of a steam turbine is improved greatly, and on-line non-stop and interference-free renewing of the valve positioner modules can be achieved.

The invention provides a vehicle control unit VCU cabinet. The VCU cabinet comprises at least one micro processor unit MPU and at least one remote input and output module RIOM; the MPU comprises at least one MPU main control board and at least one MPU network board; the RIOM comprises at least one RIOM main control board and at least one RIOM network board; and the RIOM network board is configuredto perform network communication with one of the MPU main control board and the RIOM main control board, so that one of the MPU main control board and the RIOM main control board performs full vehicle control on the vehicle. The VCU cabinet provided by the invention can realize the redundant control of the MPU and the RIOM, thereby ensuring the continuous and effective control of the VCU cabinetto the vehicle, and thus the normal operation of the vehicle is ensured.

The invention discloses a vehicle queue longitudinal redundancy control system based on information fusion technology, which comprises a queue longitudinal redundancy controller, a V2X communication module for transmitting the acquired motion information of surrounding vehicles and a host vehicle to the queue longitudinal redundancy controller, an environment sensing module for acquiring vehicle surrounding environment information by using an onboard sensor and transmitting the information to the queue longitudinal redundancy controller, and a motion execution module for receiving the vehicleenvironment information and the driving parameter information sent by the queue longitudinal redundancy controller. The vehicle queue longitudinal redundancy control system based on information fusiontechnology combines the V2X communication system and the onboard sensor environment awareness system for multi-source information fusion, and uses the queue longitudinal redundancy controller to realize switching of different control strategies to ensure stable and safe driving of a vehicle queue.

The invention discloses a novel modularized photovoltaic grid-connected system based on a three-port power channel and a control method. The system comprises a front-stage three-port isolation type DC/DC photovoltaic converter, a rear-stage three-phase half-bridge cascade MMC and a combination thereof. The front-stage three-port DC/DC converter adopts a three-winding high-frequency transformer for isolation, an input port is connected with a photovoltaic array, and two output ports are respectively connected to two sub-modules of upper and lower bridge arms of each phase unit of the MMC. The half-bridge cascade structure of the MMC enables the output voltage to be the superposition of the output voltage of each sub-module, and the output current harmonic wave is greatly reduced through carrier phase-shifting modulation, so that the MMC can be directly connected with a medium-voltage AC power grid and a medium-voltage DC power grid. According to the topology, through power decoupling control, the capacity of a power decoupling capacitor can be reduced by dozens of times, and the size of a system is greatly reduced. In addition, the photovoltaic power among the topological phase units is balanced in the form of direct-current circulating current through a direct-current link, so that the problem of mismatch of the photovoltaic power is well solved.

The invention relates to a dual-motor elevator traction system, which comprises two traction machines which are arranged on the top and the bottom of a well, an upper traction wheel, a lower traction wheel, a hoist rope, a car, a counterpoise, a guide wheel A, a diversion sheave A, a diversion sheave B, a car rope hitch plate and a detection control system for detecting the operation of the elevator, wherein the two traction machines are connected with the counterpoise by the hoist rope and the guide wheel A; the other end of the counterpoise is connected with the lower traction wheel; the counterpoise is arranged on the rear side of the car; one end above the car is fixed on the car hitch plate, and connected with the upper traction wheel by the diversion sheave A and the diversion sheave B, and the lower end of the car is connected with the lower traction wheel to integrally form a ring-shaped structure. The dual-motor elevator traction structure disclosed by the invention improves the reliability of elevator operation.

The invention provides an automatic driving steering system, method and device, electronic equipment and a storage medium. The system comprises a main controller and a main steering actuator which are connected through a main CAN line, and a redundant controller and a redundant steering actuator which are connected through a redundant CAN line; the main controller is connected with a redundant CAN line; when the main controller, the main steering actuator, the main CAN line, the redundant controller, the redundant steering actuator and the redundant CAN line do not meet the operation conditions respectively, the main controller and the redundant controller conduct steering driving on the intelligent vehicle according to the current execution mode and the steering control instruction; the execution modes of the main steering actuator and the redundant steering actuator are configured by the main controller and the redundant controller according to a preset execution state strategy, redundant control over vehicle steering can be achieved according to the interaction relation among a CAN line framework, the actuators and the controllers, no matter what equipment breaks down, the system takes over the control, and the driving safety is ensured.

The invention aims to solve the problems that the traditional control method of selecting and switching operation work modes of the billet casting machine has no standby control method to be replaced and is difficult to operate, and provides a redundancy control method for selecting and switch-interlocking work modes of a billet casting machine. In the method of the invention, on the basis of the traditional selection and switching method of the work modes of the billet casting machine, without adding any hardware, the control input of the selection and switching of work modes is only increased in a monitoring human-computer interface in the programming manner, and the selection and switching (soft switch) of work modes on the monitoring human-computer interface is realized. The redundancy control method for selecting and switch-interlocking work modes of billet casting machine coexists with the selection and switching (hard switching) of work modes of a universal change-over switch on an operation station. The invention is not only convenient for operators to operate, but also improves the operation safety and the dependability of the billet casting machine.

The invention provides a two-wire EtherCAT protocol conversion method and device supporting link redundancy. The method comprises the steps of acquiring a data connection signal or a data effective signal of a physical layer of a communication link; analyzing according to the data connection signal or data effective signal of the physical layer so as to obtain communication states of the communication link, wherein the communication states comprise a communication normal state and a communication fault state; and determining to keep the communication link communicating or switch the communication link to a corresponding redundant link to communicate according to the communication states. According to the two-wire EtherCAT protocol conversion method and device supporting link redundancy, the data connection signal or data effective signal can be collected in real time, determination, analysis and processing are performed according to the data connection signal or the data effective signal so as to determine a switching time, so that when the communication link is switched to the redundant link, communication reliability and security are improved.

The purpose of the invention is to provide a redundantly controlled automobile electric vacuum pump system. An automobile electronic control unit is arranged for monitoring the driving state of an automobile and the state of a vacuum booster, a pump electronic control unit starts an electric vacuum pump for vacuum pumping once the braking is insufficient or the vacuum is insufficient according tothe monitoring state of the automobile electronic control unit, the electric vacuum pump is connected with a vacuum tank, the vacuum tank is connected with the vacuum booster, so that the required degree of vacuum by the braking is offered, the redundant control is achieved, and an automobile braking system can be well ensured to work effectively.

The invention discloses a redundancy clock synchronization device of a hydroturbine governing system. The hydroturbine governing system is provided with two sets of PCCs, the PCCs are connected with a time server to obtain a direct-current B code signal used for clock synchronization, the time server is in communication with a satellite through an antenna, and the timer server outputs a direct-current B code clock synchronization signal and outputs a network clock synchronization signal to the two sets of the PCCs. The device and the method have the advantages that on the premise that the number of existing hardware system is not increased or the modification of the existing hardware system is small, redundancy control of the governing system is achieved, the cost of a hydropower station is reduced, network clock synchronization in the redundancy control process is achieved, and the PCC is easy to configure.

The invention relates to the technical field of transformers, and discloses a ZH-BFK type modular transformer air cooling intelligent control cabinet. The top of a control cabinet main body is integrally provided with a cabinet top, the front surface of the control cabinet main body is hinged with a cabinet door, and the middle position of the cabinet door is provided with a visual window; an aircooling unit intelligent control module and a fixing plate are installed in the control cabinet body from top to bottom, a base is integrally installed at the bottom of the control cabinet body, a cooler intelligent control module is installed in the fixing plate, and heat dissipation holes are formed in one side of the base. And an illuminating lamp is slidably mounted in front of the fixed platein the control cabinet main body. The PLC can realize parallel control of all the ZHFZK modules through a hardware logic control feedback mode, and operation of other modules is not affected when a certain module fails. And meanwhile, the PLC also adopts a software communication mode to realize redundancy control on each module, so that the reliability is greatly improved.