14results about How to "Achieve redundancy" patented technology

The invention discloses a vehicle steering control method, a vehicle steering system and a vehicle, the vehicle comprises a distributed driving system, and the vehicle steering control method comprises the steps that according to a steering wheel target steering angle and a steering wheel actual steering angle, a steering wheel steering angle error is determined; determining a target differential torque of a steering wheel according to the steering wheel angle error; and according to the target differential torque of the steering wheel, a driving motor corresponding to the steering wheel in the distributed driving system is controlled, so that the target differential torque of the steering wheel is distributed to the steering wheel. According to the method and the system, the problem of inaccurate steering possibly caused by a fault of a vehicle steering system can be solved, additional hardware does not need to be added, the manufacturing cost is low, the vehicle structure and the control design are simple, and the occupied space is saved.

The utility model discloses an emergency defoaming device for a nuclear power plant. The emergency defoaming device comprises an execution system, a control system and a power supply system, according to the emergency defoaming device for the nuclear power plant, the main flow pipeline, the branch flow pipeline and the spraying assembly are arranged, so that one solvent tank can be used for filling a plurality of defoaming pools at the same time. Meanwhile, the video monitoring module is utilized, the flow and concentration of defoaming spraying can be automatically adjusted according to the foam amount collected by the video monitoring module, high efficiency is achieved, the operation cost is reduced, the function of intelligent decision control can be achieved through the arrangement of the data processing module, and the purpose of unmanned defoaming is achieved. And a remote control module and a wireless transmission module are also arranged, so that the functions of real-time monitoring and remote operation are realized, and the cost and risk of manual intervention are reduced. In addition, a generator, a photovoltaic panel and an energy storage device are further arranged, traditional mains supply is combined with new energy power supply of wind energy and solar energy, and redundancy and reliability of power supply are achieved.

This application provides a method and apparatus for determining the air supply strategy of a thermal management combined power unit, belonging to the field of aviation electromechanical technology. The method provided includes: acquiring the operating state parameters of the thermal management combined power unit; inputting the operating state parameters into a pre-trained prediction model to determine the air supply control parameters; training the prediction model using training samples, wherein the training process of the prediction model is based on exhaust temperature constraints, compressor surge margin constraints, fuel temperature constraints, and air supply flow constraints to construct a target loss function; controlling the distribution of cooling airflow in the cabin air supply circuit according to the cooling turbine outlet split ratio, controlling the distribution of fuel in each fuel branch according to the first fuel branch split ratio, the second fuel branch split ratio, and the third fuel branch split ratio, and controlling the air supply temperature entering the cabin according to the cabin air supply temperature. The method and apparatus provided in this application can solve the air supply control problem under multiple constraint coupling.

This application relates to the field of electromagnetic propulsion technology, specifically disclosing a double-sided long stator linear drive system, including multiple subsystems and a main controller. Each subsystem includes an equal number of linear motor stator segments, six-phase switches, position detection devices, a common AC bus for the subsystem, and a subsystem control bus. The linear motor stator segments are connected to the common AC bus of the subsystem through corresponding six-phase switches, and then connected to the system common AC bus formed by the subsystem bus interfaces, which is connected to a six-phase converter composed of three-phase converters distributed in each subsystem. Each position detection device is connected to the system control bus through the subsystem control bus, and then to the main controller. The main controller controls the switching of each linear motor stator segment according to the installation order of the subsystems and the running position of the linear motor mover measured by the position detection devices. The subsystems can be randomly ordered and assembled without affecting the system operation, exhibiting good mobility.

This application provides a method and apparatus for determining the air supply strategy of a thermal management combined power unit, belonging to the field of aviation electromechanical technology. The method provided includes: acquiring the operating state parameters of the thermal management combined power unit; inputting the operating state parameters into a pre-trained prediction model to determine the air supply control parameters; training the prediction model using training samples, wherein the training process of the prediction model is based on exhaust temperature constraints, compressor surge margin constraints, fuel temperature constraints, and air supply flow constraints to construct a target loss function; controlling the distribution of cooling airflow in the cabin air supply circuit according to the cooling turbine outlet split ratio, controlling the distribution of fuel in each fuel branch according to the first fuel branch split ratio, the second fuel branch split ratio, and the third fuel branch split ratio, and controlling the air supply temperature entering the cabin according to the cabin air supply temperature. The method and apparatus provided in this application can solve the air supply control problem under multiple constraint coupling.

The invention discloses a control system of a safety controller, the safety controller and a subsea Christmas tree, and relates to the technical field of electronic information. The control system of the safety controller at least comprises a first control board card, a second control board card, a first CAN communication channel and a second CAN communication channel, information interaction is carried out between the first control board card and the second control board card through the first CAN communication channel and the second CAN communication channel; the first control board card and the second control board card have the same structure; the first control board card comprises a first control module, a second control module and a dual-channel isolation module; the first control module and the second control module are electrically connected through the dual-channel isolation module, and data comparison verification and information synchronization are carried out between the first control module and the second control module through the dual-channel isolation module. And a reliable control board card can be provided for underwater operation of the safety controller. And a redundant control board card is provided, so that the reliability of the system is improved.

The invention discloses a system and an implementation method based on load balancing and port aggregation, and belongs to the technical field of communication, and the system comprises a load balancer which is responsible for receiving a client request and distributing the request to a back-end server according to a certain algorithm; the link aggregation controller is used for managing data flows among the plurality of physical ports and realizing link redundancy and load sharing; and the back-end service layer is composed of a plurality of servers. Requests are distributed to a plurality of back-end servers through the load balancer, the continuity of the whole service is not affected even if a certain server breaks down, meanwhile, link redundancy is achieved through the link aggregation technology, the system can continue working through other links even if a certain physical link fails, and the service efficiency is improved. And the stability and the reliability of the system are greatly improved.

This application discloses a method, apparatus, device, storage medium, and product for adjusting a trie, relating to the field of data storage technology. The method for adjusting a trie includes: after the nodes of the trie are updated, obtaining the occurrence count of each node in the current trie; determining whether there is a node in the trie whose occurrence count is greater than a preset threshold; if there is a node whose occurrence count is greater than the preset threshold, constructing that node and at least one of its parent nodes as a shared node of the trie, and based on the shared node, merging the child nodes of that node to obtain a structurally adjusted trie. This application compresses frequently accessed nodes into shared nodes, realizing shared storage of characters rather than independent character storage, thereby improving the space utilization of the trie, reducing the redundancy of character storage in the trie, and improving the storage efficiency of the trie.

The invention relates to a drive control circuit and method for a steam turbine speed regulator. The drive control circuit comprises a direct-current power supply input unit and at least one drive branch. The direct-current power input unit comprises a live wire and a zero wire; the number of the driving branches is equal to that of the OPC electromagnetic valves, each driving branch comprises an intermediate relay K1 and a contactor KM1, one end of a coil of the intermediate relay K1 is electrically connected with the live wire, the other end of the coil of the intermediate relay K1 is electrically connected with the zero line, one end of a normally open contact of the intermediate relay K1 is electrically connected with the live wire, and the other end of the normally open contact of the intermediate relay K1 is electrically connected with the zero line. One end of a coil of the contactor KM1 is electrically connected with the other end of the normally open contact of the intermediate relay K1, and the other end of the coil of the contactor KM1 is electrically connected with the zero line. The contactor is driven by the intermediate relay, the intermediate relay K1 serves as a control stage, the coil power consumption is small, direct and safe driving can be achieved through a passive dry contact signal of a steam turbine speed regulator, and the problem that a large-current load impacts a precision controller is solved.

The invention discloses a fault-tolerant interleaving DC-DC converter and a control method, the fault-tolerant interleaving DC-DC converter comprises N + 1 phases of interleaving Buck converters, the N phase is a main power phase, and the 1 phase is a redundant power phase; the MOSFET matrix switch and the voltage input end of each phase Buck converter are respectively connected with the input bus through an MOSFET tube, and the voltage output end of each phase Buck converter is connected with the output bus; the first driving circuit is connected with the grid electrode of the MOSFET tube; the second driving circuit is connected with the driving end of the Buck converter; the fault detection circuit is used for monitoring the drain-source electrode voltage of a power MOSFET in each phase of Buck converter in real time and outputting a fault signal when an overcurrent or short circuit fault is detected; and the controller is connected with the first driving circuit, the second driving circuit and the fault detection circuit. The technical problems that an existing fault-tolerant scheme is low in switching speed, high in size cost and sudden in output ripple are solved.

The utility model relates to the technical field of vehicle brake-by-wire, and discloses a brake-by-wire system with double simulator isolating valves, which comprises a simulator unit. The simulator unit adopts a double-valve design and comprises a first simulator isolating valve and a second simulator isolating valve; the first simulator isolation valve and the second simulator isolation valve are arranged in parallel. The high opening pressure of the electromagnetic valve is guaranteed, the overflowing area of a loop is increased, the foot feeling of a driver is effectively improved, meanwhile, the reliability of the system is improved, and the service life is prolonged.

The invention discloses an aluminum alloy spot welding quality detection method. The method comprises the following steps that S1, magnetic field signals generated in the aluminum alloy spot welding process are collected through a magnetic induction sensor array; s2, performing amplification processing on the magnetic field signal through a signal amplification circuit to obtain a magnetic field amplification signal; s3, carrying out feature signal extraction on the magnetic field amplification signal through a principal component analysis method; and S4, the spot welding quality result of the aluminum alloy is obtained according to the characteristic signals. The method is used for solving the technical problems that a spot welding quality detection method in the prior art has high requirements on a detection surface and is not suitable for aluminum alloy resistance spot welding quality detection.

The invention provides a photoelectric inductor fusion type encoder, which comprises an encoder chip and an encoder coded disc, and is characterized in that the encoder chip comprises a packaging shell, a light source and a receiving wafer, and the light source and the receiving wafer are respectively arranged at two sides in the shell; a light-transmitting sheet for sealing a shell is arranged above the light source and the receiving wafer, an inductance coil which is made of a transparent conductive material and allows light to penetrate through is arranged on the inner side or the outer side of the light-transmitting sheet, and the inductance coil at least comprises a group of exciting coils and a group of receiving coils; the receiving wafer is electrically connected with the inductance coil to acquire an analog signal generated by the inductance coil; the encoder code disc is provided with an optical code channel of a photoelectric encoder, and the front side or the back side of the encoder code disc is provided with a transparent conductive film which forms a conductive rotor equivalent to that in an inductive encoder. The structure is optimized, and fusion of photoelectric detection and inductance detection functions of the encoder is realized.

The utility model provides a multi-power-source power supply isolation framework of a new energy vehicle and the new energy vehicle, the multi-power-source power supply isolation framework comprises a first power supply circuit and a second power supply circuit, and the first power supply circuit is connected to a vehicle power supply end; the second power supply circuit comprises a DC / DC converter, a second field effect transistor and a second driving chip, the DC / DC converter is connected to the vehicle power supply end through the second field effect transistor, and the second driving chip is connected with the grid electrode of the second field effect transistor. The technical problems that the DC / DC of most new energy vehicles uses a traditional fuse for line protection at present, the effect is poor, and the protection speed is low are solved.