7results about How to "Guaranteed State Consistency" patented technology

The invention discloses a distributed control method and system for a marine vehicle cluster based on an inverse optimization theory, relates to the technical field of marine vehicle control, and aims to overcome the defects of an existing state feedback control algorithm. The method is technically characterized by comprising the following steps: aiming at a marine vehicle system working in a water surface environment, constructing a multi-marine vehicle system cluster dynamic model with uncertain modeling parameters; constructing a cluster state tracking error system based on navigation-following, and defining a global dynamic cost function including uncertain modeling parameters; designing a distributed collaborative optimization controller, and solving an optimal control quantity enabling the cost function to be optimal by using a global inverse optimization theory; and performing distributed control on the ocean vehicle cluster by using the optimal control quantity. According to the method, the state consistency of a plurality of follower marine vehicles and a leader marine vehicle and the optimality of a system global cost function under the condition of uncertain modeling parameters can be ensured.

The utility model discloses a point switch contact group dynamometer, and relates to the railway equipment signal detection technology field, the point switch contact group dynamometer comprises a dynamometer body and a contact assembly, one side of the dynamometer body is fixedly provided with a display screen and buttons, the other side of the dynamometer body is fixedly provided with a first baffle plate and a second baffle plate, the first probe assembly is composed of a first conduction piece, a second conduction piece, a first pressure diaphragm, a second pressure diaphragm and a supporting plate. The point switch contact group dynamometer disclosed by the utility model is provided with the supporting plate, so that the pressure of the first contact sheet and the pressure of the second contact sheet are conducted to the first conduction sheet and the second conduction sheet, and then the pressure conducted to the first pressure diaphragm and the pressure conducted to the second pressure diaphragm do not influence each other; meanwhile, a plurality of contact pieces can be tested, time and labor are saved, a large number of point switch contact sets can be conveniently tested, and the use efficiency of the dynamometer is improved.

The present invention relates to a measurement and calibration integrated marine fiber grating strain sensor system, which consists of a fiber grating strain sensor and a sensor calibration device. The two ends of the fiber grating are respectively fixedly connected to the fixed end of the sensor and the movable end of the sensor. The fixed end of the sensor is fixedly connected to a positioning plate through a fixed end welding base, and the movable end of the sensor is connected to the positioning plate through a movable end welding base. The movable end welding base can move forward and backward along the positioning plate, so that the distance between the two fixed points of the fiber grating is an effective strain length L; a high-precision differential screw is fixedly connected to the positioning plate through a screw mounting seat, and the screw mounting seat is connected to the movable end welding base through a return spring. The high-precision differential screw cooperates with the return spring to control the sliding of the movable end of the sensor in the forward and backward directions, and can accurately control the displacement ΔL of the sliding of the movable end of the sensor, thereby applying a standard strain amount ε=ΔL / L to the fiber grating strain sensor, thereby realizing the installation or calibration of the fiber grating strain sensor.

The embodiment of the invention relates to a bullet screen processing method, a bullet screen processing device, equipment and a medium, and the method comprises the steps: when a target triggering event used for changing the current state of a target bullet screen is monitored, performing bullet screen processing; determining a target state of the target bullet screen based on the target trigger event, the current state of the target bullet screen and a preset state change rule through a preset state machine; based on the target state of the target bullet screen, respectively updating the current states of the target bullet screens stored in a plurality of target databases; wherein the target database is a database in which the target bullet screen is stored, and different target databases have different purposes. According to the embodiment of the invention, the state consistency of the same bullet screen in a plurality of databases can be effectively guaranteed.

The invention provides an FPGA (Field Programmable Gate Array)-based data plane state programmable system and a switch. The FPGA-based data plane state programmable system comprises a multi-stage matching action table assembly line, the assembly line comprises a plurality of ordered matching action table modules which are used for realizing different data plane processing and forwarding algorithms according to read configuration instructions in combination with a flow state matching table and a condition branch matching table; the matching action table module comprises a key value extraction module used for forming a to-be-matched key value; the stream state query module is used for obtaining stream address information through matching of the key value to be matched and reading corresponding stream state information; the packet header vector transmitting queue is used for dynamically scheduling packet header vector out-of-order transmission according to a flow state address and a dependency relationship by taking the flow state address in the flow state information as an identifier; the action module is used for determining a data plane processing and forwarding algorithm for processing according to the configuration instruction and updating flow state information and table state information; and the packet header vector reordering cache module is used for storing the packet header vectors which are executed completely and submitting the out-of-order packet header vectors in sequence.

This invention relates to the field of auxiliary technology for road compaction testing, specifically a portable sampling and testing device for road compaction testing. The device includes a mounting frame with a sampling mechanism on the frame and an operating mechanism on the sampling mechanism. The operating mechanism includes a support frame and support rods. Symmetrically arranged lifting rods are fixedly connected to the support rods. A first strong magnet is fixedly connected to the top of each lifting rod. A push plate is fixedly connected to the bottom of each lifting rod. A scraper is fixedly connected to the bottom of the push plate. A first spring is fixedly connected to the bottom of each support rod at a position corresponding to the lifting rod. The beneficial effects of this invention are: before sampling, the scraper can rotate to remove surface soil and loose impurities from the sampling point, preventing surface soil from mixing into the core sample within the sampling ring, ensuring the purity and representativeness of the sample, eliminating interference from surface soil on density and moisture content testing, improving the accuracy of compaction test data, and ensuring the reliability of construction quality assessment.

The application belongs to the technical field of quantum secure communication, and discloses a key rotation method and system for a quantum secure network, which executes a key rotation process in a state machine driven manner on the premise of maintaining uninterrupted business services; specifically, while a current key is kept effective to process existing business, a next key is generated; a distributed lock mechanism is used to exclusively execute a key switching operation in a multi-node environment; the next key is atomically switched to a new current key, and the original current key state is updated to an old key, so as to realize seamless transition of business data encryption and decryption keys. Compared with the prior art, the application realizes uninterrupted business during the key rotation process, establishes an effective multi-node cooperation mechanism, introduces a transaction management mechanism, designs a perfect fault detection and automatic recovery mechanism, and builds a full life cycle security management system of codebooks and random number books to realize controllable full process from creation to archiving.