10results about How to "Prevent inversion" patented technology

The utility model relates to the technical field of relays, in particular to a double-shaft-hole connecting mechanism for a relay, which comprises an armature, a push piece and a reed, two sides of the push piece are respectively provided with a double-rod positioning shaft which is detachably connected, and the armature and the reed are connected through the push piece. One side of the armature and one side of the reed which are close to each other are respectively provided with a connecting hole, the connecting holes are matched with the double-rod positioning shaft, the stable assembly is arranged, and the double-rod positioning shaft is connected with the connecting holes, so that the problem that deviation is easy to occur in the assembly process of a single shaft hole is solved, and the assembly efficiency is improved. Furthermore, through the meshing relation between the gear and the rack, the phenomenon of reverse rotation of the two-way threaded rod is avoided, the connection stability between the parts is further improved, the stress between the parts can be uniform, the problem of aggravation of abrasion is further avoided, and therefore the service life of the device is greatly prolonged.

The application discloses a power grid carbon emission flow dynamic tracking method based on a physical guided graph neural network, and belongs to the technical field of power system operation analysis and low-carbon dispatching, and comprises the following steps: collecting power grid data in real time and dynamically constructing a power grid topology graph structure; inputting the graph structure into a physical guided graph attention network model trained through a loss function containing physical constraints, wherein the model fuses the edge features of line power and impedance when calculating attention coefficients, so as to infer the carbon potential of all nodes in the network; based on the inferred carbon potential, using a breadth-first search algorithm to start from a load node, tracking and proportionally allocating in the reverse direction along the active power flow path, and determining the carbon emission contribution of the generator set. The application ensures the physical consistency and precision of carbon flow tracking under the condition of lacking real labels, and significantly improves the efficiency of large-scale power grid carbon flow analysis and the adaptability to topology changes.

This application provides a real-time hyperspectral local anomaly detection method and device based on multi-line, multi-band recursive updates. The method includes: acquiring new data blocks for a target scene in real time using a filter array spectral imaging system; updating the current global mean vector and the multi-line, multi-band correlation matrix used for background modeling for the target scene using a recursive update formula to obtain the updated global mean vector and the updated multi-line, multi-band correlation matrix; acquiring the local spatial neighborhood statistics of the new data blocks; and performing local anomaly detection on the new data blocks based on the local spatial neighborhood statistics to obtain the current anomaly detection result data for the target scene. This application can realize local anomaly detection for multi-line, multi-band hyperspectral data and can solve the problems of high computational cost, large storage requirements, and insufficient real-time performance of traditional global covariance matrix calculations in complex industrial backgrounds.

The application provides a low-orbit satellite NOMA-OTFS system power distribution joint signal detection method for user fairness, which encapsulates a signal detection process as a fitness function in power distribution optimization under a total transmission power constraint, realizes collaborative design of power distribution and signal detection through construction of a closed-loop optimization mechanism based on detection feedback, and solves the problems of mutual independence of power distribution and signal detection, difficulty in giving consideration to user fairness and system capacity, and high resource consumption of a detection process in the prior art. Through introduction of an optimization mechanism based on a detection result, power distribution can be directly adjusted according to actual detection performance, thereby effectively improving weak user communication quality, enhancing system fairness, reducing calculation complexity, and improving overall system transmission performance.

This invention discloses a piecewise adaptive Kalman track tracking method and apparatus based on residual classification, relating to the field of radar track tracking technology. Addressing the problems of poor adaptability to non-stationary measurement noise environments, parameter dependence on human experience, and complex FPGA implementation in existing track tracking methods, this invention proposes introducing a residual classification decision and piecewise adaptive noise adjustment mechanism into the Kalman filter recursive framework. First, a residual vector is calculated based on the predicted state and measurement data. Then, a classification decision is made using the residual vector, the predicted covariance, and the measurement noise covariance of the previous cycle, outputting the measurement quality level. Next, the measurement noise covariance is updated piecewise adaptively based on the measurement quality level. Finally, the filter gain is calculated based on the updated measurement noise covariance and the predicted covariance to complete the correction and update of the state and covariance.

The utility model relates to a system for preventing centrifugal supercharger impeller reverse rotation relates to supercharger field, including electric regulating valve, solenoid valve and manual ball valve, electric regulating valve input is connected with compressor output through pipeline, and electric regulating valve output is connected with compressor input through pipeline, and solenoden valve is connected with electric regulating valve in parallel through pipeline, and two manual ball valves are fixedly connected on solenoden valve input pipeline and output pipeline respectively to control natural gas flow direction electric regulating valve or solenoid valve, and the high pressure natural gas of compressor output flows through solenoid valve and flows to compressor input more quickly to balance the pressure difference before and after compressor and prevent impeller reverse rotation, the utility model has the advantages of realizing the quick balance to the supercharger entrance and exit pressure, avoiding impeller reverse rotation.

This invention discloses a method for forming nulls in the beam pattern of an array antenna in a specified direction, belonging to the field of electronic defense technology. The method includes the following steps: S1, calculating the weighting coefficients of the signal for each antenna element using an iterative solution method to obtain multiple weighting coefficients; S2, using the multiple weighting coefficients obtained in step S1 to weight the signal passing through multiple antenna elements, thereby forming the main beam of the antenna pattern in the specified direction and simultaneously forming nulls in the antenna beam pattern in other specified directions. Based on this invention, the method can effectively control the null depth in the null direction and achieve the beneficial effect of rapid and effective null beam modulation.

The application relates to a support structure for a cable tower closure section, which comprises: a bracket, comprising opposite first and second sides; the inner walls of two middle tower columns are respectively anchored with the brackets, and the second sides of the two brackets are parallel to each other; a vertical support structure, comprising vertical supports and bearing beams; the vertical supports are supported below the bottom formwork of the closure section; a horizontal support structure, comprising horizontal support members and wedge-shaped members; the horizontal support members comprise first plate bodies, second plate bodies and support rods; the support rods are respectively connected with the first plate bodies and the second plate bodies; the first plate bodies comprise first surfaces away from the support rods, and the second plate bodies comprise second surfaces away from the support rods; the first surfaces are parallel to the second sides of the brackets and abut against the second sides; the second surfaces are inclined relative to the first surfaces, and the wedge-shaped members are inserted between the second plate bodies and the brackets. The utility model can provide vertical and horizontal supports for the closure section and the middle tower columns, and has the advantages of simple structure and low cost.

The application relates to a material tower taper detection technical field, in particular to a material tower core mold taper part radius real-time determination structure and a winding forming system and method, a wire wheel is arranged on a pull rod, the top end of the pull rod is fixedly connected with an outer rod, the inner side of the outer rod is slidably connected with an inner rod, the inner rod can abut against the surface of the taper part upwards, the bottom end of the inner rod is a piston, a second spring is fixedly connected between the piston and the inner side of the outer rod, a potentiometer is fixedly connected on one side of the inner rod, a fixed block is fixedly connected on the inner side of the top end of the outer rod, the fixed block slides on the potentiometer, the real-time radius of the winding position of the taper part is obtained by obtaining the position of the fixed block on the potentiometer, the pull rod moves rightwards under the driving of a lead screw, the wire wheel moves rightwards synchronously, winding movement is realized, the outer rod bends to one side, so that the middle surface of the inner rod and the wire wheel is in the same plane, and the real-time radius of the winding position of the taper part is obtained by obtaining the position of the fixed block on the potentiometer.

This invention discloses a method for obtaining beamforming weight vectors in an integrated radar-communication system, within the field of array signal processing technology. The method comprises the following steps: S1: Establishing a receiver signal model for a uniform linear array antenna in the integrated radar-communication system; S2: Introducing orthogonal polynomials and the Gauss-Legendal numerical integration method to perform a low-complexity, fast fitting solution for the interference subspace; S3: Introducing the Schmitt orthogonalization method to recursively solve the orthogonal complement projection operator of the interference subspace and project it to obtain the beamforming weight vector; S4: Introducing an equivalent representation of the beamforming weight vector under a dual-phase shifter architecture to obtain the updated beamforming weight vector value under the dual-phase shifter architecture. This beamforming weight vector acquisition method solves the problems of high computational complexity, poor performance in low-quantization-bit hardware scenarios, and desired signal suppression under high signal-to-interference-plus-noise ratios in existing methods, achieving low-complexity and highly robust beamforming.