30results about How to "Comprehensive excellent" patented technology

The invention discloses an openstack encrypted link management method and system. The method of the present invention first layers the intermediate nodes between the network nodes and the target site according to the number of tunnels on the encrypted link; then the node sends a request to obtain the network delay between itself and all adjacent nodes, and obtains the The number of encrypted tunnels; and then take the network node as the starting point and the target site as the end point, and use the A star algorithm to select the entire encrypted link The connectable intermediate node with the smallest distance above is used as the intermediate node for the encrypted link. The invention can automatically select the encrypted link composed of the optimal intermediate nodes in terms of network delay and load balancing, and improves the success rate and availability of the encrypted link establishment.

The invention discloses a variable tap-length RC equivalent circuit model and a realization method based on the AIC. According to the variable tap-length RC equivalent circuit model, an RC model is selected as a basic model, complexity and accuracy of the basic model are fully weighted in different SOCs on the basis of the AIC, the optimal RC tap length of each SOC is determined, the variable tap-length RC model is realized through control over toggle switches, the dynamic and static characteristics of a power battery are accurately simulated within all the working ranges through a model structure which is as simple as possible, engineering realization is easy, accuracy is high, and comprehensive optimization between model complexity and accuracy is achieved. According to the variable tap-length RC equivalent circuit model and the realization method based on the AIC, the dynamic and static characteristics of the power battery can be well simulated, and the variable tap-length RC equivalent circuit model and the realization method are applicable to the working condition of constant-current charging and discharging, the working condition of pulse charging and discharging and the working condition of UDDS circulation of the power battery.

The present invention proposes a space debris net capture system with six traction devices, which adopts the method of first-stage launch and mass block synchronous launch, and the concentric circle rope net is folded and stored, including: launch subsystem, consisting of a launcher, a net cabin, and a buffer device It is composed of a tether tension control device; the flying net subsystem is composed of a rope net and a mass block, wherein the transmitter is used to push the mass block to move according to the preset launch angle when approaching the predetermined distance of the target and drive the rope net from the net cabin. Pull out while unfolding and reach the fully unfolded state, so as to net the target after reaching the target position. The quality block is used to pull the rope net out and tighten the net mouth to complete the target capture. The number of mass blocks is at least three and passed through The optimization analysis uses six mass blocks, the tether tension control device is connected to the flying net subsystem and the target is connected to the target through the rope net to pull the captured target off the track. The rope net is encapsulated in the net cabin in a concentric circle packaging method And used to create enough coverage space to completely surround the target.

The invention discloses a method for battery SOC estimation based on small model error criterion expanding Kalman filter. The method comprises the steps of first establishing a variable-order RC model based on an AIC criterion and laying a good foundation for SOC precise estimation; obtaining data such as battery terminal voltage, current and corresponding model errors in an off-line mode under different working conditions and establishing a model error prediction model based on a fuzzy neural network; predicting model errors in an on-line mode based on the neural network in filtering, and performing measurement and updating on state estimation only when predicted errors are small so that the problem of filtering divergence caused by the model errors and system noise statistical characteristic uncertainty and the problem of SOC estimation fluctuation caused by battery terminal voltage jump can be solved. The method can effectively eliminate filtering estimation errors caused by the model errors and can be suitable for the dynamic process of a battery under various complex working conditions.

The invention discloses a thermal power plant environment economic dispatching method based on a multi-target differential evolution algorithm.The method comprises the following steps that a thermal power plant economic dispatching model with the lowest electricity generation cost and smallest pollutant discharge quantity as targets and with generator capacity and power balance as constraint conditions is built; the multi-target differential evolution algorithm is utilized for carrying out optimization solving on the model, an optimal Pareto solution set is obtained, the multi-target differential evolution algorithm adopts difference mutation operators for searching, mutation operators are selected based on the accumulation performance and using frequency of the operators of the latest several times of variation, and solution set convergence and distribution uniformity are ensured by means of non-dominated ranking, domination frequency and hypervolume contribution and the like; finally, a decision is made through the fuzzy set theory, and a compromise solution is selected from the Pareto solution set to be used as a final regulation scheme.The thermal power plant environment economic dispatching method has the advantages that precision is high, Pareto leading edge solution set distribution is uniform and convergence speed is high, and engineering realization is easy.

An embodiment of the invention provides a prevention strategy for serious kinematic performance degradation of a spatial manipulator. The prevention strategy comprises the following steps: analyzing unilateral kinematic performance indexes, impacted by a locking angle of a fault joint, of the spatial manipulator, and selecting a plurality of indexes to represent comprehensive kinematic performanceof the spatial manipulator; through global processing of the selected local indexes, on the basis of constructing a corresponding global fluctuation index, constructing a comprehensive kinematic performance index of the spatial manipulator by an entropy evaluation method; based on the unilateral kinematic performance indexes or the comprehensive kinematic performance index, solving manual limitations of all joints of the spatial manipulator on the basis of the Newton-Raphson method; and preventing serious kinematic performance degradation of the spatial manipulator by manually limiting a rotation range of each joint of the spatial manipulator in an ordinary state. According to the technical solution provided by the embodiment of the invention, the kinematic performance of the spatial manipulator can still meet the demands of an on-orbit operation task after locking failures of the joints.

The invention relates to a frequency management method for stable postures of a hypersonic aircraft. The method sequentially comprises the steps that (1), information of various frequencies is collected; (2) when a rigid motion transmission band is larger than first-order elastic vibration frequency by more than 10 times, and an elasticity amplitude stabilizing method is adopted; (3), a rate gyroscope is led in to a place where the vibration mode slope is zero; (4) when shaking zero frequency is larger than pole frequency, shaking stability is improved through feedback of an accelerometer or additional arrangement of an anti-shaking board; (5), a transmission band of a steering engine is 5-10 times of the rigid motion transmission band; (6), an inertia unit transmission band is 10-20 times of rigid motion bandwidth; (7), the structural stiffness of an executing mechanism and a sensitive mechanism is kept to be more than 5 times of a single-engine bandwidth; (8), main frequency of external disturbance is prevented from being coupled with inherent frequency of a structural part; (9), ground tests of various frequency characteristics are carried out, and the stable postures of the hypersonic aircraft are ensured. According to the frequency management method for the stable postures of the hypersonic aircraft, repeated schemes are avoided, development schedule is accelerated, and system interfaces are made to be clear and comprehensively optimum.

The invention belongs to the research and application technical field of status monitoring and fault diagnosis of power transformer equipment in the electric power industry, and in particular relates to a terminal status monitoring method for large data distributed systems of power grids. The invention obtains the current connected power transmission and transformation equipment through the power monitoring system The status monitoring master station platform monitors information such as the IP, MAC address, and communication port of the terminal host, and detects whether the characteristics of the monitored terminal host match the established rule base, and can also provide network security, data link and data channel availability checks service, the present invention can effectively avoid network security incidents that attack the power monitoring system through distributed monitoring terminal hosts, and improve the safe and stable operation level of the system; it creatively realizes the monitoring of terminal host status based on IP address, MAC address, and communication port. The simple method overcomes the passive situation of manual inspection and monitoring of terminal hosts with cumbersome procedures, and has a large-scale engineering application value.

The invention discloses a multi-objective power generation plan decomposition and coordination calculation method for a DC cross-region interconnected power grid. First, a cross-region interconnected large power grid with engineering constraints of DC operation is constructed with the minimum power generation cost, minimum carbon emission and minimum pollutant emission as the goals. Then, the above multi-objective optimization model is transformed into a series of centralized single-objective optimization sub-problems with different preferences by using the normal boundary intersection method; The power grid decomposition coordination model of the sending end and the receiving end of the multiplier method realizes the distributed solution of the multi-objective day-ahead generation and transmission plan. The method can realize the distributed solution of the multi-objective day-ahead generation and transmission plan of the DC cross-regional interconnected large power grid, which can not only take into account multiple dispatching objectives, but also be suitable for the dispatching mode of unified dispatching and hierarchical management in my country.

A model prediction control method of spacecraft attitude avoidance by taking the consideration of flywheel dynamic characteristics comprises the following steps of: establishing a prediction model based on attitude dynamics of the spacecraft and dynamics of flywheels; establishing a constraint mathematic model according to the dynamic characteristics of the flywheels and an instrument angle of sight; designing a performance index function facing different task demands, and converting a control problem to a problem of solving an extreme value of a target function in equality and inequality constraint conditions; and finally, rapidly solving the problem based on the optimization method of real-time iteration. The method can process the attribute avoidance problem of the spacecraft in the execution mechanism constraint condition, can reach the comprehensive optimization of energy and time of the design of the target function, can perform processing through real-time iteration and hot start methods and can reduce the computing amount of solving the optimization problem.

The invention discloses a microgrid system capacity optimization configuration method based on a fan-shaped radar graph model. Firstly, the load loss rate, annualized cost, renewable energy generation loss rate and energy surplus rate are respectively selected as the power supply stability of the microgrid system. , economy, new energy consumption, and energy utilization, establish a fan-shaped radar map model, and set the area of ​​the fan-shaped radar map as the objective function; then take the maximum area of ​​the fan-shaped radar map as the goal and obey the constraints Conditions, establish an optimized mathematical model for the capacity allocation of the microgrid system; finally, use the genetic algorithm based on the load tracking management strategy to solve the optimal allocation scheme for the capacity of the microgrid system, and verify the correctness and reliability of the optimization method through practical examples. Feasibility, the optimized configuration scheme can meet the stable operation target of the micro-grid system composed of various new energy modules and energy storage devices, and is conducive to the economic operation of the micro-grid system itself and the efficient utilization of renewable energy.

The present invention relates to the technical field of state monitoring and fault diagnosis of power equipment, in particular to a method for cluster analysis of transformer state monitoring data; The analysis method of dissolved gas in oil with the same load rate) overcomes the key problem of troubleshooting latent faults of equipment and improves the security and stability of the power grid; successfully developed an inspection system covering data extraction, cleaning and fusion of dissolved gas in oil, and cluster analysis , effectively avoiding the passive situation of frequent transformer status monitoring false alarms and missing alarms, and achieving the comprehensive optimization of risk, efficiency and cost in one fell swoop.

The present invention relates to a method and system for three-dimensional reconstruction and expansion of highways based on limiting factors. The limiting factors are taken as important control factors in route design, and the design process of the three-dimensional reconstruction and expansion mode is refined, and designers A variety of horizontal, vertical and horizontal schemes can be obtained according to the established design steps, and then a variety of comprehensive and better design schemes can be screened out according to the design principles of the horizontal, vertical and horizontal schemes and the relevant provisions of the design specifications. The design idea of ​​this alignment method is clear, and the requirements for the design experience of the designer are relatively low. During the design process, no comprehensive and better design scheme will be missed. The scheme obtained after multiple screenings tends to be close to the best scheme of the project. , which is conducive to the design of a comprehensive horizontal and vertical horizontal scheme with low engineering cost, small demolition area, and small construction impact.