30results about How to "Comprehensive excellent" patented technology

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 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 provides a six-traction device space debris net capture system which adopts level-1 launch and mass blocks synchronization launch and concentric circles rope net folding and receiving. The system comprises a launch subsystem which is composed of a launcher, a net hold, a cushioning device and a tether tension control device; a fly net subsystem which is composed of a rope net and mass blocks; the launcher is used for pushing the mass blocks at a predetermined distance from a target at a predetermined angle and to drive the rope net be pulled from the center of the net hold while unfolding to a fully unfolded state to capture the target after reaching the target location; the mass blocks are used for dragging the rope net so that the rope net is pulled out and unfolded and the net opening is tightened up to complete capture of the target; the number of the mass blocks is at least three and six mass blocks are adopted through optimized analysis; the tether tension control device is connected with the fly net subsystem and with the target through the rope net to pull the captured target off the track; the rope net is encapsulated in the net hold in a concentric circles package and is used to form sufficient coverage to completely surround the target.

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 present invention relates to a heating load estimation method of a residential electric heating film. The method comprises the following steps: step 1, using heating power required by each household in a residential area as a target function to establish a heating load estimation formula of a residential electric heating film: P=SK(t-tw), wherein in the above expression, P is the required heating power, S is an equivalent total area of a heat-dissipating wall based on a certain occupancy rate, K is an equivalent heat transfer coefficient, t is a calculated indoor temperature determined based on the usage habits of each household in the residential area and tw is a calculated outdoor temperature; and step 2, determining parameter values of tw, t, S and K in step 1 and putting the parameter values into the formula in step 1 to obtain the heating load value required by each household in the residential area by solving the formula. The estimation method enables each household to configure a reasonable heating load capacity according to the specific situation of the household to achieve comprehensive optimization on economic and heating effects.

The invention discloses a control method for a four-holding water tank system and belongs to the field of automatic control. A four-holding water tank is a typical hybrid system with constraint, and the mutation of the water tank structure and a switch of the a valve are discrete events. Continuous process and discrete events are integrated in a uniform framework through a modeling method for a mixed logic dynamic model, and the interaction between the discrete events and continuous dynamic process is described precisely; model predictive control for a four-holding hybrid system based on transverse 8 norm is designed, the field device control through MATLAB is finished through OPC communication, and the effect of a predictive control strategy in the MATLAB on an actual hybrid system is realized. The control method for the four-holding water tank system uses the modeling and control methods of hybrid system theory, and all the subsection models of the system are integrated to precisely describe the interaction between a model switch event and the continuous dynamic process; the predictive control based on the hybrid system model processes the control problem of the system with a lot of constraint conditions, and the continuous and discrete control for the system is optimal.

The invention provides a triangular comprehensive evaluation-based optimal configuration method of a novel energy supply system. The method comprises the following steps: firstly, selecting the load power loss rate, the load heat loss rate, the system annual cost and the energy surplus rate as evaluation indexes in three aspects of the power and heat supply stability, the economy and the new energy utilization condition of the novel energy supply system, building a triangular comprehensive evaluation model, and setting the area of the triangular comprehensive evaluation model as a target function of the optimal configuration method; then building an optimal mathematical model of the novel energy supply system according to the constraint conditions by taking the maximum area of the triangular comprehensive evaluation model as a target; and finally, using a hierarchical iteration algorithm to solve an optimal configuration scheme of the novel energy supply system, and verifying the correctness and feasibility of the optimal method through actual calculation examples. The optimal configuration scheme can meet the rigid requirements of power and heat in remote regions, and is beneficial to the economic operation of the energy supply system and the efficient utilization of renewable energy sources.

The invention discloses an openstack encryption link management method and system. The method comprises the following steps: firstly, layering intermediate nodes between a network node and a target site according to the number of tunnels on an encrypted link; then the node sending a request to obtain network delay between the node and all adjacent nodes, and obtaining the number of encrypted tunnels established on an intermediate node; and taking the network node as a starting point, taking the target station as an end point, integrating network delay and the number of encrypted tunnels established on the intermediate node as the distance between adjacent nodes, and selecting a connectable intermediate node which enables the distance to be minimum on the whole encrypted link as the intermediate node used by the encrypted link by applying an A star algorithm. According to the method, the encryption link composed of the intermediate nodes which are comprehensively optimal in the aspects of network delay and load balancing can be automatically selected, and the success rate and availability of establishment of the encryption link are improved.

The invention discloses a micro-grid system capacity optimal configuration method based on a fan-shaped radar map model. The method comprises the following steps: firstly, selecting a load power lossrate, an annual cost, a renewable energy power generation loss rate and an energy excess rate as evaluation indexes in four aspects of microgrid system power supply stability, economy, a new energy consumption condition and an energy utilization rate, establishing a fan-shaped radar map model, and setting the area of a fan-shaped radar map as an objective function; taking the maximum area of the fan-shaped radar map as a target, obeying constraint conditions, and establishing an optimization mathematical model of micro-grid system capacity configuration; finally, a genetic algorithm based on aload tracking management strategy is adopted; solving an optimal configuration scheme of the micro-grid system capacity; the correctness and feasibility of the optimization method are verified through actual examples, the optimization configuration scheme can meet the stable operation target of the microgrid system composed of various new energy modules and energy storage devices, and economic operation of the microgrid system and efficient utilization of renewable energy sources are facilitated.

The invention relates to the technical field of microelectronic heat dissipation, and discloses a double-sided efficient heat dissipation airtight packaging structure and a preparation method thereof. The packaging structure comprises a heat dissipation micro-channel, a packaging substrate, a first chip, a second chip, an enclosure frame, cover plates, a liquid cooling connector and an electric connector; the heat dissipation micro-channel and the enclosure frame are welded on the packaging substrate; the first chip is welded on the heat dissipation micro-channel, the second chip is welded on the packaging substrate, and the first chip and the second chip are interconnected with the packaging substrate; the cover plates are respectively welded on the enclosure frame and the packaging substrate; and the liquid cooling connector and the electric connector are welded at the bottom of the packaging substrate. According to the invention, efficient heat dissipation of the high-power chip and effective heat dissipation of the medium-and-small-power chip can be realized, so that heat in the packaging structure is uniformly distributed.

The invention relates to the technical field of microelectronic heat dissipation, and particularly discloses a three-dimensional integrated efficient heat dissipation packaging structure and a preparation method thereof. The packaging structure comprises a first packaging substrate, a second packaging substrate, a heat dissipation micro-channel, a first chip, a second chip, a cover plate, an enclosure frame, a liquid cooling connector and an electric connector; the heat dissipation micro-channel and the enclosure frame are welded on the first packaging substrate; the first chip is welded on the heat dissipation micro-channel and is interconnected with a surface bonding pad of the first packaging substrate; the second chip is welded on the second packaging substrate and is interconnected with a surface bonding pad of the second packaging substrate; the cover plate is welded on the enclosure frame for sealing; and the liquid cooling connector and the electric connector are welded between the first packaging substrate and the second packaging substrate, and the liquid cooling connector and the electric connector are also welded on the second packaging substrate. According to the invention, the electromagnetic compatibility requirement of microwave signals can be met while high-heat-flux heat dissipation is realized.