49 results about "Maximum efficiency" patented technology

The embodiment of the invention discloses a control method and device of a wireless power transmission system, equipment and a storage medium, the wireless power transmission system at least comprises a transmitting end and a receiving end which are in communication connection, and the method is applied to the receiving end. The method comprises the steps of obtaining an output voltage of a receiving end, an output voltage reference value and an estimated value of a first pulse density instruction of a transmitting end, wherein the output voltage is used for reflecting voltages at two ends of a to-be-powered load; determining an internal control quantity by using the output voltage, the output voltage reference value and a preset proportional-integral controller; determining a second pulse density instruction of the receiving end according to the estimated value and the internal control quantity; and sending the second pulse density instruction to the transmitting end. The power efficiency decoupling control method is realized through the method, the pulse density of the transmitting end can follow the receiving end, the interference of maximum efficiency tracking on voltage control is avoided, and the speed of the MEPT is improved.

The invention relates to a forklift truck (2) comprising a hydraulic system (10) and at least one hydraulically operated component (30), as well as a method for operating a hydraulic system (10) of the forklift truck (2). The hydraulic system (10) comprises a first hydraulic pump (11), a second hydraulic pump (12), and a hydraulic line system (15). The hydraulic line system (15) is designed and configured to connect the hydraulically operated component (30) selectively either exclusively to the first hydraulic pump (11), exclusively to the second hydraulic pump (12), or simultaneously to both the first hydraulic pump (11) and the second hydraulic pump (12). The first hydraulic pump (11) has a maximum efficiency at a first flow rate (102) and a first operating pressure (101). The second hydraulic pump (12) has a second maximum efficiency at a second flow rate (102) and a second operating pressure (101).The first operating pressure (101) is greater than the second operating pressure (101) and / or the first volume flow rate (102) is smaller than the second volume flow rate (102).

The invention discloses an inverse design method for a dual-mode internal contraction combined air inlet channel, and relates to a hypersonic air inlet channel of an aircraft. Comprising the following steps: designing a bimodal basic flow field based on a high / low-speed modal cruise Mach number as a design point; the inlet shape design of the air inlet channel is combined with the flight-launch integrated matching requirement; designing an air inlet compression molded surface by a streamline tracking technology; designing the optimal position of the rotating shaft of the splitter plate based on the maximum splitting control efficiency; designing a flow distribution plate rotation angle according to a flow distribution requirement in a flight envelope; the expansion effect caused by rotation of a turbine channel splitter plate and the compression effect generated by area shrinkage in a shared flow channel are comprehensively considered; and a turbine channel and a stamping channel are designed to be separated from each other. The dual-mode conversion adaptability of the internal contraction combined air inlet channel is remarkably improved, and the flow distribution requirements of all channels under different flight working conditions are met.

Computerized methods of classifying compute-intensive and memory-intensive applications are disclosed. A maximum efficiency for a user application is identified. A peak performance for a machine implementation is identified under one or more Quality of Service (QoS) parameters. Actual performance and resource usage of the application implementation using one or more performance vectors is measured and compared with the maximum efficiency and the peak performance. One or more areas of interest are identified using the performance vectors. If a critical hotspot area is identified from the one or more areas of interest, at least one feature is extracted from the critical hotspot area. An application signature is built if an approximation of performance is acceptable, based on the extracted features. The compute- and memory-intensive application may be classified based on the application signature.

The present application relates to the technical field of power system operation or management, and particularly to a partial discharge monitoring strategy optimization method and system based on dynamic resource allocation, which initializes monitoring parameters by constructing a three-level monitoring system including sensor nodes, aggregation nodes and a cloud processing center, periodically or triggeredly acquires system state information, calculates the risk level of each monitoring point in combination with a dynamic risk evaluation model, constructs a resource allocation optimization model with maximum efficiency based on the risk level and resource constraints, solves the optimal scheme by using an improved multi-objective particle swarm algorithm, issues it to each node to adjust the monitoring behavior, forms a closed-loop optimization, and dynamically updates the model parameters through an online learning mechanism. The present application realizes dynamic matching of risk and resources, improves monitoring accuracy and resource utilization, enhances the adaptability of the system to changes in equipment state and environment, and is suitable for partial discharge monitoring scenarios of various power equipment.

The invention discloses an air cooling unit efficiency optimization method and system based on multi-branch design, and relates to the technical field of air cooling control, and the method comprises the steps: collecting the total load demand of an air cooling unit, and the operation parameters and environment parameters of each branch; establishing an efficiency evaluation index by calculating the heat exchange amount and the energy consumption of each branch; classifying the branches into a high-efficiency branch group and a low-efficiency branch group; the total heat exchange amount of the high-efficiency group is obtained according to the heat exchange amount of each branch in the high-efficiency branch group, if the total heat exchange amount is larger than the total load requirement, the target heat exchange amount is obtained according to the heat exchange amount distribution load, and if the total heat exchange amount is not larger than the total load requirement, the branch with the maximum efficiency evaluation index in the low-efficiency branch group is added into the high-efficiency branch group; and the operation parameters are adjusted according to the target heat exchange amount, and branches in the low-efficiency branch group are closed. On the premise of guaranteeing that the load requirement is met, the efficient branch is used to the maximum extent, the situation that the load cannot be met due to blind closing of the low-efficiency branch is avoided, and stable operation is kept while the overall operation efficiency of the air cooling unit is improved.

The invention discloses a noise performance calibration method for a range extender of a new energy automobile, and the main conception of the method is as follows: firstly, formulating a range extender preliminary selection point by using a simulation result; based on the requirements of multiple target performances, obtaining an initial calibration strategy through the initial point selection; after the initial calibration strategy is tested on the power assembly rack, range extender test selection points are output, and whether the test selection points meet all requirements or not is judged by combining the multi-target performance requirements; and after the initial calibration strategy is revised according to the test selection points meeting the requirements in combination with the real vehicle test, the multi-target performance requirements are combined again, and if it is determined that the revised result meets the performance requirements, a final range extender calibration strategy is obtained. According to the method, early-stage guidance is carried out on formulation of a range extender noise performance calibration strategy and optimization of a vehicle body structure based on NVH, and rapid implementation of real vehicle engineering can be further guided in a later stage, so that the quietness problem of the range extender is solved at the maximum efficiency, and meanwhile, the multi-dimensional performance requirement of the vehicle can be considered.

The application discloses a method for improving the accuracy of steel plate defect detection and the fault tolerance rate of a camera, comprising arranging a group of cameras above and below the steel plate, the capture ranges of the cameras overlapping; firstly, carrying out hot state defect detection, and then carrying out cold state defect detection; collecting two-dimensional image features and color information of the defects through a color camera, recording the positions of the defect targets on the plate, recording the similarity of the defects, judging whether periodicity exists, combining the upstream hot state inspection mother plate number with a downstream table inspection system, and increasing information interaction and reminding functions; since the defects and pseudo defects have different color and shape features, the defect categories can be judged through the collected defect shapes, periodicity, color and position. The application has the advantages of improving the accuracy of defect discrimination with the maximum efficiency, improving the fault tolerance rate of the camera, reducing the labor intensity of workers, reducing safety hazards, and ensuring that the data is accurate and correct.

The application discloses a kind of gas turbine energy efficiency optimization methods, comprising: extracting multidimensional input features from gas turbine operating data, standardization and normalization processing are carried out to data;Gradient boosting regression model is used to carry out regression prediction to each target variable respectively, and the prediction result is recovered to ensure prediction accuracy by anti-standardization;The double-layer coupled multi-objective optimization model of upper layer and lower layer is established, the maximum efficiency, the minimum emission and the optimal economy are used as multi-objective in the upper layer, and the physical constraint and the maximum scheduling benefit are used as target in the lower layer, and the Pareto frontier solution set is generated by improved adaptive NSGA-II;The optimal solution set is calculated by applying the TOPSIS decision method to the weighted distance, the optimal solution is selected after the closeness degree is sorted, and the optimal operating parameter is output to provide support for actual decision.

The application relates to a low-grade waste heat utilization design method based on a medium-temperature compressed energy storage system, which comprises the following steps: adding a supercritical CO2 Brayton cycle as a system bottom cycle in the medium-temperature compressed air energy storage system, arranging a simulation analysis model for establishing the low-grade waste heat utilization of the medium-temperature compressed energy storage system; according to the simulation analysis model, a target function is established with the system total cycle efficiency eta en as an optimization target; in the case of meeting preset constraint conditions, an interpolation method is used to solve the target function, so that the parameters of CO2 are obtained, the constraint conditions include energy conservation constraint, heat exchanger two-side temperature constraint and CO2 transcritical state constraint; then, the specific parameters and efficiency of the bottom cycle are determined according to the parameters of CO2, and the maximum efficiency of the total cycle is obtained. The application reduces the use of heat exchangers, and further reduces heat exchange loss, so that energy is efficiently utilized.

The invention relates to the field of color sorters, and discloses a uniform feeding device of a granular material chute type color sorter, the uniform feeding device comprises a machine body, the top end of the outer wall of the machine body is fixedly connected with a top frame, the inner side wall of the top frame is provided with a uniform feeding mechanism, and the bottom end of the machine body is provided with a classification discharging port; a vibration motor is fixedly connected to the top end of the outer wall of the machine body, and a vibration feeder is arranged on the surface of the vibration motor; and the uniform feeding mechanism is used for carrying out step-by-step conveying and discharging on the particle materials. The uniform feeding mechanism is installed above the feeding port, materials coming from an elevator can be discharged at a low speed through horizontal conveying of the uniform feeding mechanism, and the materials can fall onto the vibration feeder of the color sorter at a low fall, so that the vibration feeder can accurately adjust the flow entering a channel by adjusting the frequency, and the feeding efficiency of the color sorter is improved. And the optimal working effect and the maximum efficiency of the color sorter can be ensured only by controlling the flow.

The paper presents an invention regarding a SPM smart power module, intended for the creation of distributed, safe and efficient energy networks. An elementary module is composed of an innovative Carnot Battery, with high power density, consisting of a heat engine / heat pump whose working agent (gas or vapor) goes through a Carnot / Ericsson / Stirling cycle and which transfers thermal energy between two accumulators with different temperatures. In supply mode, the cycle is run in the direct direction and supplies mechanical / electrical energy, and in charging mode, the heat pump receives energy from the outside (from the network or from renewable sources), and the cycle is run in the opposite direction, transferring thermal energy from the cold reservoir to the hot reservoir. The maximum efficiency of the battery is ensured by at least two isothermalizers, similar to the one described in PCT / R02023 / 050009. Through a system of tanks, heat exchangers, circulation pumps, solenoid valves and pipes, the elementary module can receive a series of extensions, both on the thermal energy capture and distribution side. An intelligent processor collects signals from the SPM system, from a dispatcher, from the Internet, etc, processes them, then sends commands to the motors that actuate the solid pistons of the isothermalizers, the flow regulators of the liquid pistons and of the cooling systems, the solenoid valves, the circulation pumps, in such a way as to ensure the maximum exergetic and economic efficiency of the module, the flattening of load peaks, the maximum safety, the maximum utilization coefficient of all components. Any energy production unit and any consumer can be included in a smart module that ensures the storage, then the supply of the entire energy offers, ensuring consumers a safe, uninterrupted supply.

The embodiment disclosed herein comprises a data center system including processing units (xPUs) and programmable logic devices. The xPUs can implement a design in hardware to perform specific operations appropriate to that design. The programmable logic devices can implement different designs based on the operations to be performed. For example, a plan can be created to process a workload received by the system. The plan can include several phases, which can be assigned to either the xPUs or the programmable logic devices based on the efficiency of performing operations within those phases. In this way, the system can operate with maximum efficiency when processing the workload.

The invention discloses a uniform sintering method of rotary body curved surface nano-silver, which comprises the following steps: sintering planar nano-silver in different regions according to different laser reflection angles, and determining optimal laser sintering parameters according to the resistance of the nano-silver in different regions after sintering; according to the optimal laser sintering parameters, the rotary body nano-silver is divided into a plurality of sintering strips, the laser scanning range corresponding to each sintering strip is obtained, and then the laser reflection angle needed by each sintering strip is calculated; under the conditions of the determined scanning frequency and the corresponding laser reflection angle, sintering is started from the center point of each sintering strip by adjusting the laser power corresponding to each sintering strip, so that the laser energy per unit length on each sintering strip is the same, and uniform sintering of the nano-silver on the curved surface of the rotary body is realized; according to the method provided by the invention, maximum-efficiency sintering is realized on the premise of ensuring uniform conductivity of the nano-silver, and uniform sintering of the curved-surface nano-silver of the rotary body is realized by adjusting laser energy.

The utility model relates to the technical field of power transmission lines, in particular to a stay wire foundation and a tower structure, and the stay wire foundation comprises a foundation body which comprises a corner structure and extension structures located on the two sides of the corner structure; at least one part of the pull ring is arranged in the corner structure of the base body, and at least the other part of the pull ring protrudes out of the base body so as to form a connecting part capable of being connected with a stay wire; the stay wire foundation is used for being matched with a tower structure for use, the foundation body is used for being buried in a soil layer, and the pull ring is used for being connected with one end of a stay wire so as to be connected with the tower structure through the stay wire. According to the scheme, the defects that in the prior art, the maximum efficiency of a contact surface cannot be fully exerted when a stay wire disc is horizontally placed, and the size cannot meet the design requirement due to the fact that the angle is difficult to accurately control when the stay wire disc is obliquely placed are overcome, and the purposes of improving the stability and construction precision of a stay wire foundation and simplifying the construction difficulty are achieved.

The application provides a motor calibration method, which comprises the following steps: obtaining a calibration point matrix, and then obtaining a direct-axis current search interval of a target working condition; when the direct-axis current search interval is not empty, searching for an optimal working current of the target working condition by using a preset search algorithm; when the direct-axis current search interval is empty, stopping searching for the optimal working current of the remaining working conditions under the target rotating speed, and taking the working conditions under other remaining rotating speeds as next target working conditions, so that the fast calibration of each working condition point is realized while the accuracy requirement is ensured, the calibration time is shortened, the maximum efficiency control is realized in the form of searching, and the motor external characteristic under the current rotating speed is autonomously determined in the case that the current search interval is empty, so that the self-adaptation is realized.

This utility model relates to the field of water quality testing. It discloses a cleaning structure and a hydropower station monitoring device, including a placement unit comprising a housing, a door hinged to the opening side of the housing, and a fixing ring fixed to the bottom of the housing; and a support unit placed above the fixing ring, comprising a housing assembly, a telescopic rod mounted on the housing assembly, a cleaning component mounted on the housing assembly, and a first power component disposed within the housing assembly. The beneficial effects of this utility model are: by controlling the rotation of the blades, the blades can clean floating debris and impurities in the water near the support unit, thereby improving the water environment and significantly enhancing the accuracy of subsequent water quality sensor data; the second motor can drive the bracket to rotate, thus changing the angle of the photovoltaic panel to ensure maximum efficiency in absorbing light energy.

The application relates to a kind of based on full-power converter's pumped storage air water pump water turbine unit coordination control method, comprising: constructing water pump water turbine coordination control unit, real-time monitoring the matching accuracy of speed and power;Dynamic characteristic matching control strategy based on model predictive control is constructed, maximum efficiency point tracking algorithm is called in strategy to complete optimal reference speed calculation, and optimal control sequence of water pump water turbine unit is generated in combination with system modeling, constraint setting;The pressure of the common tank is obtained in real time by the water pump water turbine coordination control unit, and the maximum efficiency point tracking optimization calculation based on hill characteristic full working condition of full-power converter is carried out, to guide the motor to operate at optimal speed.In the method of the application, when the system receives power grid dispatching instruction, the fast active regulation ability of the converter is used to compensate the response delay of the mechanical side, which improves the response bandwidth and trajectory tracking accuracy of the energy storage system as a flexible resource participating in power grid frequency regulation and peak shaving.

The application provides an MPPT circuit control method, an MPPT circuit and an energy storage device. The method comprises the following steps: detecting a first voltage and a first current input by a first branch and a second voltage and a second current input by a second branch in real time; determining a working state of the MPPT circuit according to the first voltage and the second voltage; and adjusting the power of a target branch through a first voltage boosting circuit or a second voltage boosting circuit according to the power difference between the first branch and the second branch when the MPPT circuit is in a pressure difference state. In the embodiment of the application, when the MPPT circuit is in the pressure difference state, the power of the target branch with lower power is dynamically adjusted, so that the power of the target branch is the same as the power of another branch except the target branch in the MPPT circuit, thereby ensuring that each branch works with the maximum power supported by the MPPT circuit, and further maximizing the use of light energy and improving the working efficiency of the MPPT circuit.

The required equivalent isotropic radiated power of a phased array can vary rapidly due to changes of channel conditions, link properties, communication distance, or mode of operation. Maintaining maximum efficiency of a phased array antenna over the entire range of required equivalent isotropic radiated power levels is challenging but highly desirable. An array controller is disclosed that computes the optimal set of power amplifiers and beamformer elements to be activated in order to achieve the highest possible efficiency, or equivalently, the lower possible power consumption for the equivalent isotropic radiated power while maintaining the selected beam pattern.

The invention discloses a passive extensible MPPT (maximum power point tracking) system for a piezoelectric transducer array, which comprises an energy acquisition circuit, a piezoelectric transducer and an MPPT circuit, and is characterized in that the MPPT circuit comprises a voltage extraction circuit, a hysteresis comparator and a DC-DC (direct current-direct current) converter; the passive extensible MPPT system for the piezoelectric transducer array allows the number of accessed PZTs to be flexibly expanded. And the method only depends on a passive device, so that the requirement on an active device is eliminated. The maximum power point tracking (MPPT) function of each PZT can be realized by only seven devices on average, and only three additional devices are needed for increasing each PZT, so that the MPPT circuit has great advantages in the aspect of the number of the devices, and the maximum MPPT efficiency can reach 99%. According to the invention, the system composition is simplified, the demand on a power supply is eliminated, the power consumption is ultra-low, and the MPPT operation can be executed even if the circuit is in a cold start state.

The invention relates to the technical field of combined machine tools, in particular to a multi-station horizontal numerical control boring, milling and turning combined machine tool which comprises a machine tool body, a movable stand column, a lifting type spindle box, a spindle, a milling cutter, a boring cutter, a drilling cutter and a three-station material moving structure connected with the machine tool body. The first motor is connected with a first screw rod, three groups of threaded clamping parts are mounted on the first screw rod, and the threaded clamping parts are connected with a rotating workbench; and the preassembled feeding and discharging mechanism is connected with the machine tool body. By means of the mode that the three-station feeding structure and the preassembling feeding and discharging mechanism are matched with each other, feeding and discharging operation is automatically conducted, so that the three-station feeding and discharging mechanism is suitable for conducting ordered boring, milling and turning on a set of workpieces, three sets of workpieces can be machined at the same time, the application range of the three-station feeding and discharging mechanism is widened, and the three-station feeding and discharging mechanism is also beneficial to being used with the maximum efficiency; the processing efficiency is improved.

The invention provides a hydraulic element for machining an automobile instrument mask, and belongs to the technical field of hydraulic elements. The first oil conveying pipe is mounted on one side of the oil tank, and a treatment tank is fixedly arranged on one side of the first oil conveying pipe. During use, oil is filtered through the filtering assembly, the purity of the oil is improved, meanwhile, when the oil is located in the treatment tank, the oil can pass through two rotating plates, a rotating rod can rotate through a bearing, and the oil can be filtered through the first oil conveying pipe; the two rotating plates are driven by oil to rotate circumferentially, the filtering assembly moves up and down through the supporting frame when the rotating plates rotate, the oil can evenly flow through the surface of the whole filtering assembly, it is ensured that each filtering layer plays the maximum efficiency, and therefore when a hydraulic element is used, the oil is filtered, and the oil filtering efficiency is improved. Impurities in oil are prevented from affecting operation of a hydraulic system, and meanwhile the filtering effect is good.

The application provides a control parameter optimization method for a hypersonic aircraft based on a deep Q network, and the method comprises the following steps: establishing a hypersonic aircraft dynamics model; decomposing the hypersonic aircraft dynamics model into a speed subsystem and an altitude subsystem; designing a speed subsystem adaptive controller; designing an altitude subsystem adaptive controller; and optimizing the design parameters a in steps 3 and 4 by using a deep Q learning theory h 、a γ 、a α 、a Q , and designing a reward function. According to the needs of a user, the application can dynamically optimize the parameters of the controller of the hypersonic aircraft by designing the reward function, so that the control system can exert maximum efficiency.

The paper presents an invention regarding a SPM smart power module, intended for the creation of distributed, safe and efficient energy networks. An elementary module is composed of an innovative Carnot Battery, with high power density, consisting of a heat engine / heat pump whose working agent (gas or vapor) goes through a Carnot / Ericsson / Stirling cycle and which transfers thermal energy between two accumulators with different temperatures. In supply mode, the cycle is run in the direct direction and supplies mechanical / electrical energy, and in charging mode, the heat pump receives energy from the outside (from the network or from renewable sources), and the cycle is run in the opposite direction, transferring thermal energy from the cold reservoir to the hot reservoir. The maximum efficiency of the battery is ensured by at least two isothermalizers, similar to the one described in PCT / R02023 / 050009. Through a system of tanks, heat exchangers, circulation pumps, solenoid valves and pipes, the elementary module can receive a series of extensions, both on the thermal energy capture and distribution side. An intelligent processor collects signals from the SPM system, from a dispatcher, from the Internet, etc, processes them, then sends commands to the motors that actuate the solid pistons of the isothermalizers, the flow regulators of the liquid pistons and of the cooling systems, the solenoid valves, the circulation pumps, in such a way as to ensure the maximum exergetic and economic efficiency of the module, the flattening of load peaks, the maximum safety, the maximum utilization coefficient of all components. Any energy production unit and any consumer can be included in a smart module that ensures the storage, then the supply of the entire energy offers, ensuring consumers a safe, uninterrupted supply.

The utility model discloses a ground gathering and transportation pipeline connector with a hydrate anti-blocking structure, which belongs to the technical field of natural gas gathering and transportation pipelines and comprises a main frame, anti-blocking inner frames are arranged on the top surface and two ends of the main frame, a heat preservation cavity is arranged in the main frame, and each anti-blocking inner frame comprises a power box. One side of the power box is provided with a power interface, the bottom end of the power box is connected with a panel frame, and the interior of the panel frame is connected with an electric heating rod. According to the pipeline connector, the metal ring pieces are fixedly embedded into the inner walls of the two ends of the outer pipe frame, each set of metal ring pieces can be connected with the electrical bar through the top face connecting parts and can be matched with the electrical bar connected with the power box for heating, the metal ring pieces connected with the two ends of the electrical bar are heated, and therefore hydrates generated at the pipeline connecting positions due to low temperature are heated and melted; and an anti-freezing agent can be synchronously injected in cooperation with a spraying frame, so that thawing of the hydrate at the joint is completed at the maximum efficiency, dismounting is convenient, and follow-up treatment on the hydrate in the pipeline system is convenient.

A control device performs: searching for a maximal efficiency voltage which is an output voltage of the first converter at which the output power of the first converter becomes maximal; storing the maximal efficiency voltage obtained by the searching; performing a voltage adjustment process of changing the output voltage of the first converter in a direction in which the output power of the first converter is increased by using the maximal efficiency voltage as an initial value; changing the output voltage of the first converter to the maximal efficiency voltage at that time when the correspondence relationship between the output voltage of the first converter and the output power corresponding to the output voltage of the solar panel is changed during the voltage adjustment process; and performing the voltage adjustment process again with the output voltage of the first converter after the change as a new initial value.

The utility model provides a double-unit floating type wind power generation system of an active synchronous yaw system, relates to the technical field of wind power generation, and aims to solve the technical problems of low wind energy capturing efficiency, short service life, concentrated risk and serious accident consequence due to the fact that a floating type double-wind-power-unit system adopts a single-point mooring system for positioning in the prior art. The two wind power generation systems collect wind energy at the same time, convert the wind energy into electric energy and transmit the electric energy to an ashore variable electric field through a submarine cable, wind speed sensors of the two wind turbine generators detect the wind speeds of the two wind turbine generators respectively, the difference value of the two wind speeds is the wind thrust difference value, and then the wind thrust difference value is converted into a wind speed line. An electric signal corresponding to the wind speed line is transmitted into the main controller, the main controller controls the driving assembly to drive the shell to rotate so as to drive the two wind power generation systems to rotate synchronously until the wind turbine generator directly faces incoming flow, wind energy can be collected at the maximum efficiency, and the wind energy capturing efficiency is improved.

The utility model discloses a draught fan installation structure of a dry type transformer, which comprises a draught fan unit, a lower clamping piece, a fixing unit and a rotation adjusting unit, the rotation adjusting unit is connected with the lower clamping piece and can move relative to the lower clamping piece, the draught fan unit is arranged on the fixing unit, and the rotation adjusting unit is arranged on the fixing unit. And the fixing unit is arranged between the rotary adjusting units and can rotate relative to the lower clamping piece along the rotary adjusting units so as to adjust the height of the fan unit. The draught fan installation structure of the dry type transformer is simple in structure, high in universality, capable of adjusting the direction of a draught fan air channel in a multi-direction and multi-angle mode from the up-down direction, the left-right direction and the front-back direction, easy and convenient to operate and capable of utilizing the draught fan at the maximum efficiency.

The invention discloses a killing chain construction method based on a particle swarm algorithm, and belongs to the technical field of cooperative combat systems. The method comprises the following steps: dividing a killing chain construction problem into four links of detection, positioning, interference and strike which are executed in sequence, respectively establishing corresponding task allocation models, and taking maximization of efficiency of each link as a target function; and solving each link model by adopting an improved decimal discrete particle swarm algorithm to obtain an optimal task allocation scheme, and sequentially combining all link schemes to complete the construction of the killing chain. According to the method, the modeling process is simplified, the calculation efficiency is improved, the method is suitable for a large-scale combat scene, an optimization scheme can be quickly generated, and the requirements of actual combat for real-time performance and accuracy are effectively met.