36results about How to "To achieve a balanced effect" patented technology

The invention discloses a dynamic load balancing method for a distributed file system under a cloud environment. The method mainly comprises the steps of acquiring information of all nodes of the distributed file system under the cloud environment, judging whether the file system is balanced, computing a threshold needed when the system is balanced according to a disk space utilization rate, a CPUutilization rate, a memory utilization rate, a disk I/O occupancy rate and a network bandwidth occupancy rate of each node, and performing unbalance adjustment on the load of the file system according to the threshold and the disk space utilization rate. The method provided by the invention balances the load of the file system while supporting the execution of a cloud computation task, and continuously adjusts the load via monitoring information of the nodes, and thus the execution efficiency of cloud computation to the file system is improved.

The present invention provides a method for avoiding frequent interruption to occupy excess CPU resources in a real-time operation system, the method includes: a threshold is provided for each type interruption respectively, the threshold is a maximum ratio of the interruption time generated by the CPU allowance the type interruption to the whole interruption time; when the interrupt of the type is coming, CPU judges the ratio of the interruption time generated by the type interruption to the whole interruption time achieving the threshold set corresponding to the type interruption or not, if yes, shielding the type interruption; if not, continuous executing the interruption process. The invention leaves from the whole global of occupying condition of CPU resource, planning the CPU occupation of the interruption, and actively processing interruption and inhibition, effectively inhibiting frequent interruption, avoiding the excess occupation of CPU resource, achieving the effect of balancing utilization of system CPU resource.

The invention discloses an optimal modulation method suitable for a three-phase four-wire system three-level converter. A multi-phase control midpoint potential balance algorithm is given based on a simplified 3D-SVPWM method under an a-b-c coordinate system, a compensation capacity factor reflects the compensation capacity of each phase on the midpoint potential offset, the potential offset is distributed to phases with the midpoint potential balance capacity according to the compensation capacity and the midpoint potential offset condition, multiple phases jointly participate in midpoint potential balance control, the time quantum needed for compensating for the offset is calculated through an offset mathematical model, then the time quantum acts on the output state of the three-level converter, and therefore the purpose of balancing the midpoint potential is achieved. The simplified optimal modulation method suitable for the three-phase four-wire system three-level converter can precisely control direct current side capacitor voltages.

The invention relates to a non-woven type lithium-ion battery separator single side coating device and a coating method thereof. The device comprises a non-woven type lithium-ion battery separator unwinding device, a micro-concave coating device, a back covering roller, a synchronous belt device I, a synchronous belt device II, a primary drying channel, a secondary drying channel, a final-stage drying channel, a non-woven type lithium-ion battery separator winding device, a phase conversion device and a cloth guide roller, when the coating is carried out, according to different transmissions of the non-woven type lithium-ion battery separator in the phase conversion device, and the functional requirements of the water-based coating liquid and the solvent-based coating liquid for the singleside coating on the non-woven type lithium-ion battery separator are achieved. The prepared non-woven type lithium-ion battery separator has the advantages that the flatness is high, the roughness issmall, and the coating is uniform, no leakage coating phenomenon exists on the coating of the separator, the problem that non-coating layer infiltration of the non-woven type separator is uneven is effectively solved, and the consistency of battery assembly performance is improved.

One or more embodiments of the invention provide a neutral-point potential balance control method and device based on the current polarity. The method comprises the steps of collecting the three-phasecurrent polarity of an alternating-current side of a three-level inverter, and dividing a three-level vector space; obtaining a neutral point current value according to the position of the large sector; obtaining a voltage difference value of an upper capacitor and a lower capacitor of the direct-current side; obtaining the polarity of a balance factor according to the voltage difference value and the neutral point current value; adjusting the voltage difference value to obtain the size of a balance factor; obtaining a balance factor according to the polarity of the balance factor and the size of the balance factor; and introducing the balance factor into a seven-segment SVPWM algorithm, and adjusting the action time of positive and negative small vectors so as to carry out balance control on the neutral point potential of the three-level inverter. According to the invention, only three-phase current signals on the alternating-current side and upper and lower capacitor voltage signalson the direct-current side of the three-level inverter need to be collected, three-phase voltage does not need to be additionally collected, discussion does not need to be conducted on a small sectorto which reference voltage belongs, and thus the problem that neutral point potential balance control is complex is solved.

The invention discloses an unmanned aerial vehicle self-balancing picking device based on a lever principle and a control method thereof. The device comprises an electric fruit picking device, a camera fixing support, a binocular vision camera assembly, a front rod body, a connecting mechanism, a ball screw sliding table, a rear rod body, a balance weight box, a shear mechanism, a weight sensor and a fruit branch clamping mechanism. During use, the device is fixed on an unmanned aerial vehicle, a target is searched for through images collected by a binocular vision camera, the position of the unmanned aerial vehicle is finely adjusted, and then the electric fruit picking device is controlled by a center controller to execute picking operation and work of the ball screw sliding table. After picking is completed, the weight sensor feeds back preliminary detection quality information of the fruits to an unmanned aerial vehicle processor, and then the ball screw sliding table adjusts the telescopic length based on a calculation result of the lever principle to basically balance the suddenly increased weight of the fruits due to sudden load change at the front end of the unmanned aerial vehicle during picking, so that the stability of the unmanned aerial vehicle is ensured. The device is suitable for being used in the fields of fruit harvesting and pruning in the forest and orchard.

The present invention belongs to the technical field of feeds for laying hens, particularly relates to a pure plant feed for the laying hens and a preparation method thereof, and solves a technical problem that in the prior art, the laying hens fed by the pure plant feed for the laying hens is relatively low in egg laying rate. The feed comprises the following components: 60-65 parts of corn, 16-20 parts of soybean meal, 2-5 parts of corn gluten meal, 5-10 parts of bran, 0.5-1.5 parts of soybean oil, 4-5 parts of stone granules, 5-6 parts of stone powder, 0.7-1 part of calcium hydrogen phosphate, 0.2-0.4 part of edible salt, 0.12-0.2 part of methionine, 0.1-0.18 part of lysine, 0.1-0.18 part of choline chloride and 0.5-0.8 part of multi-vitamin and multi-mineral. Compared with the prior art, the provided pure plant feed for the laying hens is used for feeding the laying hens, improves the egg laying rate of the laying hens, and reduces heavy metal pollution caused by animal protein feed raw materials due to no addition of the animal proteins.

The invention provides a fan hub balancing structure which comprises a hub body. The hub body is provided with a top, a side portion extending outwards from the periphery of the top and a lip portion. The lip portion is connected with the lower end of the side portion and provided with at least one unnecessary weight portion. The unnecessary weight portions are located on the lip portion and balance portions are formed on the lip portion after the unnecessary weight portions are removed. The fan hub balancing structure has the beneficial effects that the balance effect is achieved for hub body, and construction is convenient.

The invention provides a method, a system and a device for load balancing. The method comprises steps: when a destination storage device receives a connection request from a source storage device forwarded by a network device through a first network interface, whether data borne by the first network interface and data borne by other network interfaces achieve load balancing is judged; if not, the destination storage device refuses to build connection with the source storage device, a notification message is sent to the source storage device through the network device, the source storage device modifies HASH parameters in the connection request, and the modified connection request is sent again to the destination storage device through the network device; and if yes, the destination storage device builds connection with the source storage device through the first network interface, and data from the source storage device and forwarded by the network device are received through the first network interface. Through the technical scheme of the invention, the problem of the unbalanced HASH processing result can be avoided, data packet loss is reduced, traffic overload of a certain network interface is avoided, and waste of network interface resources is avoided.

The invention discloses an intelligent numerical control manipulator equipment capable of conveniently collecting waste materials. The intelligent numerical control manipulator equipment capable of conveniently collecting the waste materials comprises a bottom plate and a machine box shell, wherein a balancing weight is arranged in the bottom plate, a rubber gasket is arranged on the outer side of the bottom plate, a fixing strip is installed in the rubber gasket, and moving rolling wheels are arranged below the fixing strip; a movable locking strip is arranged on one side of the movable rolling wheel, and a baffle strip is arranged on the other side of the movable rolling wheel. The intelligent numerical control manipulator equipment has the beneficial effects that the intelligent numerical control manipulator equipment capable of conveniently collecting the waste materials is provided with a threaded elastic joint, the installed threaded elastic joint and a mechanical clamping strip are arranged, a mechanical port has a large space, and equipment assemblies can be conveniently installed and replaced; due to the fact that the threaded elastic joint is provided with a threaded structure, a user can conveniently replace different types of mechanical clamping strips according to different material attributes of the waste materials, and the waste materials can be clamped by the equipment to be transported and transferred under the interaction of the threaded elastic joint and the mechanical clamping strip, so that the treatment function is achieved.