66results about How to "Fast load" patented technology

The invention relates to the technical field of power sources and correcting circuits, in particular to a method and application of a reference voltage correcting circuit for controlling a buck converter. According to the circuit, the output end of a comparator EA is connected with one end of a capacitor C and a grid electrode G of a field-effect tube, a source electrode S of the field-effect tube is connected with a constant current source 2I input signal line, one end of a constant current source 2I output signal line is connected with the other end of the capacitor C, a tapping line of the constant current source 2I output signal line is connected to the ground, a drain electrode D of the field-effect tube is the VREF output voltage point C of a comparator and is connected with one end of a resistor R and one end of a constant current source I output signal line, the other end of a constant current source I input signal line is connected with a power source VDD, the other end of the resistor R is connected with the reverse input end of the comparator EA, a voltage VREF is arranged at the reverse input end of the comparator EA, a voltage FB is arranged at the same-phase input end of the comparator EA, and the circuit output voltage point C is controlled by the voltage VREF and the voltage FB. Compared with the prior art, input offset voltages are small, the output voltage errors caused by a COT structure can be removed, and the output voltage precision is improved.

The invention discloses a load balancing method applied to a load balancing device. The load balancing method includes the following steps that: when it is determined that the amount of business data flowing out from a first virtual node meets an alarm threshold value, a virtual node of the same type with a second virtual node is determined, wherein the second virtual node is used for processing the business data from the first virtual node; and after the virtual node of the same type with the second virtual node is set to a standby state, when it is determined that the amount of the business data meets a fault threshold value, forwarding configuration information between the first virtual node and the virtual node in the standby state is increased, and the virtual node in the standby state is set to a load state so as to share the load of the second virtual node, and the alarm threshold value is smaller than the fault threshold value. The invention also discloses a load balancing device.

The invention belongs to the technical field of air purification, and particularly relates to a method for preparing an air purification material from a microporous medium through catalytic oxidation and the air purification material. According to the method, the air purification material is prepared by taking a microporous medium substrate, an oxidizing agent, a catalyst and a pH color developing agent as raw materials through the steps of 1 centrifugal impregnation loading, 2 steaming and pressing loading, 3 drying, 4 surface color developing treatment and the like; the catalytic oxidizing agent is loaded on the wall face of the microporous medium and microporous channels through a centrifugal impregnation mode, and therefore the loading speed and the loading degree are high; by means of steaming and pressing loading, the loading degree can be intensified under the saturated vapor pressure and internal energy, the structure of the microporous medium can be optimized, hole penetrating is improved, and improvement of the purification property is promoted; after surface color developing treatment, and the color of the surface of the purification material can be changed by acidic materials generated in purification, so that the experience feeling of the purification capacity and effect is obtained. The air purification material has the advantage of achieving thorough, rapid and lasting purification.

The invention discloses a composite basalt fiber purification material and a preparation method thereof. The purification material is prepared from a composite basalt fiber carrier and water purification microorganisms loaded on the carrier, and the composite basalt fibers are prepared from 95.0-99.9 parts of basalt and 0.1-5.0 parts of phosphate. According to the composite basalt fiber purification material and the preparation method thereof, the composite basalt fibers which are subjected to composite modification treatment and have a large quantity of surface active sites, low surface energy and higher bonding capability with microorganisms serve as the carrier, then the microorganisms are loaded on the composite basalt fibers, and thus the water purification material is obtained; the purification material is large in microorganism loading capacity and high in water purifying efficiency, and application and popularization of the basalt fiber water purification material are promoted.

The invention belongs to the field of mechanical structure control, and relates to a wearable lower limb walking exoskeleton device. The device comprises a waist strap, servo motor speed reduction modules, first cylindrical gears, second cylindrical gears, end covers, thigh protecting bushes, shank protecting bushes, foot protecting bushes, pin shafts and other components. The device is compact in structure and reasonable in motion freedom degree distribution, servo motors are adopted in power, and are matched with three-level speed reduction devices, the beneficial effects of being high in control precision, high in response speed and large in load are achieved, a composite with the high strength and the small mass is selected in component material selection, wearing is comfortable, operation is flexible, and the movable range of a person can be expanded to be maximum limit.

The invention discloses a self-assembled cyclodextrin functionalized magnetic-gold composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing diamino-modified magnetic Fe3O4@SiO2 sub-microspheres by utilizing solvothermal reduction, TEOS hydrolysis and silanization reaction; preparing gold nanoparticles by adopting asodium borohydride reduction chloroauric acid method, mixing the gold nanoparticles with the diamino-modified magnetic Fe3O4c sub-microspheres to obtain a more stable magnetic gold nanoparticle compound by utilizing coordination and chelation of diamino on the surfaces of the magnetic sub-microspheres and the gold nanoparticles. Meanwhile, sulfhydrylated beta-cyclodextrin is prepared and is fixedon the surface of the magnetic Fe3O4@SiO2 / Au composite material through an Au-S bond, so that the magnetic functional composite material is prepared. A magnetic nano material is used as a chiral selector carrier and combined with a self-assembly technology as a fixing mode to prepare a chiral recognition material, so that the defects of stability and loading capacity of a chiral stationary phase are expected to be improved, and rapid screening of a chiral selector and efficient and high-capacity chiral separation are realized.

The invention belongs to the technical field of air purification, and particularly relates to a method for preparing an air purification material from a microporous medium through catalytic oxidation and the air purification material. According to the method, the air purification material is prepared by taking a microporous medium substrate, an oxidizing agent, a catalyst and a pH color developing agent as raw materials through the steps of 1 centrifugal impregnation loading, 2 steaming and pressing loading, 3 drying, 4 surface color developing treatment and the like; the catalytic oxidizing agent is loaded on the wall face of the microporous medium and microporous channels through a centrifugal impregnation mode, and therefore the loading speed and the loading degree are high; by means of steaming and pressing loading, the loading degree can be intensified under the saturated vapor pressure and internal energy, the structure of the microporous medium can be optimized, hole penetrating is improved, and improvement of the purification property is promoted; after surface color developing treatment, and the color of the surface of the purification material can be changed by acidic materials generated in purification, so that the experience feeling of the purification capacity and effect is obtained. The air purification material has the advantage of achieving thorough, rapid and lasting purification.

The invention relates to a method for loading a metal organic skeleton structure with noble metal nano-particles. The method comprises the following steps: with cuprous oxide as a reducing template, feeding cuprous oxide nano-crystals into a mixed solution of a noble metal precursor and an organic ligand; generating oxidation-reduction reaction by virtue of the noble metal precursor and cuprous oxide so as to generate noble metal nano-particles, and simultaneously coordinating Cu<2+> with the organic ligand so as to generate MOFs; and packaging the generated noble metal nano-particles with generated MOFs, so as to load MOFs with the noble metal nano-particles by virtue of a one-step method. According to the method, the loading of the noble metal nano-particles in MOFs is realized by virtueof the simple and rapid method, and the loading of different noble metal nano-particles in MOFs can be realized by only changing the noble metal precursor and the corresponding solvent. The method issuitable for preparing long-stability noble metal nano-particle composite catalyst and is applied to the catalytic chemical field.

The invention discloses a manned lunar rover wheel soil bin test bed, and belongs to the technical field of spaceflight. According to the invention, rolling wheels of a test trolley are in rolling connection with a U-shaped rail, the front end of a steel wire rope is fixedly connected to a roller of a traction resistance system, and the rear end is fixedly connected with a tension sensor of the test trolley; and a horizontal displacement sensor, a vertical displacement sensor, the tension sensor, a speed reducer assembly and a dynamic torque sensor are all controlled by a computer. According to the test bed, the defects of small size load, low speed, unstable traction resistance and the like of a tested wheel of a small lunar rover wheel soil bin test bed can be overcome; the tested wheelis large in size, large in load, high in speed and constant in traction force; and the test result is more accurate. The manned lunar rover wheel soil bin test bed is convenient to operate, safe and reliable, the wheel performance under different conditions is tested by changing the load, the rotating speed, the traction resistance and the like of the tested wheel, the effect of multiple test conditions can be achieved, the test diversity can be improved, data such as the test rotating speed, the test time and the power can be output at any time through the sensor and the computer, and recording is convenient.

The invention discloses a preparation method of a hemostatic sponge. The steps are as follows: (1) disperse oxidized cellulose powder in water to prepare an oxidized cellulose dispersion with a mass fraction of 0.1wt% to 2.0wt%, and then oxidize the cellulose The dispersion liquid is subjected to high-pressure homogenization treatment to obtain a nano-oxidized cellulose suspension; (2) inject the nano-oxidized cellulose suspension into a mold, and perform 1 to 7 freeze-thaw cycles to obtain a nano-cellulose hydrogel. The cellulose hydrogel is freeze-shaped, and then freeze-dried to obtain a hemostatic sponge; wherein, one freeze-thaw process is: freezing at -40°C to -18°C for 8-16 hours, and then thawing at 4-25°C for 8-16 hours. The invention also provides a hemostatic sponge prepared by the preparation method. The hemostatic sponge has high carboxyl content, high porosity and water absorption capacity, and can quickly absorb excess blood on the wound surface to achieve the purpose of effective hemostasis.

Disclosed in an embodiment of the present invention is a load balancing method applied in a load balancing apparatus. The method comprises: when a service data volume from a first virtual node is determined to have reached an alert threshold, determining a virtual node having a same type as a second virtual node, wherein the second virtual node is configured to process the service data from the first virtual node; after setting the virtual node having the same type as the second virtual node to the standby state, when the service data volume is determined to have reached a fault threshold, adding forwarding configuration information between the first virtual node and the virtual node in the standby state, and setting the virtual node in the standby state to a loading state in order to share a load of the second virtual node, the alert threshold being less than the fault threshold. Also disclosed in the embodiment of the present invention is a load balancing apparatus.

The invention discloses a method for realizing horizontal expansion of a one-to-one network address translation gateway, which relates to the technical field of gateway translation; two ends of a NAT gateway are configured: the inner side and the outer side of the NAT gateway are respectively connected to two switches through two network interfaces, and the network interfaces are bonded , the switch on the same side is bonded, and the NAT gateway is configured with openflow rules; the switch and the NAT gateway conduct an OSPF session through the OSPF routing protocol. The rule modifies the source IP address to the IP address of the public network, and guides the traffic to the external switch. In the direction of the return of the traffic, the external switch sends the traffic to a NAT gateway according to the IP quintuple packet. The NAT gateway will Change the target IP address to a public IP address, and send the traffic to the internal switch.

The invention discloses a self-assembled amino acid derivative functionalized magnetic-carbon nanotube composite material and its preparation method and application. The magnetic Fe is prepared by a one-step solvothermal reduction method. 3 o 4 ‑Multi-walled carbon nanotube composites utilizing magnetic Fe 3 o 4 Hydrophobic interaction of / MWCNTs composite material, N-hexadecyl-L-hydroxyproline self-assembled on the surface of carbon nanotubes to obtain a stable complex, this material was used as a chiral adsorbent to resolve amino acid enantiomers isomers to test their chiral resolution performance. The present invention uses magnetic nanomaterials as chiral selector carriers, combined with self-assembly technology as a fixed method to prepare chiral recognition materials, which is expected to improve the stability of the chiral stationary phase and the lack of loading capacity, and realize rapid screening of chiral selectors. Efficient, high-capacity chiral separations.