367results about How to "Improve performance parameters" patented technology

An electric generator system for producing electric power from the environmental temperature changes such as occur during a normal summer day on Earth or Mars. In a preferred embodiment a phase-change mass is provided which partially or completely freezes during the relatively cold part of a cycle and partially or completely melts during the relatively hot part of the cycle. A thermoelectric module is positioned between the phase-change mass and the environment. The temperature of the phase-change mass remains relatively constant throughout the cycle. During the hot part of the cycle heat flows from the environment through the thermoelectric module into the phase change mass generating electric power which is stored in an electric power storage device such as a capacitor or battery. During the cold part of the cycle heat flows from the phase change mass back through the module and out to the environment also generating electric power that also is similarly stored. An electric circuit is provided with appropriate diodes to switch the direction of the current between the hot and cold parts of the cycle. A preferred phase change mass is a solution of water and ammonia that has freeze points between about 270 K to about 145 K depending on the water ammonia ratio. Preferably, a finned unit is provided to efficiently transfer heat from a module surface to the environment.

The invention relates to a composition for a flame-retardant polyvinyl chloride (PVC) plastic foam board, and the flame-retardant PVC plastic foam board produced by a double screw extrusion method. The composition comprises the following components in part by weight: 100 parts of polyvinyl chloride, 5 to 25 parts of polyacrylate copolymer, 0 to 30 parts of chlorinated polyethylene, 0 to 30 parts of chlorinated polyvinyl chloride, 20 to 70 parts of flame retardant and smoke suppression agent, and 0 to 5 part of plasticizer, and also comprises a resin melt reinforcing agent and additives such as a foaming agent, a lubricating agent and a stabilizing agent and the like. After the produced flame-retardant PVC plastic foam board is detected by Shanghai Building Material and Component Quality Surveillance Office and State Laboratory of Fire Science (University of Science and Technology of China, Hefei), the oxygen index is more than or equal to 32, the smoke density grade is less than or equal to 75, the average combustion time is less than or equal to 30 seconds, the heat release rate is less than 250W/g, the heat conductivity is 0.047W/m.K, and the flame-retardant PVC plastic foam board meets the B1 requirement of GB/T8624-1997, and meets the V-0 standard of UL-94.

The invention relates to a strapdown inertial navitation system for agricultural machines. The system comprises a six-axis inertial sensor and a central control unit. The six-axis inertial sensor comprises acceleration sensors in three directions and a three-axis gyroscope sensor. The central control unit comprises a coordinate conversion module, a speed position calculating module, an attitude matrix calculating module and an attitude calculating module. The invention further relates to a control method for the agricultural machines based on the strapdown inertial navitation system. According to the strapdown inertial navitation system and control method for the agricultural machines of the structure, the six-axis inertial sensor is adopted, the size is small, weight is low, the structure is simple, the cost performance is high, the system can be integrated into a control center of the agricultural machines conveniently through the modular design, meanwhile, the advantages of being stable in running, rich in output motion information and the like are achieved, control precision is high, especially the requirement of the agricultural machines and other ground vehicles for aided driving control is met, and the application range is wide.

The invention relates to a temperature and humidity independent control air-conditioning system based on the membrane distillation technology, which comprises a lithium bromide absorption refrigerating system, a lithium bromide solution dehumidifying system and an auxiliary connecting part, wherein the lithium bromide absorption refrigerating system is utilized to control the supply air temperature, and the lithium bromide solution dehumidifying system is utilized to control the supply air humidity; the solution analysis process in the lithium bromide absorption refrigerating system and the solution regeneration process in the lithium bromide solution dehumidifying system are subjected to centralized treatment in a membrane distillation component; a concentrated lithium bromide solution after treatment is divided into two parts, wherein one part is taken as an absorbent solution of an absorber in the absorption refrigerating system, and the other part is taken as a spraying solution in the solution dehumidifying system to perform dehumidification treatment on the air; simultaneously a low-temperature diluted lithium bromide solution treated by the dehumidifying system is taken as a cooling solution of the absorber in the absorption refrigerating system to recover energy, so that the efficiency of the system is improved and the energy of the system is saved.

The invention relates to the technical field of manufacturing radiating fins, in particular to a manufacturing method of a vehicle aluminum alloy radiating fin. The vehicle aluminum alloy radiating fin is manufactured in the mode of heating extrusion; aluminum alloy is obtained by aluminum liquid regeneration smelting, wherein, smelted aluminum liquid contains 85% of aluminum ingot A00 and residual leftover material in percentage by weight; generated aluminum alloy comprises the following components in percentage by weight: 0.325-0.355% of silicon, 0.50-0.54% of magnesium, 0.10-0.30% of iron,less than 0.02% of copper, less than 0.02% of manganese, less than 0.02% of chromium, less than 0.02% of zinc, less than or equal to 0.03% of titanium, less than or equal to 0.05% of other single impurity by control, less than 0.15% of total trace element, and the balance aluminum. The invention has the beneficial effect of simple technology and low cost; in addition, the invention fully utilizesleftover and accelerates industry development, each performance parameter of the manufactured radiating fin is relatively improved, so that the radiating fin has favorable performance.

The invention provides a hollow anode for a plasma thruster of a cusped magnetic field, and relates to a plasma thruster of a cusped magnetic field. By the hollow anode for the plasma thruster of the cusped magnetic field, the problems that a permanent magnet is demagnetized and the service life of a thrust is shortened due to the fact that an anode of the existing thruster of a cusped magnetic field is over hot are solved. The ionization rate of the thruster is increased, and the performance of the thruster is further improved. The hollow anode for the plasma thruster of the cusped magnetic field comprises a gas distributor, a buffering cavity and a ceramic sleeve, wherein a gas supply piece comprises a guide tube and a cavity; and the gas distributor comprises the gas supply piece and a distributor bottom plate. The hollow anode for the plasma thruster of the cusped magnetic field is used in the field of plasma thrusters of the cusped magnetic field.

The invention discloses a camera online debugging method. A camera is arranged on a mobile terminal. The camera online debugging method includes the following steps: adding DRIVER_ATTR attributes in a camera bottom driving code at an android mobile terminal, and building document nodes; connecting a person computer (PC) with the mobile terminal through a universal serial bus (USB), switching the mobile terminal to an adb mode, opening the mobile terminal camera, and observing and testing camera image effect; selecting manufacturers and models of the camera at the PC end, and filling modified parameters; calling an adb program through the PC end, writing the switched parameters in the document nodes built in the mobile terminal through the USB, executing a store function of the DRIVER_ATTR attributes through the mobile terminal, and writing the parameters in the camera; contrasting and modifying repeatedly till results are satisfied; and storing the parameters. The camera online debugging method performs online real-time humanized and efficient debugging on the camera, can effectively improve camera debugging efficiency of the android system, and picks up best effect parameters conveniently.

The invention discloses an automobile reduction gearbox casing. The casing comprises 0.2% of yttrium, 0.06% of titanium, 0.05% of cerium, 0.05% of lanthanum, 0.02% of samarium, 0.5% of zinc, 2% of manganese, and the balance being magnesium. The invention also discloses a preparation method of the automobile reduction gearbox casing. The automobile reduction gearbox casing is excellent in breaking strength, hardness, creep resistance and corrosion resistance and has good market application value.

The invention relates to an inter-core secure communication system for a multi-core heterogeneous domain controller, which comprises a plurality of physical partitions divided according to the type of processors in the multi-core heterogeneous domain controller and a network-on-chip connected with each physical partition; processors of the same type are located in the same physical partition; each processor comprises a processor core and an independent cache unit which are connected with each other; each physical partition further comprises a shared communication bus and a shared memory unit, and the isomorphic processor cores of the processors of the same type in the same physical partition are connected with the shared communication bus through the independent cache units of the processors; the shared communication bus is connected with the shared memory unit, and the shared communication buses in different physical partitions are connected with the network-on-chip. According to the invention, an inter-core communication mechanism between a plurality of isomorphic processor cores and heterogeneous processor cores is established, the transmission quantity of data between the cores and the safety of the data are optimized, and the comprehensive performance of the multi-core heterogeneous domain controller is improved.

The invention discloses a method for manufacturing a capacitor of a metal-insulator-metal (MIM) structure. The manufacturing method comprises the following steps: firstly, depositing a lower electrode plate; secondly, manufacturing a dielectric layer; and finally, depositing an upper electrode plate. The method for manufacturing the dielectric layer comprises the steps of: depositing a SiO2 layer after depositing a SiN layer. The method provided by the invention has the advantage of improving performance parameters of the MIM capacitor.

The invention discloses a ceramic slice and a preparation method thereof. The ceramic slice is mainly made of zirconia and rare earth oxides, is prepared through a hot-press vibration sintering technology, and has a thickness of 0.01 to 0.6 mm. Correspondingly, the invention also discloses a preparation method of the ceramic slice. The preparation method comprises the following steps: carrying out pre-pressing and forming on powder, which has been subjected to a pretreatment, so as to obtain a half-finished product; subjecting the half-finished product to a low temperature thermal treatment; subjecting the half-finished product to hot-press vibration sintering; and finally polishing and burnishing the half-finished product so as to obtain the ceramic slice with a thickness of 0.01 to 0.6 mm. The strength of the provided ceramic slice can reach 1400 MPa or more, the toughness can reach 10 MPa.m<1/2>, and the performance parameters of the ceramic slice are prominently higher than that of common ZrO2 products. The ceramic slice can satisfy the requirements on slice and ultrathin slice with a thickness of 0.01 to 0.6 mm and has the advantages of difficultness in breakage, little loss, long service life, and durability.

The disclosure provides a target voice extraction method, device and equipment, a medium and a joint training method. The target voice extraction system comprises a voice feature extraction model anda voice extraction model. The joint training method of the target voice extraction system comprises the following steps: performing feature extraction on training reference sample voice data by usingthe voice feature extraction model to obtain a reference voice feature vector, setting the training reference sample voice data to be pure voice data corresponding to the target object; performing feature fusion based on training voice data and the reference voice feature vector by using the voice extraction model to obtain a fusion feature vector, setting the training voice data to be noisy voicedata from which target voice data corresponding to a target object is to be extracted; utilizing the voice extraction model to perform voice extraction based on the training voice data and the fusionfeature vector to obtain the target voice data; and performing joint training on the voice feature extraction model and the voice extraction model based on the reference voice feature vector and thetarget voice data.

The invention relates to a new energy vehicle water-cooling motor shell manufacturing process and its structure. The water-cooling motor shell manufacturing process is reasonably designed and is capable of increasing the various performance parameters of the water-cooling motor shell. According to the invention, after eleven steps of processing and manufacturing referred to as from (a) to (k), the water-cooling motor shell is characterized by its stable and reliable structure, absence of casting defects and residual sand cores in spiral waterway and up-to-scratch hardness. Therefore, the service life time of the water-cooling motor shell is increased and the actual utilization need can be met.