47results about How to "Achieve design goals" patented technology

The invention discloses a cluster fault tolerance system, a device and a method. The system includes: a remote checkpoint server which is used to respond the remote checkpoint request from a faulty node and execute the checkpoint operation; a node faulty checking module which is used to monitor the operating system of a local node and the running state of an assigned process and to trigger a remote checkpoint; and a communication system checkpoint module which is used to realize the checkpoint of the communication device and support the recovery function of communication breakpoint. The invention provides localized fast fault restoration for the parallel processing cluster, has a lower overhead and good expansibility, and makes ideal availability for the cluster system with ten billions and hundred billions calculation scale.

The invention provides a digital ship model plane motion organization experimental method based on computation fluid dynamics CFD software FLUENT. The method includes applying a FLUENT pre-process software GAMBIT to establish a research object model and a control domain; arranging a triangle grid on the model surface, then arranging a unstructured grid in the control domain; setting the boundary condition, joining an user-defined function UDF document, introducing dynamic grid technology, using a finite volume method based on the complete unstructured grid, realizing a pure swaying movement, a pure rising and falling movement, a pure oscillatory movement, a pure pitching movement and a pure rolling movement carried on by a plane motion organization experiment; applying a science computation software MATLAB to do Fourier expansion of a force and a moment coefficient obtained by the FLUENT, being fitted by EXCEL least squares method, obtaining a hydrodynamic force coefficient of a vertical plane and a horizontal plane as well as the related hydrodynamics analysis by dimensionless. The invention carries on the digit plane motion organization experiment using the CFD software, can satisfy the request of hydrodynamic force data in the design initial period of a submersible.

The invention discloses a design method for a vehicle body front-end structure with vehicle front surface 25% overlapping ratio collision, and aims to solve the problems of design blindness in an existing optimization design process for vehicle body front-end members with vehicle front surface 25% overlapping ratio collision, and repeated modeling and long calculation time during adoption of a CAE technical means in the optimization design process. The design method for the vehicle body front-end structure with the vehicle front surface 25% overlapping ratio collision comprises the steps of 1, building an equivalent simplified model of a vehicle: 1) extracting a stiffness characteristic and an inertia characteristic; 2) parameterizing the extracted stiffness characteristic and inertia characteristic; 3) clearly determining a simulation mode of an equivalent simplified model of each member of the vehicle body front-end structure; 4) simplifying a front longitudinal beam, a front fingerboard and an auxiliary frame; 5) processing other parts of a vehicle body; and 6) verifying the equivalent simplified model of the vehicle; 2, obtaining an anti-collision design objective of the vehicle body front-end structure; 3, designing the front longitudinal beam, the front fingerboard and the auxiliary frame; and 4, performing simulation verification on front surface collision resistance of the vehicle body front-end structure after optimization design.

The invention belongs to mesh data management and sharing technical area. Characters are that self-similar layered isomorphic architecture is adopted in the system; granularity of node in the system can be adjusted arbitrarily. Thus, flexibility and extensibility of system are increased. Moreover, concept of super node is introduced in the system. Architecture full connection is adopted among these super nodes. The architecture reduces spending brought by huge route table to be maintained among nodes as well as influence on system caused by adding and quitting node frequently. The system includes two kinds of data: local metadata and global metadata. Global metadata makes storing and transferring data simpler; but user does not need to change custom of use. Parsing method in step-by-step is adopted for searching metadata. Thus, message for querying location of copy is limited in local area as far as possible.

Provided is a method and system for rapidly positioning a vehicle going into town for the first time. The method comprises the steps that received passing vehicle data are put into a data receiving queue by monitoring passing vehicle information of an inspection spot; a datum obtained from the data receiving queue, is firstly compared with a town-into inspection spot serial number in stored data, and if the inspection spot serial number does not exist, early warning is not generated, the processing of the datum is finished, and the processing of the next datum is started; if the inspection spot serial number exists, whether a plate number in the record exists in the stored data is compared, if the comparison result is yes, the processing of the datum is finished, otherwise, real-time early-warning information is generated, meanwhile, the plate number is added to the stored data, and information data related to the vehicle passing the inspection spot are recorded into a database for the vehicles going into town for the first time; in the database, each motor vehicle has only one record, and the data storage amount is largely lowered. The method and system for rapidly positioning the vehicles going into town for the first time solve the problem that a traditional vehicle-passing information data size is large, the vehicles going into town for the first time can not be positioned in real time, and historical inquiry is slow, and enable a user to rapidly find the information of the vehicles going into town for the first time.

The invention provides an antenna and a radio-frequency signal transmit-receive device. The antenna comprises a substrate and an antenna structure arranged on the substrate. The antenna structure comprises a grounding plane, a first radiation portion, a second radiation portion, a metal coupling portion, a third radiation portion and a feed-in point. The grounding plane comprises a grounding point; the first radiation portion has first bending, second bending and an open end; the first radiation portion extends from the grounding point, and the open end of the first radiation portion is adjacent to the grounding plane; the second radiation portion extends from the section between the first bending point of the first radiation portion and the grounding point to the section between the second bending of the first radiation portion and the open end; the metal coupling portion is adjacent to the grounding plane, the second bending and the open end of the first radiation portion as well as the second radiation portion; the third radiation portion is arranged between the second radiation portion and the grounding plane and extends from the metal coupling portion to the section between the first bending of the first radiation portion and the grounding point; and the feed-in point is coupled at the connection place of the third radiation portion and the metal coupling portion. The radio-frequency signal transmit-receive device can receive and send a plurality of radio-frequency signals of a plurality of frequency bands.

The invention discloses a wide-beam and high-gain antenna, comprising a cross oscillator pair arranged on a reflector and formed by a plurality of arrays, wherein the cross oscillator pair comprises pendulous wideband oscillators printed on two dielectric substrates respectively; the two pendulous wideband oscillators are cross, two arms of the oscillator are symmetric inverse L-shaped sheets with each including a vertical section and a horizontal extended section at the top of the vertical section, and the tail end of the horizontal extended section is a downward bent section; a parasitic unit is arranged on the upper side of the oscillator arm, a microstrip line is arranged on the other side of each of the two dielectric substrates, and the reflector is used for dual-polarized feed. The parasitic units are arranged on the upper side of the oscillator arms, thus realizing wide beams and good matching of single PCB (Printed Circuit Board) cross oscillators; and the wide-beam wideband PCB cross oscillator arrays obtain the characteristics of dual polarization, horizontal wide beams and high-gain radiation. The method is simple to implement, low in cost and suitable for batch production, and is applicable and effective for design and improvement of conventional wideband and high-gain oscillator antennas.

The invention discloses a hydraulic anchoring manipulator for a railway vehicle. The hydraulic anchoring manipulator for the railway vehicle is mainly composed of a lifting arm, a telescopic arm 5 and a tail end gripper. The hydraulic anchoring manipulator is driven hydraulically and is composed of the lifting arm, the telescopic arm and the tail end gripper. A four-bar mechanism of a double-bar structure is adopted for the lifting arm, and the strength of critical components such as a telescopic cylinder and supporting rods is checked. A hydraulic system adopts the energy-saving design, and the position of the manipulator is locked by a hydraulic lock. Redundancy control is carried out through combination of program interlocking and the travel time to guarantee the reliability of the system. Through the field use, the manipulator can achieve automatic searching of the spatial position of the vehicle, automatic hooking and unhooking of a draw gear and positioning and position locking of the vehicle within the horizontal distance of 1.5 m, reaches the design goal and can achieve safe and high-efficiency production.

The invention relates to a multi-degree-of-freedom metal rubber damper, and belongs to the field of mechanical vibration isolation. The multi-degree-of-freedom metal rubber damper comprises a base connector, a metal rubber bar set A, a load connector, a metal rubber bar set B, a sleeve set, a screw set and a nut set. The base connector and the load connector are coaxially arranged up and down, the metal rubber bar set B is arranged in the load connector, the metal rubber bar set A is arranged in the base connector and is inserted into the load connector, and metal rubber bars in the metal rubber bar set A are coaxial with metal rubber bars at the corresponding positions in the metal rubber bar set B. Sleeves in the sleeve sets are inserted into center holes of all the metal rubber bars in the metal rubber bar set A and the metal rubber bar set B, and all screws in the screw set are inserted into the sleeves in the sleeve set and are connected with all nuts in the nut set in a threaded mode to constitute a whole. The multi-degree-of-freedom metal rubber damper achieves the purpose that damping can be provided by the metal bars no matter what sort of relative movement is made between a base and a load, thereby being very suitable for spaceflight structures.

The invention provides a balance assembly, a rotor assembly and a compressor. The balance assembly comprises first balance pieces used for being fixed to a rotor and second balance pieces which can beassembled to the first balance pieces and used for adjusting the weight of the balance assembly and/or the distance from the gravity center of the balance assembly to a rotating center line of the rotor. According to the balance assembly, the rotor assembly and the compressor, due to the fact that the first balance pieces are provided with the second balance pieces which can adjust the weight ofthe balance weight and/or the distance from the gravity center of the balance assembly to the rotating center line of the rotor, when the balance assembly is assembled to the rotor, the number and theassembling manner of the first balance pieces and the second balance pieces can be adjusted according to the weights of the crank shaft eccentric part and the roller part of the rotor assembly and the distance from the gravity center of the eccentric part to the rotating center line of the rotor, and the balance coefficient design target is achieved. According to the balance assembly, the balanceassembly can be adjusted according to the demands of the rotor assembly, and therefore the balance assembly is universal and suitable for different types of compressors.

The invention provides an optical observation window capable of being used in a high-temperature and high-pressure environment. The observation window comprises a protective cover plate (1), an upperflange plate (3), an upper sealing gasket (4), a light-transmitting material (5), a lower sealing gasket (6), a lower flange plate (8) and a sealing gasket (9) for installing the observation window, the observation window further comprises an observation window assembling bolt (2) and a bolt (7) for installing the observation window. The observation window assembly bolt (2) is used for assemblingan observation window assembly; and the observation window mounting bolt (7) is used for mounting the observation window on an observation object. The structure of the optical observation window capable of being used in the high-temperature and high-pressure environment avoids direct contact between a light-transmitting material and an observed piece, greatly reduces potential safety hazards whenthe observation window works, and has the advantages that mounting and dismounting are efficient, cleaning and maintaining are easy, the light-transmitting material is easy to replace, and a protective cover is convenient to use.

The invention belongs to the technical field of air pre-cooling and discloses an air-separation pre-cooling system. The air-separation pre-cooling system comprises an air cooling tower, a chilled water system and a circulating water system. A distributor and an air-water separation device are arranged in the middle of the air cooling tower to separate the air cooling tower into an air cooling tower upper section and an air cooling tower lower section. The chilled water system is used for conducting heat exchanging on the air cooling tower upper section, and the circulating water system is usedfor conducting heat exchanging on the air cooling tower lower section. A water sealing groove preventing air backflow is additionally arranged outside the air cooling tower, and through the differential pressure, chilled water subjected to heat exchanging is led into the air cooling tower so as to recover the cooling capacity of nitrogen. High-temperature air, washed through circulating water, atthe air cooling tower lower section rises to the air cooling tower upper section to be continuously cooled through the chilled water, and part of water vapor is condensed as supplementary water of the chilled water system. The water quality of the chilled water system in the air-separation pre-cooling system is ensured, and the problem that the content of calcium and magnesium ions in the chilledwater is increased, and thus crystallization plugging occurs to the air-separation pre-cooling system is solved.

A mechanical device of an automatic radioactive liquid medicine split charging system is characterized by comprising a tray moving device (1), a needle cap clamping device (2), a needle tube clamping device (3), a liquid pumping device (4) and a proximity switch (5). An automatic radioactive liquid medicine split charging system comprises a mechanical device and further comprises a control cabinet set (7), a computer system (8) and a shielding device (9). The invention discloses an automatic radioactive liquid medicine split charging method which is implemented by utilizing an automatic radioactive liquid medicine split charging system.