46results about How to "Meet the needs of stability" patented technology

The invention relates to a device for testing the density of ultra-thin glass, comprising an electronic balance, on which a beaker support and a weighing pan bracket for placing glass samples are arranged, a beaker is set on the beaker bracket, and the upper end of the weighing pan bracket is located above the beaker A thermometer is set on the inner wall of the beaker; the test device also includes a pendant and a sling; the pendant is hung on the upper end of the weighing pan bracket, one end of the sling is tied to the pendant, and the other end is provided with a slipknot for fixing the glass sample. The invention also includes a method for testing the density of ultra-thin glass using the device. Through the self-made pendant and hanging rope lamp test accessories, the present invention makes up for the deficiency of the existing density testing device in testing the density of thin glass sheets with a thickness less than 0.5mm, greatly reduces the test error, and provides a very practical device for thin glass testing. And the accessories are simple to make and convenient to obtain materials.

The invention discloses an adaptive supporting method for a large-diameter reflector. An existing reflector supporting method is difficult to ensure the surface form accuracy and assembly requirementsof a reflector under conditions such as self weight and temperature change. According to the adaptive supporting method for the large-diameter reflector of the invention, memory alloy driving modulesare uniformly distributed in a flexible supporting module in a six-point manner; the flexible supporting module is finely adjusted; three or more flexible supporting units are uniformly distributed along the circumferential direction of the reflector so as to be used for supporting the reflector. On the basis of the driving characteristic of memory alloy, the heating of the memory alloy is controlled through a central signal processor, and therefore, the deformation quantity of memory alloy wires can be controlled; the pressure values of supporting points after deformation are fed back to thecentral signal processor through pressure sensors; continuous adjustment is carried out, so that stress exerted by the flexible supporting module onto supporting portions can be finely adjusted and balanced; the influence of the errors of block supporting structures such as motors can be avoided; the static and dynamic structural rigidity of the supporting structure of the method of the inventioncan be adaptively and intelligently adjusted, and therefore, the influence of gravity, external load, temperature change, vibration and the like on the surface form accuracy of the reflector can be decreased.

The invention relates to a vehicle speed real-time detection method with field programmable gate array (FPGA) and belongs to the technical field of signal processing. In order to resolve problems existing in the prior art, the vehicle speed real-time detection method with FPGA is utilized, through predetermining fundamental frequency, eliminating noise interference, and combining detection schemes, the vehicle speed real-time detection is effectively achieved, especially when field interference is very serious and requirements of precision and reliability of real-time detection are demanding, such as a real-time magnetoelectric vehicle speed signal detection and a magnetoelectric tachometric pulse signal detection. A signal real-time cycle detection method is applied in the vehicle control technology, so that a vehicle speed is detected effectively, and not only is the requirement of being real-time is satisfied, but also the requirement of stability is satisfied. The vehicle speed real-time detection method with FPGA is particularly suitable for detecting a military vehicle speed signal. When the vehicle speed real-time detection method with FPGA is used, work efficiency and work precision of a magnetoelectric tachometric transducer and a Hoare tachometric transducer are improved significantly.

The invention discloses a damping type meal delivery robot stable in walking. The damping type meal delivery robot stable in walking comprises a walking part, a machine body, a visual integration areaand a supporting plate, the walking part is internally provided with a bottom fixing rod, a fixing support and a middle fixing rod, a buffer part is fixedly arranged in the middle of the middle fixing rod, a vibration absorption barrel fixing plate is fixedly installed at the bottom of the buffer part, and a vibration absorption barrel lower part, a vibration absorption barrel upper part and a spring are arranged inside the buffer part; and the tail ends of force arms are rotationally installed on the outer sides of second rotating shafts, and a tray bottom fixing plate is arranged at the lower end of the supporting plate. According to the damping type meal delivery robot stable in walking, the walking part adopts crawler-type design, so that the walking stability can be better guaranteedcompared with a common walking structure; vibration is absorbed through hydraulic damping of the vibration absorption barrel lower part and hydraulic damping of the vibration absorption barrel upperpart, and the stability is improved; and the design of sliding rails, spring mounting seats and tray springs is achieved, so that the stability of the sliding rails is improved again, the stability ofthe surfaces of the sliding rails is greatly improved under the cooperation of buffering and vibration absorption of the buffer part, and then the requirement for the stability of the meal delivery robot is met.

The invention discloses an automatic winding device with a high-precision cutting function based on textile production, and belongs to the technical field of textile production. The automatic winding device comprises a base, wherein the top of the base is fixedly connected with a side plate, the top of the side plate is fixedly connected with a top plate through a first electric push rod, the top of the top plate is provided with a second driving mechanism, the top of the second driving mechanism is fixedly connected with a limiting mechanism, and a reel is located on one side of the bottom of the top plate. According to the automatic winding device, through a designed unfolding mechanism, a clamped winding plate can be driven to be unfolded through extension of a clamping cylinder at the moment so that the relative winding diameter of the winding plate can be adjusted, the winding plate can meet the adjustment requirements of the winding diameters of different pieces of cloth after being stressed and unfolded, and after winding is completed, the winding plate on one side can be pulled to move out from the clamping cylinder and an inserting hole through an inserting rod, and then a wound cloth roll can be rapidly discharged, so that the discharging difficulty is effectively reduced, and the overall processing and winding requirements are met.

The invention discloses a frequency converting control method appropriate for a charging process of an electric automobile. The frequency converting control method appropriate for the charging process of the electric automobile includes the following steps of fitting a charging power curve in a controller of a battery charger of the electric automobile, and obtaining P 0, P max, P min, and deltaP according to the charging power curve; working out present charging power P d; determining a range which the charging power P d is within; outputting the present frequency conversion operation power P out and obtaining present switching frequency value; judging a range of the frequency conversion operation power P out, wherein the charging time quantum t1-t2 ends; judging a range of present charging power P d in the time quantum t1-t2; outputting present frequency conversion operation power P out and obtaining present switching frequency value; and finishing the charging process when value of the P d is less than charging-stopping power P min. The frequency converting control method appropriate for the charging process of the electric automobile reduces power loss of a system when the vehicle-mounted battery charger charges a storage battery, improves charging efficiency, reducing battery disturbance in the charging process, and improves stability and capacity of resisting disturbance of the system.

The invention belongs to the technical field of decoction piece detection. The invention particularly relates to a near-infrared quality control method for rapidly detecting pollen typhae charcoal processing in real time by using a gradient discrimination method. The method comprises the following steps: (1) preparing and collecting a sample and acquiring spectral data of the sample in two modes;(2) preprocessing the spectral data, and determining characteristic spectrum segments of different acquisition modes; and (3) establishing a qualitative identification model by adopting a gradient identification method. According to the method, the pollen typhae charcoal processing quality is objectively, rapidly, simply, conveniently and digitally evaluated by utilizing a near-infrared analysis method based on a gradient discrimination method for the first time; and a basis is provided for production and quality supervision of the pollen typhae charcoal decoction pieces.

The invention discloses a construction process of a cable crane hoisting system, and belongs to the field of bridges. The construction process comprises the following steps of step (1), respectively carrying out the construction of foundation embedded parts of towers on both sides on transition piers on both sides of a bridge, and then assembling the towers on both sides and installing wind cableson the corresponding towers; step (2), installing cable saddles on the tops of the towers on both sides, and carrying out the construction of main anchors on both sides; step (3), installing a main bearing cable and installing a winch at the same time; step (4), carrying out the installation of a lifting trolley, a traction rope and a hoisting rope; and step (5), carrying out hoisting system inspection and trial hoisting. According to the scheme of the invention, the towers are erected on the tops of the bridge transition piers, the span of a cable system is reduced and the height of the towers is reduced; and the arrangement not only greatly saves the construction cost and speeds up the construction progress, but also ensures the construction safety of a cable crane used in a large-span,variable cross-section steel truss continuous rigid frame bridge, and the hoisting construction process is simple.

The invention discloses a control moment gyroscope, a control moment gyroscopic instrument with the control moment gyroscope and a mobile device having the control moment gyroscopic instrument. The control moment gyroscope provided by the invention comprises a driving device and a gyroscope disc. The driving device drives the gyroscope disc to rotate along the rotation axis of the gyroscope disc. The gyroscope disc includes a main disc body and at least two sub disc bodies disposed on the main body. The sub disc bodies are uniformly distributed along the circumference of the gyroscope disc and rotate around the auto rotation axis, the auto rotation axis intersects a normal plane of the rotation axis, and the direction of angular velocity components of the sub disc bodies in the direction of the rotation axis coincides with the direction of the angular velocity of the main disc body. The advantages of compact overall size of the gyroscope disc, small volume and large moment of momentum are gained.

The invention discloses a real-time monitoring method for judging the stability of a direct-current power distribution system. The method comprises the following steps: obtaining a sample set; constructing a training system based on a full-connection neural network, wherein the training system comprises a generator network model, a discriminator and a classifier network model; constructing a loss function of the training system; training a training system by using a loss function, and determining a parameter generator to form a high-confidence pseudo-tag direct-current voltage data model; and inputting real DC voltage information obtained by real-time observation into the discriminator and classifier network model to obtain a stability real-time discrimination result of the real DC voltage information. According to the method, enough stable / unstable label direct-current voltage data and a proper stable / unstable label proportion can be obtained, so that the stability of real observation data of a power grid system can be judged in real time. The invention discloses a real-time monitoring device for judging the stability of a direct-current power distribution system. The real-time judgment result of the stability of real direct-current voltage information is accurately and instantly obtained.

The invention discloses a method for installing a main bridge variable cross-section continuous steel truss girder by using a cable crane, and belongs to the field of bridges. The method comprises thesteps of firstly, constructing a pier top steel truss girder; then conducting main girder cantilever assembling construction, specifically, hoisting steel truss girder sections on the two sides of each main pier through symmetrical cantilevers of the cable crane, and installing the steel truss girder sections; arranging a lower parallel connection concrete plate at the steel truss girder section,and conducting construction of a second steel truss girder section of each main pier; after third steel truss girder sections of the main piers are connected, pouring concrete into the steel truss girder rod pieces of the sections; after the concrete in the rod pieces meets the requirement, conducting next steel truss girder section construction of each main pier, and stopping mid-span construction until the previous section of the closure section is reached. By adopting the scheme, the acting force of the deck crane on the steel truss girder is avoided, the stress of the pier girder joint part is reduced, the symmetrical cantilever assembly can be realized relative to each bridge main pier, the construction operation surface is increased, and the construction progress is accelerated.

The digital control alternating current stabilized voltage power supply includes a triangular wave generating circuit and a controllable sine generating circuit; an output ends of the triangular wave generating circuit and the controllable sine generating circuit are connected to a comparator; an output end of the comparator is controllably connected to an electronic switch; the electronic switch drives a load via an LC filter bank; the digital control alternating current stabilized voltage power supply also includes a voltage current sampling module; the voltage current sampling module samples the output state of the load, and the sampling result is input in a microprocessor; and an output end of the microprocessor is controllably connected to the controllable sine generating circuit through an AD converter. The digital control alternating current stabilized voltage power supply has the stable output voltage, can adapt output features of a switch power supply which takes the alternating voltage as the input voltage, and can meet the demands of an alternating current power supply converter for the stability of the output voltage.

The embodiment of the invention discloses a remote sensor gas verification system used in the horizontal or vertical direction. A remote sensor gas calibrating device of the system comprises a fixed bottom plate, a gas chamber, a push-pull mechanism, a control circuit board, an oxygen sensor, an oxygen content display screen, a gas source connector, a gas inlet hole, a shell and an upper cover, the auxiliary supporting and adjusting device comprises a supporting piece, a vertical rod, a clamping base and an adjusting handle, and when the axial direction of a light path passing hole is the horizontal direction, gas verification in the horizontal direction can be achieved. The remote sensor gas verification device can be adjusted to rotate from the horizontal direction to the vertical direction by loosening an adjusting handle; according to the remote sensor gas verification system for the horizontal or vertical direction, the axial direction of the light path through hole is the vertical direction, so that gas verification in the vertical direction can be realized, the remote sensor gas verification system for the horizontal or vertical direction provided by the embodiment of the invention can fulfill the aim of simultaneously and compatibly carrying out gas verification in the horizontal direction and the vertical direction, and the convenience is improved.

The invention provides a fund supervision method and device based on educational training. The method comprises the steps: setting a plurality of bank main accounts so as to monitor bank account sub-accounts of a plurality of educational training institutions, and setting a plurality of sub-accounts under the bank main accounts; isolating sub-accounts under different main accounts; establishing aneducation fund risk prediction model by utilizing an Apriori algorithm; and predicting the fund risk of the corresponding sub-account according to the education fund risk prediction model. Accordingto the invention, the requirement of fund stability of a training education institution is met, students do not lose confidence to the institution, the crisis of trust loss of both parties is overcome, the safety of training funds is improved, and the stable and long-term development of an education training market is further ensured.

The invention provides a damping device. The damping device comprises a shell, a push rod, a first magnet and a second magnet, the shell is provided with a cylindrical side wall and a top wall connected with the top end of the cylindrical side wall, a longitudinal inner cavity of the shell is defined by the cylindrical side wall and the top wall, the push rod axially extends to penetrate through the shell, the top end of the push rod extends out of the top wall of the shell, the first magnet is arranged at the top end of the push rod, the second magnet is arranged below the top wall of the shell, in addition, a sliding block can be arranged on the push rod, and the sliding block on the push rod can slide along the whole length of the inner cavity of the shell and has the relatively large stroke. Therefore, even if an AGV runs on a bumpy road surface with large vibration, a good damping effect can be achieved, and the stability requirement in the cargo carrying process of the AGV is met.

The invention discloses a suspending type construction platform for a curve ceiling, which comprises a plane platform and several step platform units; the plane platform is horizontally hung at the place corresponding to the top point of the curve ceiling through a hanging rod; one end of each step platform unit is hooked with a connecting bending hook, and the other end is provided with a hangingmechanism for hooking the connecting bending hook; one end of the step platform unit is hooked with a hanging rod, the step platform units are connected end to end through the connecting bending hookand the hanging mechanism so as to form a step-shaped operation platform of which whole body is downwards inclined; every step platform unit is hung on the curve ceiling through the hanging rod. Theinvention further discloses an installing method, which includes steps of hoisting the plane platform through a crane, and then orderly hoisting the step platform units; hooking every platform throughthe connecting bending hook, and finally welding and reinforcing. The suspending type construction platform can adapt to the shape of the curve ceiling, mount and dismount conveniently, and realize circular use; besides, the suspending type construction platform does not occupy the floor area and avoids the blockage at entrance and exit.

The invention discloses a wheeling path selection method based on big data analysis. A wheeling path selection set S and the historical wheeling path number are set, and a total energy model of a power system is established; a real-time wheeling path selection set S0 is obtained, the real-time total energy e0 of the power system is calculated, and the total energy of the simulated power system after power wheeling according to a wheeling path is calculated; all wheeling paths in the wheeling path selection set are re-ordered according to a solution result; wheeling paths satisfying conditionsare output according to information of a trend section; and when there is a wheeling demand, power wheeling is carried out according to the output wheeling path. Big data analysis is carried out for wheeling path selection by setting a wheeling path selection manner in real time, an optimized wheeling selection scheme is formed so that power wheeling can be carried out timely, and the used wheeling path can satisfy requirement for the stability of the system to largest extent on the basis of a total energy function.

The invention is suitable for the field of compressors, and discloses a self-adaptive controller and an online adjustment method for a blade tip clearance of a magnetic suspension compressor, the online adjustment method for the blade tip clearance of the magnetic suspension compressor is implemented through the self-adaptive controller, the self-adaptive controller automatically adjusts control parameters according to the balance position of a magnetic suspension rotor, and the desired system responsiveness is guaranteed.The online adjustment method for the blade tip clearance of the magnetic suspension compressor comprises the steps that the balance position of a rotor of the magnetic suspension compressor is adjusted according to the required blade tip clearance; the self-adaptive controller adaptively adjusts control parameters and then outputs a control signal to control a magnetic suspension bearing of the magnetic suspension compressor, so that the rotor is stabilized at a balanced position; when the balance position of the compressor rotor is changed, the control parameters of the self-adaptive controller are automatically changed, manual parameter debugging is not needed, the stability and good response performance of the system can still be guaranteed, and real-time adjustment of the blade tip clearance is guaranteed when the compressor normally operates.

The invention provides a novel stone table. The novel stone table comprises a table top and a table leg, and is characterized in that a hard transparent plastic layer is arranged on the surface of the table top, the hard plastic layer is fixed to the table top through screws, the table leg is cylindrical and movably connected with the table top, and the table top can rotate with the table leg as a fulcrum. The novel stone table has the advantages that by the adoption of the technical scheme, the novel stone table is novel in shape, the hard transparent plastic layer on the surface makes the table top smooth and flat, an advertisement page or a public service announcement leaflet can be inserted between the hard plastic layer and the table top, and therefore the novel stone table is functional; the table top is movably connected with the table leg and can rotate, the novel stone table is provided with only one table leg and looks like a mushroom as a whole, and therefore the novel stone table is novel in design and also meets the requirement for stability.

The invention discloses a power station boiler water-cooled wall temperature online prediction method based on a gating neural network, and belongs to the field of power station boiler equipment water-cooled wall pipeline temperature measurement. According to the method, the problem that long-term real-time accurate prediction of the temperature of the water wall tube is difficult to realize by utilizing the existing updating model is solved. The method comprises the steps that the water wall pipeline temperature and temperature related variables are collected; preprocessing the water wall pipeline temperature and the temperature related variables to obtain preprocessed data, and taking the preprocessed data as a historical training data set; establishing a gating neural network model, and performing offline training on the gating neural network model by using historical training data; performing model parameter online updating on the offline trained gating neural network model to obtain a gating neural network model of which the parameters are updated online; and inputting the water-cooled wall pipeline temperature related variables collected in real time into the online updated gating neural network model, and outputting to obtain the predicted water-cooled wall pipeline temperature. The method is used for predicting the temperature of the boiler water wall pipeline.

The invention provides a firmware guiding method and a firmware guiding device of a currency detector. The method comprises the following steps: acquiring a backup firmware file in a firmware backup file menu when the currency detector is started through the firmware guiding device; then loading a corresponding mapping firmware file generated according to the backup firmware file to a work file menu; operating the mapping firmware file in the work file menu to start the currency detector; performing backup on an original firmware file to obtain a backup firmware file; then mapping the backup firmware file to the work menu to start the currency detector. The firmware file of the currency detector is double-protected, the destroy probability of the original firmware file is reduced, the currency detector is normally started and operated, the starting stability of the currency detector is improved, and the demand of people for stability of the currency detector is effectively met.

The invention relates to a flange centre grinding method, and belongs to the technical field of machining. A process screw hole is formed in one end of the centre face of a workpiece to be processed,a tool combined to a centre and matched with the centre in size is manufactured, the process screw hole and a screw hole in one end of the centre face are in triangular symmetric distribution, the triangular layout conforms to the requirement for the stability of a clamping surface, and the workpiece to be processed is clamped on the tool through the process screw hole for grinding. The flange centre grinding method has the advantages that processing of parts is completed, and various accuracy requirements of the parts are ensured. The tool is simple, practical and low in cost, the efficiencyis improved, the quality is ensured, and the actual problems at the production site are effectively solved.