1061results about How to "Achieve fine-tuning" patented technology

The invention provides an Internet picture filtering method and device. The Internet picture filtering method comprises the following steps: according to different preset dimensions, zooming an obtained Internet image to generate pictures of different dimensions; calculating the quick characteristics of the pictures of different dimensions; adopting preset image annotation information and the quick characteristics to train to generate a target image classifier; utilizing the target image classifier to detect the Internet image, and determining a candidate image area which contains target attributes; inputting the candidate image area into a convolutional neural network to calculate the characteristics of the convolutional neural network; and utilizing the classifier to classify whether the picture contains a target image or not according to the convolutional neural network to realize picture filtering. Internet pictures can be favorably filtered, calculation efficiency is improved, a user can carry out fine tuning on a deep neural network on line, and therefore, detection performance of the Internet picture filtering method is better than the detection performance of other methods.

The trimmed buckwheat sheller includes one outer barrel serving as the casing, one inner bushing, one bearing seat with one rotating shaft, one movable wheel on the shaft, one upper cover, one fixed wheel fitting the movable wheel. It features the upper cover comprising one inner ring and one outer ring connected through threads for easy interval regulating and trimming. The present invention has the advantages of high regulating precision, simple and fast regulation, high production efficiency and capacity of processing buckwheat in different plumpness.

The invention relates to a single-blade installation hanger for a wind power generating set. The main boom is installed in the middle of the main girder body. The lower end of the main boom is supported on the lower end of the main girder by a pin shaft and can rotate around the pin shaft. There is also a tilting cylinder between the main beam and the two ends of the tilting cylinder are respectively hinged on the lower end of the main beam and the middle part of the main boom. The two ends of the main beam are respectively equipped with blade clamping devices, which are adjusted by the expansion and contraction of the tilting cylinder. The hoisting angle between the main boom 2 and the main beam body, so as to realize the inclination angle change of the blade clamped in the blade clamping device in the air -30°~30°; the rear end of the upper clamp and the lower clamp of the blade clamping device The clamping cylinder and the adjusting cylinder are respectively installed between the clamping column and the two ends of the adjusting cylinder are respectively hinged on the upper part of the clamping column and the rear end of the lower clamp, and the two ends of the clamping cylinder are respectively hinged on the middle and upper part of the clamping column. On the rear end of the clamp; the upper clamp and the lower clamp realize closing and angle adjustment by adjusting the expansion and contraction of the oil cylinder and the clamping oil cylinder.

The invention discloses a laser communication capturing and tracking system. A variable-focus liquid crystal lens is combined with a liquid crystal optical phased array and a liquid crystal optical wedge; the receiving powers of a coarse capturing detection module and a fine tracking detection module are detected in real time in a process of capturing and tracking space laser communication; according to change of the optical receiving power, the variable-focus liquid crystal lens dynamically controls the beam-divergence angle of a laser communication system; the beam-divergence angle is self-adaptively controlled in the capturing and tracking process; and the capturing time can be effectively increased while the tracking precision is ensured. Based on the laser communication capturing and tracking system disclosed by the invention, the invention further provides a capturing and tracking method for self-adaptively controlling the beam-divergence angle of the liquid crystal optical phased array; and a laser communication link is established through respective laser communication capturing and tracking systems of two communication sides.

The invention relates to a lifting carrying device. The lifting carrying device comprises a walking mechanism, a lifting mechanism, a floating mechanism and an unlocking mechanism; the floating mechanism comprises a base, a positioning part and balls, the base is fixedly connected to a lifting platform, the positioning part can slide on the bottom surface of a groove, and the balls are located between the positioning part and the bottom surface of the groove; the unlocking mechanism comprises an unlocking assembly and a floating table, positioning holes are formed in the floating table, and the positioning part is clamped on the floating table through the positioning holes. Through the walking mechanism, the lifting carrying device is controlled to walk to a preset position, the lifting mechanism lifts carried equipment such as batteries of electric automobiles to a preset height, and the floating table is generally used for bearing the carried equipment; the positioning part of the floating mechanism can move on the plane within a small range to carry out micro-adjustment on the position where the floating table is located, in this way, the unlocking assembly of the floating mechanism can accurately position the corresponding position, and then the carried equipment can be accurately and rapidly unlocked and replaced.

The invention provides a fuzzy self-adaption PID control based slope sliding preventing method and system and an electric vehicle, and relates to the field of electric vehicles. The method comprises the following steps: 1) determining whether a slope sliding preventing mode performing condition based on the electric vehicle running information; 2) performing a slope sliding preventing mode on thevehicle; treating motor rotating speed system error and system error change as fuzzy controller input variable; and outputting fine parameter adjusting values delta Kp and delta Ki of a rectifying PIDcontroller by a fuzzy algorithm; 3) calculating Kp and Ki in parameters of a rectifying PI adjuster based on the foundation PI parameters Kp0 and Ki0 and the fine adjusting values delta Kp and deltaKi; 4) calculating actual torque for a driving motor by the self-adaptive fuzzy PID algorithm; and 5) driving the motor based on the actual torque required by the motor, and controlling the rotating speed of a motor of the electric vehicle by obtained fuzzy self-adaption PID. According to the method, the motor torque is dynamically adjusted, so that the electric vehicle achieves the slope slidingpreventing function under different slope conditions.

The invention discloses a self-adapting tool clamp for pipeline welding, and relates to the technical field of pipeline welding. The self-adapting tool clamp for the pipeline welding is high in clamping stability and high in adaptability. The self-adapting tool clamp for the pipeline welding comprises a base, supporting columns and mounting blocks, wherein the supporting columns are arranged at two ends of the base; the mounting blocks are arranged on the supporting columns, and a supporting space is formed between the mounting blocks; a propping column for positioning a pipeline is arranged in the supporting space; an oil cylinder is arranged on the base; the propping column is connected to a propping shaft of the oil cylinder through a guide mechanism; the pipeline to be welded can be clamped through a clamping device, so that the stability of the pipeline in welding is greatly improved, and the pipeline welding efficiency is effectively improved; a sliding inclination block is arranged, and thus the pipeline with different diameter can be clamped, and the applicable scope is wide. The self-adapting tool clamp for the pipeline welding is reasonable in structure, novel in design,simple to fix and operate, and stable to fix; the pipeline welding quality is effectively improved; and the self-adapting tool clamp for the pipeline welding is convenient to popularize and use.

The invention relates to a rigidity testing device of a fixed type metal sheet stamping part, relating to a rigidity testing device and solving the problem that no rigidity testing device of the fixed type metal sheet stamping part exists at present. One end of a second screw is fixedly connected with an output shaft of a second motor and parallelly arranged above a beam pipe; the lower end surface of a guide rail is fixed on the upper end surface of the beam pipe arranged below the second screw; a supporting sliding seat is arranged on the beam pipe and connected with the guide rail slilably; a second nut is arranged on the second screw and fixed on the upper end surface of the supporting sliding seat; the upper end surface of a worm and gear mechanism is fixed on the lower end surface of the supporting sliding seat; the upper end surface of a fine-adjustment loading mechanism assembly is fixed on a worm connecting seat of the worm and gear mechanism; the upper end of a pressure sensor is fixedly connected with the lower end surface of a guide rod of the fine-adjustment loading mechanism assembly; and a press head is fixed on the lower end surface of the pressure sensor. The invention can realize movement or rotation with multiple freedom degrees by the press head of the rigidity testing device and accurately measure the rigidity of the metal sheet stamping part.

The invention discloses a multi-functional tunnel operation trolley, which comprises a chassis, a host platform and double movable arms, wherein the host platform is arranged on the chassis and is connected with the double movable arms through hinges; the double movable arms are rigidly connected through two connecting bridges; two movable arm hydraulic oil cylinders which synchronously act are arranged between the host platform and the double movable arms; the two ends of the movable arm oil cylinders are hinged with the host platform and the double movable arms respectively; the end parts of the double movable arms are hinged with a mounting platform; a leveling hydraulic oil cylinder is arranged between the mounting platform and the connecting bridges of the double movable arms; and the mounting platform is provided with a lifting platform, a truck mounted crane and a multidirectional adjusting manipulator. The multi-functional tunnel operation trolley has the technical effects that mounting work of an arching can be finished by only two or three operation staffs, mechanical operation of mounting of the arching can be realized, an I steel arching and a grid arching can be clamped and then lifted to any position in a tunnel, quick mounting is realized, the construction time is saved, the working efficiency is increased and other construction operations are facilitated.

The invention discloses a mounting platform of an unmanned airplane. The mounting platform comprises a gravity center adjustment assembly and a hanging assembly for hanging articles. The gravity center adjustment assembly is connected with a fuselage. The hanging assembly is hung onto the gravity center adjustment assembly. The gravity center adjustment assembly is provided with a plurality of first hanging parts for adjusting the horizontal position of the hanging assembly. The mounting platform is simple in structure and can be applied to the unmanned airplane, wherein the gravity center thereof can be quickly adjusted. Therefore, different articles can be hung onto the hanging assembly. Meanwhile, the mounting platform is good in damping and shock-filtering effect and is particularly suitable for the hanging of heavy articles.

The invention discloses a cavity pump light parameter oscillator of single-ended output. The oscillator comprises a laser pump source, a focusing lens, an input coupling mirror, a laser gain crystal, a diachronic mirror, a non-linear crystal, a first curved surface mirror, piezoelectric ceramic arranged on the non-linear crystal and a second curved surface mirror arranged on a reflected light path of the diachronic mirror. The input coupling mirror, the laser gain crystal, the diachronic mirror, the non-linear crystal and the first curved surface mirror form a laser resonant cavity. The first curved surface mirror, the non-linear crystal, the diachronic mirror and the second curved surface mirror form a signal light resonant cavity. The pump source carries out pumping via the focusing lens, population inversion is formed in a gain medium, laser oscillation is formed in the laser resonant cavity, and an oscillated laser generates signal light and forward and backward idle light via the non-linear crystal. Backward idle light is reflected by the second curved surface mirror and then is coupled and output with forward idle light generated by the non-linear crystal via the first curved surface mirror so as to realize single-ended output of intermediate infrared idle light.

The invention discloses a machine for paving bricks on a pavement, and relates to the technical field of building machinery. Two parallel speed reduction units are arranged on a chassis frame and independently drive crawler wheels to move through gear transmission mechanisms; a plurality of front swing sliding plates are arranged at the front end of the chassis frame; a plurality of rear swing sliding plates are arranged at the rear end of the chassis frame; a paving platform is arranged on the front swing sliding plates and the rear swing sliding plates; the chassis frame is connected with the paving platform through a positioning sleeve in the middle of the rear end of the chassis frame; a leveling device comprises a leveling plate and a lifting mechanism; and a traveling induction controller is arranged on one side of the rear end of the chassis frame and consists of a hanging clamp, a stretching adjustment rod, an induction emitter and a contact induction rod. By the traveling induction controller, the traveling precision of a road paver is realized; due to the front and rear swing sliding plates, a paving mechanism can swing leftwards and rightwards, and over forth-and-back displacement of the paving mechanism can be avoided; the paving precision of pavement bricks is guaranteed; and the pavement suitability of the machine is greatly improved.

The invention discloses a calibration method and system of external parameters of vehicle-mounted cameras. The method comprises the steps of: S1, parking a vehicle at a designated position in a calibration site where a plurality of markers are disposed; S2, controlling each vehicle-mounted camera for image shooting, and then carrying out checking of camera mounting positions and angles on the basis of a principle of inverse perspective transformation; S3, finely adjusting the external parameters of the cameras step by step after checking in a preset adjustment range according to preset step length, and calculating the variance of a measurement result, which is collected and obtained by the cameras after each time of adjustment on the external parameters, and a standard result; and S4, selecting a set of external parameters, which correspond to a minimum value of the variance, as a calibration result. The method improves calibration accuracy of the external parameters of the cameras, can carry out simultaneous calibration of the multiple cameras, is fast and highly efficient, and can be widely applied in an industry of control of the vehicle-mounted cameras.

The invention discloses a multifunctional support trolley for tunnel arches. A scissor lifting table is installed on a trolley platform, general purpose manipulators special for tunnels are installed on two sides of the trolley platform, each general purpose manipulator special for tunnels comprises a telescopic boom, one ends of the telescopic booms are mounted on telescopic boom rotating stands, and the telescopic boom rotating stands are provided with rotating seats and telescopic boom rotating hydraulic cylinders; and one ends of derricking cylinders are installed on the telescopic boom rotating stands, the other ends of the derricking cylinders are installed on the telescopic booms, and manipulators are installed at front ends of the telescopic booms. The multifunctional support trolley has the advantages that installation work of the arches can be finished only by three or four operators, and labor force is saved; the mechanized operation during installation of the arches can be achieved; I-beam arches and grid arches can be lifted to any position in tunnels after being clamped, and arches can be fine adjusted rapidly in all directions; general purpose manipulators special for left and right tunnels work simultaneously, so that rapid installation is facilitated, construction time is greatly saved, and the working efficiency is improved; and the scissor lifting table is installed on the trolley platform, so that other construction operations and tunnel defect treatment besides arch installation are facilitated.

The invention discloses an all-round manipulator special for tunnels. The all-round manipulator special for tunnels comprise a telescopic arm. One end of the telescopic arm is mounted on a telescopic arm rotary support which is provided with a rotating base. The telescopic arm rotary support is provided with a telescopic arm rotary cylinder. One end of a luffing cylinder is mounted on the telescopic arm rotary support, and the other end of the luffing cylinder is mounted on the telescopic arm. A manipulator is mounted at the front end of the telescopic arm. The all-round manipulator special for tunnels has the advantages that the all-round manipulator special for tunnels is mounted on a tunnel arch support trolley, an arch can be mounted by only three or four operators, and labor is saved; mechanical arch erection can be realized, and safety is greatly improved for workers; after I-beam arches and grid arches are clamped, the arches are lifted to any position in a tunnel, the arches can be quickly finely adjusted in front-back, left-right and up-down directions; the left and right all-round manipulators special for tunnels are operated simultaneously, fast mounting can be achieved, construction time is saved greatly, and work efficiency is improved.

The invention provides a fixing rack for supporting an oil pipeline. The fixing rack comprises L-shaped supports, a base arranged between the two L-shaped supports and a supporting device fixed on the base. The supporting device comprises an arc-shaped shell and horizontal plates which are connected to the two ends of the arc-shaped shell respectively, and a cuboid groove is formed in one side of each horizontal plate. The supporting device further comprises a hoop which comprises two semicircular shell bodies connected through a hinge, the hoop is placed in the arc-shaped shell, and the hinge is fixed at the bottom of the arc-shaped shell. The semicircular shell bodies which are connected through the hinge are arranged in the cuboid grooves of the horizontal plates in a sliding mode respectively. The supporting device further comprises a plurality of springs which are arranged on the two sides inside the arc-shaped shell, one end of each spring is connected to the inner wall of the arc-shaped shell, and the other end of the corresponding spring is connected to the outer wall of the corresponding semicircular shell body. According to the fixing rack for supporting the oil pipeline, the springs are connected between the arc-shaped shell and the semicircular shell bodies, and the compressed springs give supporting force to the arc-shaped shell, so that the oil pipeline can be stably placed in the hoop.

The invention relates to a box folding machine of an industrial packing assembly line. The box folding machine is used for automatically folding and shaping different types of paper boxes and comprises a material jacking mechanism for replacing, positioning and conveying a paper box to be folded, a material conveying mechanism for catching the paper box to be folded conveyed by the material jacking mechanism in a vacuum suction manner, a folding and shaping mechanism for receiving the paper box to be folded conveyed by the material conveying mechanism and folding and shaping the paper box along box folding lines, an adjusting mechanism which is connected with the folding and shaping mechanism and is used for adjusting the folding and shaping mechanism to adapt to the box folding sizes of different paper types, an electrical mechanism for respectively controlling operations of the material jacking mechanism, the material conveying mechanism, the folding and shaping mechanism and the adjusting mechanism, and a stander for fixing the material jacking mechanism, the material conveying mechanism, the folding and shaping mechanism, the adjusting mechanism and the electrical mechanism. Compared with the prior art, the box folding machine has the advantages of being high in adaptability to different sizes, accurate in adjustment and positioning, and the like.

The invention relates to an adjustable rotating axle mechanism, which is installed between the seat body and the cover body of an electronic product. The adjustable rotating shaft mechanism comprises a fixing part, a rotating part and an elastic element arranged between the fixing part and the rotating part, wherein, the fixing part and the rotating part can be rotationally assembled into a whole through the elastic element, a groove is arranged on the rotating part, a limiting groove is arranged on the fixing part, and the free end of the elastic element extends into the groove from the limiting groove, and can move in the groove and the limiting groove. During the expanding process of the cover body, the elastic element is taken as the rotating part to promote an auxiliary part rotationally, during the trimming process, the rotating angle of the trimming is controlled through the width of the groove, and simultaneously, the relative rotational speed of the both is controlled through a cushioning mechanism during the trimming. The rotating axle mechanism utilizes the different position relations of the elastic element during the action process to realize the trimming of the expanding angle between the cover body and the seat body after the cover body is expanded, thereby to realize the trimming of the photographing visual angle of a camera, and through expanding the expand e photographing visual angle, images or pictures at the broader angle are obtained.

The invention discloses an experimental method for shearing of a structural surface of a columnar jointing. The method comprises adjusting a rock structural surface to be located in a shearing seam of upper and lower shearing boxes; sleeving screw sleeves to five internally-inserted vertical screws, using plastic films to separate and wrap; vertically moving the internally-inserted vertical screws through adjusting rods, so that the structural surface of the columnar jointing rock is located between the shearing seam; selecting proportional epoxy resin mortar to form epoxy resin mortar; and pouring the epoxy resin mortar into the upper and lower shearing boxes for cooling and solidification. The invention further discloses an experimental apparatus comprises the upper and lower shearing boxes, the internally-inserted vertical screws and the adjusting rods, wherein a bottom of the lower shearing box is provided with vertical screw holes, walls of the lower shearing box are provided with horizontal screw holes, and contacted parts of the adjusting rods and the internally-inserted vertical screws form worm structures. According to the invention, fine adjustment of the rock position can be realized, a surface of the epoxy resin mortar can be always maintain as a plain, a molding is relatively good, problems of rock sinking in cement mortar can be solved, and thus the structural surface of the rock can be easily positioned.

The invention discloses a voice recognition method and system based on incremental word graph re-scoring. The method comprises the steps that: a to-be-recognized voice signal is obtained and acousticfeatures are extracted; a likelihood probability corresponding to the acoustic features is calculated by using a trained acoustic model; a decoder constructs a corresponding decoding network, obtainsa word graph of a state level from the decoding network and obtains a word graph of a word level by updating the word graph and determining the word graph; state-level word graphs of remaining decoding networks are determined, and the determined state-level word graphs are combined with the obtained word-level word graphs to generate a decoded word graph; a target word graph is obtained through afinite-state transcriber merging algorithm according to a re-scoring language model obtained through one-time decoded word graph and small corpus training; and an optimal cost path word graph of the target word graph is obtained, then a corresponding word sequence is obtained, and the word sequence is taken as a final recognition result. According to the invention, the calculation amount of determination after the decoding of a common decoder is finished is reduced, and the decoding speed is accelerated; the word error rate of speech recognition in a specific scene is reduced, and the accuracyis improved.

The invention discloses a mold clamping device. The mold clamping device comprises a base; a rectangular hole is formed in the front surface of the base; first bolts are respectively arranged on two sides of the base; the ends of the first bolts penetrate through the side surface of the base, and extend into the base; a slide plate is arranged in the base, and is provided with chutes; two clamping plates are arranged on the slide plate; the clamping plates are positioned in the chutes, penetrate through the top of the base, and extend above the base; and one sides, near the inner wall of the base, of the clamping plates are in threaded connection with the ends of the first bolts extending into the base. The mold clamping device can clamp different molds through setting first grooves to widen the application range, can move the clamping plates left and right through setting the first bolts to conveniently mount and clamp the molds, and can move the clamping plates up and down through setting second bolts to achieve the fine adjustment effect of the molds and convenience for machining.