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464results about How to "Logical" patented technology

Vehicle body dip angle adjusting unit, oil gas suspension mechanism and mobile crane

The invention relates to an automatic leveling oil gas suspension mechanism, which comprises at least two pairs of suspension oil cylinders (12), a vehicle body dip angle adjusting unit (17), a vehicle body traverse dip angle sensor and a control unit, wherein each suspension oil cylinder is provided with a vehicle body dip angle adjusting unit with a balanced oil cylinder (10) correspondingly; and one cavity of the balanced oil cylinder is connected to an oil tank (5) and a leveling operating oil source by a first one-way damper valve (8) and an electronic control switching valve (14), and the other cavity of the balanced oil cylinder (10) is connected to a rodless cavity of each suspension oil cylinder by an electronic control lockup valve (14) and a second one-way damper valve (9). In addition, the invention also provides a mobile crane with an automatic leveling oil gas suspension mechanism. The automatic leveling oil gas suspension mechanism realizes the function of dynamic leveling of various roads, particularly traverse rampways, of the mobile crane effectively, and is simple in operation and high in logicality; and the operation is completed automatically by the control unit, so the running safety is improved obviously, and accidents such as overturn and the like are prevented from occurring.
Owner:ZOOMLION HEAVY IND CO LTD

Laser radar two-step calibration method based on calibration field

ActiveCN107167790ABreaking high flatness requirementsBreak flatness requirementsWave based measurement systemsDistance correctionTheodolite
The invention discloses a laser radar two-step calibration method based on a calibration field. The method comprises steps of establishing a calibration field; carrying out calibration; preparing angle calibration; networking a theodolite; scanning a laser radar; measuring the theodolite; establishing an angle correction equation; calculating an angle correction coefficient; establishing a base line field; measuring the laser radar; measuring the theodolite; establishing a distance correction equation; and calculating a distance correction coefficient. According to the invention, rapid calibration of the laser radar is achieved without taking a precisely designed and processed calibration device as a calibration standard; a problem of too high requirements on a test place, the calibration field and the calibration device in the normal method is solved; through cooperation of a rotation bench, the whole test process is achieved, the test difficulty level is reduced and a difficulty in ensuring precision of full field-of-view angle correction in the normal method is solved; and through the test of the calibration field and the base line field step by step, effects of correcting separation distances in a calibration model are achieved and disadvantages in mutual coupling of distance parameters and angle parameters in the normal method are overcome.
Owner:BEIJING INST OF CONTROL ENG

Self-adaptive control method for diagonal gait of four-footed robot

The invention discloses a self-adaptive control method for diagonal gait of a four-footed robot, which is used for self-adaptively controlling the walking of the four-footed robot in the nonstructural terrain with the diagonal gait. The self-adaptive control method bases on a fuzzy reasoning learning method and a foot trajectory real-time correction method and takes the diagonal gait as the motion mode so as to comprehensively control a robot body to adapt for the nonstructural environment. The gait planning is carried out on the environmental information collected by the sensor through the fuzzy reasoning learning method; the stability judgment is carried out on the gait planning information; if the planned four-footed robot has stable diagonal gait, the joint corner information is sent to a control system; if not, the supporting time of the diagonal feet is corrected by the foot trajectory real-time correction method so that the four-footed robot has better stability when walking under the changed gait in the nonstructural terrain. The self-adaptive control method is used for correcting foot trajectory planning and walking stability under changed gait when the four-footed robot walks diagonally in a dynamic way, thus realizing the self-perception, self-correction and self-adjustment of the four-footed robot.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Millimeter wave band broadband cylinder conformal 4*4 microstrip antenna as well as design method thereof

A millimeter wave band broad band column conformal 4*4 micro-band antenna and design method thereof relate to an antenna and design method thereof. For the purpose that the column conformal4 micro-band antenna for aviation, spaceflight, ship and surface car can stably work under frequency of 35GHz, the antenna is equipped with a sheet sticking layer(5), a first medium layer, a second medium layer, a middle floor(10) equipped with a H-shape groove(7), and a feeding network layer(6). The design method includes: designing a planar 4*4 micro-band antenna array with the H-shaped groove (7)in CST through coupling feeding micro-band antenna units by utilizing the H-shaped groove(7), drawing columns with different radius and different material, reducing column type carriers(2) with different thickness by utilizing ''substrate'' function, stretching the two medium layers, the feeding network layer(6), the middle floor(10) and the sheet sticking layer(5) to the column type carriers(2), fetching intersection of the two by utilizing ''intersect'' to conformally arrange the planar array on the column type carriers(2). The micro-band antenna for aviation, spaceflight, ship and surface car can stably work under frequency of 35GHz, and design method is simple.
Owner:HARBIN INST OF TECH

Method for controlling synchronous degradation of each layer of co-extrusion composite film by utilizing same biological base

The invention discloses a method for controlling the synchronous degradation of each layer of a co-extrusion composite film by utilizing the same biological base. Aiming at the co-extrusion composite film which is in three layers or more than three layers, a biological active additive 'EcoPure' is used as the biological base. The method is characterized by comprising the following steps of: calculating a weight proportion relationship between carbon contents of each layer of the co-extrusion composite film first, then determining the addition concentration of the biological base of each layer according to the weight proportion relationship between the carbon contents of each layer in extruded polymer of each layer before the preparation, and making the degradation rate of each layer of the co-extrusion composite film be accordant. The method disclosed by the invention has the contribution of having a predictable control ability for the biological degradation process and the degradation rate of multi-layer co-extrusion composite film which is composed of different polymers; and by balancing the concentration of the biological base, the biological degradation rate which is suitable for the final processing environment is provided, and the appearance, the function and the physical and mechanism performance of a product before being discarded are ensured to be unchanged.
Owner:圣厦药品食品包装新材料(昆山)有限公司

Real-time calculation method of abrasion loss of disc cutter of hard rock tunnelling boring machine

A real-time calculation method of abrasion loss of a disc cutter of a hard rock tunnelling boring machine (TBM) provided by the invention relates to a data processing method particularly suitable for specific application. From the aspect of mechanical analysis of hard rock hobbing cutter rock breaking, a relationship between a cutting coefficient and a hobbing cutter rock breaking arc length is established, and the real-time calculation method of abrasion loss of the hobbing cutter in the tunneling process of a hard rock TBM is realized through adoption of tunneling parameters automatically acquired in the work process of the hard rock TBM. The real-time calculation method comprises the steps: performing real-time calculation of an equivalent hobbing cutter cutting coefficient and a knifing of a TBM cutter; performing real-time calculation of an angle with respect to the equivalent hobbing cutter rock breaking arc length; performing real-time calculation of an equivalent hobbing cutter working radius; performing real-time determination of the abrasion loss of the equivalent hobbing cutter in the tunneling process of the hard rock TBM; and performing real-time determination of the actual abrasion loss of a hobbing cutter at any one cutter spacing on the hard rock TBM cutter. According to the invention, the real-time calculation method helps to make up the deficiencies in the prior art that abrasion of a hobbing cutter of the hard rock TBM in the tunneling process cannot be directly detected in real time and the abrasion loss of the hobbing cutter of the hard rock TBM in the tunneling process cannot be reflected.
Owner:MILITARY TRANSPORTATION UNIV PLA

Three-dimensional mechanical in-process model sequential modeling method based on removal feature recognition

The invention relates to a three-dimensional mechanical in-process model sequential modeling method based on removal feature recognition, which mainly aims to solve the technical problems of repetitive work and big application limitation in the prior art. In the method, first of all, the removal features are classified into boundary feature, inset feature, communication feature, thread feature and loop feature. On the basis of the classification, the method includes the steps of: 1) producing a workblank; 2) judging whether a next process is necessary, and if yes, entering the third step; 3) recognizing the removal features in the process, which includes selecting a feature type and recognizing the feature; and 4) modeling the in-process models. All the in-process models are assembled to form a whole process model and are organized by a standard structure of a process all-information model. The method makes full use of the geometrical characteristics of the original components, solves the problem of high quality requirement to the original component model design in three dimensional process design, speedily creates the in-process models according to the practical mechanical processing sequence and improves the overall efficiency of the process design system.
Owner:SHENYANG AEROSPACE UNIVERSITY

Factory intelligent scheduling method

ActiveCN105302096ARealize human-computer friendly interactive application and experienceReal, timely and reliable transmissionTotal factory controlProgramme total factory controlSmart transducerIntelligent sensor
The invention discloses a factory intelligent scheduling method which mainly comprises the following steps that equipment state information and factory environmental information are acquired via intelligent sensors; the equipment state information and the environmental information are respectively transmitted to corresponding PLC data acquisition stations; each PLC data acquisition station divides data into flow scheduling record data, key equipment control record data, equipment operation state data and key technological index data to be uploaded to a data center through data preprocessing; the data center performs extraction of knowledge rules so as to obtain a knowledge rule base formed by flow scheduling rules, equipment control rules and abnormity processing rules; and the corresponding rules are respectively read via an equipment intelligent control algorithm and a flow intelligent scheduling algorithm so that optimized configuration and scheduling of resources in an intelligent factory can be realized. Upgrading and reconstruction of conventional factory production modes can be realized so that production efficiency can be enhanced, production energy consumption can be reduced, environmental pollution can be reduced and production cost can be saved, and thus green production can be truly realized.
Owner:HUNAN CHAIRMAN IOT INFORMATION TECH CO LTD

Omnidirectional intelligent mobile equipment positioning and navigation method based on laser ranging

The invention discloses an omnidirectional intelligent mobile equipment positioning and navigation method based on laser ranging, which comprises the following steps: installing a sensor on an AGV, and measuring the distance from the center of the sensor to the center of the AGV; installing a laser reflector in the AGV operating site; setting the initial origin and zero angle of the sensor, usinga navigation controller to collect the real-time pose information of the sensor and filter it to obtain the current pose information of the sensor; obtaining the current pose information of the body center of the AGV through a conversion formula; and when the AGV performs patrol running, timely solving the deviation of the current pose information of the body center of the AGV from the target path, and timely adjusting the angular velocity and the yaw angle of the AGV according to the deviation to complete the navigation. The method arranges the sensor and the laser reflector, solves the deviation of the AGV pose and the target path in real time, and adjusts the AGV according to the deviation in real time, thereby realizing the flexible setting of the AGV running route and accurate navigation, and making up defects of the traditional laser navigation AGV positioning method that the path is single and the reliability is poor.
Owner:BEIJING SATELLITE MFG FACTORY

Component sorting method and sorting device for industrial production line

The invention relates to a component sorting method and sorting device for an industrial production line. The component sorting method and the sorting device classify and sort components in a counting way, the cost is reduced, and the working stability of equipment is improved. Moreover, the component sorting method and the sorting device are convenient to use andhave high cost performance, and the extended function is liable to implement. The component sorting method and the sorting device are characterized in that a plurality of equally-spaced channels are arranged on one side of a production line conveying belt along the conveying direction, and actuating mechanisms used for pushing the components into the channels and corresponding to allchannels one to one are arranged on the other side of the production line conveying belt and are mentioned in the following order: SC1, SC2, SC3...SCn; component identification equipment used for identifying the types of the components is arranged at the head end of the production line conveying belt, and the first channel is closed to the component identification equipment; a photoelectric sensor or a proximity switch type sensor used for detecting the number of the components is arranged on the front side of each channel, and the photoelectric sensors or the proximity switch type sensors are separately named PS1, PS2, PS3...PSn; and the photoelectric sensors or the proximity switch type sensors correspond to the actuating mechanisms, and the corresponding different identification and classification results are named C1-Cn.
Owner:BOHAI UNIV
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