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32results about How to "Guaranteed disturbance" patented technology

Relative navigation close range tracking method and system for space noncooperative target capturing

ActiveCN108381553ARealize autonomous relative navigationReal-time plan motion pathProgramme-controlled manipulatorToolsKinematics equationsJoint spaces
The invention provides a relative navigation close range tracking method and system for space noncooperative target capturing. According to the relative navigation close range tracking method and system for space noncooperative target capturing, a kinematical equation of a free-floating space robot system is utilized to deduce and obtain a path planning method for a mechanical arm capturing a moving target, the relative speed and relative posture of the tail end of the mechanical arm and the target are taken as input, joint angle commands controlling the mechanical arm to move can be calculated and obtained, so that capturing operations of the mechanical arm on the moving target can be realized. By means of the relative navigation close range tracking method, in the process of close rangerelative navigation of a space robot on the moving noncooperative target, path planning for the relative position and posture of the tail end of the mechanical arm and the target and continuous inverse kinematics solution from Cartesian space to mechanical arm joint space can be independently realized, and especially for redundant mechanical arms, posture undisturbed planning for a base seat relative to inertial space can be realized.
Owner:BEIJING INST OF SPACECRAFT SYST ENG

Static sounding type deep soil samplers

InactiveCN104975593AEliminate the need for drillingReduce workloadIn situ soil foundationCombined useThin walled
The invention provides two static sounding type deep soil samplers. According to each static sounding type deep soil sampler, a main force bearing shaft is arranged inside a cylinder structure composed of a shell, a sampling tube and a tube shoe, the lower end of the main force bearing shaft is connected with a soil expanding cone head, a steel sheet and an electric ring are arranged between the main force bearing shaft and the shell, and the steel sheet and the elastic ring are clamped in an annular groove. According to the first static sounding type deep soil sampler, the annular groove is formed in the inner surface of the shell, an annular limiting groove is formed in the main force bearing shaft, and the main force bearing shaft is sleeved with an unlocking component composed of a thin-walled pipe and a control bar. According to the second static sounding type deep soil sampler, the annular groove is formed in the main force bearing shaft, an annular limiting groove is formed in the inner surface of the shell, and the main force bearing shaft is sleeved with a thin-walled pipe serving as an unlocking component. The two static sounding type deep soil samplers are used in combination with static sounding penetration equipment, a soil sample buried deep underground can be taken out rapidly under the condition that drilling is not needed; the static sounding type deep soil samplers have the advantages of being simple in structure, convenient and fast to use, capable of saving labor and low in cost; the disturbance of the water pressure on the soil sample can be reduced.
Owner:田庄

Fixation device and method for in-situ monitoring of floating plant root system

The invention provides a fixation device and a method for in-situ monitoring of a floating plant root system, which belong to the technical field of plant physiology and ecology. The fixation device comprises a box body, wherein the box body is an opaque hollow column which comprises a top panel, side walls and an opened lower end; the top panel is equipped with at least one root canal hole; and shape and size of the root canal hole are adapted to the shape and the size of a scanner root canal, and the root canal hole is used for insertion of the scanner root canal. The fixation device is used for the in-situ monitoring of the floating plant root system, is simple in structure and convenient in disassembly and assembly, can reduce sampling cost and measurement errors without interfering in normal plant growth or destroying the plant root system, and realizes the automatic, continuous and real-time monitoring of the floating plant root system.
Owner:RES INST OF FORESTRY NEW TECH CHINESE ACAD OF FORESTRY

Soil remediation system and method based on combined technology

The invention discloses a soil remediation system based on a combined technology. The soil remediation system comprises a soil source conveying unit, a soil source crushing unit, an iron material adsorption unit, a soil source screening unit, a stone conveying unit, a thermal volatilization unit, a chemical cleaning precipitation unit, a dehydration unit, an air drying unit, a faeces conveying unit, a sterilization and deodorization unit, a soil and fertilizer mixing unit and a clean soil source conveying unit. According to the soil remediation system, the combined technology of physical remediation, chemical remediation and fertilizer adding treatment is adopted, and the problems that soil desertification is severe and nutrients are insufficient are further solved under the condition that soil is sufficiently remediated; a cleaning liquid recycling module has a stirring function as well, so that cost is reduced, and equipment space is decreased; disturbance of waterflow in a filter screen zone is guaranteed during the recycling process of the cleaning liquid recycling module, and the problem that a filter screen is liable to block is solved; and disturbance for bottom sediment is effectively inhibited through the cleaning liquid recycling module, and a recycled cleaning liquid does not contain soil impurities.
Owner:SHAOXING ENVIRONREM ENVIRONMENTAL TECH CO LTD

Array impact structure based on circular truncated cone and cylindrical protrusion

PendingCN113374546AReduce flow lossTo achieve the purpose of strengthening heat transferMachines/enginesEngine componentsTarget surfaceEngineering
The invention discloses an array impact structure based on a circular truncated cone and cylindrical protrusion, and belongs to the field of engine turbines. The array impact structure comprises an air inlet cavity, an impact plate and an impact target plate, and an array circular truncated cone and cylindrical protrusion and a plurality of air film holes which are arranged on the impact target plate; the circular truncated cone and cylindrical protrusion and impact holes in the impact plate are coaxially and oppositely arranged; the plurality of air film holes are formed in the downstream of the array circular truncated cone and cylindrical protrusion located on the impact target plate along the flow direction; the circular truncated cone and cylindrical protrusion comprises a circular truncated cone and a cylinder; the large end of the circular truncated cone serves as a bottom surface and is fixed to the impact target plate in parallel; and the cylinder is coaxially fixed to the small end face, located above, of the circular truncated cone. Compared with cylindrical protrusion target plate impact cooling, the array impact structure based on the circular truncated cone and cylindrical protrusion disclosed by the invention has the advantages that: the heat exchange of the target surface can be increased to a certain extent; the flow loss is reduced; and the area of a region with stronger heat exchange on the target surface is increased.
Owner:NORTHWESTERN POLYTECHNICAL UNIV +1

Plant anti-frosting method

ActiveCN105432387AImprove the effectRaise the level of influencePlant protectionAirflowEngineering
The invention discloses a plant anti-frosting method. The plant anti-frosting method comprises main anti-frosting devices and auxiliary anti-frosting devices. The main anti-frosting devices and the auxiliary anti-frosting devices each comprise a vertical column and an axial flow fan arranged on the top of the vertical column to provide wind power. The height of the axial flow fans of the main anti-frosting devices ranges from 6 m to 15 m, and the height of the auxiliary anti-frosting devices ranges from 4 m to 6 m. The transverse horizontal distance between the two main anti-frosting devices ranges from 10 m to 25 m. It is guaranteed that the height difference H1 between the vertical columns of the auxiliary anti-frosting device and the main anti-frosting devices ranges from 5 m to 10 m. Meanwhile, the auxiliary anti-frosting devices have the lifting amplitude with the height difference of H1, airflow within the height range of 1 m to 5 m can be disturbed, then the effect of the plant anti-frosting system is enhanced, and the influence degree of the anti-frosting effect of the plant anti-frosting method on plants is improved. It is guaranteed that airflow within the 5 m range of the fans and at the 3 m height around the range can be disturbed. Anti-frosting blind regions are eliminated. In addition, the plant anti-frosting effect is improved, the growth vigor and quality of the plants are improved, and the survival rate of the plants is increased.
Owner:山东天汇光年无人机科技有限公司

Undisturbed soil sampler

The invention provides an undisturbed soil sampler. The undisturbed soil sampler comprises a vertical separator plate and two semicircular drilling pipes having an edge, a circle soil retaining plateis fixed at the bottom of the vertical separator plate, an internal diameter of the semicircular drilling pipes is greater than a diameter of the circle soil retaining plate by 1-3 mm, a first supporting seat and a second supporting seat are respectively arranged at two sides of the vertical separator plate, same semicircular grooves are respectively arranged on the first supporting seat and the second supporting seat close to one side of the vertical separator plate along a vertical direction, the semicircular groove is greater than the diameter of the circle soil retaining plate, the first supporting seat is welded with the vertical separator plate, and the vertical separator plate and the second supporting seat are cooperated with hooks through hanging slots, so that a groove which is concentric with the soil retaining plate is formed by two semicircular grooves. The undisturbed soil sampler uses cooperation of the semicircular drilling pipes having the edge and the soil retaining plate, a complete soil sample can be kept while sampling, the original soil sample after observation and testing is restored, and the destroy of the soil sampler on lawn is reduced.
Owner:BEIJING FORESTRY UNIVERSITY

Motor and its control method

The invention provides a motor and a control method thereof. The motor comprises a shell, a stator and a rotor, wherein the stator is arranged in the shell, the rotor is arranged at a radial inner side of the stator, the shell is provided with a rear end cover, a shaft end groove is formed in the rear end cover, the rotor is provided with an output shaft, a rear end of the output shaft is insertedinto the shaft end groove, the motor also comprises a play-prevention device and a play detection device, the play-prevention device is provided with an electromagnet and a permanent magnet, the electromagnet is arranged at the bottom of the shaft end groove, the permanent magnet is arranged at a rear end of the output shaft, and the play detection device is configured to detect displacement between a real-time position and an initial position of the output shaft and control the size and the direction of a current of the electromagnet according to the displacement so as to further control thesize of an acting force between the electromagnet and the permanent magnet and maintain the output shaft at the initial position. When axial display occurs in the output shaft, the current supplied to the electromagnet is controlled, the permanent magnet is pushed to drive the output shaft to move towards an opposite direction of an axial play direction, axial play is generated, and the rotationof the output shaft cannot be affected.
Owner:浙江江宇电机有限公司

Motor and control method thereof

The invention provides a motor and a control method thereof. The motor comprises a shell, a stator and a rotor, wherein the stator is arranged in the shell, the rotor is arranged at a radial inner side of the stator, the shell is provided with a rear end cover, a shaft end groove is formed in the rear end cover, the rotor is provided with an output shaft, a rear end of the output shaft is insertedinto the shaft end groove, the motor also comprises a play-prevention device and a play detection device, the play-prevention device is provided with an electromagnet and a permanent magnet, the electromagnet is arranged at the bottom of the shaft end groove, the permanent magnet is arranged at a rear end of the output shaft, and the play detection device is configured to detect displacement between a real-time position and an initial position of the output shaft and control the size and the direction of a current of the electromagnet according to the displacement so as to further control thesize of an acting force between the electromagnet and the permanent magnet and maintain the output shaft at the initial position. When axial display occurs in the output shaft, the current supplied to the electromagnet is controlled, the permanent magnet is pushed to drive the output shaft to move towards an opposite direction of an axial play direction, axial play is generated, and the rotationof the output shaft cannot be affected.
Owner:浙江江宇电机有限公司

Motor and its control method

The invention provides a motor and a control method thereof. The motor comprises a shell, a stator and a rotor, wherein the stator is arranged in the shell; the rotor is arranged at the radial inner side of the stator; the shell is provided with a rear end cover and a shaft end groove is arranged in the rear end cover; the rotor is provided with an output shaft and the rear end of the output shaftis inserted into the shaft end groove; the motor further comprises a displacement preventing device provided with a primary and a secondary and a displacement detecting device; the primary is arranged on the peripheral wall of the shaft end groove and the secondary is arranged on the rear end of the output shaft; and the displacement detecting device is used for detecting the displacement betweenthe real-time position and the initial position of the output shaft so as to control the primary according to the displacement and keep the output shaft at the initial position. The motor has the advantages that by means of the displacement detecting device and the displacement preventing device, when the axial displacement of the output shaft is detected by the displacement detecting device, a current supplied to the primary is controlled and the like to drive the output shaft to move towards the opposite direction of the axial displacement direction by the secondary, so that the axial displacement is prevented, and in particular, the rotation of the output shaft is not affected.
Owner:浙江江宇电机有限公司

A kind of plant anti-frost method

The invention discloses a plant anti-frosting method. The plant anti-frosting method comprises main anti-frosting devices and auxiliary anti-frosting devices. The main anti-frosting devices and the auxiliary anti-frosting devices each comprise a vertical column and an axial flow fan arranged on the top of the vertical column to provide wind power. The height of the axial flow fans of the main anti-frosting devices ranges from 6 m to 15 m, and the height of the auxiliary anti-frosting devices ranges from 4 m to 6 m. The transverse horizontal distance between the two main anti-frosting devices ranges from 10 m to 25 m. It is guaranteed that the height difference H1 between the vertical columns of the auxiliary anti-frosting device and the main anti-frosting devices ranges from 5 m to 10 m. Meanwhile, the auxiliary anti-frosting devices have the lifting amplitude with the height difference of H1, airflow within the height range of 1 m to 5 m can be disturbed, then the effect of the plant anti-frosting system is enhanced, and the influence degree of the anti-frosting effect of the plant anti-frosting method on plants is improved. It is guaranteed that airflow within the 5 m range of the fans and at the 3 m height around the range can be disturbed. Anti-frosting blind regions are eliminated. In addition, the plant anti-frosting effect is improved, the growth vigor and quality of the plants are improved, and the survival rate of the plants is increased.
Owner:山东天汇光年无人机科技有限公司

A dance shoe for different foot widths

ActiveCN110226799BSolve the problem of buying dancing shoes that are not suitable for the width of your feetGuaranteed disturbanceSolesActivated carbonShoe laces
The invention discloses a dancing shoe suitable for different foot widths. Each shoe comprises a shoe body. The outer surface of the shoe body is fixedly connected with the connecting layer. The connecting layer and the stretching layer are fixedly connected. A front heel and a rear heel are respectively arranged on the front side and the rear side of the stretching layer. An anti-abrasion pad isarranged at a welt of the shoe body. A plurality of shoelace holes are formed in the middle of the shoe body. An activated carbon adsorption layer and a warm-keeping layer are arranged in the shoe body. The warm-keeping layer is fixedly connected with the shoe body. The stretching layer comprises a containing layer and a soft rubber layer. A stretching device composed of a connecting plate, a connecting rod, a rotating block, a spring and other elements is arranged in an inner cavity. An accommodating layer is arranged on the sole. Rotating plates are arranged in the accommodating layer. The rotating plates are rotatably connected with the bulges in the accommodating layer. The rotating plates are rotatably connected with one another. A screw block with a slot is arranged in the soft rubber layer. The rotating plates rotate to adjust the width of the sole under the transmission action of the connecting rod and the rotating block, so that the dancing shoe can be suitable for different foot widths.
Owner:章文春

Impingement cooling structure based on array annular protruding target plate

The invention relates to an impingement cooling structure based on an array annular protrusion target plate, and belongs to the field of engine turbines. The impingement cooling structure comprises an air inlet cavity, an impingement plate, the impingement target plate, array annular protrusions and a plurality of air film holes, wherein the array annular protrusions and the air film holes are arranged on the impingement target plate. The annular protrusions are located between adjacent impingement holes in the flow direction, and the spanwise distance and the flow direction distance of the array annular protrusions are consistent with those of the impingement holes. The air film holes are located in the downstream positions of the array annular protrusions on the impingement target plate in the flow direction. Cooling air is perpendicularly injected to the impingement target plate through the impingement holes, passes through the annular protrusions after being turned over by 90 degrees on the impingement target plate, flows to the downstream air film holes and flows out of the air film holes for external cooling. The heat exchange area is increased through the array annular protrusions, and therefore the purposes of increasing the heat exchange amount and enhancing the heat exchange effect are achieved. The annular protrusions can conduct secondary disturbance on fluid in the flow direction, and therefore disturbance is enhanced, and heat exchange is enhanced.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
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