30results about How to "Reduce shaking effect" patented technology

The invention relates to a method for regulating and controlling a posture of a spacecraft by the flow velocity and an actuating mechanism thereof and belongs to the field of control to the posture of the spacecraft. The method comprises the following steps that: according to a difference value of a current posture and a desired posture, a three-axis control moment vector required by the spacecraft is obtained, and according to a principle of the momentum moment, a relation between the three-axis control moment vector and the variation of a liquid fuel flowing angular velocity is obtained; according to the working principle of ring-shaped pipe liquid angular momentum exchange equipment, a relation between the liquid fuel flowing angular velocity and the change rate of a velocity vector inthe tangential direction of a pipe when liquid fuel flows is obtained; according to corresponding generated required conditions, the power of the pressure pump is controlled to apply work to the liquid, so that the flow velocity of the liquid is changed, and thus, the angular momentum H of a mass center of the spacecraft is changed and the posture of the spacecraft 10 is changed; and the changed posture is measured by a sensor and is compared with the desired posture and the steps are circularly repeated from the beginning of the step 1. The actuating mechanism for regulating and controlling the posture of the spacecraft by the flow velocity, which is used for implementing the method disclosed by the invention, comprises a liquid filled ring-shaped pipe, the pressure pump, an oil storage tank, a valve, a liquid outlet connecting pipe, a liquid return connecting pipe and a control mechanism.

The invention discloses a movable wind-resistant advertising board and a control method thereof. The movable wind-resistant advertising board comprises a support and a frame, a servo motor is embeddedin the inner top end of the support, a rotary disc is in transmission connection with the top of the servo motor, positioning plates are symmetrically welded on the two outer walls of the rotary disc, the bottom of the frame is fixedly clamped with a clamping seat welded on the rotary disc through a connecting piece, an aerovane is fixed to the top of the frame through a bolt, an AVR central control unit is fixed to the bottom of the frame through a bolt, and the front surface of the frame is fixedly screwed with a mounting plate through a positioning bolt. The movable wind-resistant advertising board has the advantages that the aerovane is used for collecting wind force information, and the servo motor is controlled to rotate and drive the frame to rotate within a specific range, which changes the angle between the frame and the wind blowing direction, so that the contact area between the advertising board and the wind direction is reduced, the shaking effect caused by the wind forceon the advertising board is reduced, and the use safety of the advertising board is improved.

The invention relates to the new energy technical field, especially relates to a new energy power generation system, and specifically relates to a new energy power generation system that applies in sea and lake places; the new energy power generation system employs a balance mechanism to stabilize the whole structure, adds anti-storm wave performances of a waterborne house, and reduces shaking influences caused by people activities on the whole structure. The wind power generation system is employed so as to provide environmental protection energy saving effects; in addition, the new energy power generation system can synchronously rise with the water level, can automatically elevate via self-control, and adds the flexibility of the waterborne house; the new energy power generation systemis simple in structure, reasonable in design, low in making cost, high in stability, easy to use, good in anti-storm waves and earthquake-proof performance, energy saving and environmental protective,and can freely move in water, thus providing conveniences for promotion and application.

The invention relates to the technical field of health information, particularly to a method for judging a falling state in an action. The method comprises the following steps: detecting human body action state data through an acceleration sensor; wherein the data comprise x-axis acceleration ax, y-axis acceleration ay, z-axis acceleration az, x-axis angle x1, y-axis angle y1, z-axis angle z1 andtime information, calculating resultant acceleration smv, and sequentially carrying out angle judgment, acceleration judgment and time judgment to judge whether an object is in a falling state or not.The sensor is mounted in the center of the chest; the chest belongs to the central axis of a human body; the influence of left-right and front-back shaking can be reduced to a certain extent; in addition, contact with other parts of the body is little in the advancing process, the adverse effect of the device on walking of the elderly is effectively avoided, and normal behaviors and falling behaviors of the elderly can be judged with high accuracy by sequentially conducting angle judgment, acceleration judgment and time judgment. The method has important significance for promoting healthy life of the elderly.

The invention discloses a rail train, a vehicle-mounted controller and a speed measurement method and device of the rail train, which are applied to the field of rail trains and used for improving theprecision and accuracy of train speed measurement. The speed measurement method of the rail train comprises the steps of when a rotary transformer installed at the shaft position of a traction motoris driven by the motor to rotate, outputting an analog voltage signal in real time; converting the analog voltage signal into a real-time digital voltage signal; converting the digital voltage signalinto a real-time angular position and a rotation turn number signal; and calculating the current speed of the train according to the real-time angular position and the rotation turn number signal.

The invention discloses a waste collecting-slitting-paper cutting machine. The waste collecting-slitting-paper cutting machine comprises a base, a motor, fixing blocks and a connection rod; a fan is fixedly installed on the base; an electric box is fixed to the left side of the fan; a waste collecting box is arranged on the electric box, and the left side of the lower portion of the waste collecting box is provided with a storage table; a finished product winding shaft is installed below the bottom of a finished product storage table; slide blocks are externally provided with slide grooves, and a slitting shaft is connected with the middles of the slide grooves; the lower portion of a slide rod is connected with a push plate through a hydraulic cylinder, and a quality inspection table is arranged below the push plate; and a paper cutting shaft is fixedly installed at the bottom of the connection rod. The waste collecting-slitting-paper cutting machine is provided with a cutting machine, a splitting machine and the quality inspection table, thus, the steps of splitting, cutting and quality inspection in the whole label production process are successively connected, the whole label production work is a continuous process, the efficiency of the whole label production work is greatly improved, and the time wasted in different procedure processes is decreased.

The invention discloses a water level monitoring device and a water level monitoring method. The water level monitoring device comprises measuring equipment, a gyroscope and processing equipment, the measuring equipment is used for scanning a junction point of a water level and a target object, obtaining a point cloud picture of an initial scanning surface and transmitting the point cloud picture of the initial scanning surface to the processing equipment; the gyroscope is used for detecting current inclination angle information of the measuring equipment and transmitting the current inclination angle information to the processing equipment; and the processing equipment is used for acquiring a point cloud picture of a real scanning surface corresponding to the point cloud picture of the initial scanning surface according to the current inclination angle information, and acquiring the height of the water level liquid level according to the point cloud picture of the real scanning surface. The laser radar is used as measuring equipment, and the measuring precision is high.

The invention relates to a remote sensing technology based photovoltaic-cell spraying unmanned aerial vehicle which comprises an unmanned aerial vehicle body, wing arms and wings. A signal receiving module arranged in the unmanned aerial vehicle body is used for receiving remote signals, a pesticide box is fixed under the unmanned aerial vehicle body, spray nozzles and a camera are mounted at thebottom of the pesticide box, each spray nozzle is provided with an electromagnetic valve used for receiving the remote signals, vertical pesticide tubes are evenly distributed in the pesticide box, bottoms of the pesticide tubes are mutually connected to form a liquid pesticide collecting chamber, spraying mouths are arranged in the bottom of the liquid pesticide collecting chamber and are connected with the spray nozzles, a pressure pump used for receiving the remote signals is arranged in the pesticide box, and the unmanned aerial vehicle is further provided with a photovoltaic cell assembly. By the arrangement, shaking of the unmanned aerial vehicle due to inertia of liquid pesticide during the flight of the unmanned aerial vehicle can be guaranteed, so that balanced remote control is realized, and flight endurance can be improved through the photovoltaic cells.

The invention discloses a sterile circulating ventilation device for an intensive care unit and a circulating ventilation method. The sterile circulating ventilation device comprises a connecting base and a disinfection filtering net plate, wherein a driving motor is arranged at the top of the connecting base; embedded sliding blocks are arranged on the surface of a first reciprocating lead screw and the surface of a second reciprocating lead screw; a supporting bottom plate is arranged at the tops of the embedded sliding blocks; a suction windbox and a mounting chamber are arranged at the top of the supporting bottom plate; an air supply pipe is arranged in the mounting chamber; a branch pipe is arranged on the side surface of the air supply pipe; a T-shaped alarm valve cock is arranged at the top of the branch pipe; one end of the air supply pipe is connected to a preparation branch pipe; and a push-pull cylinder is arranged on the top surface of the side, away from the driving motor, of the connecting base. By arranging the alarm valve cock, when an exhaust air duct of the device is blocked, warning light and warning buzzing can be given out in time, medical workers are reminded of coming to maintain the device, and it is guaranteed that ventilation cycle work of the device is normally conducted.

The invention provides a crane, a crane tower arm control method and a crane tower arm control device and relates to the technical field of engineering machinery. In the crane, a telescopic coil cylinder is provided with a distance sensor used for detecting the telescopic length of the telescopic oil cylinder; meanwhile a tower arm winch is provided with a turn number detection mechanism used fordetecting the number of turns of the winch so that a controller can be used for acquiring the actual length of a main arm and the actual length of a rope unwound by the winch and obtaining the targetlength of the rope unwound by the winch by calculating the actual length of the main arm; the rope winding or rope unwinding speed of the winch is regulated according to a comparison result of the target length of the rope and the actual length of the rope so that the actual included angle between the main arm and the tower arm is kept within a preset included angle range; coordinated regulation is realized by regulating length relationship between the tower arm and the main arm; the control precision is relatively high, thus good posture of a hoisting arm in a lifting process or a descendingprocess is maintained; rollover of the crane is effectively prevented; and better reliability of the crane is realized.

The invention discloses cutting equipment convenient to operate. The cutting equipment comprises a cutting blade, a driving part used for driving the cutting blade to rotate, a cutting table, a clamping device arranged on the cutting table, a dustproof device with a dustproof effect after cutting is carried out and a pressing rod device used for pressing of the driving part and the cutting blade downwards. The clamping device is provided with a first clamping assembly and a second clamping assembly, and a clamping piece is arranged on the first clamping assembly. The pressing rod device is provided with a housing, a handle rod fixedly arranged on the housing, a supporting rod with one end fixed to the housing and the other end rotationally arranged on a table plate, a pull rod with one endmovably connected to the housing and the other end rotationally arranged on the table plate, a dragging rod rotationally arranged on the table plate and a torsional spring with one end arranged on the dragging rod and the other end arranged on the table plate. According to the cutting equipment, the influence of a motor on shaking of the cutting blade is reduced, so that the cutting blade is notprone to fragmentation, different pipes can be clamped for cutting, clamping is firm, operation is convenient, the pipes can be cut at different angles, and the cutting size precision is high.

The invention discloses a driving assistance type vertical-seam fishway structure and a fish gathering method thereof. The driving assistance type vertical-seam fishway structure comprises a bottom plate, a side wall, multiple long separating plates, multiple short separating plates and multiple driving assistance platforms, wherein a fishway is divided into multiple pool chambers by the long separating plates and the short separating plates, and fish passing vertical seams are reserved between the long separating plates and the short separating plates; each driving assistance platform is formed by a J-shaped plate, an arc-shaped separating plate, a water outlet seam, a water supplementation seam and a small-sized wave generation machine, and arresting nets are arranged at the outer sides of the arc-shaped separating plates. According to the driving assistance type vertical-seam fishway structure disclosed by the invention, the water flow in the pool chambers and the fish passing situation in the positions of the fish passing vertical seams can be monitored in real time by cameras which are arranged in the long separating plates, images can be synchronously transmitted to a computer automatic control system for being analyzed, a command for regulating and controlling the frequency of the small-sized wave generation machine can be sent from the computer automatic control system to the small-sized wave generation machine, the water flow which is suitable for fish migration and the water sound which is capable of attracting fish to swim upstream can be formed in the corresponding pool chamber, the fish passing efficiency of a traditional vertical-seam fishway can be obviously increased, the influence on the fish migration caused by hydro-power and hydraulic engineering can be reduced, and the driving assistance type vertical-seam fishway structure is beneficial for ecological protection for a river.

The invention discloses a spacecraft attitude control method based on a variable and inertia flow velocity adjustment controller and an actuating mechanism of the spacecraft attitude control method. The actuating mechanism comprises a main ring liquid filling annular pipe, a main ring pressure pump, an oil storage tank, a valve, a main ring liquid outlet connecting pipe, a main ring liquid return connecting pipe, a variable ring liquid filling annular pipe, a variable ring pressure pump, a variable ring liquid outlet connecting pipe, a variable ring liquid return connecting pipe and a control mechanism. A flowing loop is formed by the main ring liquid filling annular pipe, the main ring pressure pump, the oil storage tank, the valve, the main ring liquid outlet connecting pipe and the main ring liquid return connecting pipe. The other flowing loop is formed by the variable ring liquid filling annular pipe, the variable ring pressure pump, the oil storage tank, the valve, the variable ring liquid outlet connecting pipe and the variable ring liquid return connecting pipe. According to the spacecraft attitude control method based on the variable and inertia flow velocity adjustment controller and the actuating mechanism of the spacecraft attitude control method, the problems of rotation speed saturation of angular momentum exchange type actuating mechanisms in the process of wide-angle attitude adjustment in the prior art and much mass and the size requirement burden, caused by generated actuating mechanism redundant configuration of a traditional actuating mechanism in order to solve the problem of rotation speed saturation, of a spacecraft are solved.

The invention relates to a method for regulating and controlling a posture of a spacecraft by the flow velocity and an actuating mechanism thereof and belongs to the field of control to the posture of the spacecraft. The method comprises the following steps that: according to a difference value of a current posture and a desired posture, a three-axis control moment vector required by the spacecraft is obtained, and according to a principle of the momentum moment, a relation between the three-axis control moment vector and the variation of a liquid fuel flowing angular velocity is obtained; according to the working principle of ring-shaped pipe liquid angular momentum exchange equipment, a relation between the liquid fuel flowing angular velocity and the change rate of a velocity vector in the tangential direction of a pipe when liquid fuel flows is obtained; according to corresponding generated required conditions, the power of the pressure pump is controlled to apply work to the liquid, so that the flow velocity of the liquid is changed, and thus, the angular momentum H of a mass center of the spacecraft is changed and the posture of the spacecraft 10 is changed; and the changed posture is measured by a sensor and is compared with the desired posture and the steps are circularly repeated from the beginning of the step 1. The actuating mechanism for regulating and controlling the posture of the spacecraft by the flow velocity, which is used for implementing the method disclosed by the invention, comprises a liquid filled ring-shaped pipe, the pressure pump, an oil storage tank, a valve, a liquid outlet connecting pipe, a liquid return connecting pipe and a control mechanism.

The invention discloses a portable ultra-short baseline fixing device and a fixing method, comprising: a retractable rod located on one side of a hull, the retractable rod is rotatably matched with the hull; an ultra-short baseline body, the ultra-short baseline body and the retractable rod The top end is connected and fixed; it also includes a propulsion assembly, which is used to cooperate with the retractable rod to enter the seawater; a rotating assembly, which is used for fixing the propulsion assembly; and a second fixing assembly, which is used for fixing The retractable rod into the sea, through the action of the water flow during the driving process, drives the rotating rod to rotate downward through the pressing plate, and the clamping groove is blocked by the pressure plate and the limit groove, so as to reduce the impact force on the rotating rod, thereby reducing the rotation of the rotating rod. The force of the support point prevents the shaft of the rotating rod from being easily damaged.

The invention discloses an LED landscape lamp for landscape gardens, which comprises a lamp pole and a lamp body installed on the lamp pole, a cover plate is arranged on the top of the lamp body, and a An annular cavity penetrating up and down, an inner lamp body is arranged in the annular cavity, an LED power supply assembly is installed in the inner lamp body, a light bulb is arranged at the bottom of the inner lamp body, a transparent inner lampshade is installed outside the bulb, and the inner lamp body An outer bracket is fixedly arranged on the top, and the inner lamp body is fixedly installed on the lamp pole through the outer bracket, and more than one solar panel is hingedly arranged on the lamp body. The landscape lamp of the present invention can effectively wrap the lampshade during the day, reduce the probability of the lampshade being damaged, and can hide the solar panel at night, reducing the risk of the solar panel being damaged. At the same time, it can automatically clean the inner and outer walls of the lampshade to maintain the luminous flux. cooling effect.

The invention discloses a spacecraft attitude control method based on a variable and inertia flow velocity adjustment controller and an actuating mechanism of the spacecraft attitude control method. The actuating mechanism comprises a main ring liquid filling annular pipe, a main ring pressure pump, an oil storage tank, a valve, a main ring liquid outlet connecting pipe, a main ring liquid return connecting pipe, a variable ring liquid filling annular pipe, a variable ring pressure pump, a variable ring liquid outlet connecting pipe, a variable ring liquid return connecting pipe and a control mechanism. A flowing loop is formed by the main ring liquid filling annular pipe, the main ring pressure pump, the oil storage tank, the valve, the main ring liquid outlet connecting pipe and the main ring liquid return connecting pipe. The other flowing loop is formed by the variable ring liquid filling annular pipe, the variable ring pressure pump, the oil storage tank, the valve, the variable ring liquid outlet connecting pipe and the variable ring liquid return connecting pipe. According to the spacecraft attitude control method based on the variable and inertia flow velocity adjustment controller and the actuating mechanism of the spacecraft attitude control method, the problems of rotation speed saturation of angular momentum exchange type actuating mechanisms in the process of wide-angle attitude adjustment in the prior art and much mass and the size requirement burden, caused by generated actuating mechanism redundant configuration of a traditional actuating mechanism in order to solve the problem of rotation speed saturation, of a spacecraft are solved.

The invention discloses a cutting device, which comprises a cutting piece, a driving part for driving the cutting piece to rotate, a cutting table, a clamping device arranged on the cutting table, a dustproof device for preventing dust after cutting, a driving part for and a pressing bar device for pressing down the cutting sheet; the clamping device is provided with a first clamping assembly and a second clamping assembly, and the first clamping assembly is provided with a clamping piece; the pressing bar device is provided with The cover is fixed on the handle rod on the cover, one end is fixed on the cover and the other end is rotated on the support rod on the table, and one end is movably connected to the pull rod on the other end of the cover to rotate on the table. One end of the drag bar on the platen is located on the tow bar and the other end is located on the torsion spring on the platen. The invention reduces the influence of the motor on the shaking of the cutting piece, so that the cutting piece is not easy to break, can clamp different pipes for cutting, and the clamping is firm and easy to operate. It can also cut pipes at different angles, and the cutting size accuracy is high.

The invention discloses a salvage recovery device and method for floating equipment, which is used for salvaging and recovering floating equipment. The salvage recovery device includes: a frame body; A flexible net, the flexible net is arranged on the frame body; at least two grasping parts, the two grasping parts are arranged at intervals, and the grasping part includes: a grasping part body, which is fixedly connected to the frame body; at least one pair of grasping fingers arranged oppositely, a pair of said grasping fingers are hinged at the hinge point of said grasping part body, and the position of said hinge point is higher than the top of said flexible net; the driving member, It drives the gripper fingers to open or close. The invention can safely, reliably and efficiently grab, salvage and recover the floating equipment floating on the water surface.

The invention provides a floating ball for an oil fence, and belongs to the technical field of water surface cleaning. The floating ball comprises a floating ball body and an inflatable cover body, wherein the inflatable cover body is arranged on the surface of the floating ball body; the center of the floating ball body is cylindrical, and the two ends of the floating ball body are hemispherical;a cylindrical storage cavity is formed in the floating ball body; a pressing block is arranged in the storage cavity; a cover plate is arranged at an opening of the storage cavity; the diameter of the circle of the cross section of the storage cavity is smaller than the diameter of the circle of the cross section of the floating ball body; the circles of the cross sections of the storage cavity and the floating ball body are non-concentric circles; the inflatable cover body is provided with an inflatable hole; one end of the inflatable cover body is provided with a first zipper part; and theother end of the inflatable cover body is provided with a reserved edge; and a second zipper part matched with the first zipper part is arranged on the inner side of the reserved edge. The floating ball has the advantages that the external influence is small, the use stability is high, the floating ball can adapt to skins of oil fences of different sizes, and the service life is long.

The invention relates to the new energy technical field, especially relates to a new energy power generation system, and specifically relates to a new energy power generation system that applies in sea and lake places; the new energy power generation system employs a balance mechanism to stabilize the whole structure, adds anti-storm wave performances of a waterborne house, and reduces shaking influences caused by people activities on the whole structure. The wind power generation system is employed so as to provide environmental protection energy saving effects; in addition, the new energy power generation system can synchronously rise with the water level, can automatically elevate via self-control, and adds the flexibility of the waterborne house; the new energy power generation systemis simple in structure, reasonable in design, low in making cost, high in stability, easy to use, good in anti-storm waves and earthquake-proof performance, energy saving and environmental protective,and can freely move in water, thus providing conveniences for promotion and application.

The invention provides a crane, a crane tower arm control method and a crane tower arm control device and relates to the technical field of engineering machinery. In the crane, a telescopic coil cylinder is provided with a distance sensor used for detecting the telescopic length of the telescopic oil cylinder; meanwhile a tower arm winch is provided with a turn number detection mechanism used fordetecting the number of turns of the winch so that a controller can be used for acquiring the actual length of a main arm and the actual length of a rope unwound by the winch and obtaining the targetlength of the rope unwound by the winch by calculating the actual length of the main arm; the rope winding or rope unwinding speed of the winch is regulated according to a comparison result of the target length of the rope and the actual length of the rope so that the actual included angle between the main arm and the tower arm is kept within a preset included angle range; coordinated regulation is realized by regulating length relationship between the tower arm and the main arm; the control precision is relatively high, thus good posture of a hoisting arm in a lifting process or a descendingprocess is maintained; rollover of the crane is effectively prevented; and better reliability of the crane is realized.

The invention relates to the technical field of water energy-saving facilities, in particular to energy-saving type liftable floating equipment and specifically to energy-saving type liftable floatingequipment capable of being used for places such oceans and lakes. The energy-saving type liftable floating equipment comprises a floating platform, a guiding device and a stabilizing device; and by using the stabilizing device, the integral structure of the energy-saving type liftable floating equipment is more stable, the anti-wave performance of a water house is improved, and the shaking influence on the integral structure during the moving of personnel is also reduced. By using a photovoltaic power generation system, an environment-friendly and energy-saving effect is realized. And moreover, the energy-saving type liftable floating equipment can synchronously rise with the water level and can also control itself to automatically lift so that the flexibility of the water house is improved. The energy-saving type liftable floating equipment has the advantages that the structure is simple, the design is reasonable, the making cost is low, the stability is high, the use is convenient,the anti-wave performance is good, the shock resistance is good, the energy-saving type liftable floating equipment can freely move in the water, the energy-saving type liftable floating equipment isenergy-saving and environment-friendly, and the energy-saving type liftable floating equipment is beneficial for popularization and application.