146 results about "Motion response" patented technology

The invention disclose an indoor positioning system and an indoor positioning method based on three-dimensional multipoint wireless and micro-inertia navigation as well as an expansion type indoor control system. The indoor positioning system comprises a calibration device and a sensing device, wherein the calibration device comprises at least three first wireless transceiver units used for sending signals at intervals of first preset time; and the sensing device comprises an inertia sensing unit, a second wireless transceiver unit and a processing unit, wherein the inertia sensing unit is used for sensing the motion of a target object, the second wireless transceiver unit is used for producing a response signal when receiving the signal transmitted by each first wireless transceiver unit, and the processing unit is used for respectively calculating a first space coordinate of the target object according to the motion of the target object sensed by the inertia sensing unit, calculating a second space coordinate of the target object according to the response signal, and combining and processing the first space coordinate and the second space coordinate to obtain the final space coordinate of the target object. With the adoption of technical schemes of the indoor positioning system and the indoor positioning method, the positioning accuracy is high, and the motion response of the target object is sensitive, and the response rate achieves the millimeter.

The invention discloses a multi-modal man-machine interaction system and a control method thereof. The main interaction process comprises: interaction information collection, interaction motion identification, interaction instruction mapping, logic processing unit, and interaction motion response. The interactive identification algorithm of voice, touch gesture and body feeling and gesture is broken through. The method comprises contact dynamic tracking and movement track coupling algorithm, physical parameter model coupling method, multi-user interaction queue mechanism. Touch control / body feeling gesture interaction mapping instruction and logic processing, cooperation /mutual exclusion access mechanism are set; the user control instruction is converted into service instruction of application system scheduling execution; multi-user interaction is supported; the system has strong anti-interference capability and identification efficiency.

The invention discloses a parallel vector propulsion mechanism of an autonomous underwater vehicle. The parallel vector propulsion mechanism comprises a static platform and a mobile platform, wherein a propeller main motor is arranged on the static platform, a propeller drive shaft system is arranged on the mobile platform, three groups of branch chains are arranged between the static platform and the mobile platform and consist of two groups of six-degree-of-freedom UPS driving branch chains and one group of two-degree-of-freedom U-shaped branch chains, the static platform, the mobile platform and the three groups of branch chains form a two-degree-of-freedom spherical three-link parallel mechanism, and the two-degree-of-freedom U-shaped branch chains are fixedly connected with the mobile platform and are perpendicular to a plane of the mobile platform; an SPS transmission branch chain is also arranged between the static platform and the mobile platform, and is used for transferring the torque and motion of the main motor into the propeller drive shaft system. The parallel vector propulsion mechanism has the advantages of being good in low-speed steering performance, high in rigidity, high in motion precision, high in motion response speed, and the like.

The present invention relates to a real-time forecasting system of ocean floating body motion based on ocean wave image remote sensing and artificial intelligence. Firstly, marine environment big datais acquired by a marine environment sensor module, at the same time, floating body power response big data is obtained by a floating body power response sensor module, then the two types of data aretransmitted to a data memory and then are stored into a database, data stored in the data memory is used to train an artificial intelligence learning module, an artificial intelligence forecasting model which reflects floating body motion based on marine image input is established, finally a floating body motion response real-time forecasting module is established by the trained artificial intelligence forecasting model based on the marine environment big data and the floating body power response big data, and results are all transmitted to an auxiliary decision-making module and a computer. According to the system, a safe operation window and auxiliary decision-making information are provided for offshore operations affected by floating body motion, and a problem of how to operate safelyand efficiently in the event of a swaying floating body is solved.

The invention is applicable to the field of communication and provides a method for body feeling interaction. The method comprises the following steps: according to different body feeling interaction demands, corresponding human body attitude and motion model databases are established; human body attitude image data is obtained through the utilization of a preset camera; characteristic points are extracted from the obtained human body attitude image data; three dimensional data of human body attitudes and motions are computed in a matching mode according to the characteristic points; a motion trail is extracted from a plurality of obtained frames of the human body attitude image data, and matching is carried out between the motion trail and the established and stored corresponding human body attitude and motion model databases; and motions are identified according to matching results and corresponding human body attitude and motion attributes are obtained; according to the human body attitude and the motion attributes, corresponding interaction motion responses are given. The invention also provides a system for body feeling interaction. The method and the system for body feeling interaction provided by the invention can rapidly and effectively realize body feeling interaction.

The disclosure provides a method for performing automated visual motor response assessment by receiving motor response input responsive to presenting visual stimulation, the method including: presenting a scene to a subject on a display; modulating contrast of a predetermined section of the scene; moving the predetermined section relative to the scene; providing a manual input device for tracking movement of the predetermined section; receiving tracked movement data from the manual input device; measuring a kinematic parameter of the tracked movement data; quantitatively refining the tracked movement; determining a relationship between at least one of the scene and quantitatively refined tracked movement; adjusting modulated contrast relative to the quantitatively refined tracked movement; and calculating a critical threshold parameter in relation to a subject.

A site-selectable, helmet-installable load-cushioning pad structure employable inside a helmet shell as a part of a plural-spaced-pad distribution featuring a compressible viscoelastic foam core which resists rapid, but not slow-movement, compression. Associated methodology includes the steps of providing such a structure for installation inside the shell of a helmet, and pre-arming the core of that structure with a load-response characteristics which (a) resists sudden-movement, rapid compression, yet (b) offers less resistance to slow-movement compression. An encapsulating moisture barrier layer may be provided around the foam core.

The invention relates to a three-rotation-spherical-parallel-connection mechanism. According to the technical scheme, the three-rotation-spherical-parallel-connection mechanism comprises a rounded machine frame, a rounded moving platform and three branches; the machine frame and the moving platform are connected through the three branches. The three-rotation-spherical-parallel-connection mechanism is characterized in that the three branches comprise revolute pairs, arc-shaped connecting rods, moving pairs, guiding rods and spherical hinges. The three-rotation-spherical-parallel-connection mechanism has the advantages of being high in stiffness, rapid in motion response, small in rotational inertia, simple in structure and convenient to install.

The invention discloses a control system for stabilizing and reducing swing through a tuning heaving plate of a deep-water dynamic-positioning semi-submersible platform, and relates to a tuning heaving plate system of the deep-water semi-submersible platform. Lower ends of two platform stand columns on the same side of a deck of the semi-submersible platform are fixedly connected with a platform floating box, and the tuning heaving plate systems are respectively mounted at the bottom of the platform floating box and directly under the platform stand columns; each of the tuning heaving plate systems comprises a heaving plate, connecting truss frames, a restoring spring, active variable damping devices and limiting springs. According to the control system disclosed by the invention, a heaving response can be controlled or the rolling freedom degree or the pitching freedom degree can be stabilized respectively by regulating the rigidity of the restoring springs according to marine conditions or actual requirements, so that a motion response of the freedom degree of a perpendicular plane which cannot be controlled by a dynamic positioning system is controlled, and the semi-submersible platform is suitable for worse marine conditions.

The invention discloses an artificial muscle which is characterized in that a damping retracting unit and an elastic unit form a serial connection device, the sum of the length Lc of the damping retracting unit and the length Ls of the elastic unit equals to the length L of the artificial muscle, and the damping retracting unit and the elastic unit bears the same pull force which is pull force T borne by the artificial muscle. The artificial muscle is high in biont muscle performance bionic degree, short in motion response time, stable in performance, easy to adjust, high in energy utilization rate and long in service life, and a control mode and a work model are precise.

The invention relates to a method for predicting the movement of FLNG (floating liquefied natural gas) by considering the rocking influence of a liquid cabin. The method comprises the following steps of 1) describing non-linear rocking of liquid in the cabin in a time domain based on a potential flow theory and a panel method to obtain the velocity potential of the rocking of the liquid in the cabin and the pressure of the liquid on the cabin wall caused by the rocking; 2) using the pressure obtained in the step 1) as external force input at the right end of an equation of motion of a ship body, considering the influence of external wave force, calculating motion response of the ship body, obtaining the position of the ship body, and updating a free liquid level; 3) using the obtained position of the ship body at the current moment and the updated free liquid level as boundary conditions of the rocking problem of the liquid in the cabin to obtain the rocking problem of the liquid in the cabin at the next moment, circulating continuously, and stopping after time is set. Compared with the prior art, the method has the advantages of shortening computation time, greatly improving the design efficiency of the liquid cabin and the FLNG and the like.

The invention relates to a decoupled three-rotational-degree-of-freedom parallel mechanism, which consists of a machine frame (1), a dynamic platform (3), a first motion branch chain (2a), a second motion branch chain (2b) and a third motion branch chain (2c), wherein the first motion branch chain (2a), the second motion branch chain (2b) and the third motion branch chain (2c) are fixedly connected between the machine frame (1) and the dynamic platform (3); and the axes of three rotation pairs of the first motion branch chain (2a) meet at the central point of the platform (3). As few motion pairs are used and all driving electric motors are arranged on the machine frame, the motion-decoupled spherical rotation parallel mechanism of the invention has the advantages of simple structure, convenient installation, small rotation inertia and quick motion response. In addition, the spherical rotation parallel mechanism of the invention has linear motion decoupling, easy calibration and simple control, thereby reducing development cost.

The invention discloses an ultra-large type floating type platform and wave energy device integrating system based on modularization, and belongs to the field of ocean energy utilization. The ultra-large type floating type platform and wave energy device integrating system comprises a center large platform module, a small platform module, a tension leg system, an inter-platform cover plate, a vibration floater type wave energy power generation device and a module connection component. The vibration floater type wave energy power generation device converts floater swinging into piston rod horizontal movement through a gear and rack transmission manner, and a motor of a both-way hydraulic power generation device is driven to generate power. The module connection component comprises two modesaccording to a connecting platform module, and in other words, power generation is conducted through relative twisting and horizontal both-way movement of small platforms and large platforms and relative twisting between the small platforms. An outer side wave energy device utilizes incident wave energy for providing energy supply, the incident wave loads are effectively weakened, and the platform motion response is reduced; the connection component between two modules is adopted, considerable energy supply can be obtained, the relative movement between the modules can be effectively relieved, and system safety, integral stability and expandability are improved.

The invention discloses an image tracking method and an augmented reality achievement method applying the method. The image tracking method comprises the steps that 1, a target landmark is generated; 2, an augmented reality system is initialized; 3, a real scene image is obtained; 4, the target landmark is detected and matched, and an initial position and gesture matrix of the target landmark is obtained; 5, a 3D engine animation special effect is rendered; 6, a tracking execution thread is enabled, and a new position and gesture matrix of the target landmark is determined; 7, augmented reality animation special effect is updated according to the new position and gesture matrix; 8, the steps 5-7 are repeated till the target landmark disappears on a screen, the real scene image is re-obtained or the augmented reality system stops working. By adopting the method, the problem that picture flutter and motion response lag the landmark can be effectively solved.

Disclosed is a piston type SMA-piezoelectric composite variable friction damper. The damper mainly comprises an outer cylinder barrel, an upper cylinder cover, an outer end piston, a curve friction steel plate, a connection rod, a sliding shaft, an SMA wire rope, an auxiliary spring A, a prepressing bolt, an adjusting nut, a piezoelectric ceramic driver, a force sensor, a flat screw, a connection bolt, a flat end fastening screw, an SMA wire rope fixing bolt, a lower cylinder cover, an inserting bolt, an annular fixing button, a middle piston, an open hole, a spring support A, a round groove, a friction material, a cylindrical guide rod, a guide rod siding bin, threads, an adjusting bolt, a clamp protrusion, a stop block, a sliding groove, a sliding bin cover, a wire, a power inlet port, a spring support B, a spring support C, a spring support D and an auxiliary spring B. The damper is simple in structure and easy to achieve and has the effects of deformation adjusting through voltage, fast and reliable motion responses, large driving force and good self reset. The magnitude of precompression can be adjusted precisely. Energy dissipation and earthquake attenuation requirements under earthquakes of different intensities can be met.

The invention provides a passive wave absorbing and roll damping power generation device of a floating draught fan platform. The passive wave absorbing and roll damping power generation device comprises the floating draught fan platform, wave absorbing floaters, buffer springs and linear generators. The floating draught fan platform comprises platform pile legs and brace rods. Each linear generator comprises a stator and a rotor. The passive wave absorbing and roll damping power generation device can reduce motion response of floating draught fans under the wave action and can also absorb wave energy and convert wave energy into electric energy. The buffer springs and the linear generators can play a role of roll damping, increase motion damping of the floating draught fan platform and can reduce motion response of the floating draught fan platform under the wave action. The wave absorbing floaters absorb wave energy and convert wave energy into motion mechanical energy of the wave absorbing floaters. The motion mechanical energy of the wave absorbing floaters can be converted into electric energy through the linear generators. The passive wave absorbing and roll damping power generation device can effectively reduce the motion response of the floating draught fan platform under waves, enable the draught fans to be in a more stable operating state and improve the working efficiency and safety of the draught fans.

The invention provides a movable ballast leveling control device for a floating-type draught fan. Tilting and motion response of the floating-type draught fan can be restrained. The movable ballast leveling control device comprises a movable ballast, a sliding rail, a limiting support, a leveling control server and the like. The movable ballast is provided with a power part, a brake and a locking system and can receive signals in real time to slide, brake and lock on the rail. The sliding rail is arranged according to the basic layout and an available space of the floating-type draught fan and is provided with a sliding rail body, a hinge, a lead screw and the like needed by moving of the ballast. The limiting support is arranged at the end of the rail, so that the ballast device is prevented from sliding out of the rail; and a ballast power auxiliary device is placed. The leveling control server can be installed in a basic deck or a draught fan tower tube, and according to the velocity magnitude and direction monitoring data of wind, waves and streams, a real-time active control instruction is sent to the movable ballast device.

An embodiment of the invention provides an operation/maintenance control method and an operation/maintenance control device of an offshore wind farm, and an offshore wind power system. The operation control method comprises the steps of receiving a request for executing operation on the offshore wind farm; acquiring information of first sea condition of the offshore wind farm, and determining an offshore operation/maintenance ship according to first motion response parameters of a plurality of operation/maintenance ships in a first sea condition; acquiring first navigation route information of the offshore operation/maintenance ship to the offshore wind farm, and transmitting an operation instruction which comprises the first navigation route information to the offshore operation/maintenance ship. The wind/wave resistance of the offshore operation/maintenance ship which is selected according to the first motion response parameters of the plurality of operation/maintenance ships in the first sea condition matches the first sea condition of the offshore wind farm, thereby ensuring high safety of the offshore operation/maintenance ship in the navigation process and high comfort of personnel in the offshore operation/maintenance ship.

The invention discloses a ship whipping motion response prediction method and system under a combined effect of underwater explosive shock waves and bubbles. The ship whipping motion response prediction method comprises the steps that step 1, a ship is equivalent to a uniform cross section free ship body girder, and therefore the prediction of ship motion responses are equivalent to the predication of free ship body girder motion responses; step 2, the load pressure process of the free ship body girder under the underwater explosion effect is divided into five time phases, and a shock wave pressure peak value, a bubble pulsation phase negative pressure peak value and a bubble first time pulsation pressure peak value are collected; step 3, motion displacements in the five time phases of underwater explosion of the free ship body girder are solved. The invention further provides a ship whipping motion response prediction system. The ship whipping motion response prediction method and system comprehensively consider the shock effect of the shock wave and the bubble load on the whole ship, the underwater explosion load pressure is simplified to be five phases, the motion displacements of a ship in different phases are calculated, and therefore project prediction of ship elastic motion or whipping motion responses under medium and distal field explosion effect is achieved accurately, simply and conveniently.

The invention discloses a three-body-combined offshore laser radar wind measuring buoyage. The three-body-combined offshore laser radar wind measuring buoyage comprises a buoy, a wind measuring laser radar, a motion sensor module, a fan assembly, storage batteries, meteorological measurement modules, a seawater measurement module and a mooring system for positioning, wherein the wind measuring laser radar, the motion sensor module, the fan assembly, the storage batteries, the meteorological measurement modules and the seawater measurement module are mounted on the buoy. The buoyage can combine the laser radar and the ocean buoy and has advantages in cost and use flexibility in a working process for finishing corresponding offshore wind profile measurement; further, the buoy adopts a three-body-combined structure, the motion response amplitude in waves is smaller, the hydrodynamic performance is excellent, the structural components are convenient and easy to dismount and assemble, the size of the buoyage is relatively small and can meet the requirement for loading into a standard container, package and transport of the whole system by the container can be realized, requirements of land transportation and sea transportation can be met, and the buoyage has the advantages of convenience, rapidness, high flexibility, high price/performance ratio and the like in an optional mode of transportation.

The invention discloses a coupling motion and force measuring simulation experiment system of marine floating structure under the action of internal solitary wave, which comprises a floating structuremodel, a motion response recording unit, an anchor chain unit and an anchor chain force measuring unit; the dynamic response of the floating structure model and the stress of anchor chain under the action of the internal solitary wave can be recorded in real-time; the floating structure model comprises a platform body, a motion measuring device installation department and counterweight; the floating structure model has the advantages that each part is independent, convenient to install, and convenient to increase and decrease the counterweight; with the combination of a micro-electronic gyroscope and a micro-electronic accelerometer, the motion response recording unit has the advantages of high measuring precision, small volume and low cost; the motion response recording unit not only canaccurately measure the motion response of the floating structure, but also can obtain the resultant force by analyzing the acceleration of the platform; in addition, by using fiber Bragg grating to measure the force of the anchor chain, not only can the distribution characteristics of the force of the anchor chain be obtained, but also the bending of the anchor chain can be understood through thedifferent stress and strain of the fiber Bragg grating. The construction and implementation of this experimental system is of great significance to the study of the stability of the floating structure.

The invention provides an angular position wireless follow-up control device and a method of the angular position wireless follow-up control device. The angular position wireless follow-up control device comprises an upper computer module and a lower computer module, wherein the upper computer module is arranged on a follow-up object or in a monitor room, and the lower computer module is arranged on an application site and provided with a servo motor. The effect of wireless follow-up control is achieved through wireless data transmission. According to the angular position wireless follow-up control device and the method of the angular position wireless follow-up control device, a long-distance wireless follow-up control method and a command control method can be achieved, and operation of the servo motor can be observed through remote wireless video. Wireless transmission distance is long, data transmission is stable and reliable, following performance (real-time performance) of the servo motor to a gyroscope is good, motion response is quick, motion control precision is high, an error is small, and anti-interference capacity is strong. Stability and practicality in a plurality of working areas are guaranteed.

The invention relates to a deep sea multi-column mooring floating platform vortex-induced motion pool test device. The device comprises a trailer, a longitudinal motion guide rail mechanism, a transverse motion guide rail mechanism, a yawing rotation mechanism, an optical measurement mechanism and a top plate for mounting a floating platform model; a longitudinal elastic piece for determining thelongitudinal rigidity is further arranged between the trailer and the transverse motion guide rail mechanism; a transverse elastic piece for determining the transverse rigidity is further arranged between the transverse motion guide rail mechanism and the yawing rotation mechanism, and an elastic restraining piece for determining the rotating rigidity is further arranged between a yawing rotatingsupport and a connecting main shaft. Compared with the prior art, the test device not only can accurately and equivalently simulate the three-degree-of-freedom rigidity of a mooring system in the horizontal plane under the actual sea condition, but also can simulate the vortex-induced motion response characteristic of a deep sea platform under the nonlinear rigidity equivalent constraint.