401 results about "Spatial movement" patented technology

Apparatus including a first spinal prosthetic member attachable to a first spinal structure, and a second spinal prosthetic member attachable to a second spinal structure, the first and second spinal prosthetic members being movably attached to one another with a fastening device, the fastening device having a non-tightened position which permits spatial movement of the first and second spinal prosthetic members with respect to one another at a desired orientation, and a tightened position which fixes the first and second spinal prosthetic members at the desired orientation.

A method for ascertaining the axis of rotation of a vehicle wheel in which a light pattern is projected at least onto the wheel during the rotation of the wheel and the light pattern reflected from the wheel is detected by a calibrated imaging sensor system and analyzed in an analyzer device. Accurate and robust measurement of the axis of rotation and, optionally, of the axis and wheel geometry, in particular when the vehicle is passing by, is achieved in that a 3D point cloud with respect to the wheel is determined in the analysis and a parametric surface model of the wheel is adapted thereto; normal vectors of the wheel are calculated for different rotational positions of the wheel for obtaining the axes of rotation; and the axis of rotation vector is calculated as the axis of rotation from the spatial movement of the normal vector of the wheel.

A transmission or actuator offering multiple rotational outputs proportionate in speed to that of a common rotational input, each output according to its own ratio. The ratios are continuously variable between positive and negative values, including zero, and may be varied by electromechanical actuators under computer control. The transmission relates the output speeds one to another under computer control, and thus makes possible the establishment of virtual surfaces and other haptic effects in a multidimensional workspace to which the transmission outputs are kinematically linked. An example of such a workspace is that of a robotic or prosthetic hand.

It comprises a supporting structure in which at least one arm is slidably attached. Each arm comprises first and second members hinged to each other. The first member is rotatably hinged to the supporting structure and it can be rotated about a longitudinal axis and the second member may receive a joint having at least two degrees of freedom for attaching a tool. The longitudinal axis of the first member is substantially perpendicular to an axis joining the first member and the second member to each other. A simplified architecture is obtained allowing for accurate and efficient spatial movement of the tool holding arm.

During control of a user interface via free-space motions of a hand or other suitable control object, switching between control modes can be facilitated by tracking the control object's movements relative to, and its contact with a “virtual touch plane or surface” (i.e., a plane, portion of a plane, and/or surface computationally defined in space, or corresponding to any physical surface).

The invention is a kind of decided magnetic radiating processing method. The piece and the nozzle for spraying magnetic rheology liquid are set on the numerical control platform, there sets a magnetic field. It controls the rheology performance of magnetic rheology liquid through controlling the special movement position of the piece and the direction-magnitude of the magnetic field, and controlsthe viscosity of the liquid and the spraying angle. Makes the liquid into anisotropic liquid media and processes the piece. The inventin includes numerical control platform with y axis, v axis, x axis, z axis and u axis, the piece is placed on y axis, v axis has a nozzle above it and u axis. There is controllable electromagnetic coil, z axis connects with u axis and x axis.

There are provided an information processing apparatus and method using a wireless communication terminal. The information processing apparatus includes: a wireless communication terminal generating displacement corresponding to its spatial movement by a user's manipulation, as pointing information, and wirelessly transmitting the pointing information; and an information processor receiving the pointing information transmitted from the wireless communication terminal, analyzing the received pointing information to extract the displacement, and moving a cursor on a screen to a location corresponding to the extracted displacement. Therefore, by using a wireless communication terminal as a spatial pointing device for an information processor and performing wireless data communication between the wireless communication terminal and the information processor using the pointing function of the spatial pointing device, it is possible to easily and conveniently perform data communication between the information processor and the wireless communication terminal and easily control the information processor using the wireless communication terminal.

The invention discloses a camera and robot relative pose calibration method based on pixel space optimization. According to the method, a calibration board carried at the tail end of a robot is adopted for moving inside the range of the view of a fixed camera, and space motion constraint information of the calibration board is utilized for calibration to obtain the optimal relative pose relation between the camera and a robot base. Firstly, linear invariance of a rotating matrix is utilized for solving a homogeneous transformation matrix to obtain a preliminary calibration result; then, the preliminary calibration result is used as an initial optimization value for optimization of pixel space, so that a reprojection error is made to the minimum. According to the camera and robot relative pose calibration method, the iterative optimization algorithm is adopted, no precision external measurement equipment is needed, model constraints of the image pixel space are utilized, the effective optimization initial value obtaining method is combined, the calibration result with the higher precision is obtained, and the requirement of a visual servo robot for completing positioning and grabbing working in industrial application can be met.

The invention relates to a milling, grinding and polishing device based on an intelligent numerically-controlled platform, belonging to the technical field of modern optical processing. The device comprises an industrial robot, a control module, a driving module, a human-computer interaction interface, a working component, a polishing and cooling liquid cyclic control system and a sucker clamp, wherein the control module and the driving module control and drive the spatial movement and spatial positioning of the industrial robot, thereby controlling the working state of the working component, namely a grinding/polishing module; the control module also controls the human-computer interaction interface and simultaneously controls a stirring device, a temperature control device and a conveying device of the polishing and cooling liquid cyclic control system; and the sucker clamp is used for clamping a workpiece to be processed. The device of the invention has low manufacturing cost, large processing caliber and wide processed surface types, and two functions of grinding and polishing can be realized by replacing grinding heads.

A method and a system for detecting the spatial movement state of moving objects, e.g., vehicles. Due to a, for example, non-cartesian arrangement of four rotational rate sensors and/or acceleration sensors, it is also possible to obtain a redundant signal in addition to the desired useful signal indicating the spatial movement state, e.g., the rotational movement and/or acceleration in space; if this redundant signal is large enough in comparison with the rotational rate actually applied, it may be used for detection of the size of the error and the defective sensor. The four sensors are mounted, for example, on a sensor platform forming a three-sided truncated pyramid so that all possible three-way combinations of sensors are mutually linearly independent. The accuracy about the vertical axis is defined by the angle of inclination of the side faces of the truncated pyramid.

The invention provides a method for detecting a space moving object in a dynamic environment. Four front-frame and back-frame images are acquired through a binocular camera, reliable feature points in the four images are extracted, three-dimensional reconstruction is conducted on the feature points, scene flow of the images is calculated, then the feature points with similar motion are clustered, and the moving object in a scene is detected.

The invention discloses a laser tracker-based machine tool error dynamic compensation method. A laser tracker is adopted to perform dynamic tracking detection; and the method is suitable for being used in laboratory environments with strictly controlled temperature and humidity and can also be used in workshop site environments with severer conditions. Laser interference ranging, photoelectric detection, precision machinery, a computer and a control and modern numerical value calculation theory are integrated by the laser tracker; a space moving object is tracked and spatial three-dimensional coordinates of an object are measured in real time; and the method has the characteristics of high precision, high efficiency, real-time tracking measurement, quickness and convenience in mounting, easiness in operation and the like. A machine tool is dynamically monitored and compensated in real time based on a laser tracker measurement result; error measured by using the scheme is total error obtained after all system errors and random error are superposed; and thus, all error values can be dynamically compensated in real time by the scheme, the system precision of the machine tool is greatly improved, and a detection device of the machine tool is simplified.

The invention discloses a detection method for geometrical errors of a rotation shaft of a five-axis numerical control machine tool, belongs to the technical field of machine tool precision detection, and relates to a detection and identification method for the geometrical errors of the rotation shaft of the five-axis numerical control machine tool. The detection method comprises the steps that image information of a concentric target are collected by a binocular camera and used for representing the actual movement information of the rotation shaft, the three-dimensional coordinate information of a feature point is acquired finally through camera calibration and image processing, and the movement track represents the space movement track of one point on the rotation shaft; and through combination of a multi-body system theory of the machine tool and a subcoordinate transformation theory of the machine tool, the errors PIGE having no relation to the position of the rotation shaft and the errors PDGE having a relation to the movement position of the rotation shaft are identified and measured. The method effectively achieves detection and identification of the geometrical errors of the rotation shaft of the machine tool, the measurement process is simple and fast, and the measurement efficiency is high. The requirements for the operation track of the machine tool are simple in the measurement process, cooperation with other shafts is not needed, and other shaft linkage errors are avoided.

The invention relates to a method for rapidly retrieving a motional trajectory of an interested video target. The method comprises the following steps: (1) integrating massive videos, and correlating geospatial information; (2) converting heterogeneous data to generate a video stream with a unified format for video viewing; (3) presetting a topological camera relationship table in a database, traversing all cameras shooting the target; (4) editing and recording elements of video pictures of all the cameras shooting the target, and storing the elements in the database; (5) according to the recorded elements, splicing the videos of the whole motional trajectory of the interested target according to the time sequence; forming a motional trajectory route of the target on a GIS map according to the time sequence; (6) outputting a video route graph of the motional trajectory of the target with the same format so as to facilitate archiving and later viewing. By the method, the target can be found rapidly and the spatial motional trajectory of the target can be intuitively acquired, so that the retrieving efficiency is improved, and the viewing time is saved.

The invention discloses a near space moving target positioning method based on an unmanned aerial vehicle, which belongs to the technical field of unmanned aerial vehicle target positioning. The method comprises the following steps: firstly, an infrared target detector loaded on the unmanned aerial vehicle is used for acquiring a target angle measurement value, in combination of an unmanned aerial vehicle navigation system, the position and the attitude information of the unmanned aerial vehicle are outputted, and the angle value of the connection line between the target and the unmanned aerial vehicle in an earth-rectangular coordinate system is calculated; then, according to the calculated angle value, the least-squares solution of the target in the earth-rectangular coordinate system is solved; and finally, the solved rectangular coordinates are converted to the longitude, the latitude and the height. The method can realize high-precision positioning of the near space target when a laser range finder or a radar can not be used normally, and can be applied to multi-unmanned aerial vehicle formation cooperative positioning.

A mobile device is provided for imparting spatially articulable control to an application program. The device includes a display for presenting the GUI. A spatial detection unit is configured to detect spatial movement of the mobile device and provides an output responsive to the detected spatial movement. A data processor is configured to provide a platform for executable code, and, monitors and provides the output to a communication channel. Executable code executes on the platform of the data processor. The executable code includes, an interpreter library which is operably linked to the communication channel and is configured to implement communication with the data processor to receive the output. The interpreter generates events relative to the interpreter library. A plug-in has an interface cooperatively linked to the interpreter library to receive corresponding generated events. The generated events are provided to a script interface of the plug in. A browsing program is cooperatively linked to the plug-in and configured to receive the generated events therefrom. In this way, the script interface supports a scripting environment such that the browsing program is controlled on the display in response to the spatial movement of the mobile device.

The invention relates to a method and a device for measuring the movement locus of an automatic knife-changing mechanical arm and belongs to the field of space movement locus tracking and measurement of an automatic knife-changing mechanical arm at a processing center. The method is a non-contact type three-dimensional online measurement method based on two-dimensional PSDs (Phase Sensory Detectors); light sources as measured targets are installed on a measured ATC (Air Traffic Control) mechanical arm and are projected onto two-dimensional induction screens of two PSD cameras composed of two position sensitive detectors respectively through a lens to form light spots; the two PSD cameras respectively output two-dimensional coordinate values under the excitation of the light spots; after passing through a signal processor, a voltage value corresponding to a coordinate position is outputted; and a computer collects and saves a corresponding signal through a voltage acquisition card. The method is quick in response speed and satisfies the real-time online measurement requirements. Through the movement locus of the mechanical arm, the positioning accuracy, the movement stability and other movement states in the knife changing process can be judged to provide a quantitative method for the reliability detection of a knife library.

A method of temporal error concealment for generating the image data of the missing macro-blocks in the current frame by using the previous frame and the correct data of the current frame is disclosed. The method includes the steps: first using Optimal Regression Plane to estimate the space motion vectors for each block in the missing macro-blocks; selecting appropriate motion vectors from the estimated space motion vectors and the correct temporal motion vectors in the pervious frame as the candidate motion vectors; dividing the missing macro-block into sub-blocks with optimal size; fine tuning the candidate motion vectors as the predicted motion vectors; and using the predicted motion vectors to generate the predicted image data for the missing macro-block and further concealing the effect of the missing macro-blocks upon the image quality of the current frame. The method reduces the computation time, speeds up the process, and improves the image quality.