973 results about "Motion simulation" patented technology

The invention discloses a method for realizing a car driving simulator facing to training, which depends on computer graphics, virtual reality and other technologies and generates virtual vision, sound effects and motion simulation in the car driving process through a computer in order that a driving learner immerses into a virtual driving environment; according to the feelings of vision, hearing and touch provided by the virtual driving environment, the learner can conceive driving motions and manipulate a catanator in a simulated cockpit. The invention is suitable for the increasing need of driving training, saves fields, cars, gasoline, manpower and other resources and has the functions of various test items and error prompt in order that a user masters the basic skills under a safer environment; the practices in urban scenes, mountainous roads and freeways can reach the effect of familiarizing traffic regulations and improving driving skills; the simulation in various weather can train the driving skills of users under the severe situation and the strain capacity of various emergent situations, thereby having important application value in commercial and scientific research fields.

A sports simulation system includes a projectile tracking apparatus having a display surface on which a visually apparent three-dimensional sports scene is presented. The projectile tracking apparatus captures images of a projectile tracking region disposed in front of the display surface to detect a launched projectile traveling through the projectile tracking region towards the display surface. At least one processing stage communicates with the projectile tracking apparatus and is responsive to the image data to determine the three-dimensional positions, velocity and deceleration / acceleration of a detected projectile traveling through the projectile tracking region. The determined three-dimensional positions, velocity and deceleration / acceleration are used by the at least one processing stage to calculate a trajectory of the launched projectile into the visually apparent three-dimensional sports scene. Updated image data is generated by the at least one processing stage that includes a simulation of the launched projectile into the visually apparent three-dimensional sports scene following the calculated trajectory. A display device coupled to the at least one processing stage receives the image data from the at least one processing stage and presents the visually apparent three-dimensional sports scene, including the simulation, on the display surface.

There is described a method for controlling and / or monitoring a movement of a free body in an industrial machine, wherein the industrial machine comprises an actuator for carrying out a movement, wherein the movement of at least one free body is either mechanically coupled to the movement of the actuator and / or is decoupled from the movement of the actuator. At least one of the following physical variables of the free body: weight, density, frictional parameters, geometric form and / or center of gravity is input into a simulation program, whereupon with the aid of at least one of these physical variables, the movement of the free body is simulated, wherein the simulation takes place, in particular, in real time. This enables a better simulation of dynamic and / or static processes in an industrial machine.

A motion platform device includes a moving platform which is coupled to a base platform by three pedestals and three linkages. Three actuators are disposed on the base platform and are synchronously movable relative to the base platform along three linear sliding paths, and are connected respectively to the pedestals. The linkages are linked with the moving platform and are respectively coupled to the pedestals so as to transmit movement of the actuators to turn the moving platform. The linkages are controlled by a simulated movement controller to be moved relative to the pedestals along the respective lengths so as to perform flight motion simulation, particularly in spatial disorientation training. This three-leg six DOF linear motor based parallel manipulator has been proved to be excellent in simulation performance, especially in the working space.

A transcutaneous electrical nerve stimulation device for treating a user's lower back pain or discomfort is provided. The inventive device comprises a stimulation pad with an array of electrodes therein. A controller communicates with the electrodes to energize / de-energize them in a patterned, sequential manner. The patterned actuation of the electrodes in a sequential fashion provides electrical impulses to the patient's skin, simulating a transverse wave motion. The transverse wave motion simulation provides the user with the effect of the electrical stimulation combined with the mechanical tissue stimulation received in traditional massage therapy, resulting in improved pain and discomfort relief. The device may use programs stored in the controller. Alternatively, the user may manually actuate one or more electrodes as well as manually move the electrode actuation to concentrate on a specific lower back region using an electrostatic touch pad or the equivalent. The user may also use voice commands to access the stored programs, move the electrode stimulation region, change the electrode actuation intensity and / or dwell time. The device may store the user's manually-generated routines for repeating when desired. A visual display may provide feedback to the user regarding the electrode actuation position and pattern.

The present invention provides methods for acquiring and utilizing time-based 3d jaw motion images (4d datasets) to enhance the computer-aided design (CAD) of dental devices, which may include dental restorations, oral prostheses, and oral appliances. These 4d datasets may be used directly to provide a jaw motion model suitable for enhanced CAD or, they may be used to derive mathematical expressions that are then used to drive a motion simulation. The methods of the invention are based on acquiring time-based 3d images (a 4d sequence) of the upper and lower teeth, with each 3d frame in the time sequence capturing some upper and lower arch anatomy (the oral anatomy). Each image in the 4d sequence may therefore contain an accurate record of the relationship between the upper and lower arch in three dimensions.

A video game includes a controller, a processor and display. The controller includes a special quick look button 28 that, when activated, allows a player to causes a looking movement of a character that simulates the lateral rotation of the head or upper body of a person looking sideways while walking forward.

A sports simulation system includes a projectile tracking apparatus having a display surface on which a visually apparent three-dimensional sports scene is presented. The projectile tracking apparatus captures images of a projectile tracking region disposed in front of the display surface to detect a launched projectile traveling through the projectile tracking region towards the display surface. At least one processing stage communicates with the projectile tracking apparatus and is responsive to the data received from camera devices to determine the three-dimensional positions, velocity, acceleration and spin of a detected projectile traveling through the projectile tracking region. The determined three-dimensional positions, velocity, acceleration and spin are used by the at least one processing stage to calculate a trajectory of the launched projectile into the visually apparent three-dimensional sports scene. Updated image data is generated by the at least one processing stage that includes a simulation of the launched projectile into the visually apparent three-dimensional sports scene following the calculated trajectory. A projection unit coupled to the at least one processing stage receives the image data from the at least one processing stage and presents the visually apparent three-dimensional sports scene, including the simulation, on the display surface.

A user interface design and evaluation system and a hand-interaction-based user interface design and evaluation system are provided. The user interface design and evaluation system includes: a user interface design unit, a human model interaction design unit, a user interface prototype simulation unit, a human model simulation unit, and a user interface evaluation unit. In order to develop a user interface in consideration of usability of a user, the system provides a usability evaluation feedback system performing optimization of an interface design based on a motion simulation of a body model and user interface model. Through this, an optimum interface design is derived and by reducing the initial usage difficulty of the new interface for a user, the user can easily use the new interface and work performance of the user can be enhanced. In addition, by supporting fast prototyping and evaluation in a new product development stage, efficient production of a product having a short life cycle can be actively implemented.

The invention discloses an offline programming and modifying method of a six-axis grinding and polishing industrial robot. The offline programming and modifying method particularly includes the steps of building a model, extracting workpiece machining path information, performing point data processing, generating a robot working motion joint angle, generating a robot working motion trail, performing robot grinding and polishing working motion simulation, generating a robot motion key parameter conversion module and a code, modifying the position of an abrasive belt, modifying the position, posture and singularity and modifying the grinding and polishing work environment. The offline programming and modifying method enables the offline programming process of the six-axis grinding and polishing industrial robot to be simplified, has practicability, can quickly generate programs applicable to the six-axis grinding and polishing industrial robot which grinds and polishes workpieces with complex surfaces, and improves the grinding and polishing uniformity.

A sports simulation system includes a projectile tracking apparatus having a display surface on which a visually apparent three-dimensional sports scene is presented. The projectile tracking apparatus captures images of a projectile tracking region disposed in front of the display surface to detect a launched projectile traveling through the projectile tracking region towards the display surface. A projectile launch area sensing unit captures images of the projectile launch area. At least one processing stage communicates with the projectile tracking apparatus and the projectile launch area sensing unit and is responsive to the data received therefrom to determine the three-dimensional positions, velocity, acceleration and spin of a detected projectile traveling through the projectile tracking region. The determined three-dimensional positions, velocity, acceleration and spin are used by the at least one processing stage to calculate a trajectory of the launched projectile into the visually apparent three-dimensional sports scene. Updated image data is generated by the at least one processing stage that includes a simulation of the launched projectile into the visually apparent three-dimensional sports scene following the calculated trajectory. A projection unit coupled to the at least one processing stage receives the image data from the at least one processing stage and presents the visually apparent three-dimensional sports scene, including the simulation, on the display surface.

The invention belongs to the fields of a computer simulation technology and a virtual reality technology, and in particular relates to a flight simulation training device. The flight simulation training device mainly comprises a network communication unit, an instructor console unit, an airplane performance simulation unit, an avionics fire control simulation unit, a cabin simulation unit,a data collecting and processing unit, a maneuvering / motion simulation unit, a visual simulation unit, a sound simulation unit and a battlefield environment simulation unit the flight simulation training device provided by the invention has front and rear cabins and is relatively good in battlefield background and target visual simulation, the training device is broad in display viewing field and is capable of achieving such functions of front and rear cabin matching, formulation, fighting and the like; the training device is mainly used for conducting comprehensive training on pilots in the front and rear cabins, including training on take-off, landing, cruise and maneuvering flight, front and rear cabin cooperative maneuvering, cooperative combat training, training of attacking land, sea and air targets, training on fault and special situation managing and the like. With the application of the training device, the trained pilots can master good flight skills as well as fighting capabilities of land and air attack.

A motion simulation system for providing force feedback to a user in response to movement of the user within a virtual environment comprises a virtual environment system for producing a virtual environment to the user. Cables are connected to a user interface to support the user interface in a suspended position. Actuators are associated to each cable to adjust the length of the cables. A cable tension controller is connected to the actuators and to the virtual environment system to calculate a position and orientation of the user within the virtual environment as a function of the length of the cables, and to control the actuators so as to constrain movement of the user interface as a function of interactions between the user and the virtual environment, to provide force feedback to the user. A locomotion simulation apparatus and method are provide as well.

The disclosed aerodynamic muscle motion simulation control platform comprises: three very same pieces of aerodynamic muscles connected to a central post and a fixed platform, a motion platform hinged to the muscles with uniform-distributed hinge points, and the central post to rigid connect with the fixed platform and hinge the motion platform through a central ball hinge with the hinge point on platform center to endow the motion platform two rotation DOF. Besides, the control system comprises an input conversion module, a controller, and an output drive amplification module. This invention is fit to different motion simulation.

The invention provides a vehicle end relation comprehensive test stand applicable for an interference test, a function test and a research test of a vehicle end relation component based on a six-degree-of-freedom parallel mechanism. A front counter-force base is fixed to a foundation, and connected with six sets of hydraulic execution mechanisms through three groups of low hinging supports; the front ends of the hydraulic execution mechanisms are connected with a motion platform through three groups of upper hinging supports; the motion platform is connected with an air spring through a bracket; the other end of the motion platform is connected with a front end transitional plate through a connecting frame; and a six-dimensional force / torque sensor is arranged on the motion platform. By adopting a modularized flexible design, the test on all members on the vehicle end of a railway carriage can be performed by adjusting the combinations of different members or a single member on the vehicle end, states of a train which runs through a straight line or a curve can be simulated, and a mutual interference relation of the members on the vehicle end can be checked; and the function test and the research test can be performed. The vehicle end relation comprehensive test stand is applicable for a motion simulation test and a force loading test of other large structural members.

The invention relates to a rehabilitation training system of amputation upper limb based on virtual reality, comprising the following parts: myoelectric signal detection and processing, amputation upper limb modeling and virtual reality scene interaction. The myoelectric signal detection and processing is realized by the steps of extracting, amplifying, filtering, A / D-transferring and multipath-acquiring myielectric signals on a stump by using a myoelectric tester ; extracting, extracting Rubust features of the myielectric signals and recognizing a fast and effective upper limb movement gesture together with an on-line learning method; the amputation upper limb modeling is realized by the steps of carrying out three-dimensional reconstruction on the amputation upper limb by adopting a three-dimensional parametric grid model and using a photo of a healthy upper limb, and realizing motion simulation of a virtual hand by taking the tracked upper limb movement parameters as model driven data; and the virtual reality scene interaction is realized by the steps of carrying out real three-dimensional interactional scene modeling and realizing real time interaction between the stump musclemovement and the three-dimensional scene through myoelectricity. The rehabilitation training system is mainly used to assist an upper limb amputated patient to carry out necessary adaptive training before installing an artificial limb so as to help the patient to adapt to the usage of the artificial limb as soon as possible.

The invention provides a rotor wing dynamic test device which comprises a model rotor wing system, a pitching motion simulation mechanism, a rolling motion simulation mechanism, a course rotation simulation mechanism, an x-y-z axis horizontal moving device and a test accessory device. Seven independent control servo motors are used for the rotor wing dynamic test device and used for respectively driving longitudinal, lateral and transverse linear motions, pitching, rolling and course rotation motions and rotation of a model rotor wing. The seven servo motors are respectively provided with an independent control system, six-freedom-degree motion laws and the rotor wing rotating speed can be dynamically combined to be controlled under control of a central industrial personal computer, model test study on influences of dynamic maneuvering flight of helicopters on the aspects such as rotor wing pneumatic and flight mechanics and dynamics can be conducted, and motion combination tests among different degrees of freedom can be carried out according to needs.

The invention discloses a painting robot position planning method for a large-scale free-form surface and relates to the technical field of robot painting. According to the method, firstly, a spray gun track planning method is adopted to complete blocking of the large-scale free-form surface and planning of a spray gun track; then on a specified position search cone generatrix, a point in a working space of a painting robot and a three-dimensional moving platform is selected and a joint angle and a joint angular velocity in the painting motion are solved out by utilizing the robotics principle so as to carry out feasibility checking on the point; next, collision interference check is carried out by utilizing a motion simulation function of three-dimensional shaping software; finally, all feasible positions corresponding to free-form surface blocks are found. The painting robot position planning method for the large-scale free-form surface can implement batch position planning on a plurality of free-form surface blocks in the large-scale free-form surface and has a high calculating speed and a high automation degree.

The invention relates to the research field of a microgravity simulating platform of a space robot, in particular to a microgravity air floatation target satellite simulator system with five degrees of freedom. The system consists of three parts, namely a movement simulator, a satellite simulator and a ground control panel. The movement simulator simulates the states of zero gravity, low friction and micro interference of a base satellite; the satellite simulator has a basic single-shaft attitude adjustment and track control function under a condition that a satellite provided by the movement simulator is in a track movement simulating environment, comprises a sensor, a controller and an actuating mechanism (a counteractive flywheel and a cold gas injecting system), and is provided with auxiliary systems such as a power system, a wireless communication assembly, a structural component and the like; and the ground control panel provides a basic function of the wireless data communication between a target satellite and the ground, and realizes the control on the target satellite and the receiving, storage and display of the data.

The invention discloses a vehicle passability detection system based on vision and laser radar sensors, which comprises a vehicle-mounted sensor and a data processing module. point cloud data of roadis collected by vehicle sensor, and 3D reconstruction of road scene is carried out. Point cloud data includes characteristic model data of road, tunnel and obstacle. The data processing module is usedfor establishing a spatial tree for the three-dimensional reconstructed scene and generating a corresponding accelerated collision detection solution process; The vehicle is modeled according to thegeometrical parameters of vehicle throughput, and the rigid body geometrical contour model of vehicle is obtained. Vehicle dynamic data were collected and vehicle motion model was established. According to the vehicle motion model and the road 3D scene data, the vehicle motion simulation trajectory is generated. Along with the vehicle motion simulation trajectory, real-time collision detection calculation is carried out to obtain the passability detection results.

The invention provides a teleoperation system for grabbing objects using space mechanical arm based on simulation, which comprises a data source acquisition module, a middle piece module, a target tracking and positioning module, an operation planning module, and a motion simulation module. Through an insertion piece type structuring strategy, it is possible to realize the real time acquisition of a plurality of different data sources by the system and to realize the inconsistency adjustment between data acquisition and data processing speed. Through the use of a rapid tracking algorithm, the photographing camera is ensured to track the target in real time; and through the pose measurement algorithm, the synchronization of the poses between a real target and a simulated target could be ensured. The invention provides a testing platform for the visual positioning algorithm in the dynamic target grabbing process by a space mechanism arm and can demonstrate the grabbing process through a three-dimensional visualized manner to assist the operation men on the ground to complete the control over the grabbing process.

The invention belongs to the technical field of mechanical-electrical integration and drive control and discloses a power-driven six-degree of freedom motion platform high-precision control system and control method. The power-driven six-degree of freedom motion platform high-precision control system comprises an embedded controller, a real-time Ethernet bus network and a driver; the embedded controller transfers a control instruction to the driver through the real-time Ethernet bus network, a power-driven cylinder is connected with a servo motor, the driver drives the servo motor directly, the servo motor drives the power-driven cylinder to perform telescopic motion, and the motion of a six degrees of freedom motion platform is achieved. The power-driven six-degree of freedom motion platform high-precision control system and control method have the advantages of being high in control real-time performance, good in motion synchronism of all branches, high in reliability, simple in structure, flexible in extension and easy to maintain. Based on the flexible software design platform, not only can the motion simulation be achieved, but also the high-precision multi-degree of freedom location can be achieved.

A force feedback and interactive system is provided in the present invention, wherein the force feedback and interactive system utilizes a mechanism for detecting weight or center of gravity and reacted force from an operator on a multi-axis motion platform, and a main controller which is a kernel of data processing and motion simulating of the multi-axis motion platform. Besides having complete mathematical simulation model for calculating reaction force variation according to the received operating command, force status and weight of the operator and having algorithm for simulating the motion of multi-axis motion platform so as to calculate the motion and instantaneous position of the multi-axis motion platform in space, the system can also provide function of force feedback for enhancing the virtual reality while being applied in various Human-Machine Interaction simulating field.

The invention discloses an industrial robot space intersecting curve welding offline programming method. The method comprises the steps that firstly, an arc welding robot and a welding workpiece three-dimensional model are guided in, two peripheral hook faces of a welding line are formed through mouse pickup, a cut plane set is created inside a workpiece coordinate system, and node pose information of the welding line is extracted; according to the node pose, position and posture discretization are achieved along the curve of the welding line, and then welding line trajectory planning is achieved through coordinate conversion; then, a joint angle sequence needed in the robot motion process is obtained through robot inverse kinematics, and motion simulation is achieved; finally, according to language rules written by corresponding robot motion control program codes, a corresponding program file is generated. By adopting an open source VTK visual tool magazine, offline programming independent development is achieved, the method does not dependent on third party CAD software, the track of the welding line can be generated only through mouse picking, no complex external data computingor guiding-in process is needed, the man-machine interaction is good, and the needed robot program can be rapidly generated.

A sports simulation robot for playing games and drills on a standard court or field during which the robot will simulate the competitive play of a human opponent with specific playing characteristics such as strategy, physicality, playing style and skill level. The robot is small enough and light enough to be easily stored, transported and deployed; has a ball storage device for retrieving, storing and dispensing the balls; can reload the balls into the ball storage device by catching them or by autonomously reloading them; has a ball firing system that is compact, lightweight and efficient, that can generate the shot dynamics that the corresponding human opponent would be capable of generating; has a drive system that makes it capable of moving around the court at speeds that are comparable to the speed of the human opponent that is being simulated; has the ability to call shots In or Out, keep the score, provide coaching, and keeps a record over time of the player's performance against different categories of simulated opponents.

A simulation experiment platform and an experiment method for motion of cord suspension parallel mechanism, mainly comprise a machine frame, a suspension platform, wire ropes, directive wheels, rope devices, plates and a detection control system. The directive wheel is installed on the top of the machine frame. One end of each wire rope is enlaced on the rope device, and the other end is connected to the suspension platform rounding the directive platform. Rope devices are installed on the plates, and the plates are fixed on the plate brackets at the two sides of the machine frame. The detection control system comprises tension sensors, stay rectilinear transducers, rotary encoders, an attitude reference, a wireless data collection launcher, a wireless data receiver, a PLC controller, a transducer and an industrial personal computer. The experiment platform can simulate the suspension platform dynamic behavior and wire rope strain change event when process during the suspension platform centroid eccentricity and wire rope operation speed out of sync, and can examine the control performance of the controller when the designed suspension platform is in a steady operation. The experiment platform and the experiment method have a tight structure, a small space usage and a high automaticity.

The invention discloses a parallel motion simulation platform with a load-bearing mechanism. The parallel motion simulation platform mainly comprises a basic platform, a motion platform, a load-bearing platform, six driving branches, a first load-bearing branch and at least three second load-bearing branches, wherein the structures of the six driving branches are totally the same, and the structures of the at least three second load-bearing branches are totally the same; the six driving branches are connected with the motion platform and the basic platform, and thus a parallel driving mechanism is formed; the first load-bearing branch and the second load-bearing branches are connected with the load-bearing platform and the basic platform, and thus a parallel load-bearing mechanism is formed; the six driving branches are all of UPS (Uninterrupted Power Supply) structures and are formed by electric cylinders, first ball hinges and first universal hinges; the first load-bearing branch is of a UPU (Uninterrupted Power Unit) structure and is formed by a balance hydraulic cylinder or balance air cylinder, a second universal hinge and a third universal hinge; and the second load-bearing branches are of the UPS structures and are formed by balance hydraulic cylinders or balance air cylinders, second ball hinges and fourth universal hinges. According to the parallel motion simulation platform disclosed by the invention, the load bearing capacity is strong, the dynamic response speed is quick, the control is simple, the parallel motion simulation platform is suitable for indoor and field environments, and additional load caused by the load-bearing mechanism is simultaneously reduced.

An experimental device for simulating free yawing / rolling movement of an aircraft in two degrees of freedom in an air tunnel mainly comprises a free yawing support rod and a free rolling support rod which are fixedly connected with a pitching mechanism. The experimental device is mainly characterized in that the central axis of the free yawing support rod and the central axis of the free rolling support rod are perpendicular to that of a pitching movement device, the three axes are intersected at one point, a rotary shaft of the yawing support rod is connected with the rolling support rod through a connecting rod and drives the rolling support rod to yaw, a rolling rotary shaft of the rolling support rod is fixedly connected with a model, and the rotary shaft of the yawing support rod and the rotary shaft of the rolling support rod are supported by bearings in the corresponding support rods and can freely move without being restrained. In order to realize yawing of the yawing support rod, a counterweight block needs to be placed on the connecting rod between the yawing support rod and the rolling support rod, and the centers of mass of the connecting rod and the rolling support rod are adjusted onto the axis of the yawing rotary shaft.