13 results about "Translational velocity" patented technology

To calibrate odometry parameters regarding differential two-wheeled vehicles by acquiring the minimum amount of measurement values required for each vehicle.SOLUTION: Along with the traveling of a vehicle, an execution control unit 70 causes an acquisition unit 62 to repeatedly acquire the measurement values of the translational speed of the vehicle, the angular speed of the vehicle, and the revolving speed of each wheel, and causes a parameter initial value calculation unit 64 to obtain the initial values of first and second parameters on the basis of the measurement values acquired in an initial value target time range. Thereafter, the execution control unit 70 causes a parameter update unit 66 to update the first and second parameters on the basis of newly acquired measurement values until an update termination condition for determining that the fluctuation of the first and second parameters are sufficiently reduced by updating is satisfied, and causes an odometry parameter calculation unit 68 to obtain an odometry parameter from the first and second parameters the updates of which have been completed.SELECTED DRAWING: Figure 5

The invention relates to a method (100) for predicting a future object representation (3) of an object (4) in an environment of a vehicle (1), comprising the following steps: - Providing (101) a first metric description of the object (4), wherein the first metric description includes at least a position of the object (4) in space and a velocity of the object (4) relative to at least a first time point, - Determining (102) a second metric description of the object (4) based on the first metric description and a motion model, in order to obtain at least one position of the object (4) in space and the velocity of the object (4) relative to a time point following the at least first time point, - Converting (103) the first and second metric descriptions into a first and a second actual object representation (3) in an image coordinate system using a transformation matrix, wherein the transformation matrix is ​​specific for parameters of at least one sensor (2) of the vehicle (1), - Determining (104) a translation velocity and a scaling rate of the object representation between the different time points based on a difference analysis between the first and the second current object representation (3), - Predicting (105) the future object representation (3) using the motion model and the determined translation velocity and scaling rate. Furthermore, the invention relates to a computer program, a device and a storage medium for this purpose.

A glider toy principally of the kick-glider genre adapted to ground launch into free flight by a user provided impact force to a rearwardly confined or linearly mobile impact surface with the main body structure configured similar to that of an aquatic water board such as the common kickboard with flat-tending surfaces contoured to impart a lift force actuated by translational velocity employing both hydrodynamic and aerodynamic principles.

This invention provides an ultrasonic bonding apparatus that reduces the probability of slippage between chips and workpieces, and between workpieces, thereby improving the quality of bonding. [Solution] The excitation operation of the ultrasonic composite element is controlled according to an amplitude instruction Qcmd that maintains the amplitude Q at an initial amplitude Qint = 0th designated amplitude Q0, while the translational operation of the ultrasonic bonding tip is controlled so that the translational speed V decreases while maintaining the translational speed V at the ith designated speed Vi (0≦i≦n) from the 0th designated speed V0 to the nth designated speed Vn (n=1). The excitation operation of the ultrasonic composite element is controlled according to an amplitude instruction Qcmd that maintains the amplitude Q at an initial amplitude Qint = 0th designated amplitude Q0, while the translational operation of the ultrasonic bonding tip is controlled so that the translational speed V increases while maintaining the translational speed V at the jth designated speed Vi (n≦i≦m) from the nth designated speed Vn to the mth designated speed Vm (m=2) as the final speed Pend.

The invention relates to a device for spreading a fibre filament bundle (1) to form a flat fibre strip, comprising a spreading roller (3) having a roller axle and a cylindrical lateral surface for contacting the fibre filament bundle (1) in a spreading manner, wherein at least one lateral surface section of the cylindrical lateral surface is provided with a groove group (5) formed by a plurality of grooves lying next to one another in the axial direction, and the grooves each have a start region and an end region, and the axial extent of the groove group (5) increases from one groove to the next from their start regions to the end regions. According to the invention, an adjustable rotary drive or an adjustable rotary brake is provided for the spreading roller (3), each of which is designed to adjust a relative speed between the translational speed of the incoming fibre filament bundle and the circumferential speed of the spreading roller. Furthermore, a method is proposed in which the spreading roller (3) is set in rotation with the aid of a rotary drive or a rotary brake, said rotation being adjustable independently of the translational speed of the fibre filament bundle (1).

A control method and recording medium for a shape measuring device, which uses a translational movement mechanism and a rotational drive mechanism to relatively move a probe and a workpiece, thereby scanning and measuring the workpiece by moving the probe along a preset scanning path. The method includes: an operator setting a scanning path and a rotation angle command for the rotational drive mechanism; dividing data regarding the scanning path into multiple segments, and setting a translational velocity pattern for the translational movement mechanism for each segment; calculating, for each segment, a rotational angle value at the start and end of the segment based on the rotational angle command, and generating an angular velocity pattern for each segment; correcting the translational velocity pattern to reduce the amount of rotation commanded by the angular velocity pattern, generating a corrected translational velocity pattern; and driving and controlling the translational movement mechanism based on a resultant velocity vector based on the corrected translational velocity pattern, while simultaneously driving and controlling the rotational drive mechanism based on an angular velocity command based on the angular velocity pattern.

The invention discloses a launching device capable of quantitatively controlling translation and rotation speeds and a working method of the launching device. The launching device comprises a translation driving system, a rotation driving system and a clamping mechanism. Wherein the translation driving system is used for driving the flying piece to translate; the rotation driving system is used for driving the flying piece to rotate; the clamping mechanism is used for clamping the flying part and releasing the flying part in time after the flying part reaches the preset initial translation speed and the rotation angular speed, and launching of the flying part is achieved. According to the launching device, the translation speed of the flying piece is independently controlled through the translation driving system, and the rotation angular speed of the flying piece is independently controlled through the rotation driving system, so that the two speeds can be independently quantified and do not influence each other. And moreover, the flying part is clamped by the clamping part, and the shape of the flying part does not need to be limited through a driving mode of driving the flying part to rotate by the motor, so that the flying part has higher universality. The invention relates to the technical field of aerodynamic tests.

This control device controls the driving of a two-wheel inverted robot comprising a pair of wheels, a wheel motor that outputs torque for rotating the wheels to an axle, a body which is attached to the pair of wheels and can swing around the axle, and a placement part on which a load is placed. The control device comprises a load disturbance compensation unit that calculates and outputs a compensated pitch angle command value obtained by compensating gravity-dependent variation on the basis of a dynamic model, the compensated pitch angle command value being calculated on the basis of: a pitch angle command value for controlling the behavior of pitch angle, which is the angle between the vertical axis of the body and the vertical direction, so as to maintain an inverted orientation of the two-wheel inverted robot; information about the load weight applied to the placement part by the load; and the translational velocity of the wheels obtained by first-order differentiation of wheel position, calculated from a detection value of wheel angle, with respect to time. As a result, provided is a control device that does not require tuning for control for stabilizing orientation when placing a load.

The invention belongs to the technical field of rail transit, and discloses a wheel-rail rolling contact finite element analogue simulation fast convergence method which comprises the following steps: S1, establishing a geometric model; s2, geometric cleaning and grid division are carried out; s3, applying conditions and performing contact setting; wherein the sprung mass is simplified into mass points to be applied to the finite element model; s4, implicit analysis: applying gravitational acceleration to the model to enable the system to reach a static equilibrium state, and then applying rotation torque to the wheels to obtain radial displacement and stress strain; s5, explicit analysis: importing displacement and stress-strain information into the finite element model as initial conditions, applying a rotation angular velocity to the wheel, applying a translational velocity to the center of the wheel and the suspension mass, and simulating wheel-rail rolling contact; according to the method, the wheel-rail system can be quickly stabilized in the wheel-rail rolling contact finite element simulation, the calculation efficiency is high, and the initial excitation disturbance of the wheel-rail system can be remarkably reduced while the model precision is ensured.

This application provides a self-motion estimation method and related apparatus. The method includes: acquiring a first rotational velocity vector ω of the sensor's self-motion. s The normalized or scaled first translational velocity vector is based on the first rotational velocity vector ω. s The first translational velocity vector and the external parameters of the sensor determine the second rotational velocity vector ω of the carrier. e Second translational velocity vector t e In this embodiment, the carrier is the carrier on which the sensor is located. The external parameters of the sensor include the transformation relationship between the sensor coordinate system and the carrier coordinate system. By adopting the embodiments of this application, the motion speed of the carrier on which the sensor is located or the sensor can be determined, thereby improving the accuracy of the self-motion estimation of the carrier on which the sensor is located or the sensor, and thus improving the safety of assisted driving, autonomous driving or unmanned driving.

The disclosure relates to a mobile robot and a control method therefor, and a controller. The mobile robot includes: a controller. The controller executes a program instruction so as to implement the following steps: receiving an angular velocity, a translational velocity, a first distance, and a second distance of the mobile robot (1); controlling motion of a first wheel (501) of the mobile robot (1) according to the angular velocity, the translational velocity, and the first distance; and controlling motion of a second wheel (502) of the mobile robot (1) according to the angular velocity, the translational velocity, and the second distance, where the motion of each wheel includes driving rotation and steering rotation.

The application discloses a launching device capable of quantitatively controlling translational and rotational speeds and a working method thereof. The launching device comprises a translational driving system, a rotational driving system and a clamping mechanism. The translational driving system is used for driving a flight piece to translate; the rotational driving system is used for driving the flight piece to rotate; and the clamping mechanism is used for clamping the flight piece and timely releasing the flight piece after the flight piece reaches preset translational initial speed and rotational angular speed, so as to realize launching of the flight piece. The launching device controls the translational speed of the flight piece through the translational driving system and controls the rotational angular speed of the flight piece through the rotational driving system, so that the two speeds can be quantitatively controlled without affecting each other. Moreover, the flight piece is clamped through the clamping piece and is driven to rotate through the motor, so that the shape of the flight piece is not limited, and the launching device has higher universality. The application relates to the technical field of aerodynamic test.

The subject of the present invention is a safety braking device (1) for a steering system (100) of a vehicle, comprising a cylinder (2) that delimits a housing (3), a piston (4) housed in the housing (3) of the cylinder (2), wherein the piston (4), together with the housing (3), delimits a first chamber (5) and a second chamber (6), at least one connection element (7) configured to fluidically connect the first chamber (5) and the second chamber (6), wherein the first chamber (5), the second chamber (6), and the connection element (7) are configured to contain a working fluid (F), wherein the piston (4) is translatably movable in the housing (3) of the cylinder (2) by moving the working fluid (F) through the at least one connection element (7) from the first chamber (5) to the second chamber (6), and / or vice versa, wherein the piston (4) is indirectly connectable to a steering wheel (101) of the steering system (100) such that a rotation of the steering wheel (101) is transformed into a translation of the piston (4) in the housing (3) of the cylinder (2), and vice versa, and such that a translational speed of the piston (4) and a rotational speed of the steering wheel (101) are mutually correlated, wherein the safety braking device (1) comprises fluid resistance means (8, 9) arranged along the at least one connection element (7), wherein the fluid resistance means (8, 9) are configured to selectively control a fluid flow rate of the working fluid (F) from the first chamber (5) to the second chamber (6), and vice versa, such that when the fluid flow rate of the working fluid (F) is below a threshold flow rate and / or the translational speed of the piston is below a threshold translational speed and / or the rotational speed of the steering wheel is below a threshold rotational speed, the working fluid (F) passes through the at least one connection element (7) from the first chamber (5) to the second chamber (6), or vice versa, without hindering the translation of the piston (4) and the rotation of the steering system (100), and when the fluid flow rate of the working fluid (F) reaches the threshold flow rate and / or the translational speed of the piston reaches the threshold translational speed and / or the rotational speed of the steering wheel reaches the threshold rotational speed, the working fluid (F) is hindered or blocked from passing through the at least one connection element (7) from the first chamber (5) to the second chamber (6), or vice versa, thereby hindering or blocking the translation of the piston (4) and the rotation of the steering system (100).