5 results about "Translational velocity" patented technology

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).

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.

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.