10results about How to "Reduce acceleration" patented technology

The invention provides a scribing method and device and a storage medium. The scribing method comprises the steps that the radius of a cutter, the maximum cutting depth of the cutter to a wafer and the target cutting groove length are obtained; the initial feeding speed of the cutter and the middle section scribing speed of the cutter are determined, and the middle section scribing speed is larger than the initial feeding speed; calculating the feed stroke of the cutter based on the radius of the cutter and the maximum cutting depth; based on the target grooving length and the feed stroke, calculating the middle stroke of the cutter; calculating acceleration based on the initial feed speed, the middle scribing speed and the feed stroke; the cutter is controlled to cut into the wafer at the initial feeding speed and the accelerated speed in an accelerated mode; the cutter is controlled to cut the wafer at the middle section scribing speed until the cutting stroke of the cutter reaches the middle section stroke; and controlling the cutter to cut the wafer at the middle section scribing speed and the accelerated speed. According to the scribing method, the scribing efficiency can be ensured, the scribing quality is also considered, and edge breakage caused during cutter feeding and cutter discharging is prevented.

The utility model discloses a chip adsorption device which comprises an adsorption base, an air guide pipe is installed at the top end of the adsorption base in a threaded mode, a main suction cup and an auxiliary suction cup are installed at the bottom end of a main air channel and the bottom end of an auxiliary air channel respectively, a base plate is fixedly installed at the bottom of the outer side wall of the adsorption base, and a vertical threaded rod is installed in a hole formed in the base plate in a penetrating mode. A bottom plate is fixed to the bottom end of the vertical threaded rod, a protective pad is installed on the bottom face of the bottom plate, the top end of the vertical threaded rod penetrates through a hole formed in the movable plate, a blocking plate is fixed to the middle of the vertical threaded rod, a buffer spring is fixed to the top face of the blocking plate, and the top end of the buffer spring is fixed to the bottom face of the movable plate. According to the chip adsorption device, the novel structural design is adopted, chips of different sizes can be stably adsorbed, the chips moving upwards due to air pressure can be buffered and protected, meanwhile, the resistance of the buffering structure can be conveniently and rapidly adjusted, and the chips of different specifications can be stably adsorbed and transferred conveniently.

The present invention relates to the field of motors or electric vehicles, and specifically to a slow-start permanent magnet motor, which is provided with a position detection disk, a time-controlled conduction switch and an inertial feedback device. The time-controlled conduction switch is driven by the inertial feedback device to change the position detected by the inertial feedback device, thereby realizing the control of the on-off time of the time-controlled conduction switch by the conduction hole of the position detection disk, thereby achieving the purpose of controlling the output momentum. The present invention can effectively reduce the acceleration at startup, ensure driving safety, and effectively reduce the current at startup, thereby extending the service life of the motor.

The present invention belongs to the technical field of bus rollover collision safety, and specifically relates to a bus rollover collision energy absorption structure with efficient and reasonable energy absorption characteristics during rollover collision. The structure includes a diagonal brace beam, a bent beam, a first energy absorption box, a second energy absorption box, a third energy absorption box, and a fourth energy absorption box, and each component of the structure is connected by welding. Among them, the diagonal brace beam and the bent beam are made of "day"-shaped hollow steel pipes. Among them, the first, second, third, and fourth energy absorption boxes are all composed of rectangular cross-section thin-walled trapezoidal steel pipes. To accurately control its energy absorption mode and the maximum bearing capacity during axial crushing, trapezoidal induction grooves are provided on the pipe wall, and the induction grooves are only provided in two wider planes of the energy absorption box symmetric about the central axis, and no induction grooves are provided on the other two planes. The present invention is a high-efficiency energy absorption structure specifically used for absorbing collision energy during the rollover of a bus, so as to minimize the collision energy transmitted into the occupant survival space and protect the safety of the occupants.

The present invention relates to a method for adjusting requested vehicle torque. A method for adjusting a powertrain torque output of a vehicle is described. In one example, the powertrain output torque of the vehicle is reduced by switching from a first curve of a transfer function to a second curve of the transfer function and then adjusting the powertrain output in response to the second curve of the transfer function.

The invention relates to the technical field of car seats, and discloses a car seat capable of preventing carsickness. The bottom frame is arranged on the first sliding rail in a front-back sliding mode, and the mounting support is arranged on the bottom frame in a front-back sliding mode; the damping system is arranged between the bottom frame and the installation support and comprises a forward compression spring, a backward compression spring and a magnetorheological damper, and when the automobile seat is located at the initial design position, the installation support slides forwards relative to the bottom frame, the forward compression spring is compressed, and damping of the magnetorheological damper is changed; when the mounting bracket slides backwards relative to the underframe, the backward compression spring is compressed, and the damping of the magnetorheological damper is changed; the left lifting mechanism can drive the left side of the sitting basin to ascend and descend, and the right lifting mechanism can drive the right side of the sitting basin to ascend and descend. The anti-carsickness automobile seat has the advantage that the anti-carsickness effect of the automobile seat is good.

The invention relates to the technical field of safety protection of high-speed movement equipment, in particular to an acceleration protection method and device for prolonging an acceleration distance based on relative movement. The device comprises a power main body, a protected carrier and a controllable relative movement mechanism, the controllable relative movement mechanism is connected between the power main body and the protection carrier; wherein the controllable relative movement mechanism is used for controlling the protected carrier to generate linear relative displacement matched with the acceleration of the power main body in the opposite acceleration direction when the power main body accelerates, so that the effective acceleration distance of the protected carrier is prolonged. On the premise that the equipment size is not increased, the impact protection problem under the high acceleration working condition is physically and essentially solved.

The application discloses a meal delivery cabinet, method and storage medium, which is used for automatically providing corresponding meal products to a meal serving port according to needs, and comprises a plurality of conveying channels arranged in a cabinet body and used for conveying meal products, and a transfer tray used for receiving the meal products conveyed from the conveying channels, and further comprises a conveying device used for conveying the transfer tray between the conveying channels and the meal serving port, the transfer tray is provided with a blocking body opposite to the conveying channels and a distance detection device used for detecting the distance between the blocking body and the meal products on the transfer tray. The sensor is arranged on the conveying device, different conveying speed change processes are adopted according to the position state of the meal products on the conveying device, so that better conveying speed and stability are obtained.

The present invention relates to the technical field of coating machines, and in particular to a gap coating machine for lithium battery production, wherein a reeling mechanism, a connecting assembly, an upper tensioning roller, a buffer assembly and a coating die are arranged in sequence along the conveying direction of a foil strip; the buffer assembly comprises a horizontal sliding seat assembly and two buffer material rollers; two connecting rods are hinged on the horizontal sliding seat assembly; the two connecting rods are respectively hinged on the lifting sliding seats of the two buffer material rollers; the sliding seat body is slidably connected to a horizontal guide rail; the two connecting rods are symmetrically arranged on the upper and lower sides of the horizontal guide rail; a counterweight is arranged on a lifting sliding seat on the lower side of the horizontal guide rail. When the present invention is used, the deformation of the foil strip caused by excessive stretching can be reduced, and the present invention can be applied to coating of more types of foil strips and reduce the instantaneous impact force on the foil strip.

The invention relates to the technical field of vacuum circuit breakers, in particular to a spring operating mechanism of a vacuum circuit breaker and the vacuum circuit breaker. The spring operating mechanism of the vacuum circuit breaker comprises a closing speed regulation device, and in the closing process, a driving speed regulation gear in the closing speed regulation device drives a driven speed regulation gear to rotate and enables a speed regulation spring to have three conversion processes, namely an initial stretching energy storage state to an early-stage retraction energy release state in sequence; when the speed regulating spring is in the maximum stretching energy storage state, the cam shaft is in the just closed corresponding position from the early-stage retraction energy release state to the maximum stretching energy storage state and from the maximum stretching energy storage state to the later-stage retraction energy release state; in the energy storage process, the speed regulating spring is sequentially switched from the later retraction energy release state to the maximum stretching energy storage state and from the maximum stretching energy storage state to the initial stretching energy storage state. The characteristics of the vacuum circuit breaker are matched through the staged action mode of the speed regulating spring, and the technical problem of matching the closing characteristics of the vacuum circuit breaker and the spring operating mechanism is solved.