32 results about "Lateral drift" patented technology

A flight control system includes a primary flight display having a hover display which facilitates operations in DVE conditions. The hover display includes a radar altitude display, heading drift symbology and lateral drift symbology which assists pilots in the detection of drift, which is common in DVE situations and to provide the pilot with a salient cue pertinent to the approach to hover and landing.

System for evaluating the driving environment of a motor vehicle and for influencing the speed of the motor vehicle, with an electronic control unit (ECU) which is connected to a signal transmitter generating a signal characteristic of the desired speed of the motor vehicle, a signal transmitter generating a signal characteristic of the rate of revolutions of the motor vehicle about its vertical axis, a signal transmitter which generates a signal characteristic of objects located in the area in front of the motor vehicle in the direction of travel of the motor vehicle in respect of their distance from and orientation to the motor vehicle, which is the speed relative to the speed of one's own motor vehicle and/or the distance relative to one's own motor vehicle and/or the angle offset or the lateral drift relative to the vehicle longitudinal axis of one's own motor vehicle, and a signal transmitter generating a signal characteristic of the speed of at least one wheel of the motor vehicle and which electronic control unit (ECU) is connected to at least one control device having an influence on the driving behaviour of the motor vehicle, in order to feed to it output signals derived from the driving behaviour of the target motor vehicle located in front of one's own motor vehicle, in which, if a target motor vehicle leaves the detection area in front of one's own motor vehicle, in the electronic control unit a trigger signal is generated which limits the momentary speed or momentarily the acceleration of one's own motor vehicle at least for a stretch to a value substantially corresponding to a maximum of the distance X between one's own motor vehicle and the target motor vehicle at the time of leaving the detection area.

A mount comprising a connecting portion attachable to a firearm, a first member connected to the connecting portion to be rotatable about a first axis, a second member connected to the first member to be rotatable about a second axis substantially perpendicular to the first axis, and an attachment system connected to the second member for receiving an accessory. Also, a mount attachable to a firearm and having a dampener system connected to base and body portions thereof, the dampener system acting to dampen a recoil force produced by the firearm. Further, a mount attachable to a firearm and allowing a first rotation varying an azimuth of an accessory and a second rotation varying an angle of elevation of the accessory, and control means adjusting the second rotation to obtain a desired value and automatically producing the first rotation to correct a lateral drift of the firearm.

This invention generally relates to LIGBTs, ICs comprising an LIGBT and methods of forming an LIGBT, and more particularly to an LIGBT comprising a substrate region of first conductivity type and peak dopant concentration less than about 1×10¹⁷/cm³; a lateral drift region of a second, opposite conductivity type adjacent the substrate region and electrically coupled to said substrate region; a charge injection region of the first conductivity type to inject charge toward said lateral drift region; a gate to control flow of said charge in said lateral drift region; metal enriched adhesive below said substrate region; and an intermediate layer below said substrate region to substantially suppress charge injection into said substrate region from said metal enriched adhesive.

The invention relates to a sideways drift correction device for a mobile production machine comprising a removal of material and a tool for processing the removed material, having a sensor component and an evaluation component. The sensor component detects the structure of at least one part of the underground surface relative to which the production machine moves. The evaluation component determines the relative motion direction of a reference point on the production machine relative to the subsoil from the time-variable information of the underground surface, and derives steering correction information therefrom.

The invention discloses a wind-direction-based agricultural unmanned aerodynamic ship path planning method, which comprises: acquiring the position coordinate information of paddy field edge corner points; according to the steering radius of an aerodynamic ship and a rice planting situation, setting a safe distance between a working area and the paddy field edge; monitoring wind direction information by using a wind direction sensor, and carrying out standard value treatment on the wind direction; according to the wind direction information, setting the initial path direction, the initial steering and the path line spacing of aerodynamic ship in the working area; finding the paddy field edge corner point nearest to the first path, and establishing a straight line, wherein the straight linepasses through the corner point and is parallel to the initial path direction; and planning n paths parallel to the straight line in the working area according to the initial steering and the path line spacing, and completing the path planning in the working area when the number of the intersection points of the path and the boundary of the working area is less than 2. With the method of the present invention, the interference of the external wind on the heading of the unmanned aerodynamic ship can be substantially reduced, and the lateral drift during the navigation can be reduced.

The invention discloses a state variable full-constraint direct yawing moment control algorithm based on a pavement adhesion coefficient, and the algorithm introduces the concept of a barrier Lyapunov function (BLF) into the design of a direct yawing moment controller. In the design process of the controller, safety constraint boundaries of two state variables of a side slip angle and a yaw velocity brought by a pavement adhesion coefficient are considered, and the side slip angle and the yaw velocity are constrained at the same time based on the pavement adhesion coefficient. Therefore, it is fundamentally guaranteed that the side slip angle and the yaw velocity do not violate constraint conditions in tracking control, the unstable working conditions of drifting, transverse drifting and the like caused by the too large side slip angle and the too large yaw velocity of the automobile under the limit working condition are fundamentally avoided, and the transverse stability of the automobile in the running process is improved. Meanwhile, the direct yawing moment full-state constraint controller has shorter tracking convergence time under the condition that constraint conditions are not violated, and the possibility of dangerous working conditions is reduced.

In a lateral thin-film Silicon-On-Insulator (SOI) device, a field plate is provided to extend substantially over a lateral drift region to protect the device from package and surface charge effects. In particular, the field plate comprises a layer of plural metallic regions which are isolated laterally from one another by spacing so as to assume a lateral electric field profile which is established by a volume doping gradient in the silicon drift region.

The invention discloses a synchronous rising and landing system of a high-temperature superconducting maglev train and a cooling method. The synchronous rising and landing system comprises a synchronous rising and landing unit and an auxiliary supporting mechanism. In the field cooling process of the high-temperature superconducting maglev train, synchronous field cooling of a plurality of suspension Dewares can be achieved, the positioning precision between the suspension Dewares and a permanent magnet track is effectively improved, the defects of unbalanced bearing performance distribution, suspension force attenuation, transverse drifting, side rolling and the like caused by vertical and transverse positioning errors and asynchronous field cooling are overcome, the suspension guiding performance, stability, reliability and safety of the distributed and large-bearing-capacity high-temperature superconducting maglev train are improved, and the system and method have high application value in the fields of high-speed electromagnetic emission and maglev transportation.

The invention discloses an under-actuated unmanned ship cluster cooperative guidance structure and a design method. The structure comprises a cooperative error calculation module, a path parameter update module, a speed feedforward module, a controller and a speed conversion module. The structure has a high application value in practical application for the control method of a under-actuated unmanned ship. The structure uses a parameterized path which is updated synchronously according to a tracking error, can realize the synchronous update of multiple paths and the adjustment of a reference path point in a control process, and avoids the problem that the under-actuated unmanned ship cannot catch up with a target trajectory. The structure considers the influence of the lateral drift speedof the under-actuated unmanned ship on the coordinated control, and can solves the problem that the under-actuated unmanned ship has an increased tracking error or frequently deviates from the trajectory due to the lateral drift speed. The method belongs to a distributed control method and is more advantageous than centralized control in a cooperative control application of a large-scale under-actuated unmanned ship.

The present invention discloses a TOF image sensor demodulation pixel structure with rapid charge transfer. The structure comprises a PPD-based dual-floating-diffusion-node 4T pixel unit which comprises two transfer tubes responsible for transferring photocharges from a PPD to double FD nodes and is characterized in that multiple adjacent polysilicon gates with a minimum width are employed by a gate of each of the transfer tubes, the multiple polysilicon gates are connected to a resistor array and are powered by the resistor array such that the polysilicon gates have increasing gate voltages,and the gate voltages are coupled to a semiconductor through a capacitor to form a lateral drift electric field. According to the invention, the gates of the polysilicon gates are substituted with multiple adjacent polysilicon gates with the minimum width, the increasing gate voltages are applied to the gates to form the lateral drift field of the photocharges under the gates of the transfer tubes, and the transfer of the photocharges is accelerated.

The invention relates to adaptive design without a service tower and an oscillating bar for a low-temperature rocket power system. The adaptive design comprises the following steps that all air supply, liquid supply and exhaust ports of the rocket power system are led to the bottom of a rocket; two withdrawing devices are arranged at the two sides of the rocket, a plurality of connectors are arranged and fixed to the withdrawing devices, the connectors are used for being in butt joint with the ports in the rocket testing and launching preparation stage, and air supply, liquid supply and exhaust are conducted on the rocket; and before the rocket is launched, the connectors automatically fall off, the withdrawing devices automatically and quickly withdraw out of the safety distance of the rocket, and the rocket is ignited to take off. The withdrawing devices are remotely controlled and at automatically withdrawn to a safe distance before launching. According to the design of a launching support system, the service tower and the oscillating bar do not need to be built, a ground launching support system is simplified, the design and construction of a launching site are simpler, the rocket launching cost is reduced, meanwhile, due to the fact that the service tower or an umbilical tower is not arranged, transverse drifting of the rocket after takeoff is not limited, and the takeoff safety is improved.

The embodiment of the invention discloses a method and device for correcting transverse drift of an automatic driving vehicle, and the method comprises the steps: planning a path according to the current pose of the vehicle and a target point, and enabling the vehicle to run along the planned path; comparing the driving track of the vehicle with the planned path; when the transverse drift of the vehicle exceeds a threshold value, judging whether the transverse drift of the vehicle is continuously constant or not; when the transverse drifting of the vehicle is continuously constant, an instruction which is issued to a chassis of the vehicle and is used for indicating the speed of the vehicle is obtained, modifying a speed value in the instruction, and issuing the modified speed value to the chassis of the vehicle so as to correct the continuously constant transverse drifting of the vehicle. According to the scheme provided by the embodiment of the invention, dynamic compensation is carried out according to the current transverse drift, continuous transverse drift is effectively avoided, the real-time performance is good, the effect is remarkable, and a guarantee is provided for automatic driving to better execute a planned path.