30results about How to "Prevent yaw" patented technology

A truck bed cargo barrier for use with a truck bed for stabilizing cargo items longitudinally and laterally. The cargo barrier is slidable relative to the front and back of the truck bed along a track system. The cargo barrier may be locked in a user specified position along the track system to accommodate the size of the load being carried forming a divider, or may be flipped up into a temporary storage position for linear cargo exceeding the length of the bed. Tie down brackets for bungee cords are adjustably attached to the barrier frame to secure cargo laterally. A barrier panel is connected to laterally adjustable, rigid side plates, each including two spaced apart wheels that ride on a pair of longitudinal tracks on the side walls of the truck bed. The spaced apart wheels firmly secure the barrier panel in a vertical position. A manual actuator permits manual positioning of the barrier panel along the bed frame front to back.

The invention relates to a vehicle-mounted inertial navigation system. According to the system, GPS/DR/MM technologies are combined for vehicle-mounted inertial navigation, vehicle speed pulse signals do not need to be collected, information is directly read through a CAN bus of a vehicle sound port, and vehicle refitting is avoided. The system comprises a main processor MCU, a gyroscope, a GPS and a map, dynamic compensation is adopted for gyroscope zero offset errors, an HDR algorithm is adopted for random drift errors for compensation, the system does not only depend on data basis that inertial navigation is achieved by reading vehicle body information, GPS positioning information and DR system positioning information are further corrected through the map matching technology, and therefore overall vehicle safety and navigation positioning reliability are improved.

The invention provides a full-automatic cruising batch feeding ship for a prawn pond. The ship comprises a ship body, a fodder box, a batch feeding controller, a distance detector and a solar cell panel. The ship body is of a double-body three-propeller structure. An engineering plastic mould is used for injection moulding. Good corrosion resistance, stability and wind wave resistance are achieved. A GPS locating instrument is arranged in the ship body and can effectively prevent the ship from yawing during traveling. A wind turbine and a feeding locking device are arranged in the batch feeding device, feeding amount can be controlled according to needs, and prawn fodder is evenly and accurately thrown to feeding points of prawns. The ship is suitable for carrying out batch feeding in ponds with different shapes and different sizes, batch feeding effect is good, the solar cell panel is used as a driving energy source, environment pollution is lowered, and energy is saved. The ship has the advantages that batch feeding is automatic, manual operation is of no need, energy loss is reduced, and labor cost is lowered.

The invention discloses an adaptive control method of an autopilot of a ship and relates to the technical field of automatic control of the ship. The method comprises the steps of: firstly, carrying out wave model identification; updating the upper limit and the lower limit of a controller pipeline so as to calculate controlled quantity; further judging that if the wave model is in a still water area, the model validation is not passed; then, carrying out ship model identification; updating a controller; and carrying out the next control. According to the invention, the self-setting function of the autopilot is automatically finished without personnel to participate and can automatically identify the sea state grade, so that adaptive heading control under wave interference is achieved, and the control performance of the heading of the ship is improved.

The invention relates to an automatic fishing vessel and a working method thereof. The automatic fishing vessel comprises two unit hulls, a water wheel transverse telescopic rod and two groups of netcover assemblies capable of transversely and longitudinally expanding and retracting; a detachable fish cabin is arranged at the middle part of each unit hull; the water wheel transverse telescopic rod is erected between the middle parts of the two unit hulls and is driven by a water wheel driving machine to rotate along its axial direction; the two groups of net cover assemblies are symmetricallyarranged on the water wheel transverse telescopic rod with the water wheel transverse telescopic rod as the symmetric axis; a telescopic fish body slip groove is formed in one side, close to the water wheel transverse telescopic rod, of each group of net cover assembly; and one end of each telescopic fish body slip groove is arranged to be inclined towards the detachable fish cabin. Compared withthe prior art, the automatic fishing vessel has the advantages of ingenious design, high feasibility and automatic, simple, convenient and user-friendly use. The automatic fishing vessel has the advantages that the structure is special, the labor intensity of fishers is effectively reduced, the fishing efficiency is enhanced, and fish bodies are prevented from being injured so that lives get humanistic care and fishes can be fresher and live longer.

The invention discloses a photovoltaic panel hot spot positioning method based on an unmanned aerial vehicle and thermal imaging. The method comprises the following steps of: measuring the position information of a photovoltaic module through a GPS positioning instrument, and storing the position information into a database; calculating the total row number of photovoltaic panels in the photovoltaic module according to the collected position information of the photovoltaic module; controlling the flight of the unmanned aerial vehicle, and correcting the flight path of the unmanned aerial vehicle by using the position information of the four corner points of the photovoltaic module in the flight process; identifying and segmenting a single photovoltaic panel in an aerial image by using an image algorithm, and positioning the column number of the photovoltaic panels in the photovoltaic module; and performing judgement through a signal receiving device on the unmanned aerial vehicle so as to start an infrared camera, and detecting hot spots in real time, and processing the hot spots to obtain the position information of the hot spots. According to the method, automatic inspection of the unmanned aerial vehicle is fully utilized, automatic positioning of the hot spots is achieved, correction of the flight path of the unmanned aerial vehicle is achieved, calculation is convenient, the detection efficiency is high, and a photovoltaic power station can operate more efficiently and intelligently.

The invention provides a course guiding device based on Internet of Things, which comprises a fixed base, a fixed column is fixedly connected to the surface of the fixed base, a connecting assembly is arranged at the bottom of the surface of the fixed column, the connecting assembly comprises a connecting seat, a placing box is fixedly connected to one side of the connecting seat, and a whistling device is arranged in the placing box. A pressing device is arranged on the left side of the inner wall of the containing box, and a control device is arranged on the top of the inner wall of the placing box. According to the course guiding device based on the Internet of Things, when a ship travels on the sea surface with visibility, direction guiding can be conducted through sound transmission through cooperation between the whistling device and the pressing device, an operator can conveniently distinguish the direction through long sound transmission and high penetrating power by using a whistle, the danger that the ship yaws or touches a submerged reef can be prevented, the whistling device can be controlled through the control device, and the device can be in an automatic working state.

The present invention relates to a bullet. More particularly, the present invention relates to a bullet including concentric and sequentially ordered cylindrical fore, intermediate and aft portions. The aft portion comprises a cross-sectional diameter about equal to the diameter measured across the rifle landings of the riffled barrel operatively to create a gas pressure build up there-behind while the rifling grooves and lands deform and/or cut the aft portion thereby to impart spin to the bullet about the central axial axis thereof. The intermediate portion comprises a cross-sectional diameter smaller than that of the aft portion, which acts as a bearing surface for operatively riding along the rifling lands thereby to inhibit yawing of the bullet while operatively travelling through the rifled barrel. The fore portion comprises a cross-sectional diameter smaller than that of the intermediate portion with an annular stamping surface, for operatively providing a clean cut circular hunting wound, located at or near an interface between the fore and intermediate portions.

A tracked vehicle for preparing a ski track is provided. A tracked vehicle (1) comprises: a frame (2); a winch (12) mounted on the frame (2) for selectively deploying and winding a rope (13) that can be anchored to a point (14) outside the tracked vehicle (1); an arm (16) mounted to rotate relative to the frame (2) about a defined axis (A2) and configured to guide the rope (13); an actuation system (17) of the arm (16) around a defined axis (A2); control means (18) of an actuation system (17) of the arm (16) for selectively setting, when the rope (13) is under tension, one of the following operating modes: allowing the arm (16) to rotate freely about a determined axis (A2); rotating the arm (16) about a defined axis (A2); the position of the arm (16) relative to the frame (2) is locked.

The present invention relates to the field of floor treatment machines for scrubbing, polishing, sanding or burnishing floors, and in particular machines in which one or more driven rotatable work heads (such as scrubbing brushes) are provided for agitating the floor surface. In one aspect there is provided a walk-behind floor treatment machine comprising: a base portion provided with and supported by at least one rotatable work head for treating the floor, a handle portion for steering or guiding the machine along a working direction of travel and adapted to be pivotable with respect to the base portion, drive means for rotating the work head with respect to the base portion, floor-engaging wheel means for supporting the handle portion, the wheel means having a substantially transverse axis of rotation so as to permit travel in the working direction, the wheel means being coupled to the base portion by a linkage which permits vertical travel of the base portion and associated work head or heads with respect to the wheel means, but which provides transverse constraint to limit or prevent yawing of the base portion with respect to the wheel means, wherein a lower region of the handle portion is pivotably connected to the wheel means via an articulated joint, the arrangement being such that the handle portion may be manipulated to act on the wheel means so as to yaw steer the wheel means about a yaw axis defined by the floor-engaging contact of the wheel means, the yawing of the wheel means causing the base portion to yaw in response to yaw steering. The wheel means may comprise a wheel, roller or ball, preferably a single wheel, roller or ball, disposed at a lower region of the handle portion. The wheel means preferably has a fixed transverse axis of rotation.

The embodiment of the invention discloses a voice navigation method, electronic equipment and a computer program product. The method comprises the following steps: acquiring a navigation route and voice navigation content; the voice navigation content comprises voice content and voice broadcast time; broadcasting the voice content on the basis of the voice broadcasting opportunity in the driving process of the navigated object on the basis of the navigation route; and after the voice content is broadcasted, dynamically adjusting the voice content of the next voice broadcasting time based on the behavior feedback information of the navigated object. According to the technical scheme, the problem that the user is likely to yaw when the existing fixed voice broadcasting time and the fixed voice content are adopted under the condition that the user is inattention in the driving process can be avoided, the yaw rate of the user can be reduced, and the navigation experience of the user is improved.

The invention relates to the technical field of vehicles, in particular to a control system and method for an automatic driving vehicle and the vehicle, the control system is provided with a processing part used for generating main sensing data through collected environment data and a control part used for generating an automatic driving instruction through the main sensing data, wherein the control part comprises a processor for generating secondary sensing data according to environment data; a judging device which is used for judging whether the control piece receives the main sensing data sent by the processing piece or not, and judging that the processing piece is in a failure state when judging that the main sensing data is not received; and a controller which is used for generating an automatic driving instruction according to the secondary sensing data when the judgment device judges that the processing part is in the failure state, and controlling the automatic driving vehicle to execute an automatic driving action by utilizing the automatic driving instruction. Therefore, the problems that in the related technology, when the second industrial personal computer is in the failure state, the automatic driving vehicle is prone to yawing and cannot avoid obstacles, the reliability and safety of automatic driving are low, and the user experience is poor are solved.

The invention discloses an intelligent unmanned aerial vehicle cluster control system for wide-area forest protection, and the system comprises a ground general control module, an acquisition module, a receiving display module, a line control module, and a cluster association module. The collection module collects forest data through a collection device, and the receiving display module receives the data collected by the unmanned aerial vehicles and displays the data content. Through grouping association of a plurality of unmanned aerial vehicles, setting of a specified navigation range and management of starting and stopping of the collection device, collection and distribution of the unmanned aerial vehicles are reasonable, and the unmanned aerial vehicles fly in a certain range; through the mutual monitoring of the associated unmanned aerial vehicles, the abnormal condition of the unmanned aerial vehicle is found in time, the abnormal unmanned aerial vehicle can be monitored and searched in time, data damage is avoided, the collection mode is replaced, the completion of the collection task is ensured, and the collection efficiency of the unmanned aerial vehicle is higher.

The invention discloses an emergency yawing circuit and method for out-of-control rotation speed of a wind turbine generator. The circuit comprises a first speed relay, a first non-time-delay relay, acontactor and a first time-delay relay. A first normally open contact of the first non-time-delay relay, a normally closed contact of the first time-delay relay and a coil of the contactor are connected in series to form a series branch; the series branch is connected with a power supply; a normally open contact of the contactor is connected with a yawing device; a first contact of the first speed relay and a second normally open contact of the first non-delay relay are connected in parallel to form a first parallel branch; a second contact of the first speed relay is connected with a coil ofthe first non-delay relay in series and then connected with a coil of the first delay relay in parallel to form a second parallel branch; and the first parallel branch and the second parallel branchare connected in series and then connected with the series branch in parallel. By the adoption of the circuit and method, yaw processing can be conducted on out-of-control with the rotating speed larger than the rated rotating speed, and the wind turbine generator is prevented from yawing excessively.