100results about How to "Light steering" patented technology

The invention provides a steer-by-wire system and a stability control method thereof. The steer-by-wire system comprises a steering wheel module, a front wheel steering module and an ECU electronic control unit, wherein the ECU electronic control unit comprises a variable transmission ratio controller, a fuzzy self-adaptive PID controller and a full state feedback controller. The stability control method is as follows: the variable transmission ratio controller calculates an ideal transmission ratio at the moment according to a steering wheel rotation angle signal and a vehicle speed signal, to obtain an ideal front wheel rotation angle at the moment; the full state feedback controller of an automobile calculates a compensation rotation angle of front wheels according to a yaw rate signal and a lateral acceleration signal of the automobile, to realize the outer ring control of the steer-by-wire system; and finally the fuzzy self-adaptive PID controller is designed, to realize the inner ring control of the steer-by-wire system. The operating stability of the automobile is effectively improved through the coordinated control of inner and outer rings of the steer-by-wire system.

The invention provides an electric power-assisted steering system of an electric vehicle. The electric power-assisted steering system comprises an electric power-assisted steering controller, a power-assisted electromotor, an electromagnetic clutch, a speed changer and a torque sensor which is arranged on an input shaft of a steering gear of the electric vehicle, wherein an input end of the speed changer is connected with a steering wheel of the electric vehicle by an input shaft; an output end of the speed changer is connected with a cardan joint by an output shaft; the cardan joint is also connected with a wheel gear which is meshed with a rack; the rack is connected with wheels of the electric vehicle; the power-assisted electromotor is connected with the electromagnetic clutch which is also connected with the speed changer; an output signal of the torque sensor, an output signal of a vehicle speed sensor of the electric vehicle and an output signal of a revolution speed transducer of a driving motor of the electric vehicle are respectively connected with an input end of the electric power-assisted steering controller; and an output end of the electric power-assisted steering controller is respectively connected with the power-assisted electromotor and the electromagnetic clutch.

The invention discloses an all-wheel drive walking mechanism of a biomimetic six-wheeled leg and aims to solve the problem that a plurality of sensors and complex control logic are adopted by the prior art. The all-wheel drive walking mechanism of the biomimetic six-wheeled leg comprises a front automobile frame, a back automobile frame, a middle freedom degree junction device, wheel legs and driving combination bodies. The wheel legs are a front left wheel leg, a middle left wheel leg, a back left wheel leg, a back right wheel leg, a middle right wheel leg and a front right wheel leg, and the driving combination bodies are a front left driving combination body, a middle left driving combination body, a back left driving combination body, a back right driving combination body, a middle right driving combination body and a front right driving combination body. The middle freedom degree junction device is installed on the middle position of a front base plate of the back automobile frame, the back end of the front automobile frame is connected with the front end of the back automobile frame in a rotating mode, and the front left driving combination body and the front right driving combination body are installed on the left position and the right position in front of the front automobile frame and are connected with the two front wheel legs, and the middle left driving combination body, the back left driving combination body, the back right driving combination body and the middle right driving combination body are installed on four corners of the back automobile frame and are connected with the other wheel legs.

The invention discloses an automobile spoiler with the adjustable height. The automobile spoiler comprises an automobile tail base and a spoiler body. A fixing base is arranged above the left portion of the automobile tail base and fixed to the automobile tail base. A hinge shaft is arranged on the fixing base. An automobile speed inductor is arranged in the automobile tail base. A line bank is arranged above the right portion of the automobile speed inductor. A cushion base is arranged above the right portion of the automobile tail base and fixed to the automobile tail base. A hydraulic stand column is arranged in the cushion base and fixed to the cushion base. The hydraulic stand column is provided with a hydraulic rod. The spoiler body is located above the automobile tail base. The left lower end of the spoiler body is hinged to the fixing base. A hinging base is arranged in the spoiler body and hinged to the hydraulic rod. The automobile spoiler with the adjustable height is simple in structure, the height is convenient to adjust, installing is convenient, the anti-impact strength and the bending strength of the spoiler body of the automobile spoiler are large, and the heat resistance of the spoiler body of the automobile spoiler is high.

The invention relates to an automobile hydraulic power-driven assisted steering system, comprising a hydraulic pump and a motor which drives the hydraulic pump, wherein the oil inlet of the hydraulic pump is connected with an oil storage tank, the oil outlet of the hydraulic pump is connected with an energy storing device by virtue of a check valve, the energy storing device is connected with a steering assisted cylinder, and the steering assisted cylinder is connected with the oil storage tank. The automobile hydraulic power-driven assisted steering system provided by the invention remains a steering actuating mechanism on the traditional automobile, only a hydraulic system is changed, low-speed righting capability of an automobile is good, and reasonable control is adopted, thus the entire system has the characteristics of light steering at low speed and stable steering at high speed, a one-way hydraulic valve is closed after a motor stops working, the hydraulic pump can be effectively protected, and service lives of key parts of the system can be prolonged. A power source of the motor adopts a vehicle-mounted low-voltage system for providing energy, thus the automobile hydraulic power-driven assisted steering system provided by the invention is applicable to all the vehicles.

The invention relates to a lane guidance method for a vehicle, in particular for a commercial vehicle. The vehicle is equipped with a direction control system which actively performs direction control. The vehicle moves inside a lane of a predetermined track which is predetermined on the basis of detected lane parameters. According to the invention, the direction control system respectively summates the predetermined track or detects at least one specified track parameter as a track real value and compares the track real value with at least one predetermined track reference value. When there is a deviation between the track real value and the track reference value, the predetermined track is changed to make the wheels of the vehicle basically travel inside the tracks (2,3) of the lane. An independent claim is also included for a tracking system for executing the method.

The invention discloses an unmanned aerial vehicle operation path planning method and device, an unmanned aerial vehicle and a medium. The method comprises the steps of determining concave points on the boundary of an operation area, generating segmentation lines passing through the concave points in the operation direction so as to segment the operation area into a plurality of sub-areas, planning operation paths of the sub-areas, when it is determined that the two adjacent sub-areas taking the concave point as the common vertex and having no common boundary meet a preset merging condition, merging the operation paths close to the concave point in the two adjacent sub-areas, and performing global optimization on the merged operation paths and the operation paths of the other sub-areas toobtain the operation paths of the operation regions. The detour frequency and the steering frequency of the unmanned aerial vehicle when the unmanned aerial vehicle encounters the concave points are reduced, the non-operation distance and the steering of the unmanned aerial vehicle are reduced, the operation distance of the unmanned aerial vehicle is increased, the operable time and the operable area of the unmanned aerial vehicle are further increased, the number of globally optimized operation paths is reduced, the calculation amount is reduced, and the efficiency of obtaining the optimal operation path is improved.

The invention discloses a hydraulic system of a wide-body dump truck. The hydraulic system is characterized by consisting of a hydraulic oil tank, an engine, a power steering pump, a high pressure filter, a reversing valve, an energy accumulator, a cooling pipeline, a steering gear, a steering actuation cylinder, a gearbox PTO, a lifting pump, an oil return filter, a lifting cylinder, an air control reversing valve and a connecting pipeline; the power steering pump is connected with the engine, and the lifting pump is connected to the gearbox PTO through a transmission shaft; the power steering pump is connected to the reversing valve after passing through the high pressure filter; two oil passages are formed after passing through the reversing valve, one oil passage is connected to the energy accumulator and the steering gear to supply oil to a steering system, and the other oil passage is connected with the air control reversing valve after passing through the cooling pipeline and supplies oil to a hydraulic lifting system; and emergency steering is realized, the safety is improved, the oil temperature of the hydraulic system is significantly reduced, and the cleanliness of the hydraulic oil is improved.

The invention relates to a steering system for a five-axle heavy duty car. The forward-rotation output shaft of a right angle gear box is connected with the input end of a front steering gear through the transmission shaft of a first front axle, the output end of the front steering gear is hinged with the middle part of a driving arm, the lower end of the driving arm is connected with a steering arm on a first wheel hub through the longitudinal tie of a first front axle, the upper end of the driving arm is connected with the upper end of an oscillating arm through the upper tie rod of a second front axle, the middle part of the oscillating arm is hinged on a longitudinal beam, and the lower end of the oscillating arm is connected with a steering arm on a second wheel hub through the longitudinal tie of a second front axle; after being decelerated, the backward-rotation output shaft of the right angle gear box is connected with the input end of a rear steering gear through a transmission shaft mechanism, and the output end of the rear steering gear is connected with a steering arm on a fifth wheel hub through the longitudinal tie of a fifth axle. The transmission part of the steering system is under very small stress, the flexibility and the reliability of steering can be guaranteed, the operation is labor saving, and the steering system has the advantages of simple structure, easy assembly, light overall weight, low consumption of materials and low production cost.

The invention relates to the technical field of steering equipment for vehicles, and provides a circulating ball type electric power steering gear which comprises a mechanical steering gear, a speed reducer, an integrated motor controller and a sensor. The mechanical steering gear is provided with a steering gear shell and a steering screw, and the speed reducer is provided with a speed reducer shell. The steering gear shell and the speed reducer shell are fixed in a detachable connection mode. A steering input shaft and a worm wheel shaft are arranged in the speed reducer and are flexibly connected through an elastic torsion bar; and a sensor is arranged at the joint of the input end of the steering input shaft and the output end of the worm wheel shaft. The Hela torque sensor capable ofoutputting a torque signal and a corner signal at the same time is adopted, induction is more sensitive, and the signals are more stable and reliable.

The invention provides a pressure-impacting centrifugal dehumidifier with a guiding and adsorbing device. The pressure-impacting centrifugal dehumidifier comprises an air inlet box, a fan, an air outlet pipe, an air guide hood, an air delivery conduit and a steam exhaust chamber, and is characterized in that the air guide hood is composed of an inner guide pipe, an outer guide pipe, inner guide sheets, outer guide sheets and an outer cover, the top ends of the inner guide pipe and the outer guide pipe are connected together by a break-angle-shaped circular ring, six inner guide sheets arranged in the radial direction are arranged in the inner guide pipe to form six longitudinal guide channels, six longitudinal outer guide sheets are uniformly arranged on the outer side of the outer guide pipe, the outer cover is arranged above the inner guide pipe and the outer guide pipe and outside the outer guide pipe through the intersection position of an inverted-cone-shaped guide body and the inner guide sheets at the center of the inner guide pipe, the bottom end of the inner guide pipe is connected with an air outlet pipe of the fan, and the bottom end of the outer guide pipe is connected with the bottom surface of the steam exhaust chamber. The pressure-impacting centrifugal dehumidifier overcomes the defects that the existing pressure-impacting centrifugal dehumidifier has high eddy and turbulent losses and large air leakage quantity of a steam exhaust opening, and therefore, the using quality is improved.

The invention discloses a tennis ball picking-up and transporting vehicle. The tennis ball picking-up and transporting vehicle comprises a guide wheel, walking wheels and a frame, wherein the frame is provided with a lower ball storage box and an upper ball storage box; the frame comprises vertical connecting rods and a horizontal connecting rod; a connecting shaft is arranged in front of the bottom horizontal connecting rod, and is connected with the front vertical connecting rod; the walking wheels are connected with both sides of the connecting shaft; a picking-up rotating wheel is arranged between two walking wheels, and is fixedly connected with the connecting shaft; a picked tennis ball is respectively matched with picking-up end surfaces of two adjacent picking-up rotating wheels; the distance between the end surfaces of the adjacent picking-up rotating wheels is smaller than the outer-circle diameter of the tennis ball in a free state; a first supporting rod is arranged between two vertical connecting rods, and is connected with an upper baffle plate; a lower guide plate is arranged on the bottom horizontal connecting rod. The tennis ball picking-up and transporting vehicle is reliable in transmission and convenient to produce, assemble and adjust, reduces the picking-up and transporting workload of personnel picking up the balls, and improves the picking-up efficiency, thereby being especially applicable to occasions with larger scale and more users.

The invention discloses an automobile front axle steering knuckle and front axle connecting mechanism. The mechanism comprises a steering knuckle and a front axle which are connected through a masterpin, and is characterized in that an upper cylindrical bore and lower cylindrical bore of the steering knuckle are respectively in interference fit with a tapered roller bearing and a roller pin bearing, the tapered roller bearing and the roller pin bearing are in transition fit, the upper cylindrical bore is internally provided with a first limiting device cooperating with the tapered roller bearing and axially limiting the master pin, a master pin bore of the front axle is internally provided with a second limiting device matched with the surface of the master pin, and the second limiting device limits the master pin axially and radially through the axial acting force of the first limiting device on the master pin. The automobile front axle steering knuckle and front axle connecting mechanism has the advantages that the tapered roller bearing not only can bear the axial force, but also can bear the radial force, the bearing capacity is large, and the looseness is not easy; the masterpin and the lower end of the steering knuckle are connected through the roller pin bearing, and the steering is light and convenient.

The invention discloses a self-lifting tennis ball picking and transporting vehicle. The vehicle comprises a guide wheel, two traveling wheels, a frame and a tennis ball lifting device, wherein the tennis ball lifting device is connected with the frame; the upper part of the frame is provided with a ball storage box; the frame comprises vertical connecting rods and a bottom horizontal connecting rod; a connecting shaft is arranged on the front side of the bottom horizontal connecting rod; the two ends of the connecting shaft are connected with the vertical connecting rods on the two sides of the front side through the connecting seat; the traveling wheels are connected with the two sides of the connecting shaft; ball picking rotating wheels are uniformly distributed between the two traveling wheels and are fixedly connected with the connecting shaft; a picked tennis ball is matched with ball picking end faces of two adjacent ball picking rotating wheels respectively; the distance of the ball picking end faces of the two adjacent ball picking rotating wheels is smaller than the outer circle diameter in a free state of the tennis ball; the external diameter of the ball picking rotating wheel is smaller than the external diameter of the traveling wheels. According to the vehicle, automatic ball picking can be realized, and the ball picking efficiency is improved; the vehicle is particularly suitable for being used at large-sized tennis courts and on occasions of more users.

The invention relates to a light path deflecting optical fiber strain sensor based on an optical fiber LP21 mode, comprising a bendable and twistable substrate, a light spot detector and at least one group of optical fiber light spot generating and sensing devices, wherein each optical fiber light spot generating and sensing device comprises a light source, a mode selector and an optical fiber based on the optical fiber LP21 mode; the optical fiber comprises an incident part, a sensing part and an emergent part; the sensing part comprises a sensing part input end connected with the incident part of the optical fiber and a sensing part output end connected with the emergent part of the optical fiber; the sensing part input end and the sensing part output end are cambered; the incident part is divided into two segments in contact with each other, and the emergent part is also divided into two segments in contact with each other; the sensing part is divided into two segments and the sensing part input end and the sensing part output end are separated from each other; and the two segments of the emergent part are connected through an optical fiber convolution part, thereby realizing the convolution and deflection of the light path.

The invention discloses an electric power steering mechanism which comprises an operating mechanism used for operating steering and a steering mechanism connected to wheels, and the operating mechanism is connected with the steering mechanism through an electric power steering gear. The mechanism further comprises a controller, a vehicle speed sensor and a torque sensor, wherein the vehicle speedsensor is used for detecting the rotating speed of wheels, the torque sensor is used for detecting external force torque borne by the operating mechanism, and the controller is in signal connection with the electric power-assisted steering gear, the vehicle speed sensor and the torque sensor. When the external force torque is larger than A, the electric power-assisted steering gear provides power-assisted torque for the steering mechanism, and the power-assisted torque is in negative correlation with the rotating speed of the wheels. The electric power-assisted steering gear is installed between the operating mechanism and the steering mechanism, does not occupy the space of a cab and is convenient to install and arrange. And the power-assisted torque provided by the electric power-assisted steering gear is negatively related to the rotating speed of the wheels, that is, the power-assisted value provided by the electric power-assisted steering gear is reduced along with the increase ofthe vehicle speed, so that the operation safety is ensured while the convenience in operation is ensured.

The invention discloses a steering device for controlling a front wheel of a motor tricycle. The steering device comprises a front fork and a steering column, wherein the front fork comprises a left fork leg, a right fork leg and a bottom plate, the left and right fork legs are parallel to each other, and the bottom plate is used for connecting the left and right fork legs; and a first end of the steering column is connected with a steering wheel. A gravity bearing component is installed on the bottom plate, a gear box is installed on the gravity bearing component, a D-shaped toothed ring, an external gear and a spindle are arranged inside the gear box, the D-shaped toothed ring and the external gear are installed in the gear box through supports, the spindle is connected with the D-shaped toothed ring, a U-shaped hollow part is arranged on the inner side of the D-shaped toothed ring, teeth meshed with the external gear are arranged on the inner surface of an arc-shaped part of the D-shaped toothed ring, the external gear is arranged in the hollow part and meshed with the teeth of the D-shaped toothed ring, and the external gear is connected with a second end of the steering column. Compared with existing steering devices for front wheels, the steering device has the advantages of lightness and convenience in steering, large bearing capacity, convenience in installation and maintenance, large steering angle of the front wheel and the like.