38results about How to "Reduce yaw" patented technology

A dual lane, multi-axle transport vehicle for moving heavy loads includes a forward module mounted on a plurality of axles and a rearward module mounted on a plurality of axles. The forward module is mechanically connected to the rearward module for providing a dual lane transport body. The forward module and the rearward module of the transport body each have a single central spine wherein the axles of both the forward module and the rearward module are each attached to the corresponding single central spine. The axles of both the forward module and the rearward module have an axle spacing of at least six feet. A hydraulic suspension is provided for dynamically stabilizing the axles for reducing axle yaw. An axle steering system having a plurality of steering rods controls the position of the axles of both the forward module and the rearward module.

The invention provides a motor torque control method and a wheel rim motor distributed drive system. The method is applied to a vehicle control unit in the system. The system further comprises two motor systems. The motor systems comprise motors. By means of the method, the following motor torque control process is executed to the motor systems at the same time. Based on current accelerator pedalsignals and the current rotating speeds of the motors in the motor systems, torque basic values of the motors in the motor systems are calculated; the torque basic values of the motors are corrected,and torque corrected values of the motors are obtained; the torque corrected values of the motors are limited through the current vehicle speed of a vehicle and the motor torque recently sent to the other motor system by the vehicle control unit historically, and torque limited values of the motors are obtained; the motor torque is determined from the torque limited values and the torque correctedvalues of the motors and input in the motor systems to which the motors belong, and therefore the motor systems are controlled to respond to the motor torque to control the motors in the motor systems to drive driving wheels, used for being driven by the motor systems, on the vehicle.

The invention discloses a breaking loading roadway repairing machine. A vehicle body part comprises a worktable, a driving device, a running device, an oil tank and a supporting leg, wherein the driving device and the running device adopt a hydraulic transmission mode, the driving device is a hydraulic driving device, is arranged at the rear portion of the worktable and comprises an explosion-proof diesel engine and an oil pump, the explosion-proof diesel engine transmits the oil pump through a coupler, an input port of the oil pump and the oil tank are communicated through an oil path, and an output port of the oil pump and two sets of oil path control valves are communicated through oil paths. Liquid is supplied to the running device and each oil cylinder through the two sets of oil path control valves, the H-shaped supporting leg is arranged at the rear portion of a support of the vehicle body, and the supporting leg is matched with a supporting leg guide rail in a sliding mode.

The invention discloses a rubber vehicle suspension device with variable rigidity property, which is characterized in that a vehicle frame is fixedly connected with a cross beam, a connection bracket is arranged on the vehicle frame, one end of a V-shaped thrusting rod is fixed on the vehicle frame and the other end thereof is fixed at the upper end of an axle through a thrusting rod pedestal, one end of a multi-layer rubber nonprismatic bumper block is fixed at the bottom end of the connection bracket, the other end thereof is suspended over the top end of a rubber spring bracket, the rubber spring bracket is fixed on a lug support by a bolt, both ends of the lug support are respectively connected with an axle pedestal which is fixed on the axle. By the above setting, the rubber vehicle suspension device with variable rigidity property has large bearing capacity, low frequency of vibration in the situation of idle load and full load, and small lateral oscillation of vehicle.

A lateral glide stationary elliptical exercise device (10) with foot support platform (90) yaw control. Yaw control is achieved by a four bar dual rocker linkage yaw control mechanism that includes (i) a foot link (70) with a pair of laterally offset first (p5) and second (p9) connection points constrained to move through generally elliptical paths within parasagittal planes, (ii) a glide link (80) pivotably connected at a first end to the first connection point (p5), (iii) a drawbar (100) pivotably connected at a first end to the second connection point (p9), and (iv) a foot support platform (90) pivotably connected proximate a second end of the glide link (80) and proximate a second end of the drawbar (100).

The invention discloses an autonomous stable multi-degree-of-freedom motion controllable pod type underwater towed body which comprises a main body, a heave control mechanism, a bow turning control mechanism, an instrument pod fixing mechanism, a wing type trim control mechanism, a float type trim control mechanism, a transverse tilt control system and an instrument pod; the left heave control cabin and the right heave control cabin of the main body are of columnar cavity structures, and are arranged on the left side and the right side of the upper end of the main body at intervals; the left heave control cabin and the right heave control cabin are respectively connected with an instrument pod base through two inclined struts, and the left heave control cabin and the right heave control cabin are rigidly connected through a horizontal strut; the middle rear part of the horizontal strut is cut off to form a gap; and the heave control hydrofoil of the heave control mechanism is of a wing-shaped structure arranged in the gap at the rear part of the horizontal strut. The autonomous stable multi-degree-of-freedom motion controllable pod type underwater towed body has the advantages of independent stability, controllable multi-degree-of-freedom motion, good course stability, flexible heave control and the like.

The invention discloses an active electric power steering system capable of changing a steering system transmission ratio, which comprises a steering wheel, a steering column, a steering angle sensor, a torque sensor, a worm gear speed reducer, an assisted motor, a gear rack steering gear, an infinitely variable transmission, a steering angle speed ratio adjustment motor which drives the infinitely variable transmission, a wheel speed sensor, a gyroscope and a steering system controller. The gear ratio control adjustment motor realizes the continuous and smoothly infinite variation of steering transmission ratios at different vehicle speeds, and also can perform steering angle compensation; and in the steering transition of a vehicle, negative steering adjustment is actively performed, and in the steering process, the adjustment motor and the assisted motor perform flexible control and compensate for each other, thereby perfectly combining steering flexibility, convenience and operation stability and improving maneuvering performance and security performance.

The invention discloses an expressway tunnel traveling safeguard device. The expressway tunnel traveling safeguard device comprises deceleration guiding devices arranged at intervals on the cover plates of cable ducts in the two sides of the inner pavement of an expressway tunnel. Each deceleration guiding device comprises through grooves formed in the wheel guiding surfaces of the cover plates, arotary shaft is installed on the edge of one side of the through grooves, a pressing plate and a rotary plate are arranged on the rotary shaft, wherein the pressing plate is located on the inner sideof the wheel guiding surface, and a first spring is arranged between the pressing plate and the wheel guiding surface; one end of the rotary plate penetrates through the through grooves and is located under the through grooves, and a decelerator is connected to the end of the rotary plate through a bending part; when the first spring is pressed because the pressing plate is under pressing force,the rotary plate rotates around the rotary shaft and drives the decelerator to move to the upper part of the through grooves; and guiding cylinders are arranged on the side, on the inner walls of thetunnel, of each cable duct. According to the expressway tunnel traveling safeguard device, automobile wheels can be decelerated, driving directions are further corrected, so that wheels on one side ofthe vehicle is at last stopped on the wheel guiding surfaces of the cover plates and the occurrence of conditions such as automobile yawing and rollover caused by losing control of the wheels is avoided.

An airflow deflector assembly for an open bed truck or like vehicle including a plurality of preferably two cover sections each having a base and an attachment assembly cooperatively disposed and structured to adjustably interconnect the two cover sections facilitating their selective positioning into any one of a plurality of operative orientations. The selected operative orientation corresponds to the width of the trailing end of the open bed of the vehicle so as to so as to establish a substantially continuous air deflecting surface over the trailing end and thereby increasing the aerodynamics of the vehicle. The cooperative structuring of the attachment assemblies facilitate an adjustable sliding interconnection there between such that the bases of each cover section may be reciprocally positioned toward and away from one another to assume the preferred operative orientation corresponding to the width of the truck bed.

The invention discloses an energy-saving durable dewatering and drying centrifuge, which is used for dewatering and drying electronic components in an electroplating production line after washing. A main shaft (13) in the middle of a lower support (12) of the centrifuge uses a high-carbon rubber ring (16) in an upper stabilized seat (11) and a lower stabilized seat (15) as a bearing bush; the main shaft passes through an upper seat dewatering dryer (8) to be connected and fixed with a stainless steel disk (9) of a basket (18) for accommodating stainless steel parts; a far-infrared taper reflector (5) quick heater is arranged below a centrifuge cover (4); the heater is supplied with power by the connecting and disconnecting of the contacts in a reed pipe (1); the reed pipe is controlled by a permanent magnet (2) arranged at the rotary position of the centrifuge cover; the fact that the centrifuge cover is closed means that electrification heating is performed, and the fact that the centrifuge cover is open means outrage and heating termination; a timer (22) is arranged according to the quantity and complexity degree of parts; and the centrifuge is shut down automatically after dewatering and drying of parts.

A stability control system of a vehicle utilizing an electronic control unit that detects a yaw condition while each of the wheel brakes are actuated by EBCM and the wheel speeds are zero. An electronic control unit includes an electronic braking control module that controls actuation and de-actuation of vehicle brakes on an inclined surface. A yaw condition is identified while all vehicle brakes are actuated on the inclined surface and each wheel speed is zero. The electronic control unit identifies which uphill wheel is leading a direction of the yaw and identifies a wheel of an opposing axle diagonal to the identified uphill wheel. The electronic control unit in cooperation with the electronic braking control module de-actuates the vehicle brakes of the identified uphill wheel and diagonal wheel to increase a side friction to the identified diagonal wheels to reduce further yawing of the vehicle.

The invention discloses a hanging wheel device on a top part of a door body. The hanging wheel device comprises a door leaf, a hanging wheel component and a holding groove, wherein the hanging wheel component is installed on a top part of the door leaf and the holding groove is matched with the hanging wheel component. The hanging wheel component comprises a wheel frame, a horizontal shaft and a pair of guide wheels, wherein the horizontal shaft is installed on the wheel frame and the two guide wheels are installed at two ends of the horizontal shaft respectively. The circumferential surface of each guide wheel is indented to form an arc-shaped groove. The holding groove comprises a pair of arc-shaped guide ways. The hanging wheel component is held in the holding groove and the arc-shaped groove of each guide wheel is matched with the arc-shaped guide rail of the holding groove mutually. According to the hanging wheel device on a top part of a door body, the phenomenon of door leaf jumping and swinging is avoided, therefore, the whole hanging wheel runs more stably, so that the service life of the door is greatly prolonged, the lower guide way adopted by the industry is avoided and the product cost is lowered.

The invention relates to a precise transmission chain. The precise transmission chain comprises an inner link and an outer link; the outer link comprises two outer link pieces, two lateral ends of the outer link pieces are provided with press-fitting holes A, the inner link comprises two inner link pieces, and two lateral ends of the inner link pieces are provided with press-fitting holes B; the positions, corresponding to the press-fitting holes B, of the two inner link pieces are provided with annular cushion blocks; an arc-shaped cavity corresponding to the annular shapes of the cushion blocks are formed between the inner link pieces and the outer link pieces, the direction of an arc opening faces towards the longitudinal middle portions of the inner link pieces or the outer link pieces, and the arc-shaped cavity is internally provided with an arc-shaped elastic piece to achieve the support of the inner link pieces and the outer link pieces. By means of spring pieces which are arranged on the edges of the link pieces, the deflection degree of the chain is lowered, and therefore the transmission precision of the chain is improved.

The invention relates to the technical field of flight rail transit, in particular to an unmanned aerial vehicle flight system of a millimeter-precision laser virtual cableway. The system comprises an aircraft and a virtual cableway device, wherein the aircraft comprises a data processing module, and a power module and a laser sensing module which are in electric signal connection with the data processing module; the virtual cableway device comprises a control module, and a cableway laser emission module and a communication module which are in electric signal connection with the control module, the cableway laser emission module is used for emitting virtual cableway laser, and the communication module is used for adjusting signal intercommunication with the data processing module; after the virtual cableway device emits the virtual cableway laser, the aircraft identifies the virtual cableway laser and slides along the virtual cableway laser, and meanwhile, the sliding posture of the aircraft is further adjusted through the communication module, so that the aircraft can be restrained to slide along the virtual cableway laser at millimeter-level precision, and the aircraft is prevented from yawing and sliding along the virtual cableway laser. The flight route precision of the aircraft can be effectively improved, and the probability that the aircraft is out of control and falls is reduced.

The invention discloses a method for synchronizing speed change curvatures of a dual-drive vehicle. The method for synchronizing the speed change curvatures of the dual-drive vehicle comprises the steps of receiving a speed command sent by a controller; detecting actual speeds of a first wheel set and a second wheel set at a current moment; calculating a first speed tracking rate according to a first execution speed and the actual speed of the first wheel set, and calculating a second speed tracking rate according to a second execution speed and the actual speed of the second wheel set; judging whether a tracking rate difference value between the first tracking rate and the second tracking rate is greater than a first preset value; and if so, adjusting the actual speed of the first wheel set or the actual speed of the second wheel set. With the method, a time difference between the first wheel set and the second wheel set that reach a target speed in a control command can be reduced and the probability of vehicle yawing is reduced. The invention further discloses a system for synchronizing the speed change curvatures of the dual-drive vehicle, a computer-readable storage medium anda driver of the dual-drive vehicle. The system for synchronizing the speed change curvatures of the dual-drive vehicle, the computer-readable storage medium and the driver of the dual-drive vehicle have the abovementioned beneficial effects.