363 results about "Body roll" patented technology

A variable roller blind structure includes a roller blind made up of more than one blind bodies that are respectively attached to the underside of a rotatable roller shaft and a stable roller shaft juxtaposed at an interval and mounted at the inner side of an upper beam. The blind body has a plurality of light-passable areas alternatively arranged with a plurality of black-out areas disposed at the surface thereon, and a winding unit is mutually engaged with the rotatable roller shaft to be controlled by an operating member that is pulled either clockwise or counterclockwise to actuate the movement of the rotatable roller shaft accordingly so as to control the rolling or unrolling operation of the blind body thereby. Via the structure above, the blind bodies of the roller blind can have it both ways with partial transparency and partial sheltering effect for privacy purpose. Besides, when the rotatable roller shaft is wound by the operating member to actuate the rolling movement the blind body till the light-passable areas of the blind body rolled upwards are correspondingly juxtaposed with the black-out areas of the other blind body, the light-passable areas of each blind body thereof can be precisely sheltered by the black-out areas of the other respectively, completely blocking out all light outdoors so as to achieve a total sheltering effect thereof. Thus, the roller blind thereof is capable of being variably operated to cater to the needs of users and is efficiently boosted in its functions thereof.

A suspension control system designed to impart a variable supplemental resistive force to control vehicle body roll and to improve suspension performance through the use of magnetic rheologic force devices. Each of the force devices impart rheologically adjustable amounts of force and resistance to the vehicle suspension system based on a variable magnetic/electrical field created within the force devices. The control system further includes a plurality of sensors that monitor vehicle components and performance parameters, and send signals to a logic unit. The logic unit processes input from the sensors and sends electrical commands to the force devices, which take the appropriate action to optimize suspension system performance. The use of the magnetic rheological force devices supplants traditional stabilizer bars and the associated linkages, fasteners, brackets and insulators.

The invention discloses a four-wheel steering vehicle rollover prevention system and a control method thereof. The four-wheel steering vehicle rollover prevention system comprises a sensor module, a drive-by-wire rear-wheel steering module, a front wheel differential brake module, a rollover evaluation unit, a route planning unit and a controller ECU; and the sensor module comprises a vehicle velocity sensor, a steering wheel angle sensor, a vehicle body rolling angle velocity sensor, a vehicle body rolling angle sensor, a yaw velocity sensor and an acceleration sensor. The rollover prevention control is carried out through the front wheel differential brake module, and the original driving intention of a driver is kept through the rear-wheel steering module, so that a secondary accident possibly resulting from the traditional rollover prevention control without considering the driving intention is avoided.

The linear guide apparatus includes a guide rail 3 including a rolling body rolling groove 8 and a friction apply unit 6 assembled to the guide rail 3. The friction apply unit 6 includes a unit main body 15, a brake member 16, an oil pressure cylinder 17 and a plate spring 32. The brake member 16 is disposed so as to face the side surface 3a of the guide rail 3 and can be contacted with the other portions of the side surface 3a than the rolling body rolling groove 8 thereof. The oil pressure cylinder 17 includes a piston member 20 which is structured to be driven in a positive direction to thereby press the brake member 16 against the side surface 3a of the guide rail 3 and also the piston member 20 can be driven in the opposite direction to thereby remove the pressure of the brake member 16 from the side surface 3a.

The invention relates to the technical field of vehicle chassis, and discloses a steering and roll device of a vehicle and a roll control method. The steering and roll device of the vehicle is composed of a roll mechanism and a steering mechanism, a certain angle is formed between the left and right steering arms and the left and right knuckles, which are fixedly connected with each other, the twomechanisms share the body and the main shafts of the left and right steering knuckles. The small left steering arm and the large left steering arm rotate relative to the axis of each arm self-adaptively. The small right steering arm and the large right steering arm rotate relative to the axis of each arm, the independent control of the vehicle steering and body roll can be achieved, steering androll, independent roll or independent steering can be achieved during the driving process of the vehicle. The wheelbase of vehicle does not change. The vehicle body rolls when the method is applied tothe steering of the vehicle, so that the vehicle automatically rolls at a certain angle to resist centrifugal force or overturning force when steering or driving on an inclined road, so as to maintain a stable driving attitude.

A car navigation system includes a distance sensor 2; an angular velocity sensor 1 for detecting angular velocity having a sensor detection axis in a vertical direction of a casing; an acceleration sensor 3 for detecting acceleration having a sensor detection axis in a back and forth direction of the casing on a horizontal plane; a body velocity and acceleration measuring unit 42 for measuring velocity and acceleration in the body direction of vehicle movement from the signal from the distance sensor; an angular velocity measuring unit 41 for measuring angular velocity from the signal from the angular velocity sensor; a body roll angle estimating unit 43 for estimating a body roll angle from the body direction of vehicle movement velocity and angular velocity; an acceleration sensor output estimating unit 45 for outputting, when the casing is set in the body with a rotation in a yaw direction, estimation values of the output signal of the acceleration sensor at every prescribed angle; and a yaw direction mounted angle detecting unit 46 for determining as a yaw direction mounted angle in the body an angle at a time when an estimated value is obtained which agrees most closely with a value remaining after subtracting from the signal from the acceleration sensor its offset component.

The invention provides a fuzzy sliding mode control method for vehicle height adjustment and vehicle attitude of an electrically controlled air suspension. The method comprises the steps that vehiclebody height signals at four corners of the vehicle and signals at a pitch angle of the vehicle body and a side angle of the vehicle body reflecting the attitude of the whole vehicle are obtained by avehicle body height sensor and a gyroscope correspondingly; the signals at the pitch angle of the vehicle body and the side angle of the vehicle body and the vehicle body after a low-pass filter are transmitted to a fuzzy sliding mode controller of the vehicle; according to the difference between a actual value of a related signal and a target value and a predetermined fuzzy sliding mode control law, the controller outputs an air mass flow signal flowing through four high-speed switching solenoid valves; through the PWM pulse width modulation technology, the air mass flow signal is further transformed into a duty cycle signal of the four high-speed switching solenoid valves in an on-off state; and at last, the on-off states of an inflatable solenoid valve and a out-gassing solenoid valve is determined according to the on-off signal of the four high speed switching solenoid valves and the predetermined logical relationship. The effective adjustment towards the vehicle body height of theelectrically controlled air suspension is achieved, and the controller has strong adaptive ability, stable performance and remarkable advantage.

The invention relates to a structure of a torsion beam-type rear suspension of an automobile; the left and the right suspension vertical arms composed of pipe fittings of the torsion beam-type suspension are arranged on the two sides along the front and the back directions of the automobile; a torsion beam body with a sulciform section is connected therebetween. The structure is characterized in that: the torsion beam body is sulciform member with downwardly-arranged opening; the left and the right suspension vertical arms connected with the torsion beam body are arranged on the front end of the connection part and outstretched; the outstretching angle is symmetrical with the automobile body. The structure effectively improves the roll center of the rear suspension, solves the problems of large angle of the automobile body when the automobile is turning, and at the same time, significantly refrains the over-turning of the rear shaft when the automobile is turning, thus improving and promoting the operational stable performance of the automobile.

An electric actuator has a power transmission mechanism (15) capable of converting a rotational drive force, supplied from an electric motor (10), into reciprocating motion. The power transmission mechanism (15) is composed of a tubular member (25) having in its inner peripheral surface at least a line of rolling body rolling groove, a nut member (22) reciprocatably placed on the inner peripheral surface of the tubular member (25) with endlessly circulating rolling bodies in between, a cylinder rod (27) connected to an end of the nut member (22) and placed so as to be advanceable and retreatable relative to the tubular member (25). The nut member (22) is guided for axial reciprocating motion by the tubular member (25) having a substantially circular tube shape. The electric actuator has high output and high controllability and is compact, about the size of a conventional oil-hydraulic cylinder.

A steering-based automobile flat tire prevention control system relates to automobile safety control devices and comprises an automobile steering wheel, a steering wheel corner sensor, a steering shaft, a universal coupling shaft, a steering pinion wheel, a transmission gear, an electrical control clutch, a steering motor, a flat tire control ECU (Electronic Control Unit), a vehicle speed sensor, a vehicle body heeling sensor, an indicator light, a horn alarm, a steering wheel, a wireless tire pressure sensor, a steering tie rod, a steering rack and a tie rod displacement sensor. When a tire is flat, a flat tire alarm device is started, then the indicator light and the horn alarm give flat tire prewarning information, the steering motor is turned on through the electrical control clutch so as to control the steering system of an automobile to be in a automobile flat tire prevention control state, so that the automobile is prevented from being out of control or even off tracking when one tire is flat.

The invention relates to the technical field of vehicle chassis, and discloses a vehicle steering-rolling linkage device and an active rolling vehicle. The vehicle steering-rolling linkage device is formed through linkage of rolling mechanisms and a steering mechanism, each rolling mechanism comprises a vehicle body, a lower pull rod, a steering knuckle main spindle, an upper pull rod, a shock absorber, a rocker, a steering knuckle, wheels, a supporting rod and a driving rod, and the steering mechanism is in a steering trapezoid shape formed by a connecting rod, left and right steering arms and the vehicle body. The rolling mechanisms and the steering mechanism share the same vehicle body, and linkage is achieved through left and right balance levers via a spherical hinge; through vehiclesteering and vehicle body rolling two-degree-of-freedom movement, it is achieved that vehicle steering and vehicle body rolling are separately controlled. In the vehicle driving process, three workingconditions of steering rolling, separate rolling and separate steering can be achieved; the linkage device is used for active vehicle body rolling during vehicle steering, so that when the vehicle turns off or passes through a slope road, the vehicle automatically tilts a certain angle to resist centrifugal force or rollover force, and a stable driving attitude is kept.

A body-roll restraining system with high utility equipped with active stabilizer devices on a front-wheel side and a rear-wheel side of the vehicle and configured to generate roll restraining forces whose directions are opposite to each other, and maybe configured such that the roll restraining forces are changeable owing to an operation of an actuator, The system having a road-surface-unevenness-dependent-roll restraining control. The above-indicated road-surface-unevenness-dependent-roll restraining control is executable in addition to a control which was conducted in conventional stabilizer devices to restrain the roll that arises from turning of the vehicle, and thus the ride comfort of the vehicle is enhanced.

A design method for improving lane tracking and control stability includes S10 detecting the sideward tilting angle or the forward tilting angle and the backward titling angle of an automobile body and the moving distance of the mass center relative to wheels by combining a sensor according to the steering and accelerator pedal angle input provided by a driver; S20 inputting automobile work condition information into a proportion integration differentiation (PID) controller and obtaining the driving adjusting amplitude of suspension height and the power distribution ratio of wheel driving motors through a corresponding PID control algorithm; S30 reallocating vertical load of automobile tires after an automobile receives feedback control, meanwhile reallocating driving force of four wheels according to the vertical load of the tires and generating correction yawing moment during steering to restrain understeering or oversteering of the automobile, restrain sideward tilting of the automobile body and restraining backward tilting, forward tilting and wheel slip of the automobile during the acceleration and braking process. A four wheel independent driving system and a driving suspension system are combined, and the stability and the lane tracking performance are improved.

A control system (18) for an automotive vehicle (10) has a roll angular rate sensor (34) and a lateral accelerometer (32) that are used to determine the body roll angle of the vehicle when a rollover event has been sensed. A rollover event sensor (27) may be implemented physically or in combination with various types of suspension, load or other types of lifting determinations.

A steering system for a vehicle includes at least one wheel that pivots to define a steering angle, wherein the steering angle is defined, at least in part, by an input from the operator, and at least one sensor adapted to monitor the roll of a vehicle body and a height of the center of gravity of the vehicle. The steering system also includes a motor operatively connected to the wheel that supplements the input to the steering angle, and a controller in communication with the sensor and operatively connected to the motor, wherein the controller is adapted to adjust the supplementation of the input to the steering angle based upon the amount of roll of the vehicle body as monitored by the sensor, and adapted to supplement the steering angle when the amount of roll of the vehicle body as monitored by the sensor exceeds a maximum value.

A half-track multi-use vehicle having an independent suspension system that reduces body roll during operation in rough or sloping terrain. The vehicle includes a frame, a pair of beams that each holds mid and rear wheels, and a suspension system extending between the each beam and the frame. The suspension system includes a plurality of cushions and a stabilizer bar. The stabilizer bar is secured to each beam at a predetermined position between the mid and rear wheels. The predetermined position is selected such that each wheel's wheel rate, which is the combined spring rate contributed by an associated cushion and the stabilizer bar, is equal.

A method and an apparatus for setting bearing play or prestress of anti-friction bearing arrangements with at least two outer or inner rings which are adjustable axially with respect to one another, at least two inner or outer rings fixed axially with respect to one another, and rolling bodies arranged between them. The rolling bodies roll on rolling tracks of the bearing rings and are guided in cages in which markings are arranged on at least one rolling body. A sensor is attached to a cage and an evaluation unit is coupled to the sensor. To set the prestress and bearing play, the bearing arrangement is loaded with an axial force or tilting moment. The bearing arrangement is rotated by at least one full revolution, the rolling-body rotation is recorded by a sensor, and the outer or inner rings are adjusted in relation to the predefined prestress or hearing play.

The invention relates to the technical field of vehicle chassis, and discloses a steering and roll linkage mechanism of a vehicle and a roll control method. The steering and roll linkage mechanism ofthe vehicle is composed of a roll mechanism and a steering mechanism. A certain angle is formed between the left and right steering arms and the left and right knuckles, which are fixedly connected with each other, the two mechanisms share the body and the main shafts of the left and right knuckles, and two dynamic parallelograms are linked with double degrees of freedom to achieve the independentcontrol of body roll and vehicle steering. In the driving course of the vehicle, steering and roll, independent roll or independent steering can be achieved, and the wheelbase of vehicle does not change. The vehicle body rolls when the method is applied to the steering of the vehicle, so that the vehicle automatically rolls at a certain angle to resist centrifugal force or overturning force whensteering or driving on an inclined road, so as to maintain a stable driving attitude.

In a linear guide bearing apparatus in which a lubricant feeding member 20 attached to an axial end of a slider 2 and making sliding contact with the rolling body rolling grooves 3 of a guide rail 1 to feed a lubricant thereto is of a porous material containing the lubricant and is pressed outwardly along the width of the slider 2 by a pressing member 31 fitted in the lubricant feeding member 20 at an upper portion thereof to have its sliding contact portions 21 pressed against the rolling body rolling grooves 3 of the guide rail 1, the lubricant feeding member 20 is housed in the casing 30 formed integrally with the pressing member 31.

The invention relates to a double-chain push-plate type seedbed internal logistic system reciprocating movement device which comprises motors, motor speed reducers, a coupler, double-guide-rail supports, limit blocks, chain wheels, large chain wheels, a chain wheel shaft, a chain wheel roll bearing, seedbed body roll wheels, a seedbed support frame, a seedbed push plate, chains, a double-guide-rail support seat frame, single seedbed side plates, floating guide rail locating grooves, a seedbed floating guide rail, a seedbed fixed guide rail, a single seedbed horizontal rod, single seedbed roll wheels, a stroke limit switch, a chaining idle wheel, an idle wheel connection plate, guide bars, guide pins, a tension idle wheel chain wheel, a sleeve, an eccentric disc, hub nuts and a bottom plate. The double-chain push-plate type seedbed internal logistic system reciprocating movement device is low in cost, simple and convenient to use, compact in mechanism, and long in service life, can achieve accurate movement of products in a production area to an appointed operation location, reduces labor intensity and staff moving density, increases greenhouse plant area, reduces disease and insect infection in a greenhouse, basically achieves sealed type automatic adjustment and control, and realizes the purposes of being energy-saving, environment-friendly, accurate and efficient.

The invention relates to a vehicle body tilting mechanism and an active tilting vehicle applying the same. The invention belongs to the technical field of vehicle chassis, the invention relates to thetechnical field of vehicle body tilting driving and control, the vehicle body tilting mechanism is composed of a tilting mechanism and a steering mechanism, a vehicle body moves relative to a suspension, an actuating angle alpha and a steering angle theta serve as control parameters, vehicle body tilting and vehicle steering two-degree-of-freedom movement is achieved, and wheels do not tilt in the vehicle body tilting process and the vehicle body tilting mechanism is suitable for universal car tires. Three working conditions of steering side inclination, independent side inclination or independent steering can be realized in a vehicle driving process, and the steering side inclination device is applied to active side inclination of a vehicle body when the vehicle steers, so that the vehicle can automatically incline for a certain angle to resist centrifugal force or side overturning force when turning over or driving on an inclined road surface, and a stable driving posture is kept.

The invention relates to the technical field of vehicle chassis, and discloses a vehicle body side tipping driving device and a vehicle using the device. The vehicle body side tipping driving device comprises a vehicle frame, a vehicle body, a left oil cylinder and a right oil cylinder, wherein the vehicle body and the vehicle frame are rotatably connected around a side tipping axis; the vehicle body is rotatably connected with the same-nature ends of the left oil cylinder and the right oil cylinder; the vehicle frame is rotatably connected with the other same-nature ends of the left oil cylinder and the right oil cylinder; a rod cavity of the left oil cylinder is communicated with a rod-free cavity of the right oil cylinder; a rod-free cavity of the left oil cylinder is communicated witha rod cavity of the right oil cylinder; an electromagnetic directional valve controls the left and right oil cylinders to carry out double-way tandem driving on the vehicle body for side tipping motion; a closed driving loop eliminates the transmission clearances and decreases the motion impacts, so as to improve the stability and reliability of the vehicle in the side tipping process; and when the vehicle turns or runs across the inclined pavements, the vehicle body initiatively inclines at a certain angle to resist the centrifugal force or rollover force, so as to keep the stable running posture of the vehicle.