63results about How to "Ensure driving comfort" patented technology

The invention discloses a smart self-adaptive cruise control method. The smart self-adaptive cruise control method comprises acquiring vehicle running information and road information by a self-adaptive cruise system, determining the coefficient of road adhesion according to the road information, calculating safety control parameters of a vehicle according to the coefficient of road adhesion and the vehicle running information, and regulating set vehicle control parameters according the safety control parameters to achieve smart cruise control of the vehicle. The smart self-adaptive cruise control method incorporates conditions of road adhesion into a control strategy by adding road identification information, system control parameters can be regulated according to road condition in real time, accuracy of control and safety of a running vehicle can be effectively raised on the premise of driver's driving comfortableness.

An intelligent water draining system of urban roads is applied to road surfaces and a water well. The intelligent water draining system of the urban roads comprises a water draining well lid, a hydraulic device and a pressure sensor. The water draining well lid comprises a fixed well lid and a movable well lid. The fixed well lid is fixedly inset into the road surfaces, the hydraulic device is fixed on the side wall of the water well and is connected with the movable well lid, the hydraulic device is electrically connected with the pressure sensor, and the pressure sensor is arranged on the fixed well lid. According to the intelligent water draining system of the urban roads, the degree of opening of the water draining well lid can be controlled according to the depth of surface gathered water, and the purpose of draining water fast is achieved. The water flowing volume of a water well lid is controlled according to the road surface rain volume, rain water can be effectively drained to the water draining system to reduce the surface gathered water, and riding comfort and pedestrian safety in sunny days or days with small amount of rain can be guaranteed. The intelligent water draining system is arranged under the road surfaces, so that the intelligent water draining system is not damaged by people easily.

The invention discloses a method and a system for recycling sliding energy of an automobile. The method comprises the following steps of: calculating the initial feedback torque of a motor according to the current speed and the set sliding deceleration of the automobile; calculating constraint feedback torque of a battery according to the temperature and the charge state of the battery; calculating constraint feedback torque of the motor according to the rotating speed of the motor; and finally, selecting one of the initial feedback torque, the constraint feedback torque of the battery and the constraint feedback torque of the motor, which has the smallest absolute value, as the final feedback torque of the motor, and recycling the sliding energy of the automobile by using the finally feedback torque of the motor. Compared with the prior art, the method has the advantages that: driving comfortableness can be ensured, and the sliding energy can be recycled to the greatest extent.

The invention provides a highway tunnel ventilation feedforward control method based on environmental forecasting. The method comprises steps as follows: sensors in a tunnel collect CO/VI concentration and instant information of traffic flow in the tunnel and transmit the CO/VI concentration and the instant information to a monitoring center computer; the traffic flow of the n time period is substituted into a tunnel traffic flow data predication model, and the traffic flow of the (n+1) time period is predicated; theoretical values of the CO/VI concentration in the n time period and the (n+1) time period are obtained through calculation; a predicated increment of the CO/VI concentration is calculated according to an actually measured CO/VI concentration value as well as the theoretical values of the CO/VI concentration in the n time period and the (n+1) time period; the predicated increment of the CO/VI concentration is input into a fuzzy controller, and the number of changed fans is obtained through processing and calculation of the fuzzy controller and is taken as a controlled variable to be output to a site area controller; the site area controller controls the fans to be started or stopped according to the controlled variable. With the adoption of the method, optimal operation of the tunnel ventilation control system is realized, and traffic safety is guaranteed.

The invention discloses an external control variable displacement compressor torque compensating method and system. The method includes enabling an electronic injection EMS to collect an engine revolution signal to determine the current engine revolution value, connecting an air conditioner electronic control unit (ECU) through controller area network (CAN) communication to determine current control current of an external control variable displacement compressor and refrigerant pressure value, utilizing an internal MAP to obtain current torque value through a table look up method, and achieving real-time compensation of the whole automobile torque by adjusting parameters like oil injection quantity according to torque value required to be compensated. By means of a whole automobile and bench test method, the refrigerant pressure, control current of the external control variable displacement compressor, the engine revolution and the compressor torque are correlated, real-time compensation is conducted on the external control variable displacement compressor torque of a whole automobile, the external control variable displacement compressor torque compensation accuracy can be improved, and power output of the whole automobile and driving and taking comfort can be ensured.

An active steering bogie for railway vehicles can improve the driving stability of a railway vehicle running at a high speed, thereby increasing the stability of the vehicle, so that the vehicle is not derailed, and can also minimize the vibration of wheels and rails during the driving of the vehicle, thereby ensuring driving comfort. The active steering bogie uses leverage, has a simple structure of links for steering wheel shafts of the bogie, and can use leverage to actuate the links with a small force, thereby reducing the weight of the bogie and facilitating maintenance. The active steering bogie includes a front steering unit, hinged to front axle boxes on both sides of a front wheel shaft to steer the front wheel shaft; and a rear steering unit, hinged to rear axle boxes on both sides of a rear wheel shaft to steer the rear wheel shaft.

The invention discloses a detection method of track smoothness, pertaining to the technical field of track fault detection. A vertical track is uneven in terms of height, level, torsion, surfaces and short waves as well as vertical periodicity formed during rolling and straightening of steel rails. A transverse track is uneven in terms of direction, distance, and transverse periodicity formed during rolling and straightening of steel rails. Composite unevenness is termed when vertical and transverse unevenness coexists within a certain range of tracks. Geometric deviations formed by those at curve ends, positions near to curve point of curve to spiral, points of spiral to tangent, ultra-high, versine, non-uniform or non-compatible gauge downslope starting points and ending ports and geometric deviations formed by curve point of curve to spiral and points of spiral to tangent give rise to composite unevenness. The service lifetime and maintenance period of tracks and vehicle parts are long. Vehicle vibration and track noises are reduced. Smoothness, comfortableness and good safety are obtained. The possibility of train derailment is reduced.

The invention discloses a method for lap jointing of longitudinal cold joints of an asphalt concrete pavement. The method comprises the steps of breaking away the edge of a semi-range pavement laid in advance, tack coat brushing at a lap-joint joint part, latter semi-range pavement paving and mixture lap jointing, manual shaping of the joint part, joint initial pressing, normal grinding of a newly-laid semi-range pavement and joint pavement roughness treatment. The method for treating the longitudinal cold joints is reliable and convenient to use and achieves easy construction.

The invention discloses a safe auto parts steering wheel, which comprises a heating block, a heat transfer strip, a wheel rim, an anti-skid cover, a bracket, an alarm, a horn button, a fingerprint anti-theft lock, a heart rate tester, a ventilation fan, a timer, a display screen and infrared rays A detection light, a heating block is arranged in the rim, and the heating block is connected with the heat transfer strip, and the heat transfer strip is arranged inside the rim, and a bracket is provided in the middle part of the rim, and a control switch is provided on the bracket, and a control switch is provided on the rim. There is a non-slip cover, horn buttons and fingerprint anti-theft locks on the bracket, a heart rate tester on the rim, an alarm on the bracket, a ventilation fan embedded in the bracket, a timer on the bracket, and a timer on the bracket. The display screen is provided with an infrared detection lamp on the support, and a mirror is attached on the support. The invention has various functions, avoids freezing of hands to affect driving, improves driving safety and driving comfort, avoids fatigue driving, ensures driving effect and safety, has simple structure, is convenient to use, and is beneficial to popularization.

The invention provides a method for selecting and switching working points of a range extender, which belongs to the field of range extender control. The method comprises the steps of establishing a universal characteristic diagram of the range extender comprising a plurality of range extender parameter data; establishing a corresponding relation table between each target optimization parameter and the range extender power, the range extender rotating speed and the vehicle speed, wherein the target optimization parameters comprise range extender noise and range extender oil consumption; determining a corresponding target optimization parameter according to the vehicle speed and/or the power demand of the range extender; searching a plurality of corresponding range extender rotating speedsin a corresponding relation table corresponding to the target optimization parameter to obtain a plurality of pre-selected working points expressed by range extender power and the range extender rotating speed; determining priorities of the range extender parameters after the target optimization parameters is removed according to the vehicle speed and/or the range extender power; comparing range extender parameters corresponding to the plurality of pre-selected working points in the universal characteristic diagram; and selecting an optimized working point of the range extender according to the priorities and the comparison result. According to the invention, a proper working point can be accurately selected.

The invention discloses a transformation method applicable to a spandrel structure of a two-way curved arch bridge. The transformation method comprises the steps that after the spandrel structure is removed, the two-way curved arch bridge is provided with an arch bridge open-spandrel segment and an arch crown filled-spandrel segment, a cross partition wall of the arch bridge open-spandrel segmentand a cross partition wall of the arch crown filled-spandrel segment are subjected to jointing, supporting seats are placed on the cross partition walls, steel bottom formworks are hoisted onto the supporting seats, a plurality of shear studs are welded onto the inner sides of the steel bottom formworks, the shear studs and a laid double-layer reinforcement mesh are welded into the whole, and theends of the shear studs are fixedly connected with the arch crown filled-spandrel segment through rebars; concrete is poured at the arch crown filled-spandrel segment; and concrete carriageway platesare overall poured on the whole bridge at a time. According to the transformation method, the bearing ability of the carriageway plates is effectively improved, the crack resistance of the carriagewayplates is improved, thus traveling comfort and durability are improved, connecting between the carriageway plates and a main arch ring is improved, thus the horizontal load on a bridge deck is effectively transmitted to the main arch ring, the construction steps are easy, convenient and orderly, and the transformation method has the quite high practicality and wide applicability.

The invention discloses a braking control method and system of a switching value braking pedal and further discloses a vehicle comprising the braking control system. The method comprises the steps that when a driver operates the braking pedal, the time duration of stamping on the braking pedal by the driver is obtained, and according to the time duration, the depth delta of the braking pedal is determined; the maximum permitted braking power of all parts of the current vehicle is obtained, and the minimum value in the maximum permitted braking power of all the parts is determined to the real-time maximum permitted braking power P<max>; and according to the depth delta of the braking pedal, the real-time maximum permitted braking power P<max> and the actual motor rotating speed, braking torque T<target> is obtained, and according to the depth delta of the braking pedal and the braking torque T<target>, the vehicle is controlled to be braked. According to the braking control method and system, the pedal braking behavior of a driver can be simulated, the braking intention of the driver is reflected, the reasonable braking torque distribution and vehicle safety of the vehicle are ensured, and the economical efficiency of the vehicle is ensured.

A vehicle with a foot-controlled balance system relates to the technical field of vehicles, including a balance system and a vehicle. The balance system includes a left fluid buffer mechanism, a right fluid buffer mechanism, a synchronous converter, a tilt control converter, a steering gear, a foot Pedal device, fluid compression pump and fluid source, the fluid buffer mechanism on the left and the fluid buffer mechanism on the right are respectively connected to the output port of the synchronous converter through connecting pipes, the input port of the synchronous converter is connected to the tilt control converter through pipelines, and the tilting The control converter is connected with the steering gear through pipelines, the pedal device is connected with the steering gear, the fluid compression pump and the fluid source are connected with the steering gear through pipelines; the vehicle is a four-wheel bicycle. The invention makes the vehicle not too bumpy on the uneven ground, the foot control actively controls the balance of the vehicle, has quick response, good stability and comfort, and has the functions of anti-rolling and anti-rollover.

The invention discloses an inter-groove apron board for improving vortex vibration performance of a double-amplitude bridge, the double-amplitude bridge comprises two main beams, each main beam extends along the bridge direction, the two main beams are arranged side by side along the transverse bridge direction, an open groove is arranged between the two main beams, the inter-groove apron board is arranged at the open groove, and the inter-groove apron board extends along the vertical direction. The invention also provides the double-amplitude bridge. The inter-groove apron board is vertically fixed between the upstream main beam and the downstream main beam, vortexes of wake flow of the upstream main beam are prevented from falling off and acting on the downstream main beam, the vortexes are isolated, and vertical excitation of the section of the bridge is reduced, so that the situation that the downstream girder generates large-amplitude vibration is avoided, the pneumatic interference effect between the upstream girder and the downstream girder is effectively reduced, double-amplitude bridge vortex vibration is eliminated, the driving comfort and safety are ensured, the section form of the main beam does not need to be adjusted, the structural cost is reduced, main beams with different sections can be adapted to, and the application range is wide.

The invention provides an optimal setting method for road traffic deceleration facilities. The optimal setting method comprises the steps that a deceleration roadblock is arranged along the boundary of a passing lane; the deceleration roadblock comprises an inlet water horse, a middle isolation section water horse and an outlet water horse which are sequentially arranged in the longitudinal direction of the boundary, the inlet water horse and the outlet water horse serve as roadblocks for closing traffic, and the middle isolation section water horse serves as an isolation roadblock. The inletwater horse, the middle isolation section water horse and the outlet water horse are sequentially arranged in a staggered mode and form a decelerated driving route, and therefore vehicles can be guided to drive in a decelerated mode. According to the optimal setting method of the road traffic deceleration facility, the vehicle can be reminded, warned and guided to run according to the expected route, on the basis that the running safety and comfort are guaranteed, a driver can actively reduce the vehicle speed, and therefore the running safety of the vehicle is effectively improved.

The invention discloses a hybrid power transmission which at least comprises an input shaft and an output shaft which are arranged in parallel. The input shaft and the output shaft are in transmissionconnection through a gear pair I and a gear pair II, and the output shaft is further provided with a differential mechanism in transmission connection with the output shaft. An auxiliary motor and amain driving motor are further included, the auxiliary motor is mechanically and directly connected with the engine, and electric power is transmitted to the differential mechanism through the gear pair II; and the main driving motor is directly connected with the differential mechanism and transmits the electric power to the differential mechanism, and the auxiliary motor and the main driving motor are high-speed, efficient and long-wheelbase motors with the same wheelbase. The hybrid power transmission has advantages that cost is reduced, a double-shaft design is adopted to reduce an axial occupied space of the gear pair, the auxiliary motor is mechanically and directly connected to the engine to provide inertia needed by the engine, and a damping disc is used in cooperation to reduce anaxial occupied space.