588results about How to "Improve driving comfort" patented technology

The invention relates to the field of automobile driving safety, in particular to a vehicle intelligent driving control method, which comprises the following steps: in the vehicle driving process, using a laser radar to obtain the reflection point information of the road environment in front of the vehicle; determining a road boundary according to the reflection point information; determining a lane line according to the reflection point information or a road boundary; obtaining the curvature of the lane centerline according to the road boundary and the lane line fitting the lane centerline; calculating a steering wheel rotation angle to be adjusted for driving the vehicle along the lane centerline according to the curvature of the lane centerline. Laser radar is used to collect data and calculate the curvature of the road ahead, and the curvature is used to control the lateral motion of the vehicle. It has the advantages of high reliability and can improve the driving comfort, especially suitable for the automatic driving of the expressway, and can also enhance the existing adaptive cruise system.

The invention relates to the field of traffic control and particularly discloses a dynamic coordinated control method for the bidirectional different requirements of a trunk road. The method comprises the following steps of (1) calculating a key intersection largest in traffic flow according to the historical data of a detection coil; (2) determining a plurality of different coordination strategies according to the different traffic requirements in the up and down directions of the key intersection, and calculating a coordinated timing plan in different coordination strategies through constructing a model; (3) finally, according to the traffic flow monitored in real time, voting and determining an optimal coordination strategy. According to the invention, the method can meet different traffic requirements in the two ways of a trunk road. By adopting the method, the traffic efficiency of the trunk road can be effectively improved, and the traffic jam of the trunk road can be relieved. Therefore, the travel time of citizens can be saved. Meanwhile, the energy consumption of vehicles can be saved, and the pollution of the traffic environment can be reduced.

The invention relates to a concrete pavement material for heavy traffic roads and a preparation method thereof. The material is composed of a component A, a component B and a component C in a mass ratio of 1:(0.2-0.6):(4-8). The component A comprises the following components in parts by mass: 40-80 parts of epoxy resin, 0-20 parts of epoxy reactive diluent, 10-50 parts of elastic modifier, 0.2 part of defoaming agent and 0.2 part of dispersing agent. The component B comprises the following components in parts by mass: 100 parts of curing agent, 0-10 parts of curing accelerator and 1 part of coupling agent. The component C comprises the following components in parts by volume: 100 parts of fine stone, 30-300 parts of fine sand, 130-800 parts of waste rubber particle, 50-100 parts of waste rubber powder and 10-20 parts of crystal whisker. Compared with the prior art, the concrete pavement material for heavy traffic roads has the advantages of high strength, favorable durability, favorable roadability, energy saving, environment friendliness and the like, and is convenient for construction.

The invention provides a coaxial coupling driving system of double planetary gear systems and double motors. The coaxial coupling driving system comprises the double motors, the double planetary gear systems and the like. Each planetary gear system comprises a gear ring, a planetary carrier and a sun wheel. A rotor of the first motor is connected with the gear ring of the first planetary gear system. A rotor of the second motor is connected with the sun wheel of the first planetary gear system and the sun wheel of the second planetary gear system through synchronizers correspondingly. The planetary carriers of the two planetary gear systems are connected with an output shaft. The gear ring of the second planetary gear system is connected with a shell. The output shaft is connected with the input end of a deceleration differential. The output end of the deceleration differential is connected with two wheels through two half shafts. A motor control device is connected with an energy storage device and conducts electric power transmission. The motor control device is further connected with the first motor and the second motor and outputs a control command. The coaxial coupling driving system has the characteristic that the vehicle dynamic property, the energy consumption economical efficiency, the geographical adaptability and the application adaptability are better.

The invention discloses a fabricated prestressed heat-resistant cement concrete pavement and a construction process thereof. The pavement is formed by splicing a plurality of fabricated prestressed heat-resistant pavement plates which are parallelly paved and connected into a whole through transverse prestressed steel stranded wires, wherein each fabricated prestressed heat-resistant pavement plate comprises a fabricated prestressed pavement plate which consists of a plurality of pavement plate blocks connected through connecting plates, and a vermiculite concrete heat-resistant paving layer which is paved on the fabricated prestressed pavement plate; each pavement plate block comprises a plurality of common plates which are connected into a whole through longitudinal prestressed steel stranded wires; and the connecting plates and the common plates are cement concrete prefabricated plate blocks. The construction process comprises the following steps of: 1, prefabricating the cement concrete prefabricated plate blocks; 2, transporting the cement concrete prefabricated plate blocks; and 3, paving the pavement. The pavement is reasonable in structural design, convenient to construct, low in input cost and short in construction period, and has heat resistance, construction quality is easy to ensure, and various practical problems of the traditional fabricated cement concrete pavement can be solved.

The invention discloses a seamless bridge deck expansion joint structure for road engineering and a construction process of the seamless bridge deck expansion joint structure. The seamless bridge deck expansion joint structure for the road engineering comprises a bridge body and an expansion join, wherein concrete paving layers are arranged on the bridge body; a preserved notch is formed between two adjacent concrete paving layers; a clearance is reserved between two adjacent bridge bodies or between the bridge body and a bridge abutment; the seamless bridge deck expansion joint structure further comprises an elastic-plastic body and a backing plate; the backing plate is positioned on the bottom surface of the preserved notch for closing the clearance; the backing plate is arranged below the elastic-plastic body; the elastic-plastic body is positioned in the preserved notch for forming an elastic-plastic body expansion joint; and asphalt concrete layers are paved on the concrete paving layers and the elastic-plastic body expansion joint in a penetrating way. According to the seamless bridge deck expansion joint structure disclosed by the invention, a real seamless bridge deck can be formed; and the seamless bridge deck expansion joint structure has the advantages of higher structural safety, greater convenience in construction and convenience in replacement.

The invention discloses an electric four-wheel drive hybrid power system which comprises a power battery, a front driving unit and a rear driving unit, wherein the front driving unit comprises an engine and an ISG motor, and further comprises a CVT transmission; the ISG motor is connected with the engine through a clutch C1; the ISG motor is connected with the CVT transmission through a clutch C2; the clutch C1 is used for controlling the separation and combination of the ISG motor and the engine; the clutch C2 is used for controlling the separation and combination of the ISG motor and CVT transmission. The hybrid power system adopting the front driving unit, the double clutches and the CVT transmission to form power coupling has the advantages that the working modes such as independent working of the ISG motor, and parallel connection work of the engine and the ISG motor are realized by controlling the clutches; the working modes of pure electric mode, parallel connection driving mode, running power generation mode, series connection power generation mode and four-wheel driving mode can be realized by controlling the work of a rear driving motor; the fuel economy and emission performance are higher.

The invention relates to a power-split hybrid power system mode switching method used for realizing smooth switching from a pure electric mode to a hybrid power mode. The power-split hybrid power system mode switching method comprises the following steps of: 1) in an off-line manner, by adopting an discrete dynamic programming method, respectively obtaining a plurality of engine starting curves corresponding to different set conditions by taking vehicle comfort as an optimization objective in the process of power mode switching; 2) according to actual operating conditions and off-line engine starting curves, performing interpolation solution, and obtaining the optimal engine starting curve corresponding to actual operation, and the torque of a motor MG1, the torque of a motor MG2 and a torque control value of a brake B2 corresponding to the curve at each moment; and 3) compensating the optimal engine starting curve corresponding to actual operation according to the minimum torque ripple at an output end, and finally obtaining a corresponding torque control value in the process of power mode switching. Compared with the prior art, the power-split hybrid power system mode switching method disclosed by the invention has the advantages of improving driving comfort and simultaneously taking account of switching time and energy consumption.

The invention relates to an intelligent magneto-rheological vibration damping system, which comprises a magneto-rheological vibration damper, a plurality of transducers, signal conditioning units, a signal processor, a master processor and a controllable current controller module, wherein the plurality of transducers acquire vibration information of the magneto-rheological vibration damper; each signal conditioning unit is connected with one transducer; the signal conditioning units carry out amplification, filtration and level switch in sequence on the vibration information of the magneto-rheological vibration damper; the signal processor analyzes spectrums of information of the signal conditioning units; the master processor processes and combines a control model and a control strategy of the magneto-rheological vibration damper stored in the master processor to process information of a processing unit; and the controllable current controller module changes current values input to the magneto-rheological vibration damper according to a processing result of the master processor. The intelligent magneto-rheological vibration damping system has strong digital processing capacity, and can be well connected with hardware platforms and software platforms.

The invention discloses a dust collection device for a road. The dust collection device comprises a speed reduction band. A water storage cavity is formed in the position, on the lower side of the speed reduction band, of a roadbed. A u-shaped structure is adopted by the water storage cavity. A containing opening is formed in the upper end of the water storage cavity. Drainage pipelines and dust fall pipelines communicating with the drainage pipelines are symmetrically arranged in the water storage cavity. An overflow opening is formed in one side of each drainage pipeline. The dust collectiondevice has the advantages that when the speed reduction band is automatically stored and restores, a middle piston greatly reduces load gravity through incompressible static fluid, acting force is transmitted to a left piston and a right piston, the left piston drives a dust collection piston through a left piston rod to do the exhaust and suction stroke, the right piston drives a water suction piston through a right piston rod, a synchronous rod and a driven piston rod to do the water suction and drainage stroke, non-raised too high dust on the road is sucked into the dust fall pipelines tobe subjected to dust fall treatment, the dust is prevented from polluting the environment, and the body health of pedestrians is protected.

The invention discloses a system of engine position management. According to the system of the engine position management, an enhancement mode time processing unit (ETPU) is adopted to achieve rapid and synchronic fault-tolerance. According to a crank signal processing module, a jumping edge of a crank position signal detected by an input crank position sensor is collected for several times. According to a cram shaft signal processing module, electrical level and a jumping edge of a cram shaft position signal detected by an input cram shaft position sensor are collected for several times in a mixing mode. According to a synchronous logical processing module, a crank state quantity signal output by the crank signal processing module and a cram shaft state quantity signal output by the cram shaft signal processing module are processed and analyzed and a synchronous state quantity signal is output so that an engine state can be changed in real time and synchronism of a crank and a cram shaft is finally achieved. The invention further discloses a control method for the engine position management. The system and the method are capable of achieving the process of the synchronism of an engine rapidly and steadily.

The invention provides a control method for automatic braking in a vehicle, which comprises the following steps: a. acquiring traveling indication information; b. judging whether braking is needed according to the traveling indication information; and c. if so, sending a braking indication signal. The invention also provides a control device for automatic braking in a vehicle, which comprises a first acquisition device, a first judging device and a first executive device, wherein the first acquisition device is used for acquiring the traveling indication information; the first judging device is used for judging whether braking is needed according to the traveling indication information; and the first executive device is used for sending a braking indication signal when determining that braking is needed. The invention also provides a vehicle with an automatic braking function. The invention judges whether braking is needed by acquiring the traveling indication information, thereby automatically braking or prompting the driver to brake before the driver brakes the vehicle as necessary. Thus, the invention effectively avoids the possibility of the driver's failure to brake in time, thereby reducing the possibility of traffic accidents and saving the energy sources.

The invention relates to building telescopic devices and provides a modular multidirectional displacement telescopic device which comprises a joint crossing beam and one or more comb plate assemblies, wherein the joint crossing beam comprises a supporting panel, two steel ball supports and at least one cambered surface support seat plate; the two steel ball supports and the cambered surface support seat plate are respectively positioned on the two sides of a structural joint; one steel ball support is a fixed support and the other steel ball support is a bi-directional movable support; the comb plate assemblies are arranged on one side of the joint crossing beam in sequence; adjacent comb plate assemblies are connected through rigid body elastic elements; the invention further discloses a bridge; the bridge comprises the telescopic device. The joint crossing beam of the telescopic device provided by the invention mainly eliminates influences generated by the angle rotation and displacement in the vertical direction and the comb plate assemblies and the rigid body elastic elements can eliminate influences of the bridge stretching and retraction change generated in the direction along the bridge and angle rotation in the cross-bridge direction, three-directional displacement, stretching and retraction, and rotation of the bridge caused by temperature, wind force and loads can be met, a continuous traffic bearing surface can be provided for vehicle running and noise reduction and vibration prevention effects are good.

The invention provides a rotational speed control method, a device and an electronic device of an air conditioning compressor, which relate to the technical field of compressor rotational speed control. The method is applied to a vehicle. Calculating a first temperature difference between a current vehicle interior temperature and a set temperature; The rotational speed of the air conditioning compressor of the vehicle is adjusted according to the first temperature difference. The invention can automatically adjust the rotational speed of the air conditioning compressor of the vehicle by judging the difference between the set temperature of the user and the actual temperature in the vehicle, thereby helping to adjust the refrigeration effect of the air conditioning and improving the driving comfort of the user.

The invention discloses a power assembly suspension and a vehicle comprising same. The power assembly suspension comprises a rubber body, a sensor, a first magnetic component, a second magnetic component and a controller; the interior of the rubber body is provided with an accommodation chamber; the rubber body is provided with a power assembly connecting structure and a frame connecting structure; the sensor is arranged between the rubber body and the power assembly connecting structure; the sensor comprises a pressure sensor and or an acceleration sensor; the first magnetic component and the second magnetic component are respectively fixed on the wall of the accommodation chamber; at least one of the first magnetic component and the second magnetic component is an electromagnet; the controller is connected with the sensor and the electromagnet. The power assembly suspension is simple in structure and small in size, adaptively adjusts parameters such as the self-stiffness according to the vibration condition of an engine to adapt to the vibrational frequency of the engine and accordingly well attenuates the engine vibration and improves the damping effect.

The invention provides a reinforcing construction method in partial failure repairing of a rural cement pavement. The reinforcing construction method comprises the following steps: excavating an old concrete pavement needing to be repaired to the top surface of a roadbed and cleaning; cutting the excavated old concrete pavement and thus cutting the pavement into an inclined plane along the thickness direction of the road surface; respectively paving one layer of steel wire net on each of the bottom and the middle pat of the inclined section; paving thread steel bars and extending to a road surface region needing to be newly poured; pouring concrete into an excavated region of the old road surface to form a new concrete road surface. The invention aims to solve the road surface crushing problem in old cement road surface diseases of rural highways and useful resources including steel wires, steel bars and the like which are usual in villages can be effectively utilized; the engineering cost is saved and a repairing technology is simple, so as to provide a simple, economical and effective method for repairing the road surfaces of rural roads.