207 results about "Power steering" patented technology

The invention belongs to the technical field of new energy automobile steering systems, and discloses a new energy automobile electric hydraulic power-assisted steering system and a control method thereof.The system integrates a double-source redundant hydraulic power unit, a hydraulic adjusting unit, a multi-dimensional working condition sensing unit and an intelligent main controller; the multi-dimensional working condition sensing unit is integrated with a road adhesion coefficient detection module and a battery remaining capacity detection module. The control method is layered look-ahead matching control and is executed by an intelligent main controller in parallel: a power-assisted decision-making layer divides a three-stage power-assisted mode according to multi-dimensional perception information, and limits a steering angular velocity when power-assisted is enhanced on a low-attached road surface; the energy optimization layer predicts and implements prospective energy storage and pump rotating speed self-adaptive adjustment based on the intention of a driver; and the fault diagnosis layer realizes rapid fault identification and redundancy switching through multi-parameter collaborative diagnosis. The contradiction of high energy consumption, response delay and weak safety guarantee of a traditional system is solved, and power-assisted steering which is safe, energy-saving, fast in response and high in adaptability is achieved.

The invention discloses a hydraulic power steering gear structure and a mounting method thereof, the structure comprises a hydraulic power steering gear, a transmission shaft and a steering tie rod, the hydraulic power steering gear is connected with a steering wheel through the transmission shaft, the hydraulic power steering gear is connected with the steering tie rod through a steering pull arm, and the steering tie rod is connected with a tire. According to the mounting platform with the positioning rod, the technical problems that the steering performance cannot be met and the assembly efficiency is low due to the fact that the initial posture of a steering pull arm does not have standard positioning during mounting of an existing hydraulic power steering gear, the left steering limit angle and the right steering limit angle are inconsistent, the pressure relief function fails, hydraulic locking cannot be achieved, and the steering performance cannot be met can be solved. The invention discloses a method for positioning the initial position of a standardized steering pull arm, which ensures that the steering angle of the steering pull arm is symmetrical and the pressure relief function and the stop function of the hydraulic power steering gear are normal, improves the assembly efficiency and avoids later debugging.

1. The name of the design product: electric hydraulic power steering system. 2. The use of the design product: electric hydraulic power steering system for automobile. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

Aspects of the present invention relate to a control system, to a vehicle, to a method, and to a computer readable medium, for controlling a peak electric current used by an electric power assisted steering system (EPAS) of an electric vehicle. The method comprises obtaining a signal representative of a charge level of a traction battery of the vehicle, determining, based on the obtained signal, a value of a maximum electric current to be used by the EPAS, and providing, to the EPAS, an indication of the value of the maximum electric current to be used by the EPAS.

The invention provides a double-front-axle power-assisted steering system and a vehicle, and belongs to the technical field of vehicle steering systems.The double-front-axle power-assisted steering system comprises a double-loop power steering gear, an oil tank, a first power-assisted pump, a second power-assisted pump, an emergency pump, an emergency valve, a first power-assisted cylinder and a second power-assisted cylinder, and the first power-assisted cylinder and the second power-assisted cylinder assist the two front axles of the vehicle respectively; the first booster pump provides pressure oil for a first booster cylinder arranged on a first front axle through the double-loop power steering gear, and the second booster pump provides pressure oil for a second booster cylinder arranged on a second front axle through the double-loop power steering gear. The first booster pump and the second booster pump are driven by the output end of a vehicle engine, and the emergency pump is driven by a gear in the power coupling box. When the first booster pump breaks down, the second booster pump can provide assistance for steering, and when the second booster pump breaks down, the emergency pump replaces the second booster pump to work. When the vehicle loses power to slide, the first booster pump and the second booster pump stop working, and the emergency pump is driven by an internal gear of the power coupling box under the inertia effect of the vehicle to continue to provide assistance for the vehicle.

A steering angle estimation device of an electric steering system. A first operator calculates a yaw rate. a second operator calculates an average value of rear wheel speeds. A Kalman filter predicts a yaw acceleration by filtering the yaw rate. A third operator estimates a steering angle also taking into account a slip angle by using the yaw rate and the yaw acceleration. A weight adjuster adjusts weights of the wheel speeds by averaging rear right and left wheel speeds calculated by the second operator. A multiplication operator multiplies weight values output by the weight adjuster with the steering angle. A steering angle conversion switch outputs a final steering angle by selecting the estimated steering angle output from the multiplication operator or a motor steering angle measured from a motor of a motorized power steering system by the weight values.

The application provides a method, device, equipment and medium for displaying energy consumption of a driver, and the method comprises the following steps: obtaining steering signal data from a self-power steering system; obtaining throttle signal data from a throttle device; obtaining braking signal data from a braking device; calculating a driver energy consumption value according to the steering signal data, the throttle signal data and the braking signal data; and displaying the driver energy consumption value on a vehicle-mounted display. The application shows the driver relevant information about driving behavior, so that the driver can pay attention to the driving behavior during driving without increasing hardware and computing power costs.

The application relates to a force couple balance and longitudinal array push-pull vertical take-off and landing high-speed aircraft, belonging to the technical field of aircrafts, which comprises a fuselage, a rotor, a fixed wing, a steering controller and a propeller. The rotor is installed at the top of the middle part of the fuselage through a rotor shaft, and a clutch is arranged between the rotor and a power system and / or a transmission system matched with the fuselage, so as to be controlled to be disconnected or to transmit power to the rotor. The steering controller comprises a fixed base and a rotating base, and each of the nose and the tail has a set of the rotating base. The propeller is provided with two propellers which are respectively installed on the rotating bases of the nose and the tail, and are controlled to rotate with the rotating bases relative to the fixed base. The force couple formed by the front and rear thrust vectors is used to balance the reverse torque brought by the rotor. When the propeller is coaxial with the middle axis of the fuselage, the wind area of the single propeller obtains double thrust. The application can improve the energy utilization rate, improve the carrying capacity, improve the flight safety performance and obtain a longer hovering time.

The application discloses a power steering oil pump pulley assembling device, which comprises a pull rod for being connected with a pump shaft of a power steering oil pump, a positioning seat for placing a pulley, a positioning sleeve arranged on the positioning seat and used for coaxially arranging the pulley and the pump shaft of the power steering oil pump, and a driving device connected with the pull rod, wherein the positioning sleeve is sleeved on the pull rod, and the driving device is arranged to control the pull rod to move linearly along a set direction, so that the pump shaft of the power steering oil pump is inserted into a center hole of the pulley. The power steering oil pump pulley assembling device can ensure that the pulley cannot be inclined and pressed during the process of being assembled on the pump shaft, can improve the assembling effect of the power steering oil pump and the pulley of the hydraulic power steering system, and can improve the assembling efficiency.

Energy recovery system, especially for a vehicle, comprising: - at least one energy source (12) for converting kinetic energy into electrical energy, - at least one energy storage device (14), - at least one energy consumer (18), - a control unit (22) for selectively connecting the at least one energy source (12) with the at least one energy storage device (14) or the at least one energy consumer (18), wherein the at least one energy source (12) comprises at least one of the following systems: - a drive system of an electric vehicle with at least one traction electric motor, - a power steering system of a vehicle with at least one electric steering motor - a roll stabilization system of a vehicle with at least one stabilizing electric motor, wherein the control unit (22) is configured to connect the at least one energy source (12) to the at least one energy consumer (18) when the at least one energy source (12) is in a critical energy generation operating state that overloads the at least one energy storage device (14), and to connect the at least one energy source (12) to the at least one energy storage device (14) when the at least one energy source (12) is in a non-critical energy generation operating state that does not overload the at least one energy storage device (14), characterized by that at least one energy storage device (14) is a capacitor energy storage device (14), that the critical energy generation operating condition exists when at least one energy source (12) is in an intensive recovery operating condition, and that at least one energy source (12) is in the intensive recovery operating state if at least one of the following conditions is met: - the at least one energy source (12) comprises the at least one traction electric motor and a deceleration of the vehicle is above a threshold deceleration, - the at least one energy source (12) comprises the at least one steering electric motor and the extent of the steering interventions carried out to maintain a steering state is above a threshold extent and / or the frequency of the steering interventions carried out to maintain a steering state is above a threshold frequency, - the at least one energy source (12) comprises the at least one stabilizing electric motor and the extent of the roll control interventions carried out to maintain a roll state is above a threshold extent and / or the frequency of the roll control interventions carried out to maintain a roll state is above a threshold frequency.

The present application relates to the technical field of automobile power steering device, and particularly relates to a torque and angle sensor, which comprises an upper rotor assembly having an upper rotor for generating an induced magnetic field and a large gear for being fixed to the outer periphery of an input shaft; a lower rotor for being fixedly connected with an output shaft; a pinion having outer teeth for engaging with the large gear, the pinion having a magnet for generating a magnetic field; a PCB board located between the upper rotor assembly and the lower rotor for cooperating with the upper rotor and the lower rotor to generate a first angle signal, the pinion being rotatably installed on the PCB board for cooperating with the pinion to generate a second angle signal, the PCB board having an inductor coil and a chip; the present application solves the technical problems of the prior art, such as the multiple and complex structure components of the torque and angle sensor, the increased process complexity, and the large friction noise between the input shaft rotor and the upper housing during rotation.

The application provides a driving force control method of a four-wheel drive vehicle, which comprises the following steps: obtaining a target driving force of the vehicle, a steering angle of front wheels and actual wheel speeds of each wheel; wherein the target driving force comprises a target driving force of a front axle and a target driving force of a rear axle; calculating an estimated wheel speed of each wheel based on the target driving force, the steering angle and the actual wheel speeds; calculating a difference between the estimated wheel speed and the actual wheel speed; calculating a driving force correction amount based on the difference between the estimated wheel speed and the actual wheel speed when the difference between the estimated wheel speed and the actual wheel speed meets a preset condition; wherein the driving force correction amount comprises a driving force correction amount of the front axle and a driving force correction amount of the rear axle; and correcting the target driving force based on the driving force correction amount to reduce the difference between the actual wheel speed and the estimated wheel speed until the preset condition is met. Therefore, the vehicle can quickly respond to working conditions such as sudden change of road friction coefficient, so that the straight driving performance and the steering stability of the vehicle are improved.

Method for determining the rotor angular velocity of a power steering motor in a vehicle, in which data representing information on the rotor angular velocity are used, the acquired data are filtered with a filter so that filtered data are obtained, and the filtered data are evaluated to determine the rotor angular velocity.

This invention relates to a torque load simulation device and an electromagnetic compatibility (EMC) testing system. The device includes an airflow valve assembly and a pneumatic friction structure. The airflow valve assembly regulates the compressed air pressure output by an air pump unit. The pneumatic friction structure is a grooved snap-fit ​​structure with two pneumatic friction plates respectively disposed on the inner walls of both sides of the groove. The pneumatic friction plates are driven and connected to the air pump unit via gas pipelines. The air pump unit regulates the pushing force applied to the pneumatic friction plates through the airflow valve assembly. The two pneumatic friction plates transmit the pushing force to both sides of the rotating brake disc through their friction surfaces, generating friction on the brake disc to simulate the torque load of ground friction. By designing a passive torque load simulation device, the load applied to the power steering motor can be simulated during EMC testing, which helps to accurately evaluate the electromagnetic characteristics of the power steering motor.

The invention provides an intensive steel rail grinding wagon for a plateau railway. The intensive steel rail grinding wagon for the plateau railway comprises an operation vehicle, a tractor and a dust cleaning vehicle, the tractor is connected with one side of the working vehicle, the other side of the tractor is connected with a dust cleaning vehicle, and the working vehicle comprises a vehicle body assembly; the device comprises a coupler buffer device, an air conditioner, a detection and monitoring cabinet, an oxygen production device, a radiator, a diesel generating set, a hydraulic system, a dust collection device, an electrical system, a high-voltage interconnection box, a folding shed windshield, a tight-lock coupler, a non-power bogie, a polishing device, a brake control cabinet, a fuel system and an air purification device. The intensive steel rail grinding wagon for the plateau railway is suitable for high-availability and less-maintenance key parts of core equipment under extremely complex application conditions of the Sichuan-Tibet railway, promotes key technology breakthrough, accelerates application of advanced technologies to Sichuan-Tibet railway products, and can effectively improve the steel rail grinding effect and efficiency in plateau areas.

Preventing steering wheel oscillation during vehicle shutdown is provided. An electronic power steering system is disclosed and includes: a steering wheel configured to steer a host vehicle; a steering column connected to the steering wheel; a rack; an electronic column lock configured to lock the steering column to the rack; and a control module configured to determine, during a stop event of the host vehicle, whether the electronic column lock is activated and has locked the steering column to the rack, and in response to determining that the steering column is locked to the rack, inhibit movement of the steering wheel to prevent movement of the steering wheel.

An electronic power steering apparatus, according to one embodiment of the present invention, comprises: an output shaft rotated by means of a reduction gear connected to a driving motor; a ball screw having an upper end coupled to a lower end of the output shaft, and having outer circumferential screw grooves formed on an outer circumferential surface thereof to rotate in conjunction with the output shaft; a ball nut having gear teeth formed on an outer circumferential surface thereof and inner circumferential screw grooves corresponding to the outer circumferential screw grooves formed on an inner circumferential surface thereof, the ball nut being coupled to the ball screw via a ball and sliding in an axial direction; and a sector shaft, coupled to the gear teeth of the ball nut, for operating a pitman arm while rotating during the axial sliding of the ball nut.

Some examples of the techniques described herein may include a feature where a torque of a steering wheel provides a seamless transition from automated driving to manual steering. For example, automated driving may remain active while the driver interacts with the steering wheel and may take control when the driver releases the steering wheel. The torque of the steering wheel may feel similar to the supportive torque of power steering, including an additional torque weight to indicate that automated driving is still active. Thus, a smooth transition between automated driving and manual driving may be provided. In some approaches, an automated steering controller may impart a torque on the steering wheel that is modeled as a combination of a characteristic power steering supportive torque, a second torque that may vary based on vehicle speed, or a third torque that may vary based on a degree of steering.

The invention relates to a laser measuring device for measuring the width and length of a bridge crack, and belongs to the technical field of bridge detection, and the laser measuring device comprises a walking assembly, a steering assembly, an adjusting assembly, a laser range finder and a sensing assembly. Wherein the walking assembly is used for providing power for the laser measuring device to walk on a bridge; the steering assembly is arranged on a walking base in the walking assembly and used for providing power for the laser range finder to rotate in the vertical direction. The adjusting assembly is arranged on a steering table in the steering assembly, and independent movement in the vertical direction and the horizontal direction is provided for the laser range finder through an adjusting plate. The sensing assembly is arranged on the walking assembly and corrects the walking direction of the whole laser measuring device, and the situation that a complex visual system is needed to complete crack width and length measurement work is avoided. According to the method, the dependence on a complex visual identification algorithm is abandoned, and the problems of instable identification, precision reduction and even failure in the prior art are fundamentally eliminated.

1. The name of the design product: power module. 2. The use of the design product: the design product is used for power steering system, air conditioning and other auxiliary equipment to provide the required power, and then adjust the output voltage and current of the power supply. 3. The design points of the design product: the overall shape of the product. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

A rack piston of a hydraulic steering assembly divides a hollow portion of a housing into an upper cylinder above the rack piston and a lower cylinder below the rack piston. The rack piston defines a rack cavity. An auto-bleeder bi-directional flow valve disposed in the rack piston allows for the flow of air and hydraulic fluid in and out of the rack cavity. The bi-directional flow valve defines a flow path through the rack piston between the rack cavity and the upper cylinder. When a differential pressure between the upper cylinder and the lower cylinder is greater than a threshold, the steel ball blocks the flow path by compressing a first spring or a second spring. Alternatively, the first spring and the second spring hold the steel ball in a neutral position to allow for the flow of air and hydraulic fluid in and out of the rack cavity.

This disclosure provides a two-wheeled vehicle control method and device, a two-wheeled vehicle, and a storage medium. By acquiring first attitude data and first driving state data of the two-wheeled vehicle, the control priorities and corresponding control parameters for the power, steering, and braking of the two-wheeled vehicle are determined based on the first attitude data and the first driving state data. At least one of the power, steering, and braking of the two-wheeled vehicle is coordinated and controlled through the control priorities and control parameters, so that the two-wheeled vehicle is in a balanced state. This achieves self-balancing control of the two-wheeled vehicle, improves the driving stability of the two-wheeled vehicle, and enriches the data basis for self-balancing control by using multi-source data such as attitude data and driving state data. This improves the accuracy and robustness of control and solves the problem of disconnect between self-balancing control and driving state.

1. The name of the design product: power steering circuit board laminated connector. 2. The use of the design product: the design product is used for communication connection between power steering circuit boards. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model discloses a built-in non-power bogie frame, a bogie and a low-floor tramcar, and belongs to the technical field of railway vehicles. The built-in non-power bogie frame comprises a frame body of a structure similar to a Chinese character'jing '. The frame body comprises two cross beams arranged in a spaced mode, a connecting base in butt joint with the cross beams and side beams in butt joint with the ends of the connecting base. Wherein the side beams and the cross beams are all made of section bars, the connecting seats are formed in a casting mode, and the ends of the connecting seats are in a step shape so that the side beams can be located above the connecting seats, and a downward-concave structure can be formed in the middle section of the framework body. The bogie of the large-axle-load low-floor tramcar has the advantages of being high in strength, simple in framework structure and convenient to produce and maintain.

The invention discloses a steering mechanism and an independent suspension system. The steering mechanism comprises a steering rocker arm unit, a mid-position locking cylinder, a first power steering cylinder, a second power steering cylinder, a first steering linkage and a second steering linkage; one end of the mid-position locking cylinder is connected with the steering rocker arm unit, and the other end is hinged to a frame; one ends of the first power steering cylinder and the second power steering cylinder are connected with the steering rocker arm unit, and the other ends are hinged to the frame; and one ends of the first steering linkage and the second steering linkage are connected with the steering rocker arm unit, the other ends are connected with knuckle arms, and the knuckle arm is fixed on a wheel rim.

This invention provides a method, device, and intelligent vehicle for assisted driving safety control, belonging to the field of functional safety technology for autonomous driving. The safety control method includes: detecting active driving information caused by the user, including brake pedal input and steering wheel input; detecting whether the assisted driving controller is experiencing abnormal operating conditions, including continuously issuing acceleration commands, continuously issuing braking commands, and continuously issuing steering commands; determining whether the assisted driving controller has malfunctioned based on the detection results of the abnormal operating conditions and the active driving information; and determining whether the assisted driving control should be actively disengaged by actuators, including a vehicle power controller, a vehicle stability system, and a power steering system, based on whether the assisted driving controller has malfunctioned. This invention not only maximizes vehicle safety but also considers the driving experience.

This invention discloses a hydraulic system for center-position locking of an electronically controlled steering shaft. The P1 port of the hydraulic selector valve is connected to a steering pump, and the P2 port is connected to a variable displacement piston pump. The B port of the hydraulic selector valve is connected to an accumulator. The accumulator is connected to the electronically controlled axle locking hydraulic circuit, providing high-pressure oil to achieve center-position locking of the electronically controlled axle locking cylinder. Port 1 of the dual-circuit steering gear is connected to port A of the hydraulic selector valve. The second steering pump is connected to port 1 of the other circuit of the dual-circuit steering gear, and ports 2 of the dual-circuit steering gear are both used for return oil. The left and right steering cylinders of the mechanical steering shaft are connected to the high-pressure oil ports of the dual-circuit steering gear to achieve hydraulic power steering. This invention, through the hydraulic selector valve, allows the emergency steering oil source of the mechanical steering shaft and the center-position locking oil source of the electronically controlled steering shaft to share the same oil pump device, prioritizing the emergency steering function of the mechanical steering shaft, reducing energy consumption, and saving on the number of oil pumps.

A method for operating a power steering system that has a steering handle via which a direction of travel of a vehicle can be influenced and which acts on a rack, the position of which determines the direction of travel, wherein the vehicle is in a state in which the direction of travel is specified using a requested trajectory which is provided; after detection of a fault in the power steering system, the rack is moved towards a zero position, the movement of the rack towards the zero position is terminated when the driver resumes control of the vehicle and an intervention occurs via the steering handle.

The application provides a method, system, storage medium and equipment for inhibiting axial shaking of a steering wheel, the method comprising: acquiring vehicle information, and obtaining a wheel vibration frequency through a preset formula according to the vehicle information; controlling a sensor arranged on the vehicle to collect real-time torque information on the steering wheel, and performing frequency spectrum analysis on the real-time torque information; filtering the result of the frequency spectrum analysis through a preset method to obtain a corrected torque vibration amplitude and a corrected torque vibration frequency; comparing the corrected torque vibration frequency with the wheel vibration frequency, and judging whether the ratio of the two is within a preset range; if yes, sending a counter torque control signal to a vehicle power steering system according to the corrected torque vibration frequency and the corrected torque vibration amplitude, so that the vehicle power steering system inhibits axial shaking of the steering wheel. The application solves the problem in the prior art that the wheel dynamic balance of a vehicle is poor, which causes the steering wheel to shake and further affects the driving experience of a driver.