513 results about "Power steering" patented technology

Disclosed are an apparatus and method for detecting abnormal wheel alignment. The apparatus for detecting abnormal wheel alignment includes a sensor module and a processor operatively connected to the sensor module. The processor may calculate a steering angle error indicative of a difference between a target steering angle of a vehicle and a steering angle of the vehicle that has been detected based on lane information obtained by the sensor module, may calculate a rack force error indicative of a difference between a first rack force estimated based on information that has been fed back by a motor driven power steering system (MDPS) module of the vehicle and a second rack force estimated based on information including a yaw rate and lateral acceleration obtained by the sensor module, and may determine whether wheel alignment is abnormal based on at least one of the steering angle error and the rack force error.

The utility model relates to the technical field of automobile steering, and discloses a multi-stage gear type all-electric power steering device which comprises a control module and a power steering module. The control module comprises at least two steering control units which are connected with each other through SPI (Serial Peripheral Interface) signals; the power-assisted steering module comprises a power-assisted motor, a gear transmission mechanism, a planetary gear mechanism, a worm and gear mechanism, a shell, an input shaft and an output shaft, the power-assisted motor is arranged on the shell, the gear transmission mechanism, the planetary gear mechanism and the worm and gear mechanism are arranged in the shell, and the power-assisted motor is in transmission connection with the gear transmission mechanism; the planetary gear mechanism is connected with the gear transmission mechanism, and the worm and gear mechanism is connected with the planetary gear mechanism. The multi-stage gear type all-electric power steering device solves the limitation of an existing electric power steering device in the application field of commercial vehicles, and the pure electric steering device which is efficient, energy-saving, light and convenient in steering and good in controllability can be provided for passenger and goods commercial vehicles.

A non-powered bogie and a railway vehicle, the non-powered bogie comprising a frame, a wheel set (2), a primary suspension device (3), a secondary suspension device (4) and a traction device (5), wherein the frame comprises a cross beam (12), side beams (11) and a primary mounting seat (13); the two side beams (11) are arranged in parallel to each other, and the cross beam (12) is connected between middle portions of the two side beams (11); the primary mounting seat (13) is disposed at end portions of the side beams (11); each side beam (11) comprises a side beam body (11a) and an air spring mounting portion (11b), with the air spring mounting portion (11b) being disposed on an outer side of a middle portion of the side beam body (11a); the cross beam (12) is provided with a central pin hole (1241); the wheel set (2) comprises an axle (21), wheels (22) and an axle box (23), with the axle box (23) being located on inner sides of the wheels (22); the primary suspension device (3) is arranged between the axle box (23) and the primary mounting seat (13); the secondary suspension device (4) is disposed on the air spring mounting portion (11b); and the bottom end of the traction device (5) is inserted into the central pin hole (1241) of the cross beam (12). In the non-powered bogie and the railway vehicle, the stability of supporting and buffering a vehicle body can be improved, and the primary mounting seat (13) as an independent component is assembled with the side beams (11) and can be suitable for bogies with various wheelbases, thereby reducing the production cost.

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 utility model provides a basic power unit for a railway vehicle and a railway vehicle marshalling, the basic power unit for the railway vehicle comprises a first vehicle and a second vehicle, and the first vehicle and the second vehicle are connected in sequence. Wherein the first vehicle is provided with a power bogie, and the second vehicle is provided with a power bogie and a non-power bogie. The railway vehicle marshalling comprises a plurality of basic power units which are arranged in sequence, and each basic power unit has the same dynamic drag ratio.

Computer-implemented-method for determining a primary set of equivalent parameter data that is associated with a primary set of equivalent parameters for indirect measurement of vibrational activity of a source component comprising a vibrational source, such as an engine, compressor, power steering apparatus or any other actively driven mechanism, wherein said source component is comprised in a mechanical subsystem, wherein the method comprises, in any suitable order, the steps of: - providing a set of vibrational measurement data that is obtained from performing vibrational measurements at a number of indicator locations on the mechanical subsystem, wherein the vibrational measurement data is indicative of measured motions of the mechanical subsystem, and / or indicative of measured strains and / or measured forces in the mechanical subsystem, at the indicator locations due to the vibrational activity of the vibrational source; - defining an initial set of equivalent parameters, wherein the primary set of equivalent parameters is a subset of the initial set of equivalent parameters; - providing a model of the mechanical subsystem, wherein said model models a relation between the initial set of equivalent parameters and the indicator locations; the computer-implemented-method further comprising, in any suitable order, the steps of: a) selecting a plurality of different subsets of equivalent parameters from the initial set of equivalent parameters; b) determining, for each subset of the selected plurality of subsets of equivalent parameters, a respective set of equivalent parameter data using a generalized inverse of the model of the mechanical subsystem and at least a part of the set of vibrational measurement data; c) determining, for each subset of the selected plurality of subsets of equivalent parameters, a qualitative parameter that is indicative for a quality of the respective set of equivalent parameter data; d) determining a score for each subset of the selected plurality of subsets of equivalent parameters on the basis of the qualitative parameter; e) selecting, on the basis of the score of each subset of the plurality of subsets of equivalent parameters, one of the subsets of the plurality of subsets of equivalent parameters as the primary set of equivalent parameters and selecting the thereto associated set of equivalent parameter data as the primary set of equivalent parameter data.

The invention relates to the technical field of intelligent equipment manufacturing, and particularly discloses an automobile power steering gear valve sleeve cutting machining device which comprises a machine body, and a machine case, a controller, a guide rail and a sliding table are arranged on the machine body; the clamping assembly comprises a clamping piece and a position adjusting piece, and the clamping assembly is used for fixing and adjusting the position of the valve sleeve; the cutting assembly comprises a power tool rest which is rotationally arranged on the outer side of the machine box, and a first machining tool and a second machining tool are arranged on the power tool rest. The calibration assembly comprises a mounting seat, a calibration piece and a calibration target, the mounting seat is arranged on the power tool rest, an insertion rod is fixedly arranged on the mounting seat, a calibration plate and a laser transmitter are arranged at the tail end of the insertion rod, the calibration target is located at the other end of the machine body, and when the inner hole and the valve sleeve are not coaxial, the position of a laser beam on the calibration target deviates; and the controller adjusts the position of the valve sleeve through the position adjusting piece. The device has the effects of improving the overall quality of a product and remarkably reducing the equipment manufacturing and maintenance cost at the same time.

A power steering controller including: a first override determination part that determines whether automatic steering of a vehicle is possible on the basis of a state of the vehicle; a second override determination part that determines whether manual steering of the vehicle is possible on the basis of a state of a driver of the vehicle; and a driving mode switching part that switches between an automatic steering mode for automatically steering the vehicle, a manual steering mode for manually steering the vehicle, and a semi-automatic steering mode for automatically steering and manually steering the vehicle, on the basis of a determination result of the first override determination part and a determination result of the second override determination part.

A method for identifying a hands-on / hands-off state. The method comprises: performing low-pass filtering on a torsion bar torque signal of an electric hydraulic power steering system of a vehicle to obtain a filtered torsion bar torque signal (S101); on the basis of the filtered torsion bar torque signal and the steering wheel angular velocity of the vehicle, determining a low-frequency factor (S102); on the basis of the filtered torsion bar torque signal and the steering wheel angular velocity of the vehicle, determining a high-frequency factor (S103); on the basis of the high-frequency factor and the low-frequency factor, determining a feature factor (S104); and, on the basis of the feature factor, identifying a hands-on / hands-off state (S105). A system for identifying a hands-on / hands-off state is also disclosed.

The utility model provides a steering system based on a yoke steering wheel and electronic steering gear box connecting structure, which comprises a steering unit, a steering unit and a control unit, the steering unit comprises a yoke steering wheel, an electronic steering gear box and a limiting mechanism, the steering unit and the control unit are installed in a ship cockpit, the steering unit is installed on a stern, and the electronic steering gear box is installed on the steering unit. The steering unit and the steering unit are both in electric control and communication connection with the control unit, and the control unit receives user operation information and actual steering data and outputs corresponding adjusting instructions through a PID algorithm. The connecting structure is compact in design, an electronic feedback system is strictly closed, the accuracy and reliability of the steering process are guaranteed, and the control performance of the ship is improved.

A steering control device configured to control a steering system, the steering system including a turning mechanism, the turning mechanism including a motor configured to generate a motor torque, the motor torque serving as a motive power for moving a turning shaft (14) to turn a turning wheel (16) of a vehicle. The steering control device includes a control unit configured to control a target control value, the target control value serving as a target of a control value for controlling the motor torque of the motor. The control unit is configured to perform compensation on the target control value; acquire an offset value; and change the target control value such that the acquired offset value gradually decreases.

The driving chassis structure of the intelligent driving automobile comprises a main beam of a frame-shaped structure, wheel bodies are arranged on the front portion and the rear portion of the left side and the right side of the main beam respectively, and the wheel body on the front side is controlled by a hydraulic power steering system to adjust the orientation; lateral movement mechanisms are further arranged on the left side and the right side of the main beam, located between the front wheel body and the rear wheel body and arranged to be in an adjustable state, and then the main beam is lifted by the lateral movement mechanisms to control the main beam to move transversely. The lateral moving mechanisms are arranged on the left side and the right side of the main beam, the lateral moving mechanisms are arranged in the adjusting state, and meanwhile the lateral moving mechanisms are connected with a hydraulic system and a control system of the vehicle, so that the states of the lateral moving mechanisms can be adjusted according to needs of a driver, the rollable ends of the lateral moving mechanisms make contact with the ground, and the vehicle is lifted to be separated from the ground; and convenience is provided for lateral movement of the vehicle.

The steering control system, electric power steering device, and steering control program of the present invention can provide a good steering feel for the driver during override. The steering control system includes: a steering angle sensor that detects the steering angle of the steering wheel; a feedback control unit that has an integrator for integrating the deviation between the detected value of the detected steering angle and a preset steering angle target value, and controls a steering actuator based on the integration result of the integrator; a steering force sensor that detects the steering force applied by the driver to the steering wheel; a standard deviation calculation unit that calculates the standard deviation of the detected steering force; and an integration suppression unit that suppresses the integration of the integrator based on the calculated standard deviation.

1. The name of the design product: the radiator of power steering controller (high power integrated). 2. The use of the design product: for the power steering controller. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The utility model discloses a three-axle bogie of a new energy rail traction locomotive, which relates to the technical field of three-axle bogies, and comprises a framework, a connecting mechanism, a sand mechanism, a buffer mechanism, a traction frame, a pull arm mechanism and a driving mechanism, the connecting mechanism is arranged at the top of the framework, the sand mechanism is arranged at the corner of the framework, and the buffer mechanism is arranged at the bottom of the framework. The multiple buffering mechanisms are installed on the two sides of the framework respectively, the traction frame is installed at the ends of the buffering mechanisms, the arm pulling mechanism is installed on the framework, and the multiple driving mechanisms are installed below the framework at equal intervals. Through the arrangement mode that the sand mechanism, the buffering mechanism, the traction frame, the pull arm mechanism and the driving mechanism are matched, the power bogie of the new energy rail traction locomotive is more compact in structure, smaller in power loss and higher in efficiency, large-torque operation can be provided for the locomotive, electric energy is saved, and cost is reduced; the use stability of the bogie is improved.

The present invention discloses a control method for a power steering and independent drive integrated wheel side electric drive device, step 1, collecting vehicle speed, accelerator pedal opening and steering wheel torque, and obtaining a target total driving torque T d And the target steering wheel steering assist torque T a ; Step 2: Calculate the target force F loaded on the rack required for rack movement a , distribute the differential power steering rack force F a1 And the dual-rotor motor power steering rack force F a2 ; Step 3, calculate the left and right wheel drive torque difference, step 4, calculate the left and right wheel drive torque; step 5, calculate the dual rotor motor outer rotor output torque T w .

Provided are a gear pump structure (100) and an electro-hydraulic power steering system (10). A base (110) of the gear pump structure (100) comprises a plurality of grooves (112). An elastic member (120) is arranged in the grooves (112) and protrudes out of the grooves, and comprises a plurality of elastic parts (122, 124, 126). The elastic parts have a plurality of protruding distances relative to the base (110), and the protruding distances are different from each other. One end of a gear assembly (130) is connected to the elastic member (120). The elastic member (120) is squeezed by the gear assembly (130) and the base (110) and is then deformed, so that the elastic parts are tightly engaged between the gear assembly (130) and the base (110). Thus, by means of the elastic member (120) having a height difference, the pressure retention and oil sealing effects are achieved, and leakage can be effectively prevented.

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.

The utility model provides a power-assisted integrated device control system, which relates to the technical field of new energy passenger cars and comprises a power steering pump, a brake power-assisted air pump, a high-low pressure double-source controller, a double-source motor, an electromagnetic clutch, a control interface module and a sensor. The power steering pump is connected with the double-source motor, and the double-source motor is connected with a crankshaft of the power brake air pump through the electromagnetic clutch. The high-low voltage double-source controller is electrically connected with the vehicle control unit through the CAN bus module, and the high-low voltage double-source controller is used for receiving an upper control signal and controlling the double-source motor to work according to the upper control signal; according to the power-assisted steering and braking device, a power-assisted steering device and a braking device are integrated, so that the whole vehicle is light in weight, meanwhile, the automatic control and adjustment functions are achieved, and the purposes of reasonably using energy, saving energy and reducing emission are achieved.

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.

A method for characterizing a sliding or stiction condition in an electrically assisted steering system includes transmitting a first steering control signal from a controller to a rotary actuator as a periodic steering conditioning signal, receiving a second steering control signal via a power steering motor throughout the test to electrically assist the steering, transmitting a third steering control signal to the rotary actuator to cause alternating rotation of the steering shaft to a desired angular rate at constant acceleration / deceleration, and measuring a steering torque output from the rotary actuator. A control action is taken when a difference in local maximum and minimum peak amplitudes of the steering torque output exceeds a calibrated threshold difference indicative of stiction.A system includes a rotary actuator, the steering system, a sleepwalker operable to measure a steering torque transmitted by the rotary actuator to the steering shaft, and the above-mentioned controller.

The invention discloses a size laser detection tool for a valve plate of a powder metallurgy power-assisted steering pump, and relates to the technical field of laser detection. The size laser detection tool for the valve plate of the powder metallurgy power-assisted steering pump comprises a bottom plate, a plurality of balls are arranged at the top of the bottom plate, an L-shaped block is fixedly connected to the top of the bottom plate, an air cylinder is fixedly connected to the top of the L-shaped block, a first moving block is fixedly connected to the telescopic end of the air cylinder, and a second moving block is fixedly connected to the telescopic end of the air cylinder. And the bottom of the first moving block is connected with a second moving block through a telescopic mechanism, and the bottom of the second moving block is fixedly connected with a mounting plate. According to the size laser detection tool for the valve plate of the powder metallurgy power-assisted steering pump, during laser detection, the valve plate can be conveniently centered and limited, meanwhile, the diameter, thickness and outer diameter of an inner hole of the valve plate can be continuously subjected to laser detection, and different positions of the periphery of the valve plate can be conveniently detected, so that the detection is more comprehensive, and the detection efficiency is improved. And the detection efficiency and quality can be improved.

The invention relates to a quenching method for a power steering rack of a vehicle, the method comprising: - a heating step in which at least one zone of an outer surface of the rack to be treated is heated by means of an electric current induced in the zone; characterized in that the method comprises: - a cooling step in which the at least one zone is cooled by means of at least one first gas stream projected onto the zone.

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 utility model discloses a multi-section conveying mechanism. The multi-section conveying mechanism comprises a large bottom plate and a stacking conveying structure. The upper-layer conveying structure comprises an upper-layer mounting bottom plate, a first belt conveying assembly and a second belt conveying assembly; the middle-layer conveying structure comprises a middle-layer mounting plate, a middle-layer fixing plate, a guide wheel, a guide screw, an adjusting ring, a first guide rail, a first guide rod, a first roller mounting plate and a first synchronous belt idle wheel, and the first synchronous belt idle wheel is connected with the first roller mounting plate and serves as a power steering transition wheel for multi-section conveying; the lower-layer conveying structure comprises a lower-layer mounting bottom plate, a lower-layer fixing plate, a second roller mounting plate and a second synchronous belt idle wheel; the second synchronous belt idle wheel is connected with the second roller mounting plate and is used as a transition wheel for power steering of multi-section conveying; the stacked conveying structures are matched with one another to achieve the left-right extending and resetting functions, and the multi-section conveying mechanism is stable in conveying structure, continuous in action, high in efficiency and capable of being compatible with lead room conveying of PCBs of various specifications.

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 drive-by-wire steering system for a power equipment device is provided. One example embodiment comprises a steering interface system, a power steering system, and a communication link connecting the steering interface system and power steering system. The power steering system can adjust an output angular displacement of steering elements of the power equipment device based on inputs received from the steering interface system. The steering interface system can receive user inputs and provide powered feedback and / or a simulated caster effect via a steering interface. Additional embodiments include power equipment devices and steering interface systems.

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.

1. The name of this design product: camshaft. 2. Application of this design product: used in power steering mechanism. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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.