1566results about How to "Smooth ride" patented technology

A socket fixed to a heat sink holds a card-type LED module formed by integrating LED elements. The socket (6) includes: a frame structure for holding the LED module (1000) with its light source unit exposed through the frame opening; and a pressing member positioned around the opening for pressing the back surface of the LED module against the heat sink (2122). The socket may include a structure including a lower member (61) placed on a heat sink and an upper frame member (62) holding the LED module with its light source unit (1002) exposed through the frame opening. The upper member supported by the lower member via a hinge can open / close, and includes a pressing unit pressing the LED module set in the open state, against the lower member (61). The lower member (61) includes, in its main part, a lock unit (63) directly or indirectly lock the upper member (62) when the upper member is closed.

A control apparatus for a multi-phase rotary machine includes a control unit and a plurality of power supply systems including respective inverter units. When a short-circuiting failure occurs in one of the systems due to an ON-failure in any one of FETs in an inverter unit of the failure system, the control unit stops driving of the rotary machine by bringing all the FETs in the failure system into the OFF state. The control unit controls FETs of the non-failure system such that a brake torque generated in the failure system is cancelled or the influence of the brake torque exerted on the driving of the motor is reduced.

A non-pneumatic tire for supporting a load by working in tension comprising a generally annular inner surface, a generally annular outer ring, and an interconnected web having a plurality of web elements and comprising a plurality of generally polygonal openings. Web elements are sized, oriented and comprised of a material that facilitates buckling when subjected to a compressive load. By buckling, those elements in a deformed portion of the tire between a hub and a footprint region where the tire contacts a surface may assume a significantly reduced portion of the load, if any. This causes web elements in other portions of the interconnected web to operate in tension to support the load. Since the tire is non-pneumatic, it may be easier to maintain and may have a longer life than standard pneumatic tires since it eliminates the possibility of blowouts, flat tires, or tires operating with low air pressure. By virtue of the portion of the tire in the footprint region not bearing a significant portion of the load, non-pneumatic tire may also exhibit a more comfortable ride subject to less noise and vibration and improved handling capabilities.

A stair-climbing wheelchair has a pair of track assemblies that can be placed in an operative drive mode to propel the wheelchair along ascending and descending paths of travel relative to an obstacle such as a stairway, curb, or the like. Each track assembly includes a guide member with rollers at opposite ends thereof carrying an endless cleated belt. The guide member is arched between its end sections thereby permitting the endless belt to deflect upwardly between the rollers when the endless belt engages an obstacle such as a step, curb or the like. This permits a smooth gradual transition of the wheelchair onto and / or off the top step of a staircase. Preferably, each track assembly also includes an inclined tail section having a separate endless cleated belt. The track assemblies can also be utilized in connection with remote control and / or unmanned motorized vehicles.

The invention discloses an ArcGIS-based map building and intelligent vehicle autonomous navigation method and system. The method comprises the following steps: 1, acquiring longitude and latitude information of a region to be navigated through equipment; 2, building and drawing a two-dimensional vector map and a road section text file of a fork road by using an ArcGIS tool; 3, obtaining the shortest path by using a path planning tool, and extracting a track from the path; 4, carrying out coordinate system conversion on the track, wherein during autonomous navigation, a 5-meter interpolation algorithm is used; obtained path points are very smooth; the number of the path points is increased, path precision of the road section is improved, and driving steadiness is guaranteed; furthermore, the time for path searching is not obviously prolonged. The method can supply more precise and more intensive tracking points to intelligent vehicle autonomous navigation under a condition of use of a map with the same complexity, and the tracking points are converted into coordinates under an intelligent vehicle coordinate system, so that the curve fitting difficulty is reduced.

The invention relates to a virtual constraint-based automatic driving vehicle path planning method. The method comprises the following steps that: a lane center line course under a vehicle body coordinate system is obtained according to a lane line detection result; the course of a vehicle is corrected through using a Kalman filter and the obtained lane center line course; a path point in an original path is corrected through using the corrected vehicle course; a relative lateral position relationship between the automatic driving vehicle and a road is obtained based on a three-dimensional laser radar grid map; virtual constraints are generated; and a desired path is generated according to the decision-making instruction of an automatic driving system. According to the method of the invention, GPS, vision and laser radar information is integrated to complete the precise positioning of the relative lateral position relationship of the vehicle and the road, and high-precision positioning equipment and high-precision maps are not required, the improvement of the lane maintaining capability and lane changing capability of the automatic driving vehicle under a structuralized urban or highway environment with clear lane lines can be facilitated, and the method is of great significance for the safe, stable and smooth driving of the automatic driving vehicle.

A loader type construction vehicle includes a chassis having a longitudinal axis, a plurality of wheeled ground-engaging structures pivotally coupled to the chassis, and a steering control system. Each of the plurality of ground-engaging structures includes a wheel pivotable about a steering axis and drivable about a drive axis, wherein each of the wheeled ground-engaging structures is shaped and configured so that the wheel of each of the ground-engaging structures can be pivoted from a first angular position in which the drive axis is perpendicular to the longitudinal axis, to a second angular position that is at least 90° degrees from the first angular position. The steering control system is operatively connected to each of the ground engaging structures for pivoting the wheel of each of the ground-engaging structures about the steering axis. The steering system may be operable to selectively configure the ground engaging structures into a plurality of different steering configurations, such as crab steering and side steering. The loader vehicle may include a telescopic loader arm.

The invention discloses an automobile body stability control system for an electric automobile. A hierarchical control structure is adopted for the system. An upper layer controller aims at achieving yaw stability control, wherein the yawing moment required in the whole automobile movement process needs to be calculated, required signals are provided by sensors, and the required yawing moment can be calculated according to the signals and is compared with the practical value. The control target of a lower layer controller is achieved by ensuring that yawing moment instructions sent by the upper layer controller are distributed through braking force, wherein the lower layer controller controls motor moment distribution and the slip rate of wheels so that the required yawing moment can be obtained for an automobile and the automobile can stably run.

The invention relates to a sightseeing rail car. The rail is an H-shaped steel rail, each other carriage is only provided with a rear driving axle and a rear driving wheel except the first carriage, the front and rear carriages are lapped and connected by a universal bearing connector, the front steering axle and the rear driving axle are connected with the carriage in a pivoting support mode, a driving motor is arranged at the bottom of every one to three carriages, and a safety pressure rod is arranged on each row of seat. The sightseeing rail car has the characteristics of reasonable structure, running stability, high passenger capacity, low noise, long continuous running time and the like, and is suitable for complex sites with many bends, small radii and slopes in indoor and outdoor sightseeing amusement.

The invention relates to a sorting and carrying AGV comprising an underpan, a jacking mechanism, an infrared photoelectric sensor, an ultrasonic sensor, a control device and a power supply. Each of the front and rear ends of the underpan is provided with two driven wheels, and two sides of the middle part of the underpan are provided with driving wheels respectively and first driving mechanisms driving the driving wheels to rotate; the jacking mechanism comprises a lifting platform and a plurality of pillars supporting the lifting platform, wherein the lifting platform is provided with a tray and a rotating device for driving the tray to reversely rotate relative to the turning direction of the AGV, and the underpan is provided with a second driving mechanism for driving the lifting platform to go up and down; the infrared photoelectric sensor is arranged on the underpan and is used for detecting a pavement tracing line; the ultrasonic sensor is arranged on the underpan and is used for detecting a barrier; the control device is arranged on the underpan and is in communication connection with the first driving mechanisms, the rotating device, the second driving mechanism and the infrared photoelectric sensor and the ultrasonic sensor; and the power supply is used for supplying power to the first driving mechanisms, the rotating device, the second driving mechanism and the control device.

A bolster spring assembly is adapted for securement to a vehicle having a primary suspension system for securing an axle to the vehicle. The bolster spring assembly is located and secured between the leaf spring over the axle and the undercarriage of the vehicle as a supplement to the primary suspension system.

A watercraft seat suspension includes a damper mounted between a watercraft seat and the watercraft hull. The damper includes an electrically actuated mechanism controlling fluid flow from a first chamber to a second chamber within the damper. A sensor senses motion of the seat relative to the hull. A control unit interpolates the sensor signal and develops an actuating signal controlling the electrically actuated mechanism. In one arrangement, the electrically actuated mechanism is a solenoid actuated by the actuating signal to effect one of two different damping modes. In another arrangement, the electrically actuated mechanism includes a conductor coil and flux ring generating a magnetic field proportional to the actuating signal to vary the viscosity of magneto-rheological fluid in the damper.

This invention pertains to an economical method of easy conversion of any internal combustion fueled vehicle into a fuel saving hybrid electric vehicle (HEV) by an add-on kit, without replacing the engine and with a minimal modification of the vehicle body. The converted vehicle has a substantially longer driving range on the same amount of fuel than the vehicle before this conversion.

An object of the present application is to provide a method and a device for controlling vehicle travel, wherein the method comprises: identifying a traveling vehicle in a target area; acquiring vehicle environment information of the traveling vehicle in the target area; and based on the vehicle environment information, The vehicle-mounted terminal of the traveling vehicle transmits traveling instruction information. Compared with the prior art, the present application does not need to rely on the deployment of a complex and accurate sensing device on a traveling vehicle, even if only a few sensing devices are deployed on the traveling vehicle, or even deployed without deployment The device based on the present application can still achieve accurate control of the running of the vehicle in the target area. Therefore, the present application has less modification to existing vehicles and low power consumption of the vehicle, thus bringing about the overall technical costs reduce.

The invention relates to a swaging manufacturing method of a light aluminum alloy rim. The method comprises the following processing steps: (1) baiting; (2) heating; (3) carrying out ring rolling; (4)manufacturing a spinning blank; (5) carrying out hot spinning; (6) carrying out head back hot spinning; (7) carrying out heat treatment; and (8) fine machining the blank into a rim product. The performance indexes of the rim all reach national standards. The method only needs a pair of spinning moulds, i.e. an upper spinning mould and a lower spinning mould for processing, wherein the moulds havesimple structure, easy manufacture and low manufacturing cost. High temperature and high speed hot spinning processing is adopted so as to ensure that the metallographic structure of the rim has uniformity, refined crystalline grain, light weight, thin thickness, mechanical property improvement of the rim, high precision and good quality, and compared with a rim processed by cold spinning, the rim of the invention cannot crack and generate pinholes and has long service life. The blank processed by the method is annular and has high material utilization rate, less waste and processing amount reduction. Meanwhile, the invention provides a new variety for the rims in the car accessory market. Consumers can conveniently replace and adjust the rims of different shapes and types as required atany time without dismantling a tire so as to quickly change the type of the whole tire.

The invention discloses a dual-motor redundant steer-by-wire device and a control method thereof. The device comprises an electric control unit (ECU), a torque sensor, a motor, a steering gear rack, asteering gear pinion and a steer-by-wire mechanism. The electric control unit (ECU) of the device judges the steering intention of a driver by collecting steering wheel turning angle signals; when the steer-by-wire mechanism works normally, an electromagnetic clutch is disengaged, the motor plays a part in providing road feel, and a roller screw steering mechanism completes a steering instruction; when the steer-by-wire mechanism breaks down, the electromagnetic clutch is engaged, the motor rotates reversely, and the steering gear pinion and the steering gear rack complete the steering instruction and play a part in providing steering assistance. The device is simple in structure, high in precision and reliable in work, by means of the roller screw steering mechanism, steering displacement can be precisely controlled, and meanwhile, the device can automatically return to a mechanical steering state when the steer-by-wire mechanism fails to complete the steering instruction.

The invention is a suspension system, typically for use between a cab and a truck frame, includes a strut module having a strut and an air spring, and a control module, connected to a source of pressurized air, for sensing a distance between the cab and truck frame and selectively pressurizing the air spring in response to changes in that distance. Preferably, the strut is a McPherson-type strut and the air spring encloses at least a portion of the strut to provide a compact assembly and includes a three point connection to the cab and frame to resist relative lateral movement between the cab and frame. The strut also preferably is a magnetorheological-type damper so that the control module can adjust the damping characteristics of the strut to optimize rider comfort.

The invention provides an intelligent decision-making and local trajectory planning method for an autonomous vehicle and a decision-making system thereof. The method comprises the following steps: step 1, sampling a given vehicle current position and a given target position point according to road information; step 2, simplifying trajectory calculation through a Frenet coordinate system, interpolating a path corresponding to a future traversal trajectory of the vehicle by using a polynomial, and solving a trajectory set through an initial state and a target state of the vehicle; step 3, carrying out cost evaluation on the track set, performing sorting according to a minimum principle, and sequentially checking whether constraint conditions are met or not according to a sorting result until an optimal track meeting the constraint conditions at the same time is determined; and step 4, after the optimal track is obtained, issuing a driving command for vehicle motion control. According to the method, the complex nonlinear trajectory planning problem is simplified, the trajectory planning difficulty is reduced, a smooth and smooth trajectory is planned, and the vehicle can run more stably.

The invention discloses an electronic parking braking method. The method comprises the following steps of: first, parking braking, namely transferring prestored air pressure in an air reservoir to brake chambers of each wheel by controlling an active air supply electromagnetic valve to realize the parking braking; and second, releasing braking, namely when a road section is a straight road surface, simultaneously releasing a drive wheel and a driven wheel of a controlled vehicle once; and when the road section is a downhill road section or an uphill road section, adopting a corresponding control strategy according to the rotating situations of each wheel of the vehicle, and releasing the air pressure in the brake chambers of each wheel of the controlled vehicle separately by utilizing a pressure maintaining effect of an antilock brake system (ABS) electromagnetic regulating valve. The electronic parking braking method has a reasonable design, low investment cost, high intelligence degree and good use effect, is convenient to operate, and solves the practical problems of high technical requirements on drivers, brake force transfer gap of mechanical system, great difficulties in starting operation on low-adhesion coefficient road surface and ramp, poor use effect and the like in a conventional mechanical parking braking system.

The invention relates to a pneumoelectric hybrid power passenger vehicle control system and a control method of the pneumoelectric hybrid power passenger vehicle control system. The vehicle control system comprises a vehicle controller, a battery mechanism, a high-voltage power distribution box, a motor controller, a driving motor, an engine, a BSG motor or ISG motor, a speed reducer, an instrument mechanism, a gear mechanism, a braking mechanism, an accelerator mechanism, a power generator and a super capacitor, wherein the engine is in hybrid linkage with the driving motor, and the engine is driven and started by the BSG motor; the power generator is assembled at the power output end of the driving motor; the super capacitor is connected with the vehicle controller through a CAN bus. According to the vehicle control system, the high-speed-CAN-bus-based distributed power system control network with the vehicle controller as a main node is used, distribution of power of the motor is calculated through comprehensive vehicle information, the SOC, the temperature, the voltage and the current of a battery, the temperature information of the motor, and other information, and therefore the vehicle can be driven, braking energy feedback of the vehicle can be achieved, and the best driving performance can be acquired under allowance of the system.