5results about How to "Improved directional stability" patented technology

The invention relates to the technical field of vehicle energy recovery, and particularly discloses a braking force distribution method and device based on double-layer self-adaption, a vehicle and a storage medium, and the method comprises the steps that in response to a braking signal, the battery pack remaining capacity, a vehicle speed signal, the wheel longitudinal adhesive force, the wheel vertical force and the braking demand strength of the vehicle are obtained; the remaining electric quantity of the battery pack and the vehicle speed signal are used for entering the precondition of braking force distribution, and a real-time adhesion coefficient is determined based on a preset tire-road adhesion coefficient recognition model; based on the real-time adhesion coefficient, the wheel longitudinal adhesion force and the wheel vertical force, the optimal slip rate and the optimal adhesion coefficient of the vehicle are determined; and according to the optimal slip rate, the optimal adhesion coefficient and the braking demand strength and based on the braking force distribution model, the braking force distribution of the front and rear wheels of the vehicle is determined, the direction stability of the vehicle is effectively improved, and meanwhile, the braking energy recovery efficiency is improved to the maximum extent on the premise that the braking direction stability is met.

The application relates to the technical field of automobile brake devices, and discloses a car brake disc device, which comprises a reference frame, an inner support fixedly installed in the inner cavity of the reference frame, a disc brake mechanism arranged on the reference frame and the inner support, the disc brake mechanism being used for adsorptive braking of a vehicle, a closing mechanism arranged on the reference frame, and the closing mechanism being used for closed protection of the disc brake mechanism. Through the design of the reference frame, the inner support, the disc brake mechanism and an air source mechanism, the device can be started under emergency working conditions, a pushing assembly can be extended downwards, the hollow plate can be pushed downwards as a whole, the disc body can be tightly pressed on the road surface, a vacuum pump can be driven to work, air in the disc body is extracted to form stable negative pressure, the disc body can be firmly adsorbed on the ground, strong braking resistance can be additionally provided by virtue of the negative pressure adsorption force, and the defect of insufficient tire grip on low adhesion road surfaces can be effectively compensated.

This invention discloses a short takeoff / vertical landing (STOVL) aircraft with a hybrid propulsion system. It employs a fuselage frame as the main load-bearing structure, combined with an aerodynamic layout of all-moving canards, main wings, mid-section wings, and twin vertical tails. The hybrid propulsion system comprises four sets of cross-rotating motor-propellers and thrust-direction-adjustable STOVL level flight engines. The engines operate throughout the entire flight, while the motor-propellers are only engaged during STOVL and mode switching. Through linear adjustment of motor power, coordinated changes in engine thrust direction and magnitude, and speed-dependent aerodynamic lift of the wings, seamless and smooth transitions are achieved between STOVL / hovering, mode switching, high-speed level flight, and payload modes. Compared to existing technologies, this design reduces structural dead weight and control complexity, extends endurance, and balances STOVL flexibility with high-speed cruise efficiency.

The present invention discloses an energy-saving vehicle frame with adjustable front wheel parameters, which relates to the technical field of vehicle manufacturing, and comprises a frame body, wherein both sides of the top of the frame body are fixedly connected with slide rails, a pair of the slide rails are slidably connected with bases, a pair of the bases are swingably connected with ball pins, the tops of a pair of the ball pins are fixedly connected with bottom plates, a pair of the tops of the bottom plates are fixedly connected with columns, and a pair of the columns are slidably connected with wheel mounting frames. The present invention has a reasonable structure, and can be adjusted by setting a wheelbase adjustment component, a toe adjustment component, a camber angle adjustment component, a horizontal adjustment component, a caster angle adjustment component, and a wheel ground clearance adjustment component, thereby realizing front wheel track adjustment, front wheel toe adjustment, kingpin camber angle adjustment, kingpin caster angle adjustment, and wheel ground clearance adjustment, without manual adjustment, saving time and effort, and real-time adjustment, thereby improving the vehicle performance during the driving process of the energy-saving vehicle.