9397 results about "Treadle" patented technology

To ensure the rigidity of a floor panel against a load in a vertical direction in an electric vehicle having a step in the floor panel.SOLUTION: A rear floor panel 10 of an electric vehicle has an inclined part 16 that extends while inclining upward as it heads for backward from a rear end of a plane part 12. A floor cross member 20 is disposed in a front part of the inclined part 16 on the side of an upper surface of the rear floor panel 10. An under-floor reinforcement 30 is disposed in the front part of the inclined part 16 on the side of a lower surface of the rear floor panel 10. A front end of the under-floor reinforcement 30 is disposed ahead of the front end of the inclined part 16, and a rear end of the under-floor reinforcement 30 is disposed on the inclined part 16. The under-floor reinforcement 30 and the floor cross member 20 are joined with the rear floor panel 10 therebetween.SELECTED DRAWING: Figure 6

A foldable leg lift machine includes a base unit, a main handle unit, two drive levers, two pedals, and a linkage mechanism. The base unit includes a first stand, a second stand pivotally connected with the first stand, and two third stands pivotally connected with the first stand. The main handle unit is connected with the first stand and provided with a handgrip. Each of the drive levers is pivotally connected with one of the third stands. Each of the pedals is pivotally connected with one of the drive levers. The linkage mechanism includes a swing base pivotally mounted on the third stands, and two linkage rods each pivotally connected with the swing base and pivotally connected with one of the two drive levers.

A freewheel adjustable wheel of the present invention comprises: a rotary gear unit that is rotated by receiving power from a pedal part and is provided with a gear along the outer circumference thereof; a case part that supports the rotary gear unit to be rotatable; a clutch bearing that transmits the power to the case part when the rotary gear unit rotates in the forward direction; a clutch hub that rotates together with the rotary gear unit; clutch gears installed on the clutch hub and fixed to the case part; and a drive unit that supplies rotational power; and a moveable gear unit moved by means of the power of the driving unit.

A method and system for calculating a torque required by a driver, and a vehicle and a storage medium. The method for calculating a torque required by a driver comprises: acquiring the opening degree of an accelerator pedal of a target vehicle, the actual speed of the target vehicle, the actual acceleration of the target vehicle, and the gradient of the current road on which the target vehicle is travelling (S101); determining a target acceleration on the basis of the opening degree of the accelerator pedal and the actual speed (S102); subtracting the target acceleration from the actual acceleration to obtain an acceleration difference (S103); on the basis of the acceleration difference, performing closed-loop correction on a required torque, so as to obtain a corrected torque (S104); on the basis of the actual speed and the gradient of the current road on which the target vehicle is travelling, determining the coasting resistance torque and gradient resistance torque of the target vehicle (S105); and adding up the corrected torque, the coasting resistance torque and the gradient resistance torque to obtain a torque required by a driver (S106). The method can automatically adapt to a change in the gradient of a road, such that a torque required by a driver can be accurately and effectively calculated, thereby improving the driving experience of the driver.

The present invention relates to a stair stepper, including: a rack provided with two slide rails, each of the slide rails is slidably provided with one pedal component, where the two pedal components form linkage in the form of reverse synchronous movement; and a damping mechanism, including a linear elastic element, where the linear elastic element is straddled between the two slide rails, two ends of the linear elastic element are respectively connected to the pedal components. The linear elastic element expands or contracts with the reverse synchronous movement of the pedal components, to form a changing elastic force, and the changing elastic force acts on the pedal components, to form resistance to the movement of the pedal components.

The present application relates to the technical field of vehicles, and provides an energy recovery control method and device, and a vehicle, aiming to provide an energy recovery strategy during driving downhill and improve the driving comfort in a downhill state. The method comprises: in response to the working condition of a vehicle meeting an energy recovery condition, detecting the state of the vehicle; when the vehicle is in a downhill state, acquiring the current opening degree and the current change rate of an accelerator pedal of the vehicle; determining a driving intention of the vehicle on the basis of the current opening degree; and triggering an energy recovery strategy corresponding to the driving intention so as to carry out energy recovery, wherein an energy recovery strategy corresponding to a slip driving intention comprises determining a target recovery torque on the basis of the current vehicle speed of the vehicle, and an energy recovery strategy corresponding to an accelerated driving intention comprises determining a target recovery torque on the basis of the current opening degree and / or the current change rate.

A “one-pedal rocking mode” for extricating an electric vehicle from a stuck condition is implemented by: receiving, via a human-machine interface (HMI) of the electric vehicle, an indication of a user selection to activate the one-pedal rocking mode; operating the electric vehicle in the one-pedal rocking mode responsive to detecting movement of an accelerator pedal of the electric vehicle; controlling at least one electric motor of the electric vehicle to: (i) apply a forward torque to corresponding drive wheels when the accelerator pedal is in a first pedal position that exceeds a forward threshold, (ii) apply a reverse torque to the corresponding drive wheels when the accelerator pedal is in a second pedal position that is less than or equal to the forward threshold; and exiting the one-pedal rocking mode by switching operations of the electric vehicle to a second operating mode responsive to detecting an exit condition.

The invention relates to an automatic telescopic electric pedal system and a use method thereof. The automatic telescopic electric pedal system comprises a control unit, an instruction input unit, a vehicle state detection unit, an intelligent preheating unit, an omnibearing obstacle detection unit, a self-adaptive adjustment unit, an intelligent interaction unit and an emergency management unit. On the one hand, the omnibearing obstacle detection unit builds a first safety defense line, through precise sensor layout and efficient data processing flow, rapid early warning and timely avoidance of potential collision risks are achieved, and running safety of the pedal is guaranteed. And on the other hand, after the emergency management unit receives the fault information, corresponding processing strategies are rapidly and accurately matched according to multiple built-in preset emergency schemes and aiming at different fault types, and emergency signals are sent to the vehicle central control system at the same time, so that driving and getting-on and getting-off safety is guaranteed in an all-around mode; the system can deal with sudden failures or potential collision risks in order, and the life and property safety of people in the vehicle is practically guaranteed.

The invention discloses a vehicle control method and device and a vehicle. The method comprises the steps that in a current stroke determination period, when it is determined that an accelerator is released and a brake pedal is stepped down, the current stroke of the brake pedal is determined; if the difference value between the current stroke and the previous stroke of the previous stroke determination period is smaller than or equal to a preset difference value threshold value, the current deceleration is determined according to the current stroke, and the motor is controlled to decelerate according to the current deceleration and a proportional-integral control strategy; if the difference value between the current stroke and the previous stroke is larger than a preset difference value threshold value, or the duration of the maximum stroke of the current stroke reaches a first preset duration, an electromagnetic brake is controlled to conduct braking; and in the process of controlling the motor to decelerate, if the duration of the opposite actual rotation direction of the motor to the initial rotation direction reaches a second preset duration, updating the proportional-integral control strategy, and controlling the motor to operate according to the updated proportional-integral control strategy. According to the technical scheme, the vehicle can be better controlled.

The present application relates to the technical field of piano, in particular to a piano pedal system, comprising an external unit and an additional unit; the external unit comprises: an external pedal module comprising at least one external pedal; a data acquisition module for acquiring the pedal data of the external pedal; a height adjustment module comprising a driving mechanism and two supporting mechanisms, the driving mechanism comprising a driving motor, a driving gear fixedly connected with the output shaft of the driving motor and two driving racks, the two driving racks being oppositely engaged on both sides of the driving gear, the supporting mechanisms being one-to-one arranged with the driving racks, the supporting mechanisms being connected between the driving racks and the external pedal module, the driving racks driving the supporting mechanisms to stretch or retract to realize the height adjustment of the external pedal module; the additional unit is used for stepping on the corresponding piano pedal according to the pedal data. The present application can be applied to different types and models of pianos and improve the accuracy and convenience of the height adjustment of the pedal.

The invention discloses a vehicle torque control method and device, a computer readable storage medium and a vehicle, and relates to the field of vehicle control. The scheme comprises the steps that first torque is generated according to a vehicle torque request, and second torque is generated through filtering; generating a base torque gradient according to the vehicle state and the second torque; obtaining a corrected torque gradient according to the dynamic correction coefficient; generating a dynamic zero-crossing region threshold according to the vehicle state and the corrected torque gradient; and performing torque control on the zero-crossing region according to the dynamic zero-crossing region threshold. The threshold is dynamically adjusted based on the vehicle state, and it is ensured that the zero-crossing range meets the actual working condition requirement. The dynamic property and the smoothness are balanced through correction coefficient and gradient control, the dynamic response is guaranteed, meanwhile, precise control over the zero-crossing area is achieved, the problems of vehicle structural collision abnormal sound and the like are solved, meanwhile, the controllability of an accelerator pedal is enhanced, and the driving experience feeling of a user is improved.

The invention discloses an assembling device for a front foot ladder of a metal herringbone ladder. The assembling device comprises a ladder pipe feeding mechanism, a horizontal drilling mechanism, a foot sleeve mounting mechanism, a front foot ladder accessory shaping mechanism and a front foot ladder accessory shaping mechanism, the ladder pipe is horizontally transferred to a horizontal drilling station, the ladder pipe is clamped, horizontally transferred, clamped and fixed through a horizontal drilling mechanism, and the inner side of the ladder pipe is drilled and tapped or / and punched; the foot sleeve mounting mechanism jacks the foot sleeve into the tail end of the ladder pipe, and then applies external force to extrude and deform so as to fix and limit the foot sleeve at the tail end of the ladder pipe; the front foot ladder accessory shaping mechanism grabs ladder pipes, cross rods and top pedals, the ladder pipes, the cross rods and the top pedals are obliquely turned and placed at preset positions in a splayed shape, and frame installation of a front foot ladder is completed. The vertical drilling and tapping mechanism is used for transferring the front foot ladder to a vertical drilling and tapping station, and the cross rod and the top pedal are locked on the ladder pipe, so that the whole frame of the front foot ladder is fixed. The assembling device is reasonable in structure, easy to operate, high in automation degree and high in efficiency, and production benefits are maximized.

The invention relates to the field of vehicle driving motor control, and particularly discloses a wheel side driving motor working state control method and device, and the method comprises the steps: obtaining the instantaneous whole vehicle demand torque according to the real-time accelerator pedal opening degree and the real-time vehicle speed; according to the road gradient and the real-time vehicle speed, the whole vehicle demand torque is predicted; the minimum value of the instantaneous whole vehicle demand torque and the predicted whole vehicle demand torque is taken as the actual whole vehicle demand torque; and controlling the working state of the driving motor according to the actual vehicle demand torque. According to the method, unreasonable driving of a driver is restrained, the actual whole vehicle demand torque is determined by calculating and predicting the whole vehicle demand torque and combining the instantaneous whole vehicle demand torque, power demands of the vehicle under different road conditions and loads are matched, insufficient or excessive power is avoided, the vehicle runs more smoothly, the safety of vehicle driving is improved, and the driving safety of the vehicle is improved. Overload of vehicle mechanical parts is avoided, the service life of the vehicle mechanical parts is prolonged, the working state of the driving motor is reasonably controlled, and energy consumption and vehicle operation cost are reduced.

The invention is suitable for the technical field of drifting control, and provides an electric vehicle auxiliary drifting control method which comprises the following steps: calculating an ideal drifting balance point and related parameters under any working condition according to vehicle dynamics and a tire model; when the vehicle is in the specific driving mode, judging whether an auxiliary drift intervention threshold value is reached or not according to the driver operation and the vehicle state, and if yes, starting auxiliary drift control. According to the control, through a feedforward and feedback mode, the torque of front and rear wheels cooperatively works to achieve drifting. And meanwhile, the torque of different sources is adjusted by using the weight coefficient so as to adjust the auxiliary drift intervention intensity. When it is detected that the accelerator pedal of the driver is smaller than the threshold value, the auxiliary drifting quit threshold value is reached, and control quits immediately. The auxiliary drifting can be timely intervened when the driver does not operate the steering wheel, the driving threshold is lowered, the dependence on the steering wheel is reduced, and the driving experience is optimized; personalized adjustment can be achieved, the drifting safety is improved, and a driver can enjoy drifting pleasure at ease.

A vehicle acceleration control method, includes: obtaining a change rate of an accelerator pedal opening degree of an accelerator pedal and a remaining energy value of a vehicle in a racetrack mode; determining a target torque compensation value based on the change rate of the accelerator pedal opening degree and the remaining energy value of the vehicle; and controlling the vehicle to accelerate based on a sum of the target torque compensation value and a maximum output torque value.

The utility model discloses a support assembly of an automobile electric pedal, which relates to the technical field of automobile electric pedals and comprises a base and a supporting portion, a first rotating arm and a second rotating arm are arranged between the base and the supporting portion, and two ends of the first rotating arm and two ends of the second rotating arm are respectively and rotatably connected with the base and the supporting portion. The driving element drives the first rotating arm to rotate, the second rotating arm rotates synchronously, and the first rotating arm and the second rotating arm drive the supporting part to move horizontally in the X direction, the Y direction and the Z direction. The double rotating arms are adopted, the stability of the supporting part is guaranteed, the supporting part can be directly used as a pedal, the requirement for the stability of the pedal can be met only through one support assembly, and the production cost is saved.

A stowable tailgate step assembly system comprises a frame with two interconnected frame arms adapted to be mounted longitudinally in a vehicle tailgate. A slide module, releasably latched to the frame, comprises two longitudinal carrier arms which translate in relation to the frame arms, and a step assembly. The step assembly comprises two slide arms which translate in relation to the carrier arms, and a first step and at least one additional step pivotally connected by at least one link rod to facilitate synchronous rotation of the steps. Control means to control rotation of the steps during translation of the carrier arms from a stowed position to an extended position are provided. Deployment means to control rotation of the steps between the extended position and a deployed position are also provided. A lock-out latch rotationally connected to at least one carrier arm engages at least one associated frame arm to prevent translation of the carrier arm in relation to the associated frame arm when the step assembly is in the extended position.

The invention relates to the technical field of vehicle braking control, and discloses a vehicle braking control system based on a high-speed permanent magnet synchronous motor, which comprises a state sensing module, a braking force calculation module, a braking force control module and a braking force control module, the torque distribution module distributes the total braking torque into a predictable regenerative component and a precisely matched friction component, a deterministic regenerative braking force datum line is established, a braking system is converted into stable output control from passive response energy fluctuation, and linear mapping of pedal travel and deceleration is achieved; and meanwhile, by combining road bumping degree perception and model online correction, the output stability is kept under the complex working condition, and the technical problem that energy recovery and control quality in a hybrid braking system are difficult to consider at the same time is solved.

The invention relates to a vehicle control method and device, a vehicle and a medium, and relates to the technical field of control. The control method comprises the steps that according to the first pedal opening degree of an accelerator pedal of the vehicle, the acceleration intention of a driver of the vehicle is determined; according to the acceleration intention and the running speed of the vehicle corresponding to the first pedal opening degree, a correction coefficient corresponding to the first pedal opening degree is determined; determining a second pedal opening degree according to the correction coefficient and the first pedal opening degree; and performing acceleration control on the vehicle according to the second pedal opening degree. According to the technical scheme, the energy utilization rate of the vehicle can be increased.

The invention relates to a pedal assembly and a vehicle. The pedal assembly comprises a pedal support used for being connected with a chassis of the vehicle; the pedal outer edge is connected with the pedal bracket; the movable pedal is movably mounted on the outer edge of the pedal; the adjusting mechanism is connected with the pedal outer edge and the movable pedal and used for driving the movable pedal to move or rotate relative to the pedal outer edge so as to adjust the posture of the movable pedal. According to the pedal assembly, the adjusting mechanism can drive the movable pedal to move or rotate relative to the outer edge of the pedal so as to adjust the posture of the movable pedal, so that the pedal assembly has the pedal function for people to get on and off a vehicle, and the driving posture of the vehicle can be adjusted by adjusting the posture of the movable pedal; a special posture adjusting device does not need to be additionally and independently arranged, so that the occupied vehicle installation space is effectively reduced, integration of the pedal function and the posture adjusting function is achieved, and the practicability and adaptability of the vehicle in the complex driving environment are improved.

The invention discloses an electric vehicle abrupt slope slow descent control method and device and a medium, and relates to the technical field of automobiles. The method comprises the steps that if the opening degree of an accelerator pedal and the opening degree of a brake pedal are zero and the pitch angle continuously exceeds a ramp threshold value, a vehicle enters a sliding mode; if the vehicle speed change rate is continuously positive and exceeds a preset slope threshold value, abrupt slope slow descent is triggered; the output torque of the driving motor is cut off, motor reverse dragging braking is started, and a pre-pressurization mechanism of mechanical braking is synchronously triggered; the vehicle speed at the activation moment is set as the initial vehicle speed, the motor rotating speed, the battery temperature and the vehicle pitch angle are collected in real time, and the corrected target vehicle speed is generated; a total recovery torque is calculated based on a difference between the current vehicle speed and the corrected target vehicle speed. According to the method, the vehicle speed can be automatically controlled when the vehicle goes down the long slope, the vehicle is kept sliding without acceleration, the braking thermal failure caused by frequently stepping on the brake pedal is solved, and the driving safety of the vehicle is improved.

Disclosed is a stair tread template ruler, including a main ruler body, and two side ruler bodies. Either of the side ruler bodies is provided with a sliding member that can slide in a reciprocating manner, and the main ruler body is hingedly connected to the sliding members. The two side ruler bodies are arranged at both ends of the main ruler body, and the main ruler body and the two side ruler bodies cooperate to contour a space such as a staircase. The two side ruler bodies are connected to the main ruler body, the sliding members can slide to meet various use requirements, and the main ruler body is rotatably connected to the sliding members, which facilitates adjustment of a relative angle, meets user needs, and simplifies folding and storage. The main ruler body has a multi-segment structure, and each segment is slidably connected to another.

The invention discloses a dynamic adjusting method, device and equipment for vehicle braking force and a medium. The method comprises the steps that when a vehicle is braked on a ramp road section, the ramp angle of the ramp road section is determined; according to the driving direction of the vehicle on the ramp road section, the ramp angle, the brake pedal pressure, the vehicle gravity and a preset braking performance coefficient, the target braking force of the vehicle is calculated, and the braking performance coefficient is used for representing that when the vehicle is braked on a non-ramp road section, the target braking force of the vehicle is obtained. The conversion relation between the brake pedal pressure and the target brake force is obtained; the braking air pressure of a vehicle brake is adjusted according to the target braking force, so that the wheel end braking force of the vehicle reaches the target braking force, the vehicle braking force is dynamically adjusted according to the ramp angle, the braking performance is optimized in real time, it is ensured that the vehicle can keep consistent braking feeling under different gradients, the fatigue of a driver is effectively reduced, and the driving safety is improved. The emergency braking safety is improved, meanwhile, the predictability and consistency of the braking system are enhanced, and the driving experience is optimized.

The present invention relates to the technical field of rail transit evacuation mechanisms, and particularly to a new type of side door lifting evacuation ladder for urban rail vehicles; it includes a frame assembly, a driving mechanism, a rotating arm assembly, a manual operation device, and a pedal assembly: the frame assembly includes a frame structure, a guide rail slider pair, and a gas spring. The guide rail slider pairs are respectively fixed on both sides of the frame structure to guide the up and down sliding of the pedal assembly. One end of the gas spring is hinged to the frame structure, and the other end of the gas spring is hinged to the first-level pedal of the pedal assembly. The structure achieves the effect that the lifting evacuation ladder can be automatically opened and closed, with simple operation and high automation degree. At the same time, it can be used in emergency situations such as power failure, greatly improving the train's escape and evacuation ability.

The invention belongs to the field of vehicle stability control, and particularly relates to a control method suitable for integration of four-wheel independent drive and active rear wheel steering. Comprising the steps of establishing a whole vehicle dynamics model suitable for controller design, performing stable region division by combining front and rear wheel side slip angle phase planes, setting an ideal yaw velocity and an ideal side slip angle, designing a feedforward and PID feedback integrated controller, performing torque distribution and the like. According to steering wheel rotation angle input, corresponding parameters of the vehicle are combined, the vehicle stability coefficient, the ideal yaw velocity and the side slip angle are calculated, the feedforward and PID feedback integrated controller inputs the calculated rear wheel rotation angle into the controlled vehicle, the calculated additional yaw moment obtains the basic driving moment based on pedal information, and the vehicle stability coefficient, the ideal yaw velocity and the side slip angle are calculated. Torques corresponding to four wheels are input to a controlled vehicle through torque distribution, so that the purpose of integrated control is achieved, and the vehicle handling stability is improved.

Provided herein is a ladder that includes a cantilevered step. The ladder, for example, may be a stepladder ladder having a cantilevered step disposed at one or more positions on a rail assembly, for example on the front rail assembly. In one illustrative configuration, the cantilevered step may include a first or secured portion that is disposed between a first rail and a second rail of the rail assembly. The cantilevered step may also include a second or extended portion that is cantilevered from the first portion and extends beyond the first rail and the second rail. The second or extended portion of the cantilevered step may be coupled to the first or secured portion along at least two discrete attachment surfaces.

A pedal includes a pedal body, a force detection module, a rotation shaft, an insulating sleeve, electrically conductive rings, and contact elements. The pedal body has a first accommodating space and a second accommodating space. The force detection module is disposed in the first accommodating space. The rotation shaft passes through the pedal body. Annular accommodating regions and wire perforations are recessed from a surface of the rotation shaft. Transmission wires pass through the wire perforations. The insulating sleeve is sleeved on the rotation shaft. Annular insulating regions are recessed from a surface of the insulating sleeve and correspondingly cover the annular accommodating regions. The electrically conductive rings are respectively sleeved on surfaces of the annular insulating regions, and the transmission wires are correspondingly coupled to the electrically conductive rings. The contact elements abut against the electrically conductive rings, respectively.

A pedal unit for controlling a vehicle function includes a pedal head, which receives an actuating force of a driver's foot, an outer housing which is open in the direction of the pedal head, an inner housing connected to the outer housing and which is open in the direction of the pedal head, a movable housing, and a sensor assembly. The movable housing is closed in the direction of the pedal head, arranged between the outer housing and the inner housing, mounted on the inner housing displaceably in the longitudinal extension of the inner housing with a small stroke against the force of a return spring, and is connected to the pedal head. The sensor assembly includes at least one measuring circuit having at least one sensor module arranged inside a sensor housing to detect a stroke movement of the movable housing caused by the actuating force.