14 results about "Dynamic braking" patented technology

This application discloses an automatic control method, device, equipment, and storage medium for an automotive brake disc grinding operation, relating to the technical field of automotive testing. The method includes: establishing a communication connection with a controller local area network (CLAN) bus, and acquiring vehicle status parameters and a current cycle count based on the communication connection; controlling the vehicle to perform disc grinding operations based on the vehicle status parameters and at least one of preset drive parameters, braking parameters, and cooling parameters; and controlling the vehicle to return to center steering based on a preset number of disc grinding cycles and the current cycle count, so that the vehicle completes the brake disc grinding. This application, by designing a bus-based automated control process, precisely coordinates and controls the vehicle's power, braking, and steering systems, solving the problems of low control accuracy, poor operational consistency, and unstable efficiency associated with manual disc grinding, thereby improving the control accuracy and efficiency of the disc grinding operation.

The invention relates to an electronically slip-controlled power-assisted braking system (10), in particular for a motor vehicle. Known power-assisted braking systems (10) comprise a brake request control device (A), a pressure supply device (B) for providing brake pressure in a connected brake circuit (12) with a contacted wheel brake (14), and a modulation unit (C) for modulating the brake pressure in the wheel brake (14) depending on the prevailing slip conditions at an assigned wheel. A pressure sensor (72) is provided in the brake circuit (12) to detect brake pressure provided by the pressure supply device (B). An electronic control unit (34) detects the signals from the pressure sensor (72) and evaluates them to generate a control signal for an electric motor (54) to drive a pressure generator (56) of the pressure supply device (B).According to the invention, the pressure sensor (72) can be connected alternately to the brake request preselection device (A) or to the brake pressure supply device (B) or the modulation unit (C).

The embodiment of the application provides a kind of active suspension posture control method, system and vehicle, method includes: based on the dynamics model of vehicle, according to the driving force, braking force and inertia force of vehicle at least one, determine the steady-state control force of active suspension;Identify the current working condition of vehicle, based on current working condition, determine dynamic compensation force;According to steady-state control force and dynamic compensation force, determine the target control force of active suspension.The method provided in the embodiment is based on the dynamics model of vehicle, and the posture is adjusted by feedforward control dominance, instead of the dependence of traditional feedback control on angle sensor, and a dynamic compensation strategy is designed for dynamic scene, to improve the performance of active posture control under transient state.

When the failure detection section (41) detects a specific failure and the entrapment detection section (42) detects entrapment, the transmission section (51) transmits a first signal to the information center (4). The process execution section (43) starts rescue processing when a second signal is received as a response to the first signal. The hoisting machine control section (45) causes the brake device (13) not to act in a state where dynamic braking of the motor (11) is effective during the rescue processing. When the position detection section (47) detects that the car (5) is disposed in a rescue zone during the rescue processing, the hoisting machine control section (45) causes the brake device (13) to act.

A hydraulic block of a power brake system. The hydraulic block is formed as a cuboid housing block, and forms a power cylinder bore for receiving a power cylinder. The hydraulic block has two receptacles for pedal travel simulators and is configured so as to be hydraulically connectable to a master brake cylinder, a brake fluid reservoir, and a driving dynamics control system.

This invention discloses an extrusion molding apparatus for a three-way pipe, comprising: a frame; a mold assembly including a die, a lower die, and a drive unit, wherein the upper and lower dies, when closed, enclose a shaping cavity; two extrusion assemblies, including an extrusion block and a translation unit; the extrusion block includes: an extrusion block with a notch at one end away from the corresponding translation unit; an extrusion piston sliding within the notch; and a telescopic unit driving the extrusion piston to slide; the extrusion piston, the extrusion block, and the circumferential inner wall of the round pipe enclose a sealed cooling cavity, the extrusion block containing a coolant channel, and the extrusion block being connected to an inlet pipe and a outlet pipe. In this three-way pipe extrusion molding apparatus, during the process of the extrusion block being driven by the translation unit to extrude the end of the round pipe, causing the round pipe to bulge under pressure, the telescopic unit controls the extrusion piston to move axially along the round pipe to maintain the volume of the cooling cavity. This dynamic braking compensation ensures that the internal coolant pressure tends to stabilize, improving the final molding quality of the three-way pipe.

This invention provides a Sichuan pepper cake fertilizer turning and raking device, including a gantry frame, a main shaft rotatably mounted inside the gantry frame, a material-shoveling radial flow mechanism, multiple sets of turning and raking dispersion mechanisms, a transmission frame, and a power braking mechanism. The material-shoveling radial flow mechanism includes two sets of transmission rings coaxially mounted with the main shaft and a material-shoveling flow plate positioned between the two sets of transmission rings. The multiple sets of turning and raking dispersion mechanisms are evenly distributed circumferentially along the main shaft and parallel to it, with planetary gears coaxially connected to both ends of each set of mechanisms. The transmission frame is rotatably mounted on the main shaft and rotatably connected to the planetary gears. The power braking mechanism independently controls the rotation and braking of the main shaft and the transmission frame. A sun gear is fixedly mounted on the main shaft, and transmission gear teeth are provided inside the transmission rings; the planetary gears mesh with both the sun gear and the transmission gear teeth. This invention allows for flexible switching between multiple working modes. The material-shoveling flow plate actively guides the material to the center of the turning and raking dispersion mechanism, and combined with the pulsed airflow of the hollow main shaft, significantly improves the uniformity of turning and raking and fermentation efficiency.

A method for operating a brake system, which includes a power brake and a vehicle dynamics control, after detecting that the level in a brake fluid reservoir of the brake system has fallen below a minimum fill level. The method includes detecting a brake signal, advancing a power piston to a forward position in which the required brake pressure is achieved, ascertaining the amount of travel of the power piston from the home position to the current position, holding the brake pressure and further advancing the power piston by a correction distance if the brake pressure decreases during the holding. The method also includes retracting the power piston by the ascertained amount of travel after the braking process has ended and degrading the brake system when a limit value for the forward position of the power piston has been reached.

The application provides a kind of detection method of dynamic braking force of drum, comprising: when detecting that vehicle enters drum area, drum real-time speed is collected, and non-contact optical field sensing system is started, for synchronously collecting total three-dimensional deformation time series data, temperature change time series data of drum area;Temperature change time series data and real-time speed are input into the coupling system of drum and wheel based on the finite element established in advance respectively, and the deformation time series data caused by temperature change and the deformation time series data caused by drum rotation centrifugal force are obtained;According to total three-dimensional deformation time series data of drum area, deformation time series data caused by temperature change and deformation time series data caused by drum rotation centrifugal force, deformation time series data caused only by braking force is determined;According to the deformation time series data caused only by braking force, dynamic braking force is estimated. By implementing the application, the accuracy and anti-interference ability of dynamic braking force detection can be improved.

This invention relates to the field of polymer material molding equipment and automated intelligent control technology, specifically a method and system for real-time monitoring of turntable position deviation in a multi-color injection molding machine. The method includes: acquiring turntable motion data, mold thermal data, and stress data of the mold closing mechanism; calculating the linear initial misalignment of the mold cavity edge using the motion data based on a preset error space amplification model; obtaining the true relative position before mold closing based on a preset asymmetric thermal deformation compensation model; outputting a predicted mold cavity clearance based on a preset mold closing stress and mold cavity clearance prediction model; and dynamically adjusting the operating state of the multi-color injection molding machine based on a comparison between the predicted mold cavity clearance and a preset melt overflow threshold. This invention improves the computational robustness under dynamic braking conditions.

A cylinder-block-clamping brake apparatus has both parking brake capability and limited dynamic braking capability. The brake apparatus includes a first clamp arm and an opposed second clamp arm that are disposed about a rotating cylinder block that is drivingly engaged to a motor shaft of a hydraulic or hydrostatic drive unit. A first end of each clamp arm is in contact with a brake actuation cam and a second end of each arm is configured to interface one with the other to form a floating slide-pivot joint. Each clamp arm includes at least one block contact pad formed thereon. When the cam is pivoted in either direction, block contact pads formed on the clamp arms are forced against the cylinder block to prevent rotation of the cylinder block and motor shaft.

A self-powered motor braking mechanism includes a dedicated power source sized for braking the respective motor and a dedicated braking circuitry configured to provide hybrid braking of the motor to a targeted stop. The motor braking circuitry is configured, in the event of a loss of primary power driving the motor, to provide a combination of two or more of dynamic braking, active braking and active position control to achieve zero speed of the motor by a target stopping time.

This invention discloses a dual-pressure braking control device and a wet brake, comprising a first brake hub and a second brake hub coaxially distributed, and further comprising a drive assembly, a pressure plate, a first brake pad, a pressure bearing member, a second brake pad, and a gasket sequentially distributed along the axial direction of the first brake hub. An elastic reset assembly is provided between the pressure plate and the gasket, and a support spring is provided between the pressure bearing member and the gasket. It also includes a drive shaft, with the first brake hub fixedly mounted on the drive shaft and the second brake hub sleeved on the drive shaft; and a planetary reduction mechanism, including a planetary ring gear connected to the differential zero shaft, with the second brake hub connected to the planetary ring gear. This invention improves the braking control characteristics of the wet brake of the electric drive axle, controlling the braking torque and timing of power braking and differential braking, thereby improving braking characteristics and enhancing vehicle driving safety.