The present disclosure is directed to an agricultural work vehicle including: a vehicle body configured to support an engine; a transmission configured to perform shifting on drive generated by the engine; a braking unit implemented as a hydraulic brake or a mechanical brake, and configured to reduce the travelling speed of the vehicle body and control the deceleration of each of left and right wheels; an operation unit provided in the vehicle body; and a control unit configured to control the transmission and the braking unit; wherein the control unit includes a conjunctive operation module configured to control the braking unit and the forward-reverse clutch so that both the braking rate at which the braking unit reduces the travelling speed of the vehicle body and the drive transmission rate at which the forward-reverse clutch transmits drive are adjusted.

Methods and systems for estimating autonomous brake wear in a vehicle. A brake table includes a correspondence between a desired brake request and an applied brake force. Vehicle deceleration data is generated during several braking events of the vehicle. The vehicle deceleration data includes (i) desired brake requests issued during the braking events, and (ii) vehicle speeds during the brake request. A learning model is executed on the deceleration data. The learning model is configured to estimate a brake wear based on changes in differences between (a) the desired brake requests issued during the braking events and (b) the vehicle speeds during the brake requests. Based on the estimated brake wear, the brake table is modified in order to yield a modified brake table. A new desired brake request is generated using the modified brake table.

An electronic brake for a vehicle and a control method therefor according to an embodiment of the present disclosure are able to generate a braking force required to safely run the vehicle even if something is wrong with a main brake device, by controlling an auxiliary brake device, which generates a required braking force by serving as a backup for the main brake device.

The present disclosure relates to an electronic brake system including a reservoir in which the pressurized medium is stored, a hydraulic pressure supply device provided to generate a hydraulic pressure by moving a hydraulic piston forward or backward and having a first pressure chamber provided on a front side of the hydraulic piston and a second pressure chamber provided on a rear side of the hydraulic piston, a hydraulic control unit provided to control a flow of the hydraulic pressure to be transmitted from the hydraulic pressure supply device to a wheel cylinder, a longitudinal acceleration sensor provided to detect a longitudinal acceleration of a vehicle, and a controller provided to control the hydraulic pressure supply device and the hydraulic control unit, wherein the controller determines the hydraulic pressure generated by the hydraulic pressure supply device based on the longitudinal acceleration of the vehicle, determines a braking mode based on the determined hydraulic pressure, and performs the determined braking mode.

A dual-control electro-pneumatic foot brake system and method are provided for use with a vehicle having multiple foot brake modules that communicate electronic signals to an electronic brake controller. As a backup feature in case there is a problem with the electron braking system, one of the foot brake modules provides pneumatic pressure to the other foot brake module, which supplies the provided pneumatic pressure to various components of the vehicle's braking system. Other alternatives are provided.

A vehicle includes a computer including a processor and a memory storing instructions executable by the processor to identify a vehicle being in an autonomous drive mode. The computer includes instructions to detect a user request to change the drive mode from the autonomous drive mode to a manual drive mode. The computer includes instructions to move the brake pedal from the stowed position to the deployed position in response to the user request to change the drive mode. The computer includes instructions to prompt a user to validate the brake pedal being in the deployed position. The computer includes instructions to change from the autonomous drive mode to the manual drive mode in response to the user validating deployment of the brake pedal.

An aircraft braking system is disclosed that includes a first pedal, first and second pedal sensors for the first pedal, a first brake control unit (e.g., primary), and a separate second brake control unit (e.g., secondary). The first pedal position sensor is operatively interconnected with one of the first brake control unit and the second brake control unit, while the second pedal position sensor is operatively interconnected with the other of the first brake control unit and the second brake control unit. Outputs from these pedal sensors may be used to control operation of the aircraft braking system in at least some fashion.

A power transmission unit of a single-acting plunger type includes a ball screw, a ball nut driven by the ball screw, and a plunger piston coupled to the ball nut. A block housing at least partially encloses the plunger piston and the ball screw. A plunger chamber is at least partially defined by the block housing and a face of the plunger piston. The plunger chamber is selectively pressurized by reciprocal motion of the plunger piston with respect to the block housing driven by longitudinal motion of the ball nut. An electric motor selectively drives the ball screw to responsively reciprocate the plunger piston within the plunger chamber. A motor housing at least partially encloses the ball nut, the electric motor, and the plunger piston. The motor housing includes a block lip which is crimped to the block housing to maintain the motor housing in relation to the block housing.

A brake system may include an actuation device that may actuate a first piston-cylinder unit to apply pressure medium to at least one brake circuit via a valve device, where a piston of the first piston-cylinder unit separate first and second working chambers; a second piston-cylinder unit, having an electromotive drive and a transmission to feed pressure medium to at least one of the brake circuits via a valve device; and a motor-pump unit having a valve device to feed pressure medium to the brake circuits. The motor of the electromotive drive of the second piston-cylinder unit and the motor of the motor-pump unit may be used jointly or independently of one another, under control of a control device. The motor-pump unit is connected via two hydraulic connections, one or both of which may incorporate separating valves, to the first and second working chambers of the first piston-cylinder unit.

A method for setting a heavy duty vehicle in motion. The method includes obtaining a motion instruction for setting the vehicle in motion, determining a target wheel slip value corresponding to a wheel slip suitable for executing to the motion instruction, and controlling wheel speed to maintain wheel slip of the vehicle at the target wheel slip value.