An improved electro-hydraulic modulating valve pedal assembly is adapted to control the flow of hydraulic fluid manually through actuation of a pedal, electrically through activation of a solenoid, or in combination through actuation of a pedal and activation of a solenoid. In one embodiment, the pedal assembly includes a pedal that is pivotably mounted to a base, a push rod that is operatively coupled to the pedal, a spool valve that is configured to vary the hydraulic output in response to the position of the push rod, and a solenoid that is magnetically coupled to the push rod. The pedal assembly is well suited for electronic-hydraulic braking control systems, including brake electronic control units for anti-lock braking, emergency braking, and autonomous operation.

A motor vehicle includes at least one hydraulically actuatable wheel braking device and at least one electric drive motor. A method for operating the vehicle includes monitoring a driver behavior upon an emergency braking operation, and activating the hydraulic wheel braking device for generating a hydraulic emergency braking torque when an emergency braking operation is detected. When the emergency braking torque is detected, the drive motor is also operated as a generator in order to generate an additional electrical emergency braking torque.

A motor vehicle includes at least one hydraulically actuatable wheel braking device and at least one electric drive motor. A method for operating the vehicle includes monitoring a driver behavior upon an emergency braking operation, and activating the hydraulic wheel braking device for generating a hydraulic emergency braking torque when an emergency braking operation is detected. When the emergency braking torque is detected, the drive motor is also operated as a generator in order to generate an additional electrical emergency braking torque.

A braking system including a brake actuator, a control valve, a control assembly, and at least one pressure sensor. The control valve is disposed to direct hydraulic fluid to the brake actuator at a rate corresponding to a magnitude of a control signal. The control assembly includes a mixed-mode control system. The at least one pressure sensor is configured to measure a pressure of the hydraulic fluid to the brake actuator. The control assembly is configured to determine a position of the brake actuator. The mixed-mode control system is configured to determine a position command and a pressure command. The mixed-mode control system is configured to adjust the magnitude of the control signal based on at least one of the position command and the pressure command so as to reposition the brake actuator from a first position to a second position.

A braking system including a brake actuator, a control valve, a control assembly, and at least one pressure sensor. The control valve is disposed to direct hydraulic fluid to the brake actuator at a rate corresponding to a magnitude of a control signal. The control assembly includes a mixed-mode control system. The at least one pressure sensor is configured to measure a pressure of the hydraulic fluid to the brake actuator. The control assembly is configured to determine a position of the brake actuator. The mixed-mode control system is configured to determine a position command and a pressure command. The mixed-mode control system is configured to adjust the magnitude of the control signal based on at least one of the position command and the pressure command so as to reposition the brake actuator from a first position to a second position.

A braking system including a brake actuator, a control valve, a control assembly, and at least one pressure sensor. The control valve is disposed to direct hydraulic fluid to the brake actuator at a rate corresponding to a magnitude of a control signal. The control assembly includes a mixed-mode control system. The at least one pressure sensor is configured to measure a pressure of the hydraulic fluid to the brake actuator. The control assembly is configured to determine a position of the brake actuator. The mixed-mode control system is configured to determine a position command and a pressure command. The mixed-mode control system is configured to adjust the magnitude of the control signal based on at least one of the position command and the pressure command so as to reposition the brake actuator from a first position to a second position.

A braking system including a brake actuator, a control valve, a control assembly, and at least one pressure sensor. The control valve is disposed to direct hydraulic fluid to the brake actuator at a rate corresponding to a magnitude of a control signal. The control assembly includes a mixed-mode control system. The at least one pressure sensor is configured to measure a pressure of the hydraulic fluid to the brake actuator. The control assembly is configured to determine a position of the brake actuator. The mixed-mode control system is configured to determine a position command and a pressure command. The mixed-mode control system is configured to adjust the magnitude of the control signal based on at least one of the position command and the pressure command so as to reposition the brake actuator from a first position to a second position.

A braking system includes a brake actuator, a control valve, a control assembly, at least one pressure sensor, and at least one flow sensor. The control valve is disposed to direct hydraulic fluid to the brake actuator at a rate corresponding to a magnitude of a control signal. The at least one flow sensor and the at least one pressure sensor, in communication with the control assembly, are disposed between the control valve and the brake actuator and configured to measure a respective flow rate and pressure of the hydraulic fluid to the brake actuator. The control assembly is configured to ramp the control signal from a first signal level to a second signal level at a predetermined rate of change. The control assembly is configured to determine a flow-based position of the brake actuator based on the flow rate.

A braking system includes a brake actuator, a control valve, a control assembly, at least one pressure sensor, and at least one flow sensor. The control valve is disposed to direct hydraulic fluid to the brake actuator at a rate corresponding to a magnitude of a control signal. The at least one flow sensor and the at least one pressure sensor, in communication with the control assembly, are disposed between the control valve and the brake actuator and configured to measure a respective flow rate and pressure of the hydraulic fluid to the brake actuator. The control assembly is configured to ramp the control signal from a first signal level to a second signal level at a predetermined rate of change. The control assembly is configured to determine a flow-based position of the brake actuator based on the flow rate.

A brake valve for a compressed air brake system of a utility vehicle includes a compressed air input configured to connect to a system pressure, a compressed air output configured to connect a brake control line, and at least one sensor configured to determine a brake valve actuation travel of an actuating element of the brake valve with a working interconnection to the brake pedal. The brake valve further includes a characteristic curve memory storing two stored characteristic curves and/or dependences and at least one determination device. The brake valve is configured to output at least two useful sensor signals, a first of which represents a brake valve output pressure and a second of which represents a percentage actuation position of the actuating element. The at least one sensor is configured to generate an actuating signal depending on the brake valve actuation travel of the actuating element.