摘要:
The present disclosure relates to fault management apparatus and method for an independently controlled steering system in a four wheel drive system. The apparatus includes: a steering system unit that is disposed at four wheels of a vehicle, controls steering of the wheels, and collects and transmits the state information of the wheels; and a control unit that controls the steering system unit in accordance with the state information transmitted from the steering system unit. According to the present disclosure, when there is a fault in one or more wheels of a four wheel drive vehicle, it is possible to stabilize the vehicle body by actively adjusting the steering angles of the wheels that normally work and the speed of the vehicle in accordance with the fault environment.
摘要:
A vehicle includes a powertrain having an electric machine configured to selectively apply regenerative torque to cause deceleration in response to braking demand; the powertrain further including a torque converter configured to decouple the electric machine from wheels of the vehicle. The vehicle is also provided with a controller programmed to, during a regenerative braking event, receive a signal defining a regenerative torque limit, and in response to a fault condition associated with the regenerative torque limit, generate a replacement regenerative torque limit based upon a torque converter open speed to decrease roughness during transitions into and out of regenerative braking.
摘要:
A microcomputer of a driving force distribution control device detects a maximum current value among values of an upper current acquired during a predetermined period, and determines that an overcurrent abnormality has occurred in the driving force distribution control device when the maximum current value is equal to or larger than an abnormal current threshold value and a time, for which the maximum current value is equal to or larger than the abnormal current threshold value, is equal to or larger than an abnormality detection time. Then, the microcomputer performs off control to turn off a relay, and notifies a driver of occurrence of the overcurrent abnormality using a notification unit.
摘要:
A system and method for providing fault mitigation in a vehicle system having high side drivers (HSDs) and low side drivers (LSDs) are provided. The system includes a first HSD and a plurality of first LSDs. The system also includes a selected first plurality of actuators, with each actuator connected to the first HSD and connected to a respective one of the first LSDs to operate in a first operational mode. The system further includes a second HSD and a plurality of second LSDs. The system also includes a selected second plurality of actuators, with each actuator connected to the second HSD and connected to a respective one of the second LSDs to operate in a second operational mode. When a failed component sets a fault, the corresponding HSD is turned off and the other HSD is turned on, enabling the vehicle system to operate in the non-faulted operational mode.
摘要:
A default value of transmission output speed in a motor vehicle powertrain having an automatic-shift multi-gear ratio power transmission is continuously updated based on a measured value of the output speed and other reliable speed data including transmission input speed and vehicle speed. The default value is substituted for the measured output speed when a malfunction of the output speed sensor is detected, and transitions back to the measured output speed when the output speed sensor malfunction is no longer present.
摘要:
A vehicle control device includes a controller configured to control an actuator and generate state information representing a state of the actuator, a request arbitration unit configured to arbitrate requests from a plurality of application execution units, and a request generation unit configured to generate a drive request signal to the controller. The controller includes a detection unit configured to detect whether or not the request arbitration unit is abnormal, a first transmission unit configured to transmit the state information to the request arbitration unit, and a second transmission unit configured to, when the detection unit detects that the request arbitration unit is abnormal, transmit the state information to the application execution units such that the state information does not pass through the request arbitration unit.
摘要:
A method for controlling an actuator. The method includes generating, in response to receiving a torque command signal from a first controller, an actuator control signal. The method also includes selectively controlling the actuator based on the actuator control signal. The method also includes, in response to identifying a fault associated with the first controller: generating, responsive to a determination that a partition associated with a second controller includes a fallback indicator, a fallback actuator control signal; and selectively controlling the actuator based on the fallback actuator control signal.
摘要:
A variable valve, method, and diagnostic system are provided that determine accuracy of a position of a variable valve. The variable valve, method, and diagnostic system are configured to determine a system error, the system error being the difference between a commanded position of the valve and a measured position of the valve provided through a feedback signal of the valve. The variable valve, method, and diagnostic system are further configured to determine that a diagnostic accuracy passing condition is met if: a) the system error is less than a predetermined positive error threshold and greater than a predetermined negative error threshold; b) a rate of change of the measured position exceeds a predetermined positive feedback rate threshold; or c) the rate of change of the measured position is less than a predetermined negative feedback rate threshold.
摘要:
A method and a system for controlling a driving function of a vehicle, whereby in a first operating state, the driving function is controlled by a vehicle guidance system, and in a second operating state, the driving function is controlled by a command of a driver, a transition from the first operating state to the second operating state being accomplished with the aid of an orderly handover through a preset handover procedure when it is recognized that a predetermined first condition is fulfilled, or with the aid of a handover in a fallback solution when it is recognized that a predetermined second condition is fulfilled.
摘要:
Control system and method which is adapted for use in a motor vehicle and intended to effect an at least semi-autonomous driving operation of the motor vehicle by means of assigned actuators on the basis of environmental data which are obtained from one or more environment sensors assigned to the motor vehicle, and wherein the control system is adapted and intended to detect a failure of a conventional steering system of the motor vehicle and attempt a change of direction of the vehicle, which corresponds to a desired steering angle, from current driving parameters by means of matched acceleration and/or deceleration interventions at individual wheel drives or wheel brakes, respectively, of the vehicle.