摘要:
Excursion prevention methods and systems may include transmitting a speed signal from the vehicle speed sensor to the electronic control unit; transmitting a transmission signal from the transmission sensor to the electronic control unit; transmitting an accelerator pedal signal from the accelerator sensor to the electronic control unit; transmitting a brake pedal signal from the brake sensor to the electronic control unit; executing a machine readable control logic with the electronic control unit to determine if an excursion condition is present based on the speed of the vehicle, the status of the transmission, the application of the accelerator pedal of the vehicle, and the application of the brake pedal of the vehicle; and, transmitting an alert signal from the electronic control unit when the excursion condition is present.
摘要:
A method and apparatus are provided to control operation of an electro-mechanical torque transmission device selectively operative in one of a plurality of fixed gear modes and two continuously variable modes, and operative to transmit torque input from a plurality of torque-generative devices. The transmission device includes a hydraulic circuit and is operative in one of a plurality of operating modes by selective actuation of a plurality of hydraulically-actuated torque-transfer clutches. The method comprises monitoring pressures in the hydraulic circuit, and restricting operation of the transmission when any one of the monitored hydraulic pressures does not correspond to an expected pressure thereat. Presence of a fault is verified during the restricted operation.
摘要:
Disclosed herein are systems and methods of controlling the pressure in a modulation pressure circuit through transmission fluid through an orificed check valve supplementary or in substitution of a computer-controlled pressure regulation solenoid. Detailed information on various example embodiments of the inventions are provided in the Detailed Description below, and the inventions are defined by the appended claims.
摘要:
A shifting mechanism includes a limit switch that sends an open-close signal of the switch contacts SW1, SW2, SW3 and SW4 out to a control mechanism according to a 2H-4H-N-4L shifting sequence. The switch contacts SW1 and SW2 detect the position of a slider 4H which is moved by a thrust actuator, during shifting in the range of 4H engagement to the range of N engagement. Therefore, if one of the switch contacts SW1 and SW2 is faulty, the other switch detects shifting between 4H and N. This prevents shifting into N over 4H, thereby preventing malfunction of the thrust actuator resulting from a faulty switch contact SW1 or SW2. This also avoids potential difficulties in vehicle control due to shifting characteristics and permits the maintaining of controlled driving.
摘要:
A method and an apparatus control a car equipped with an automatic transmission having a lockup clutch. When the lockup clutch is in the lockup state, a variation of a generated torque is detected. When the range of the torque variation detected exceeds a predetermined value, an engine torque is reduced by controlling the engine, and the automatic transmission is controlled to compensate for a reduction of the driving torque due to a reduction of the engine torque. Thus, the speed change ratio is changed to the low gear side. The control unit includes a unit for controlling an output torque of an engine according to a command value, a unit for changing the transmission ratio of the automatic transmission, a unit for detecting a variation of the engine torque, a unit for deciding a target driving torque, a unit for reducing a torque command value when the range of a detected variation of the torque has exceeded a predetermined value when the lockup clutch was in the lockup state, and a unit for deciding a transmission ratio at which the reduction of the driving torque due to the reduction of the engine torque is compensated for.
摘要:
The present invention relates to a method and an apparatus for controlling a car equipped with an automatic transmission having a lockup clutch. According to the control method of the present invention, when the lockup clutch is in the lockup state, a variation of a generated torque is detected. When the range of the torque variation detected exceeds a predetermined value, an engine torque is reduced by controlling the engine, and the automatic transmission is controlled to compensate for a reduction of the driving torque due to a reduction of the engine torque. Thus, the speed change ratio is changed to the low gear side. The control unit of the present invention includes a unit for controlling an output torque of an engine according to a command value, a unit for changing the transmission ratio of the automatic transmission, a unit for detecting a variation of the engine torque, a unit for deciding a target driving torque, a unit for reducing a torque command value when the range of a detected variation of the torque has exceeded a predetermined value when the lockup clutch was in the lockup state, and a unit for deciding a transmission ratio at which the reduction of the driving torque due to the reduction of the engine torque is compensated for.
摘要:
A method of shifting in a manual mode of an electronically-controlled automatic transmission system includes the steps of determining whether a shift lever of a shift lever mechanism is presenting a position error when the shift lever is in a manual position, determining whether at least one switch on the shift lever mechanism is presenting an error if a shift lever position error is not determined, determining whether a temperature of an automatic transmission or engine coolant temperature exceeds a predetermined threshold if the at least one switch is not presenting an error, determining whether the manual position conditions have been met, determining whether an upshift or downshift of the automatic transmission is scheduled if the manual position conditions have been met, and executing either an upshift or a downshift of the automatic transmission based on the determined upshift or downshift being scheduled.
摘要:
A system for robust fault detection in an electrically variable, hydraulically controlled transmission includes independently monitoring hydraulic pressure within a hydraulic control circuit and electric machine rotation for detecting clutch state faults.
摘要:
Excursion prevention methods and systems may include transmitting a speed signal from the vehicle speed sensor to the electronic control unit; transmitting a transmission signal from the transmission sensor to the electronic control unit; transmitting an accelerator pedal signal from the accelerator sensor to the electronic control unit; transmitting a brake pedal signal from the brake sensor to the electronic control unit; executing a machine readable control logic with the electronic control unit to determine if an excursion condition is present based on the speed of the vehicle, the status of the transmission, the application of the accelerator pedal of the vehicle, and the application of the brake pedal of the vehicle; and, transmitting an alert signal from the electronic control unit when the excursion condition is present.
摘要:
A method of detecting object scratching during robotic arm movement of the object. The method includes providing a robotic arm for grasping and placing of an object into a cassette and providing a cassette having an entrance for receiving an object therein. A vibration sensor is placed on at least one of the robotic arm or under the cassette control of the robotic arm is provided in response to a malfunction indication at least one of the vibration sensors. There can further be provided an air flow across the entrance of the cassette with placement of a particle counter at the downstream end of the air flow across cassette entrance, wherein the control of said robotic arm is provided in response to a malfunction indication at least one of the vibration sensors and the particle counter. The control can also be provided in response to both of the vibration sensors or one or both of the vibration sensors and the particle counter. The control can be one or more of making a record of the malfunction, providing an alarm signal or terminating operation of the arm. The object is preferably some form of disc or disc-shaped object.