摘要:
A method and apparatus is provided for improving integrity in data representing a plurality of condition states of a variable, comprising the steps of determining which condition states are operationally incompatible with one another, and generating an array of transformed integer values comprising a separate integer value for each condition state. The transformed integer value for each condition state in binary form is at least two bit errors removed from any transformed integer value for an identified incompatible condition state in binary form.
摘要:
A method and apparatus is provided for improving integrity in data representing a plurality of condition states of a variable, including the steps of determining which condition states are operationally incompatible with one another, and generating an array of transformed integer values including a separate integer value for each condition state. The transformed integer value for each condition state in binary form is at least two bit errors removed from any transformed integer value for an identified incompatible condition state in binary form.
摘要:
An exemplary transmission system includes a plurality of sensors each configured to output a signal at least partially representative of a speed of at least one of a first transmission input shaft, a second transmission input shaft, a transmission output shaft, and an engine. A transmission control module is in communication with the plurality of sensors and is configured to identify at least one of the plurality of sensors as a failed sensor and another of the plurality of sensors as a working sensor. The transmission control module is further configured to estimate the signal of the failed sensor based on a predetermined relationship between an expected signal from the failed sensor and the signal received from the working sensor.
摘要:
A throttle control system is presented. A throttle has a throttle actuator coupled to a throttle plate. A control module is coupled to the throttle actuator. The control module sends a first signal within a gear change time period to the throttle actuator to position the throttle plate for an increased throttle opening. The control module terminates the first signal after the gear change time period. The control module sends a second signal to the throttle actuator to position the throttle plate. The control module positions the throttle plate by the throttle actuator to attain a lower throttle opening limit. A downshift from a higher gear to a lower gear occurs.
摘要:
An engine control system and method monitors torque increase during cylinder deactivation for a displacement on demand engine. A timer is started at cylinder deactivation. A controller adjusts throttle position and determines whether cylinder deactivation completes within a predetermined time. The controller adjusts throttle position based on the status of an enable condition. The controller determines if engine speed and vehicle acceleration are each within a threshold. The controller operates the throttle in a preload operating mode if the enable condition is met and operates the throttle in a normal operating mode if the enable condition is not met.
摘要:
A method for securing vehicle data that includes a plurality of data messages includes the steps of determining a sequence for the plurality of data messages, selecting a plurality of identifier values for the plurality of data messages such that each of the plurality of identifier values are at least two bit errors removed from another, and assigning one of the plurality of identifier values to each of the plurality of data messages, based at least in part on the sequence.
摘要:
First and second reference voltages are applied to first and second terminals of a processor via voltage divider circuits. First and second signal conditioning circuits are coupled to third and fourth terminals of the processor, respectively, and voltage or current sensors are coupled to the first and second signal conditioning circuits. The processor measures the electrical characteristics at the third and fourth terminals and computes first and second ratiometric values of the electrical characteristics, wherein the first ratiometric value is based upon a measurement obtained from the third terminal and the first reference voltage and the second ratiometric value is based upon a measurement of obtained from the fourth terminal and the second reference voltage. The processor further identifies an issue if a ratio of the first ratiometric value to the second ratiometric value exceeds a ratio of the first reference value to the second reference value.
摘要:
A method of providing secure data from vehicle operational variable data that includes a plurality of data message bits includes the steps of dividing the plurality of data message bits into a first group of data message bits and a second group of data message bits, encoding the first group of data message bits using a data map to generate a plurality of encoded data message bits, and generating the data message from the plurality of encoded data message bits and the second group of data message bits.
摘要:
A number N of position sensors, each associated with one of N shift rails in a shift rail transmission system, wherein the set of N sensors is divided into subsets and each subset is provided a common reference from a control module; and a processing component that determines from data from each sensor whether the shift rail associated with that sensor is in a position of engagement of a first gear, a position of engagement of a second gear, or in a neutral position.Further, providing a first common reference to a first set of shift rail position sensors; providing a second common reference to a second set of shift rail position sensors; receiving sensor data from each position sensor; determining that the data from the first set of position sensors is unreliable; and operating a transmission using only the gears related to the position sensors in the second set.
摘要:
A processing component configured to receive position sensor data from a first sensor attached to a shift rail of a transmission and determine from the first sensor data whether the shift rail is in a position of engagement of a first gear or a second gear or in a neutral position; receive position sensor data from a second sensor attached to the shift rail, determine from the second sensor data whether the shift rail is in a position of engagement of the first gear or the second gear or in the neutral position; compare the position determined from the first sensor data with the position determined from the second sensor data, and verify the shift rail position based on the comparison.Further, a method for verifying shift rail position based on comparing data received from a first and a second sensor attached to the shift rail.