摘要:
A control system includes a jerk determination module and a misfire confirmation module. The jerk determination module determines a jerk of a crankshaft associated with a firing event in an engine. The misfire confirmation module selectively confirms that a misfire detected in the engine is valid based on the jerk.
摘要:
A control system includes a jerk determination module and a misfire confirmation module. The jerk determination module determines a jerk of a crankshaft associated with a firing event in an engine. The misfire confirmation module selectively confirms that a misfire detected in the engine is valid based on the jerk.
摘要:
A rough road detection system for an engine having a crankshaft includes a control module and a comparison module. The control module receives a crankshaft speed signal and determines a crankshaft rotation time and a crankshaft acceleration and jerk. The crankshaft rotation time is based on said crankshaft speed signal. The crankshaft acceleration and jerk are based on said crankshaft rotation time. The control module detects a crankshaft disturbance based on said crankshaft acceleration and jerk and counts a number of crankshaft disturbances. The comparison module determines a dispersion value and asymmetry value based on the crankshaft disturbances and determined whether rough road conditions exist based on first and second comparisons. The first comparison is between the dispersion value and a first predetermined threshold. The second comparison is between the asymmetry value and a second predetermined threshold.
摘要:
An engine misfire system comprises a rough road detection module and a misfire detection module. The rough road detection module selectively generates a rough road indicator based upon a transmission output speed of a vehicle. The misfire detection module selectively diagnoses engine misfire and selectively generates a misfire indicator based on diagnosed engine misfire and the rough road indicator.
摘要:
An engine misfire system comprises a rough road detection module and a misfire detection module. The rough road detection module selectively generates a rough road indicator based upon a transmission output speed of a vehicle. The misfire detection module selectively diagnoses engine misfire and selectively generates a misfire indicator based on diagnosed engine misfire and the rough road indicator.
摘要:
A rough road detection system includes a collection module, a statistical module, and a comparison module. The collection module collects samples from a vibration sensitive signal. The statistical module removes a periodic anomaly from the samples and removes a random anomaly from the samples with a filter having a filter coefficient based on an engine speed signal. In addition, the statistical module calculates a statistical signal based on the samples. The rough road detection system also includes a derivative module that calculates a first and second derivative based on a rate or time. The derivative module removes negative derivatives when the derivatives are calculated with respect to the rate and positive derivatives when the derivatives are calculated with respect to time. The comparison module determines whether a rough road condition exists based on the statistical signal or the first and second derivatives.
摘要:
A method for detecting a clear path of travel for a vehicle including fusion of clear path detection by image analysis and road geometry data describing road geometry includes monitoring an image from a camera device on the vehicle, analyzing the image through clear path detection analysis to determine a clear path of travel within the image, monitoring the road geometry data, analyzing the road geometry data to determine an impact of the data to the clear path, modifying the clear path based upon the analysis of the road geometry data, and utilizing the clear path in navigation of the vehicle.
摘要:
A method for detecting a clear path of travel for a vehicle utilizing analysis of a plurality of images generated by a camera device located upon the vehicle includes monitoring the images wherein each image comprises a plurality of pixels, identifying a set of interest points from the plurality of pixels in a current image, finding their corresponding points in a preceding image through correspondence matching, filtering the matched pairs of interest points to select a preferential set of matched pairs, generating a three dimensional map of features in the view based upon the preferential set of matched pairs, determining the clear path based upon the mapped features, and utilizing the clear path to operate the vehicle.
摘要:
A method for detecting a clear path of travel for a vehicle wherein the detecting includes a fusion of a plurality of analyses including monitoring an image from a camera device includes analyzing the image through clear path detection analysis to determine a clear path of travel within the image, analyzing an area in front of the vehicle utilizing a topographical variation analysis to determine a flat surface upon which the vehicle can travel, combining the clear path of travel and the determined flat surface to describe an enhanced clear path of travel, and utilizing the enhanced clear path of travel to navigate the vehicle.
摘要:
An apparatus for generating autonomic control mode commands to an autonomic control system in a vehicle to execute an autonomic vehicle maneuver in response to an operator command includes a control module signally connected to the autonomic control system and an input device. The input device is manipulated by an operator to transition among operator command positions and configured to generate signal outputs monitored by the control module indicating the operator command positions including a neutral position, a detent position and an extended detent position. The input device further includes a reset state corresponding to the neutral position and monitored by the control module, an initiation state corresponding to the extended detent position and monitored by the control module, and a command state corresponding to the detent position and monitored by the control module.