Loading patent…
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsKenji Torii, Mitsuhito Yamazaki, Hidetaka Ozawa, Masaki Ueyama
Estimating the term…
A fault diagnosis method and apparatus for a control system that includes a plurality of actuators and a plurality of sensors for controlling the operation of the actuators in accordance with the output signals of the sensors, wherein even in the case where a fault occurs in any of the actuators or any of the sensors constituting the nucleus of the system, the faulty point can be easily and inexpensively identified. In the fault diagnosis, the transmission characteristics between the individual actuators and the individual sensors are measured. On the basis of the measurements, a fault is decided on for all the transmission paths between the individual actuators and the individual sensors, thereby estimating a faulty point from the pattern of the fault decision of the transmission paths.
A fault diagnosis method for a control system having a plurality of actuators and a plurality of sensors in which an operation of the plurality of the actuators is controlled in accordance with output signals of the sensors, comprising the steps of, measuring a transmission characteristic in each transmission path between each of the plurality of actuators and each of the plurality of the sensors, deciding a fault for each of the transmission paths between each of the actuators and each of the sensors, and estimating a faulty point from a pattern of the results of fault decisions on the transmission paths.
A fault diagnosis apparatus for a control system having a plurality of actuators and a plurality of sensors in which an operation of the plurality of the actuators is controlled in accordance with output signals of the sensors, comprising, measurement means for measuring a transmission characteristic in each transmission path between each of the actuators and each of the sensors, and estimation means for deciding on a fault for each of the transmission paths between each of the actuators and each of the sensors based on the measurements of the transmission characteristics and estimating a faulty point from a pattern of the results of fault decisions on the transmission paths.
Dependencies are inferred from the claim text.