Abstract: Disclosed is a thermal-based automatic roller tracking and mapping system for roller path tracking and mapping in pavement compaction. Accuracy in estimation during roller position tracking and mapping for pavement compaction through the use of thermal imaging is achieved. The tracking and mapping system utilizes an infrared camera for automatic roller path tracking and mapping in pavement construction. The tracking and mapping data associated with the movement of the roller vehicle during compaction of the surface can be generated and visually represented in a user interface accessible to the operator of the roller vehicle. Based on the tracking and mapping data that is generated in real-time and presented to the operator in the user interface, the operator can make adjustments to the roller vehicle and path, as necessary.

Abstract: The present disclosure provides a successive gas path fault diagnosis method with high precision for gas turbine engines and falls within the technical field of fault diagnosis for gas turbine engines, including the following steps: establishing an engine nonlinear component-level model; capturing dynamic effects of an engine transient maneuver; outputting an estimated value of an engine observation parameter by the engine nonlinear component-level model; acquiring a measurement of the engine observation parameter through sensors; and iteratively updating a degradation factor through a solver. The present disclosure captures the dynamic effects of the transient maneuver at consecutive moments through time-series gas path measurement parameters, thereby realizing successive and high-precision diagnosis for health conditions of the gas turbine engines. This technology can provide a new successive and high-precision diagnosis method for the gas turbine engines under steady-state and transient conditions.

Abstract: Disclosed is a thermal-based automatic roller tracking and mapping system for roller path tracking and mapping in pavement compaction. Accuracy in estimation during roller position tracking and mapping for pavement compaction through the use of thermal imaging is achieved. The tracking and mapping system utilizes an infrared camera for automatic roller path tracking and mapping in pavement construction. The tracking and mapping data associated with the movement of the roller vehicle during compaction of the surface can be generated and visually represented in a user interface accessible to the operator of the roller vehicle. Based on the tracking and mapping data that is generated in real-time and presented to the operator in the user interface, the operator can make adjustments to the roller vehicle and path, as necessary.