A numerical control device for controlling multiple drive shafts that drive a tool for machining an object to be machined includes an analysis processing unit that analyzes a machining program, a machining path calculation unit that calculates a machining path, which is a travel path of the tool in cutting machining of the object to be machined, based on a result of analysis of the machining program performed by the analysis processing unit, and an interrupt pathway calculation unit that calculates a travel path of the tool in an interrupt operation based on the result of analysis. The interrupt operation is an operation repeatedly performed in which the tool is temporarily lifted up from the machining path while the tool is moved along the machining path and is machining the object to be machined.

Systems and methods for detecting and accommodating for loss of a torque signal of a gas turbine engine are described herein. An engine deterioration offset may be determined while the torque signal of the engine is available. Then, in the event that the torque signal is lost, a predicted operating offset may be determined. A synthesized torque signal may be generated when the torque signal is lost at least in part from the engine deterioration offset and the predicted operating offset.