Abstract: The present invention provides a closed-loop control method for an electronic fuel injection piston-engine on an unmanned aircraft consisting of the following steps: determination of a set of control coefficients; preliminary determination of fuel injection flow; determination of the injection limit; determination of the actual injectable value; perform fuel injection; the opening of the air intake valve is controlled to ensure that the fuel-air ratio always remains within a specified range. The present invention also provides a method for modeling the operation of an engine at each operating range. In addition, the method of physically simulating the operating conditions according to the pressure ranges of the engine is also proposed. The simulation method to find the control coefficients corresponding to each operating model of the engine is presented, the fuel injection closed-loop control structure is built on a control simulation software.

Abstract: Provided is a manpower management system comprising a data communication unit configured to receive motion signals from a wearable unit worn by a specific employee to sense motions of the specific employee; a data processing unit configured to label the motion signals with behavior data to generate a labeled training dataset for the specific employee; a deep learning model for the specific employee configured to be trained through machine learning using the labeled training dataset, a recognition unit configured to recognize behavior of the specific employee in response to an input of a motion signal of the specific employee received by the data communication unit, using the trained deep learning model, and output a behavior data of the specific employee; and a simulation unit configured to evaluate employee's work efficiency using the output behavior data.