Abstract: Provided is a method for providing a service in an edge network system including a plurality of access points including steps of transmitting, by a terminal, a service request message including a name of a service to be provided to a first access point, transmitting, by the first access point, a service request response message including an estimated service execution time and data for authentication to the terminal, performing authentication between the terminal and the first access point based on the data for authentication for the estimated service execution time, and providing, by the first access point, a content corresponding to the service request message to the terminal, when the authentication between the terminal and the first access point is successful.

Abstract: An attitude control system uses a first order partial derivative of an error signal, representing a difference between a commanded pitch attitude and a sensed, actual pitch attitude. The first order partial derivative forms a cross product with the Earth's magnetic field to provide a X axis torque rod dipole command, which powers the torque rod in a way that causes a satellite to move toward its commanded attitude.

Abstract: A vehicle traction controller includes engine control and brake control routines to improve vehicle traction. The engine control routine reduces average slip of driven wheels of the vehicle by retarding spark timing and by reducing air flow into the engine via an electronically controlled throttle. The engine control routine is entered if the average wheel speed of the driven wheels is above a predetermined threshold speed. Control of spark timing is performed by a Proportional-Differential (PD) control technique. The electronically controlled throttle is controlled by a Proportional-Integral-Differential (PID) control technique. The brake control routine operates to reduce the rotational speed of the driven wheel which has the highest rotational speed. The brake control routine is entered if one of the driven wheels has a rotational speed which is greater than a maximum desired speed and if the difference in speed between the driven wheels is greater than a maximum difference value.