Modern Control System Theory and Design, 2nd Edition

3.4.  TRANSFER-FUNCTION AND STATE-VARIABLE REPRESENTATION OF TYPICAL ELECTROMECHANICAL CONTROL-SYSTEM DEVICES

This section illustrates the procedure used for deriving the transfer function and state-variable representation for commonly used devices from their basic differential equations. Examples of control systems which use electromechanical components are in robots, positioning systems such as tracking radars, guidance control systems, printer controls for computer tape and disk drive systems, and ship and aircraft control systems. An illustration of a control system which uses electromechanical components is illustrated in Figure 3.8 which represents the Operational Flight Trainer to simulate the operation of the MV-22A tilt-rotor, twin engine, vertical short takeoff and landing aircraft.

Figure 3.8  The Hughes Operational Flight Trainer simulates the MV-22A tilt-rotor. twin engine, vertical short takeoff and landing aircraft designed for assault support, troop lilt, medical evacuation, and combat search and rescue. This simulator provides training for normal and emergency procedures, visual and instrument flight, and aerial refueling. Software-controlled hydraulic actuators provide six-degree-of-freedom motion to simulate rotary wings, fixed wings, and transition motion. A seat vibrator system simulates aerodynamic and proprotor vibration. (Courtesy of Hughes Training, Inc./Arlington, ...