A Disturbance Rejection Approach to Actuator and Sensor Placement
نویسنده
چکیده
For various reasons as discussed for instance in [1], the selection of actuator and sensor positions is still ad hoc. This is especially true for exible structures where many candidate con gurations can exist. This study is an attempt to make the selection process more methodical. One approach to actuator and sensor placement is to optimize a closed loop performance metric directly by selecting the actuators, sensors, and controller gains simultaneously. This direct approach makes sense if the desired closed loop performance is well de ned. Since the individual actuator and sensor contributions to the closed loop performance metric is complex, the solution strategy usually employs non linear programming with many design and numerical iterations. A second approach is to select actuators and/or sensors based on open loop properties so that closed loop performance is indirectly optimized. Since the individual sensor and actuator contributions to the open loop metric is simple, nonlinear optimization is usually not needed. This approach will suggest e cient actuator and sensor con gurations for any type of control law. The method suggested in this study falls into the latter class of approaches. In this note, the use of Hankel singular value (HSV) formula as an actuator placement
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