Multifunction Sensor Using Thin Film Transistor Transducers.
DEPARTMENT OF THE ARMY WASHINGTON DC
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A multifunction sensor provides two axes of angular rate and two axes of linear acceleration information from a single instrument. The multifunction sensor utilizes an air bearing rotor to support the spinning transducers. Angular rate measurements are made by utilizing two thin film transistors mounted on the rotor and oriented to sense strain about axes in a first plane orthogonal to the rotor spin axis. The two transducers output signals are summed to provide common mode rejection. A second set of thin film transistors are mounted on the rotor and oriented to sense strain along the axes in second plane orthogonal to the rotor spin axis and the first plane. Two axes of acceleration can be measured in the second plane by integrating this output signal at the proper time using a clock frequency. Angular rate and linear acceleration signals may be extracted from the rotating member via slip ring contacts or inductive pickoffs. Author
- Test Facilities, Equipment and Methods