Accession Number : ADD005233

Title :   Surface Profile Follower and Indicator System.

Descriptive Note : Patent Application,


Personal Author(s) : McKechnie,John C ; Grimmer,Paul D

Report Date : 29 Jun 1978

Pagination or Media Count : 24

Abstract : A surface profile follower and indicator system is disclosed which pneumatically senses and follows the gradients occurring in the surface of a modelboard by means of a pneumatic probe and negative feedback control sub-system which maintains said pneumatic probe at a predetermined distance from the modelboard surface being sensed at any given instant, as the entire profile follower system is moved in such manner as to effect a desired traverse thereof by any suitable carrier vehicle. A probe position pick-off is effectively connected to the aforesaid negative feedback control subsystem and supplies an analog signal to an appropriate readout which, in turn, indicates the position of said pneumatic probe with respect to a predetermined datum, thereby effectively indicating the surface irregularities of the aforesaid modelboard. (Author)

Descriptors :   *Patent applications, *Stereoscopic map plotters, *Pneumatic servomechanisms, Indicating instruments, Control systems, Feedback, Probes, Circuit analysis

Subject Categories : Cartography and Aerial Photography
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE