|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||91/365 ; 91/387 ; 137/84|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 13 인용 특허 : 0|
A positioner-actuator control system includes a pair of relays and a pivotally mounted beam for operation thereof in response to a pneumatic control signal. A summing beam has forces applied to it from an input signal, a controlled device position lever, a zero adjustment and a damping mechanism comprising a pair of flat springs attached to the relay beam and to the summing beam. A clamp is movable along the flat springs to permit user adjustment of the damping force.
A positioner system for controlling the position of a controlled device in accordance with an input signal comprising: output means for controlling the position of said controlled device; summing means for integrating said input signal with a signal representative of the position of said controlled device and for producing a command signal for said output means; adjustable damping means including user-adjustable variable rate spring means for tailoring the dynamic overshoot characteristic of said system to accommodate a wide range of controlled devices; ...