Sensor controller
AssigneeMTS Systems Corporation
InventorsJerry R. Johnson, Jesse Russell, Glenn A. Beusch, Eckart Garneyer
Life of this patent
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Abstract
A control system for controlling a variable of a device by an end element is disclosed. The control system has as its input a magnetostrictive position sensing probe for measuring the value of the variable of the device at time intervals and a digital controller reading the value from the magnetostrictive position sensing probe and having an output and means for calculating control output from the updated value of the variable during the time interval. The digital controller is close coupled to the magnetostrictive position sensing probe to permit time intervals that are very short, such as 500 microseconds to 1 millisecond.
Claims25
A magnetostrictive sensor and control apparatus for controlling a variable of a device by an end element, comprising:
- a housing;
- a magnetostrictive position sensing probe in said housing for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals, and
- a digital controller located in said housing having an output and means for calculating control output from the updated value of the variable during said time interval.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals;
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- a hierarchical system;
- and
- said controller includes means for communicating data to and from said hierarchical system;
- wherein said means for communicating data includes means for communicating a set points for the variable;
- wherein said output is responsive to said set point and the value to adjust the end element to adjust the value of the variable.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals;
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- wherein said magnetostrictive position sensing probe is close-coupled by a coupling to said digital controller;
- wherein said coupling includes:
- an enclosure enclosing said magnetostrictive position sensing probe;
- a cap at the end of said enclosure;
- and
- said digital controller being enclosed in said cap;
- wherein said output includes an LED mounted in said cap.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals, and
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- wherein said magnetostrictive position sensing probe includes a digital output signal converter providing said updated value to said digital controller,
- wherein said digital output signal converter is an encoder.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals;
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- wherein said digital controller includes output acceleration limits.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals;
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- wherein said digital controller includes output deceleration limits.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals;
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- wherein said digital controller includes output velocity limits.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals;
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- wherein said digital controller includes output drive limits.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals;
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- wherein said digital controller includes a tester to test for proper operation of said magnetostrictive position sensing probe.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals;
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- wherein said time intervals are short time intervals.
A control system for controlling a variable of a device by an end element, comprising:
- a magnetostrictive position sensing probe for measuring the value of a variable of the device, reading the value from said magnetostrictive position sensing probe at time intervals;
- and
- a digital controller having an output and means for calculating control output from the updated value of the variable during said time interval;
- wherein said digital output signal converter is a SARA;
- wherein said digital controller includes a tester to test for proper operation of said SARA.
Dependencies are inferred from the claim text.