Sensor hysteresis reduction
First Claim
1. A method of reducing hysteresis in a sensor device, said method comprising the steps of:
- (a) receiving an input signal from the sensing device;
(b) determining boundary values about the input signal;
(c) determining a correction signal based on the boundary values and the input signal;
(d) combining the correction signal with the input signal yielding a composite signal, wherein the composite signal is indicative of a signal of the sensor device substantially without hysteresis; and
(e) outputting the composite signal for use by a system.
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Abstract
A method and circuit includes a means for reducing hysteresis in a system. The method includes the definition of boundary conditions relative to an incoming signal. The boundary conditions and the incoming signal are then utilized to determine a proper correction value. The hysteresis correction value is tailored to changes in the input signals. The modification occurs because the boundary conditions are changed depending on the input signal such that the correction values are constantly and continuously varied and implemented to accommodate changes in the input value. The constant accommodation and changing of the correction value provides a simple and effective hysteretic error accommodation that yields a substantially free hysteresis signal.
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Citations
14 Claims
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1. A method of reducing hysteresis in a sensor device, said method comprising the steps of:
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(a) receiving an input signal from the sensing device; (b) determining boundary values about the input signal; (c) determining a correction signal based on the boundary values and the input signal; (d) combining the correction signal with the input signal yielding a composite signal, wherein the composite signal is indicative of a signal of the sensor device substantially without hysteresis; and (e) outputting the composite signal for use by a system. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A hysteresis correction circuit assembly for correcting a hysteresis containing signal comprising:
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a comparator circuit that defines boundary conditions based on an incoming hysteresis bearing signal; a potentiometer providing an output correction value, wherein said correction value is selected responsive to a value of said hysteresis bearing signal; and an amplifier that combines said hysteretic bearing signal with the selected correction value to yield a composite signal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification