US Patent No: 8,067,917
Number of patents in Portfolio can not be more than 2000
Hysteresis mitigation and control method
Stats
-
Nov 29, 2011
Issued date -
Apr 1, 2009
filing date -
12/416,534
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
A system and control method mitigates hysteresis of an adjustable component in the system. A control module can allow small control changes to be effected to the component within limits of the component's and/or the system's normal hysteresis band. The control method can allow finer, more accurate and more aggressive control to be obtained from the component. The system and method can utilize two separate control regimes to control adjustments to the component. The first control regime can control changes larger than a hysteresis band and/or changes in a same direction as the last adjustment that was performed with the first control regime. The first control regime can be a feedback-based adjustment to the component. The second control regime can be utilized to control changes within the hysteresis band. The second control regime can use open-loop based adjustments to the component.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 6,272,401 Valve positioner system | 30 | 1998 | |
| 6,745,084 Valve positioner system | 21 | 2001 | |
| 7,089,086 Method, system and storage medium for performing online valve diagnostics | 13 | 2004 | |
|
|
|||
| 7,528,590 DC/DC boost converter with pulse skipping circuitry | 4 | 2007 | |
| 7,622,963 General purpose comparator with multiplexer inputs | 3 | 2007 | |
| 7,768,242 DC/DC boost converter with resistorless current sensing | 4 | 2007 | |
|
|
|||
| 6,581,847 Variable-air-volume diffuser, actuator assembly and method | 6 | 2001 | |
|
|
|||
| 4,628,233 Microprocessor based motor control | 36 | 1985 | |
|
|
|||
| 6,962,164 System and method for a mass flow controller | 18 | 2002 | |
|
|
|||
| 5,810,095 System for controlling the position of an implement attached to a work vehicle | 47 | 1996 | |
|
|
|||
| 6,819,520 Use of momentum transfer actuators for motion control of flexible mechanical structures | 2 | 2000 | |
|
|
|||
| 4,546,426 Method for controlling the position of an actuator in a manner whereby the adjustment is adaptive | 20 | 1983 | |
|
|
|||
| 5,745,084 Very small aperture terminal & antenna for use therein | 12 | 1995 | |
|
|
|||
| 6,975,087 Closed-loop control system | 8 | 2004 | |
|
|
|||
| 4,455,512 System for linear motor control | 19 | 1982 | |
|
|
|||
| 6,999,853 Methods and apparatus for operating and performing diagnostics in a control loop of a control valve | 3 | 2004 | |
|
|
|||
| 7,039,537 Detection and discrimination of instabilities in process control loops | 6 | 2004 | |
|
|
|||
| 5,687,098 Device data acquisition | 44 | 1995 | |
|
|
|||
| 6,717,443 Method and apparatus for mitigating the hysteresis effect in a sensing circuit | 2 | 2002 | |
|
|
|||
| 4,901,625 Apparatus and method for positioning equipment | 26 | 1989 | |
|
|
|||
| 6,155,283 Intelligent valve positioner tuning | 20 | 1999 | |
|
|
|||
| 7,024,336 Method of and apparatus for evaluating the performance of a control system | 5 | 2004 | |
|
|
|||
| 6,716,359 Enhanced time-based proportional control | 13 | 2000 | |
|
|
|||
| 5,119,866 Method and apparatus for controlling a casting process by controlling the movement of a squeezing plunger | 7 | 1989 | |
|
|
|||
| 5,999,853 Dual chamber pacemaker with single pass lead and with bipolar and unipolar signal processing capability | 51 | 1998 | |
|
|
|||
| 6,094,602 Method and apparatus for estimating and controlling non-linear disturbances in a feedback control system | 21 | 1997 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 29, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 29, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 29, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |