US5852996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttle valve positioning control apparatus
Assignee: Nissan Motor Co Ltd
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Filing: 1996-12-06
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Granted: 1998-12-29
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Expires: 2016-12-06
Abstract
Abstract An apparatus for controlling the positioning of a throttle valve situated to control the amount of air permitted to enter an internal combustion engine operable in a plurality of control modes. The apparatus includes a driver responsive to a drive signal indicating a target throttle valve position for moving the throttle valve to the target throttle valve position, a sensor sensitive to the movement of the throttle valve for producing a digital sensor signal indicative of a sensed throttle valve position, and a control unit for producing the drive signal to bring the sensed throttle valve position into coincidence with the target throttle valve position. The disturbances introduced onto the driver and the sensor are estimated based on the target and sensed throttle valve positions. The target throttle valve position is corrected based on the estimated disturbances.
Inventors
- 👤 Hideo Nakamura
- 👤 Masashi Matsuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
F; F02; F02D; F02D11/00; F02D11/06; F02D11/10; F02D35/00; F02D35/0007; F02D2011/101; F02D2011/102
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
183 words
The throttle valve positioning control apparatus, for controlling the positioning of a throttle valve situated to control the amount of air permitted to enter an internal combustion engine operable in a plurality of control modes, comprising: drive means responsive to a drive signal indicating a target throttle valve position for moving the throttle valve to the target throttle valve position; sensor means sensitive to the movement of the throttle valve for producing a sensor signal indicative of a sensed throttle valve position; and control means connected between the sensor means and the drive means for producing the drive signal to bring the sensed throttle valve position into coincidence with the target throttle valve position, the control means including disturbance estimating means for estimating disturbances introduced onto the drive means and the sensor means based on the target and sensed throttle valve positions, and means for correcting the target throttle valve position based on the estimated disturbances, further including a low pass filter provided at an output of the disturbance estimating means for eliminating noises introduced onto the output of the disturbance estimating means.
Claim 2
Dependent Claim
183 words
The throttle valve positioning control apparatus, for controlling the positioning of a throttle valve situated to control the amount of air permitted to enter an internal combustion engine operable in a plurality of control modes, comprising: drive means responsive to a drive signal indicating a target throttle valve position for moving the throttle valve to the target throttle valve position; sensor means sensitive to the movement of the throttle valve for producing a sensor signal indicative of a sensed throttle valve position; and control means connected between the sensor means and the drive means for producing the drive signal to bring the sensed throttle valve position into coincidence with the target throttle valve position, the control means including disturbance estimating means for estimating disturbances introduced onto the drive means and the sensor means based on the target and sensed throttle valve positions, and means for correcting the target throttle valve position based on the estimated disturbances, further including a low pass filter provided at an output of the disturbance estimating means for eliminating noises introduced onto the output of the disturbance estimating means.
Claim 3
Dependent Claim
216 words
The throttle valve positioning control apparatus, for controlling the positioning of a throttle valve situated to control the amount of air permitted to enter an internal combustion engine operable in a plurality of control modes, comprising: drive means responsive to a drive signal indicating a target throttle valve position for moving the throttle valve to the target throttle valve position; sensor means sensitive to the movement of the throttle valve for producing a sensor signal indicative of a sensed throttle valve position; and control means connected between the sensor means and the drive means for producing the drive signal to bring the sensed throttle valve position into coincidence with the target throttle valve position, the control means including disturbance estimating means for estimating disturbances introduced onto the drive means and the sensor means based on the target and sensed throttle valve positions, and means for correcting the target throttle valve position based on the estimated disturbances, wherein the sensor means includes a sensor for producing an analog sensor signal indicative of the sensed throttle valve position and an analog-to-digital converter for repetitively converting the analog sensor signal into a corresponding digital value at uniform intervals of time, and means for averaging the digital values converted for a predetermined period of time to produce the sensor signal.
Claim 4
Dependent Claim
216 words
The throttle valve positioning control apparatus, for controlling the positioning of a throttle valve situated to control the amount of air permitted to enter an internal combustion engine operable in a plurality of control modes, comprising: drive means responsive to a drive signal indicating a target throttle valve position for moving the throttle valve to the target throttle valve position; sensor means sensitive to the movement of the throttle valve for producing a sensor signal indicative of a sensed throttle valve position; and control means connected between the sensor means and the drive means for producing the drive signal to bring the sensed throttle valve position into coincidence with the target throttle valve position, the control means including disturbance estimating means for estimating disturbances introduced onto the drive means and the sensor means based on the target and sensed throttle valve positions, and means for correcting the target throttle valve position based on the estimated disturbances, wherein the sensor means includes a sensor for producing an analog sensor signal indicative of the sensed throttle valve position and an analog-to-digital converter for repetitively converting the analog sensor signal into a corresponding digital value at uniform intervals of time, and means for averaging the digital values converted for a predetermined period of time to produce the sensor signal.
Claim 5
Dependent Claim
31 words
The throttle valve positioning control apparatus as claimed in claim 2, wherein the disturbance estimating means has a frequency characteristic changed according to the control mode where the engine is operating.
Claim 6
Dependent Claim
48 words
The throttle valve positioning control apparatus as claimed in claim 2, wherein the control means includes a feedback type model matching compensator and a feed forward type phase compensator for causing the sensed throttle valve position to follow the target throttle valve position in a predetermined response characteristic.
Claim 7
Dependent Claim
37 words
The throttle valve positioning control apparatus as claimed in claim 2, further including low pass filters provided at respective inputs of the disturbance estimating means for eliminating noises introduced onto the inputs of the disturbance estimating means.
Claim 8
Dependent Claim
38 words
The throttle valve positioning control apparatus as claimed in claim 2, further including a low pass filter provided at an output of the disturbance estimating means for eliminating noises introduced onto the output of the disturbance estimating means.
Claim 9
Dependent Claim
32 words
The throttle valve positioning control apparatus as claimed in claim 2, wherein the sensor means includes means for changing the time interval according to the control mode where the engine is operating.
Claim 10
Dependent Claim
31 words
The throttle valve positioning control apparatus as claimed in claim 7, wherein the disturbance estimating means has a frequency characteristic changed according to the control mode where the engine is operating.
Claim 11
Dependent Claim
48 words
The throttle valve positioning control apparatus as claimed in claim 7, wherein the control means includes a feedback type model matching compensator and a feed forward type phase compensator for causing the sensed throttle valve position to follow the target throttle valve position in a predetermined response characteristic.
Claim 12
Dependent Claim
37 words
The throttle valve positioning control apparatus as claimed in claim 7, further including low pass filters provided at respective inputs of the disturbance estimating means for eliminating noises introduced onto the inputs of the disturbance estimating means.
Claim 13
Dependent Claim
38 words
The throttle valve positioning control apparatus as claimed in claim 7, further including a low pass filter provided at an output of the disturbance estimating means for eliminating noises introduced onto the output of the disturbance estimating means.
Claim 14
Independent Claim
225 words
An apparatus for controlling the positioning of a throttle valve situated to control the amount of air permitted to enter an internal combustion engine operable in a plurality of control modes, comprising: drive means responsive to a drive signal indicating a target throttle valve position for moving the throttle valve to the target throttle valve position; sensor means sensitive to the movement of the throttle valve for producing a digital sensor signal indicative of a sensed throttle valve position; and control means connected between the sensor means and the drive means for producing the drive signal to bring the sensed throttle valve position into coincidence with the target throttle valve position, the control means including disturbance estimating means for estimating disturbances introduced onto the drive means and the sensor means based on the target and sensed throttle valve positions, and means for correcting the target throttle valve position based on the estimated disturbances; wherein the sensor means includes a sensor for producing an analog sensor signal indicative of the sensed throttle valve position, a plurality of amplifiers for amplifying the analog sensor signal at different amplification factors, analog-to-digital converters for converting the respective amplified analog sensor signals into corresponding digital values, and means for selecting one of the digital values according to the control mode where the engine is operating to produce the sensor signal.
Claim 15
Independent Claim
225 words
An apparatus for controlling the positioning of a throttle valve situated to control the amount of air permitted to enter an internal combustion engine operable in a plurality of control modes, comprising: drive means responsive to a drive signal indicating a target throttle valve position for moving the throttle valve to the target throttle valve position; sensor means sensitive to the movement of the throttle valve for producing a digital sensor signal indicative of a sensed throttle valve position; and control means connected between the sensor means and the drive means for producing the drive signal to bring the sensed throttle valve position into coincidence with the target throttle valve position, the control means including disturbance estimating means for estimating disturbances introduced onto the drive means and the sensor means based on the target and sensed throttle valve positions, and means for correcting the target throttle valve position based on the estimated disturbances; wherein the sensor means includes a sensor for producing an analog sensor signal indicative of the sensed throttle valve position, a plurality of amplifiers for amplifying the analog sensor signal at different amplification factors, analog-to-digital converters for converting the respective amplified analog sensor signals into corresponding digital values, and means for selecting one of the digital values according to the control mode where the engine is operating to produce the sensor signal.
Claim 16
Dependent Claim
31 words
The throttle valve positioning control apparatus as claimed in claim 12, wherein the disturbance estimating means has a frequency characteristic changed according to the control mode where the engine is operating.
Claim 17
Dependent Claim
48 words
The throttle valve positioning control apparatus as claimed in claim 12, wherein the control means includes a feedback type model matching compensator and a feed forward type phase compensator for causing the sensed throttle valve position to follow the target throttle valve position in a predetermined response characteristic.
Claim 18
Dependent Claim
37 words
The throttle valve positioning control apparatus as claimed in claim 12, further including low pass filters provided at respective inputs of the disturbance estimating means for eliminating noises introduced onto the inputs of the disturbance estimating means.
Claim 19
Dependent Claim
38 words
The throttle valve positioning control apparatus as claimed in claim 12, further including a low pass filter provided at an output of the disturbance estimating means for eliminating noises introduced onto the output of the disturbance estimating means.
Claim 20
Dependent Claim
208 words
The throttle valve positioning control apparatus, for controlling the positioning of a throttle valve situated to control the amount of air permitted to enter an internal combustion engine operable in a plurality of control modes, comprising: drive means responsive to a drive signal indicating a target throttle valve position for moving the throttle valve to the target throttle valve position; sensor means sensitive to the movement of the throttle valve for producing a sensor signal indicative of a sensed throttle valve position; and control means connected between the sensor means and the drive means for producing the drive signal to bring the sensed throttle valve position into coincidence with the target throttle valve position, the control means including disturbance estimating means for estimating disturbances introduced onto the drive means and the sensor means based on the target and sensed throttle valve positions, and means for correcting the target throttle valve position based on the estimated disturbances, wherein the sensor means includes a sensor for producing analog sensor signal indicative of the sensed throttle valve position, a plurality of amplifiers for amplifying factors, analog-to-digital converters for converting the respective amplified analog sensor signals into corresponding digital values, and means for interpolating the digital values to produce the sensor signal.
Claim 21
Dependent Claim
208 words
The throttle valve positioning control apparatus, for controlling the positioning of a throttle valve situated to control the amount of air permitted to enter an internal combustion engine operable in a plurality of control modes, comprising: drive means responsive to a drive signal indicating a target throttle valve position for moving the throttle valve to the target throttle valve position; sensor means sensitive to the movement of the throttle valve for producing a sensor signal indicative of a sensed throttle valve position; and control means connected between the sensor means and the drive means for producing the drive signal to bring the sensed throttle valve position into coincidence with the target throttle valve position, the control means including disturbance estimating means for estimating disturbances introduced onto the drive means and the sensor means based on the target and sensed throttle valve positions, and means for correcting the target throttle valve position based on the estimated disturbances, wherein the sensor means includes a sensor for producing analog sensor signal indicative of the sensed throttle valve position, a plurality of amplifiers for amplifying factors, analog-to-digital converters for converting the respective amplified analog sensor signals into corresponding digital values, and means for interpolating the digital values to produce the sensor signal.
Claim 22
Dependent Claim
31 words
The throttle valve positioning control apparatus as claimed in claim 17, wherein the disturbance estimating means has a frequency characteristic changed according to the control mode where the engine is operating.
Claim 23
Dependent Claim
48 words
The throttle valve positioning control apparatus as claimed in claim 17, wherein the control means includes a feedback type model matching compensator and a feed forward type phase compensator for causing the sensed throttle valve position to follow the target throttle valve position in a predetermined response characteristic.
Claim 24
Dependent Claim
37 words
The throttle valve positioning control apparatus as claimed in claim 17, further including low pass filters provided at respective inputs of the disturbance estimating means for eliminating noises introduced onto the inputs of the disturbance estimating means.
Claim 25
Dependent Claim
38 words
The throttle valve positioning control apparatus as claimed in claim 17, further including a low pass filter provided at an output of the disturbance estimating means for eliminating noises introduced onto the output of the disturbance estimating means.
Claim 26
Dependent Claim
57 words
The throttle valve positioning control apparatus as claimed in claim 17, wherein the sensor means includes means for selecting one of the digital values according to the control mode where the engine is operating, and means for interpolating the digital values based on the selected digital value to produce the digital sensor signal to the control means.
Claim 27
Dependent Claim
31 words
The throttle valve positioning control apparatus as claimed in claim 22, wherein the disturbance estimating means has a frequency characteristic changed according to the control mode where the engine is operating.
Claim 28
Dependent Claim
48 words
The throttle valve positioning control apparatus as claimed in claim 22, wherein the control means includes a feedback type model matching compensator and a feed forward type phase compensator for causing the sensed throttle valve position to follow the target throttle valve position in a predetermined response characteristic.
Claim 29
Dependent Claim
37 words
The throttle valve positioning control apparatus as claimed in claim 22, further including low pass filters provided at respective inputs of the disturbance estimating means for eliminating noises introduced onto the inputs of the disturbance estimating means.
Claim 30
Dependent Claim
38 words
The throttle valve positioning control apparatus as claimed in claim 22, further including a low pass filter provided at an output of the disturbance estimating means for eliminating noises introduced onto the output of the disturbance estimating means.
Claim 31
Dependent Claim
49 words
The throttle valve positioning control apparatus as claimed in claim 17, wherein the sensor means includes means for interpolating the digital values based on the interpolated value obtained in the last cycle of production of the digital sensor signal to produce the digital sensor signal to the control means.
Claim 32
Dependent Claim
31 words
The throttle valve positioning control apparatus as claimed in claim 27, wherein the disturbance estimating means has a frequency characteristic changed according to the control mode where the engine is operating.
Claim 33
Dependent Claim
48 words
The throttle valve positioning control apparatus as claimed in claim 27, wherein the control means includes a feedback type model matching compensator and a feed forward type phase compensator for causing the sensed throttle valve position to follow the target throttle valve position in a predetermined response characteristic.
Claim 34
Dependent Claim
37 words
The throttle valve positioning control apparatus as claimed in claim 27, further including low pass filters provided at respective inputs of the disturbance estimating means for eliminating noises introduced onto the inputs of the disturbance estimating means.
Claim 35
Dependent Claim
38 words
The throttle valve positioning control apparatus as claimed in claim 27, further including a low pass filter provided at an output of the disturbance estimating means for eliminating noises introduced onto the output of the disturbance estimating means.
References Cited (Backward Citations)
US5389867A
Cited
US5406920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-28 | 2002-06-29 | 2002-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-28 | 2006-06-29 | 2006-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-28 | 2010-06-29 | 2010-12-29 | $7700.00 | Window Closed / Lapsed |