US4735273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixed speed cruising control apparatus for a vehicle
Assignee: Mitsubishi Electric Corp
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Filing: 1987-05-26
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Granted: 1988-04-05
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Expires: 2007-05-26
Abstract
Abstract A fixed speed cruising control apparatus for a vehicle comprises a cruising speed detecting means, a signal smoothening means, smoothening-characteristic adjusting means, and a driving force control means wherein the signal-smoothening-characteristic adjusting means generates to the signal smoothening means a signal on the basis of a smoothened cruising speed signal from the signal smoothening means so that noise components in the smoothened cruising speed signal are cancelled in the smoothening means.
Inventors
- 👤 Yasuo Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:41
CPC Classifications
B; B60; B60K; B60K31/00; B60K31/06; B60K31/10; B60K31/102; B60K31/105; B60K31/107
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
A fixed speed cruising control apparatus for a vehicle which comprises: a cruising speed detecting means for detecting cruising speed of a vehicle to generate a cruising speed signal, a smoothening means having changeable smoothening characteristics which receives said cruising speed signal to smoothen the same and outputs a smoothened cruising speed signal, a signal-smoothening-characteristic adjusting means which receives said smoothened cruising speed signal and processes the same to output a signal-smoothening-characteristic adjusting signal so as to cancel a signal of noise component in said smoothened cruising speed signal which is included in an output value obtained by processing; a driving force control means which compares said smoothened cruising speed signal generated from said smoothening means with a target speed signal for maintaining the vehicle at a given target speed to thereby control a driving force to said vehicle, wherein said signal-smoothening-characteristic adjusting signal is inputted in said smoothening means.
Claim 2
Dependent Claim
150 words
A fixed speed cruising control apparatus for a vehicle which comprises: a cruising speed detecting means for detecting cruising speed of a vehicle to generate a cruising speed signal, a smoothening means having changeable smoothening characteristics which receives said cruising speed signal to smoothen the same and outputs a smoothened cruising speed signal, a signal-smoothening-characteristic adjusting means which receives said smoothened cruising speed signal and processes the same to output a signal-smoothening-characteristic adjusting signal so as to cancel a signal of noise component in said smoothened cruising speed signal which is included in an output value obtained by processing; a driving force control means which compares said smoothened cruising speed signal generated from said smoothening means with a target speed signal for maintaining the vehicle at a given target speed to thereby control a driving force to said vehicle, wherein said signal-smoothening-characteristic adjusting signal is inputted in said smoothening means.
Claim 3
Dependent Claim
120 words
The fixed speed cruising control apparatus according to claim 1, wherein said signal-smoothening-characteristic adjusting means comprises: an acceleration processing means for processing several smoothened cruising speed signals generated for every predetermined time period to output an acceleration signal, an acceleration-changing-rate processing means for processing said acceleration signal for every predetermined time period to output an acceleration-changing-rate signal, an acceleration-changing-rate summing means for summing, for a given number of time, the absolute value of each of said acceleration-changing-rate signals when the code of said acceleration signal is inversed to thereby output an acceleration-changing-rate summing signal, and a signal-smoothening-characteristic adjusting signal processing means for outputting a signal-smoothening-characteristic adjusting signal on the basis of said acceleration-changing-rate summing signal from said acceleration-changing-rate summing means.
Claim 4
Dependent Claim
18 words
The fixed speed cruising control apparatus according to claim 1, wherein said smoothening means is a digital filter.
Claim 5
Dependent Claim
34 words
The fixed speed cruising control apparatus according to claim 1, wherein said driving force control means comprises a target speed signal generating means, a speed deviation processing means and a controlled quantity processing means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |