Patent US5730238A successfully refreshed from Google Patents.
US5730238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control method of electric car
Assignee: Panasonic Holdings Corp
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Filing: 1996-05-21
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Granted: 1998-03-24
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Expires: 2016-05-21
Abstract
Abstract By processing in a control processor 71 signal indicating the amount or degree of pushing-down of the accelerator pedal 2a and signals indicating the non pushing down and full pushing-down of the acceleration pedal 2a, the control unit 7 executes the judgment for determining whether the detected accelerator state is normal or anomalous. In case of judgment of "normal", a usual motor control is executed, whereas in case of judgment to be "anomaly", the system is tentatively designated to be "a state under which the anomaly is being detected". After a specified time lapse, a rejudgement operation is executed, and further when the anomaly is not solved even in this rejudgement operation, the situation is regarded to be a "real anomaly", and an anomaly procedure e.g. to stop current to the motor is executed. When the anomaly state is solved in the rejudgement operation, it is judged to be normal again.
Inventors
- 👤 Satoshi Tamaki
- 👤 Yasufumi Ikkai
- 👤 Masaki Tagome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:36
CPC Classifications
B; B60; B60L; B60L3/00; B60L3/04; B60L15/00; B60L15/20; B60L3/0023; B60L3/0038; B60L3/0061; B60L3/0092; B60L50/00; B60L50/50; B60L50/51; B60L2250/00; B60L2250/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64; Y02T10/70; Y02T10/72
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
180 words
In a method of controlling a motor of an electric car by detecting the state of an acceleration system through signal of pushing-down degree of an accelerator pedal and signals indicating full and non pushing downs of the accelerator pedal, the method comprising: step of making a judgment whether said detected state of acceleration system is normal or anomalous by examining relations of said pedal pushing-down degree signal with a first signal indicating full pushing-down of the accelerator pedal, and with a second signal indicating non pushing-down of the accelerator pedal, step of carrying out usual acceleration control, when the judgment is normal, step of, when the judgment is anomaly, tentatively judging the state being under anomaly detecting state, and then after a specified time lapse, executing a rejudgment operation, and step of, when the anomaly is not solved even in this rejudgment operation, regarding the situation to be a real anomaly and executing an anomaly procedure; whereas, when the anomaly state is solved in the rejudgment operation, making a judgment to be normal again, whereby executing the motor controlling.
Claim 2
Dependent Claim
180 words
In a method of controlling a motor of an electric car by detecting the state of an acceleration system through signal of pushing-down degree of an accelerator pedal and signals indicating full and non pushing downs of the accelerator pedal, the method comprising: step of making a judgment whether said detected state of acceleration system is normal or anomalous by examining relations of said pedal pushing-down degree signal with a first signal indicating full pushing-down of the accelerator pedal, and with a second signal indicating non pushing-down of the accelerator pedal, step of carrying out usual acceleration control, when the judgment is normal, step of, when the judgment is anomaly, tentatively judging the state being under anomaly detecting state, and then after a specified time lapse, executing a rejudgment operation, and step of, when the anomaly is not solved even in this rejudgment operation, regarding the situation to be a real anomaly and executing an anomaly procedure; whereas, when the anomaly state is solved in the rejudgment operation, making a judgment to be normal again, whereby executing the motor controlling.
Claim 3
Dependent Claim
39 words
A method of controlling a motor of an electric car in accordance with claim 1, in which during the time under anomaly detecting state a motor control instruction for making the output torque of the motor zero is executed.
Claim 4
Independent Claim
191 words
A method of controlling a motor of an electric car by detecting the state of an acceleration system having a pair of acceleration units each issuing signal of pushing-down degree of an accelerator and signals indicating full and non pushing downs of the accelerator pedal, the method comprising: step of making a judgment whether said detected state each unit of acceleration system is normal or anomalous by examining relations of a pair of pedal pushing-down degree signals with a pair of signals indicating full pushing-down of the accelerator pedal, and with a pair of signals indicating non pushing-down of the accelerator pedal, step of carrying out usual acceleration control, when the judgment is normal, step of, when the judgment is anomaly, tentatively judging the state being under anomaly detecting state, and then after a specified time lapse, executing a rejudgment operation, and step of, when the anomaly is not solved even in this rejudgment operation, regarding the situation to be a real anomaly and executing an anomaly procedure; whereas, when the anomaly state is solved in the rejudgment operation, making a judgment to be normal again. whereby executing the motor controlling.
Claim 5
Independent Claim
191 words
A method of controlling a motor of an electric car by detecting the state of an acceleration system having a pair of acceleration units each issuing signal of pushing-down degree of an accelerator and signals indicating full and non pushing downs of the accelerator pedal, the method comprising: step of making a judgment whether said detected state each unit of acceleration system is normal or anomalous by examining relations of a pair of pedal pushing-down degree signals with a pair of signals indicating full pushing-down of the accelerator pedal, and with a pair of signals indicating non pushing-down of the accelerator pedal, step of carrying out usual acceleration control, when the judgment is normal, step of, when the judgment is anomaly, tentatively judging the state being under anomaly detecting state, and then after a specified time lapse, executing a rejudgment operation, and step of, when the anomaly is not solved even in this rejudgment operation, regarding the situation to be a real anomaly and executing an anomaly procedure; whereas, when the anomaly state is solved in the rejudgment operation, making a judgment to be normal again. whereby executing the motor controlling.
Claim 6
Independent Claim
194 words
An apparatus for controlling a motor of an electric car by detecting the state of an acceleration system comprising: means for producing a pedal pushing-down degree signal of an accelerator pedal, means for producing a signal indicating full pushing-down of said accelerator pedal and also a signal of non pushing-down of said accelerator pedal, means for making a judgment whether said detected state of said acceleration system is normal or anomalous by receiving, and examining relations of, said pedal pushing-down degree signal with a signal indicating full pushing-down of the accelerator pedal, and with a signal indicating non pushing-down of the accelerator pedal, means for carrying out usual acceleration control, when the judgment result is normal, means for, when the judgment result is anomaly, tentatively judging the state being under anomaly detecting state, and then after a specified time lapse, executing a rejudgment operation, and means for, when the anomaly is not solved even in this rejudgment operation, regarding the situation to be a real anomaly and executing an anomaly procedure; whereas, when the anomaly state is solved in the rejudgment operation, making a judgment to be normal again, whereby executing the motor controlling.
Claim 7
Independent Claim
194 words
An apparatus for controlling a motor of an electric car by detecting the state of an acceleration system comprising: means for producing a pedal pushing-down degree signal of an accelerator pedal, means for producing a signal indicating full pushing-down of said accelerator pedal and also a signal of non pushing-down of said accelerator pedal, means for making a judgment whether said detected state of said acceleration system is normal or anomalous by receiving, and examining relations of, said pedal pushing-down degree signal with a signal indicating full pushing-down of the accelerator pedal, and with a signal indicating non pushing-down of the accelerator pedal, means for carrying out usual acceleration control, when the judgment result is normal, means for, when the judgment result is anomaly, tentatively judging the state being under anomaly detecting state, and then after a specified time lapse, executing a rejudgment operation, and means for, when the anomaly is not solved even in this rejudgment operation, regarding the situation to be a real anomaly and executing an anomaly procedure; whereas, when the anomaly state is solved in the rejudgment operation, making a judgment to be normal again, whereby executing the motor controlling.
Claim 8
Dependent Claim
39 words
An apparatus for controlling a motor of an electric car in accordance with claim 4, in which during the time under anomaly detecting state a motor control instruction for making the output torque of the motor zero is executed.
Claim 9
Independent Claim
215 words
A apparatus for controlling a motor of an electric car by detecting the state of an acceleration system comprising: first and second degree signal means each for producing a pedal pushing-down degree signal of an accelerator pedal, first and second means each for producing a signal indicating full pushing-down of said accelerator pedal and also a signal of non pushing-down of said accelerator pedal, means for making a judgment whether said detected state of said acceleration system is normal or anomalous by examining relations of a pair of pedal pushing-down degree signals from said first and second degree signal with a pair of signals indicating full pushing-down of the accelerator pedal, and with a pair of signals indicating non pushing-down of the accelerator pedal, means for carrying out usual acceleration control, when the judgment result is normal, means for, when the judgment result is anomaly, tentatively judging the state being under anomaly detecting state, and then after a specified time lapse, executing a rejudgment operation, and means for, when the anomaly is not solved even in this rejudgment operation, regarding the situation to be a real anomaly and executing an anomaly procedure; whereas, when the anomaly state is solved in the rejudgment operation, making a judgment to be normal again, whereby executing the motor controlling.
Claim 10
Independent Claim
215 words
A apparatus for controlling a motor of an electric car by detecting the state of an acceleration system comprising: first and second degree signal means each for producing a pedal pushing-down degree signal of an accelerator pedal, first and second means each for producing a signal indicating full pushing-down of said accelerator pedal and also a signal of non pushing-down of said accelerator pedal, means for making a judgment whether said detected state of said acceleration system is normal or anomalous by examining relations of a pair of pedal pushing-down degree signals from said first and second degree signal with a pair of signals indicating full pushing-down of the accelerator pedal, and with a pair of signals indicating non pushing-down of the accelerator pedal, means for carrying out usual acceleration control, when the judgment result is normal, means for, when the judgment result is anomaly, tentatively judging the state being under anomaly detecting state, and then after a specified time lapse, executing a rejudgment operation, and means for, when the anomaly is not solved even in this rejudgment operation, regarding the situation to be a real anomaly and executing an anomaly procedure; whereas, when the anomaly state is solved in the rejudgment operation, making a judgment to be normal again, whereby executing the motor controlling.
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) | 2001-03-23 | 2001-09-22 | 2002-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-23 | 2005-09-22 | 2006-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-23 | 2009-09-22 | 2010-03-24 | $7700.00 | Window Closed / Lapsed |