Shifting control of an automated mechanical transmission without using the clutch.
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| Title: | Shifting control of an automated mechanical transmission without using the clutch. |
|---|---|
| Authors: | Zhong, Z.1, Kong, G.1 guolingkong@gmail.com, Yu, Z.1, Xin, X.1, Chen, X.1 |
| Source: | International Journal of Automotive Technology. Jun2012, Vol. 13 Issue 4, p487-496. 10p. |
| Subjects: | Automobile transmission, Clutches (Machinery), Automatic control systems, Algorithms, Automobile industry |
| Abstract: | The automated mechanical transmission (AMT) is gaining popularity in the automotive industry, due to its combination of the advantages of mechanical transmissions (MT) and automatic transmissions (AT) in terms of fuel consumption, low cost, improved driving comfort and shifting quality. However, the inherent structural characteristics of the AMT lead to disadvantages, including excessive wear of the clutch plates and jerk and traction interruption during the shift process, that severely affect its popularity in the automatic transmission industry. The emerging technology of shifting control without the use of the clutch is a promising way to improve the shifting transients of AMTs. This paper proposes a control algorithm that combines speed and torque control of the AMT vehicle powertrain to achieve shifting control without using the clutch. The key technologies of accurate engine torque and speed control and rapid position control of the shift actuators are described in detail. To realize accurate engine speed control, a combined control algorithm based on feed-forward, bang-bang and PID control is adopted. Additionally, an optimized closed-loop position control algorithm based on LQR is proposed for the shift actuators. The coordinated control algorithm based on engine and shift actuator control is described in detail and validated on a test vehicle equipped with an AMT. The results show that the coordinated control algorithm can achieve shifting control without the use of the clutch to improve driving comfort significantly, reduce shift transients and extend the service life of the clutch. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Automotive Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 73558284 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Shifting control of an automated mechanical transmission without using the clutch. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zhong%2C+Z%2E%22">Zhong, Z.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kong%2C+G%2E%22">Kong, G.</searchLink><relatesTo>1</relatesTo><i> guolingkong@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Yu%2C+Z%2E%22">Yu, Z.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Xin%2C+X%2E%22">Xin, X.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Chen%2C+X%2E%22">Chen, X.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Automotive+Technology%22">International Journal of Automotive Technology</searchLink>. Jun2012, Vol. 13 Issue 4, p487-496. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Automobile+transmission%22">Automobile transmission</searchLink><br /><searchLink fieldCode="DE" term="%22Clutches+%28Machinery%29%22">Clutches (Machinery)</searchLink><br /><searchLink fieldCode="DE" term="%22Automatic+control+systems%22">Automatic control systems</searchLink><br /><searchLink fieldCode="DE" term="%22Algorithms%22">Algorithms</searchLink><br /><searchLink fieldCode="DE" term="%22Automobile+industry%22">Automobile industry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The automated mechanical transmission (AMT) is gaining popularity in the automotive industry, due to its combination of the advantages of mechanical transmissions (MT) and automatic transmissions (AT) in terms of fuel consumption, low cost, improved driving comfort and shifting quality. However, the inherent structural characteristics of the AMT lead to disadvantages, including excessive wear of the clutch plates and jerk and traction interruption during the shift process, that severely affect its popularity in the automatic transmission industry. The emerging technology of shifting control without the use of the clutch is a promising way to improve the shifting transients of AMTs. This paper proposes a control algorithm that combines speed and torque control of the AMT vehicle powertrain to achieve shifting control without using the clutch. The key technologies of accurate engine torque and speed control and rapid position control of the shift actuators are described in detail. To realize accurate engine speed control, a combined control algorithm based on feed-forward, bang-bang and PID control is adopted. Additionally, an optimized closed-loop position control algorithm based on LQR is proposed for the shift actuators. The coordinated control algorithm based on engine and shift actuator control is described in detail and validated on a test vehicle equipped with an AMT. The results show that the coordinated control algorithm can achieve shifting control without the use of the clutch to improve driving comfort significantly, reduce shift transients and extend the service life of the clutch. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Automotive Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s12239-012-0046-z Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 487 Subjects: – SubjectFull: Automobile transmission Type: general – SubjectFull: Clutches (Machinery) Type: general – SubjectFull: Automatic control systems Type: general – SubjectFull: Algorithms Type: general – SubjectFull: Automobile industry Type: general Titles: – TitleFull: Shifting control of an automated mechanical transmission without using the clutch. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhong, Z. – PersonEntity: Name: NameFull: Kong, G. – PersonEntity: Name: NameFull: Yu, Z. – PersonEntity: Name: NameFull: Xin, X. – PersonEntity: Name: NameFull: Chen, X. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 12299138 Numbering: – Type: volume Value: 13 – Type: issue Value: 4 Titles: – TitleFull: International Journal of Automotive Technology Type: main |
| ResultId | 1 |
