Model Based Automated Calibration for Shift Control of Automatic Transmission

Lee, Heeyun; Gu, Bonhyun; Won, Suk; Lim, Wonsik

doi:10.1007/s12239-021-0026-2

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…It is difficult to achieve universal applicability between different transmissions. A model-based automatic calibration algorithm was developed for the hydraulic calibration of an automatic transmission (AT) clutch [9]. An automatic virtual calibration framework was developed to calculate the optimal shift time and shift comfort of automated manual transmission (AMT) in a model-in-the-loop test environment [12].…”

Section: Introductionmentioning

confidence: 99%

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A Fast Optimizing Method of Clutch–Clutch Shift Calibration Parameters

Lin,

Yue,

et al. 2024

Electronics

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Aiming at the drawbacks of the heavy workload and lengthy calibration cycle of transmission control unit (TCU) development, a fast optimizing and test method of clutch–clutch shift calibration parameters is developed based on the “V” development process. A controlled-object simulation model of a six-speed automatic transmission (6AT) is established, and the shift calibration parameters and shift quality evaluation system are studied. Therefore, a model-in-the-loop (MIL) calibration platform for key calibration parameters and evaluation indicators in the shift process is constructed. By setting the optimization target of evaluation indicators, the initial calibration parameters’ ranges are reduced. Finally, the TCU is flashed with the optimized calibration parameters, and a hardware-in-the-loop (HIL) test system is built to verify the shift quality. The same shift quality verification test is carried out in the vehicle. The test results show that the application of the MIL simulation platform can enable the batch simulation analysis of eight key shift calibration parameters, gradually refine the initial rough interval, and ensure shift quality. The shift calibration parameters are cross-validated in multiple development links, and the dependence on vehicle calibration is greatly reduced. The development cycle is effectively shortened to less than 6 months.

show abstract

Section: Introductionmentioning

confidence: 99%

“…At present, there are some mature automatic calibration systems for automatic transmissions in the world [8][9][10], mainly using in model-in-the-loop (MIL) and hardware-inthe-loop (HIL) test platforms. But their calibration applicability to different control objects is limited [11].…”

Section: Introductionmentioning

confidence: 99%

A Fast Optimizing Method of Clutch–Clutch Shift Calibration Parameters

Lin,

Yue,

et al. 2024

Electronics

View full text Add to dashboard Cite

show abstract

“…In general, the inconsistency caused by manufacturing errors, life-cycle changes, or other changes in hydraulic characteristics are the main reason affecting the shift quality. However, relying on manual calibration 6 to ensure a good shift quality is labor-intensive and financially expensive, and it does not meet the requirements of market laws 7 .…”

Section: Introductionmentioning

confidence: 99%

Research on shifting process control of automatic transmission

Zou

Wang

Zhong

et al. 2022

Sci Rep

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The shift quality of an automatic transmission directly affects the human-perceived comfort and the durability of the automatic transmission. In general, the inconsistency caused by manufacturing errors, life-cycle changes, or other changes in hydraulic characteristics are the main reason affecting the shift quality, which should be compensated by adaptive control in the shifting process. In this paper, we first provide an in-depth analysis of the relationship between proportional solenoid current, clutch pressure, speed and torque in the shifting process control. Then we propose two efficient adaptive control strategies for the torque phase and inertia phase, respectively. Both algorithms are tested and verified on a riot utility vehicle. The experimental results indicate that the adaptive control strategies proposed in this paper can effectively compensate the engine flare and the clutch tie-up of the torque phase, and keep the inertia phase within a proper time range.

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Transformation of Intelligent IoT in the Energy Sector

Samanta

Banerjee

2021

Computationally Intensive Statistics for Intelligent IoT

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Model Based Automated Calibration for Shift Control of Automatic Transmission

Cited by 5 publications

References 18 publications

A Fast Optimizing Method of Clutch–Clutch Shift Calibration Parameters

A Fast Optimizing Method of Clutch–Clutch Shift Calibration Parameters

Research on shifting process control of automatic transmission

Transformation of Intelligent IoT in the Energy Sector

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