Design and performance evaluation of a single actuator double acting electro-mechanical continuously variable transmission /
Continuously variable transmission (CVT) is one of the transmission systems in automotive that offers a continuous shifting operation of transmission ratio in order to deliver better vehicle performance in longitudinal direction. The existing belt type CVT has issues with belt misalignment and power...
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| Formato: | Software eBook |
| Idioma: | English |
| Publicado: |
2019.
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| 003 | UTeM | ||
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| 008 | 200714s2019 my ||||| |||| 00| | eng d | ||
| 999 | |c 117119 |d 117119 | ||
| 020 | |c gift | ||
| 040 | |a UTeM |b eng |c UTeM |e rda | ||
| 090 | 0 | 0 | |a TL262 |b .N72 2019 |
| 100 | 0 | |a Nur Rashid Mat Nuri, |e author. |9 76995 | |
| 245 | 1 | 0 | |a Design and performance evaluation of a single actuator double acting electro-mechanical continuously variable transmission / |c Nur Rashid Mat Nuri @ Md Din. |
| 264 | 1 | |c 2019. | |
| 300 | |a xxiii, 211 pages : |b colour illustrations, charts ; |c 30 cm + |e 1 computer disc (12 cm) | ||
| 336 | |a text |2 rdacontent | ||
| 336 | |a still image |2 rdacontent | ||
| 337 | |a unmediated |2 rdamedia | ||
| 338 | |a volume |2 rdacarrier | ||
| 347 | |a text file |b PDF |c 12.3 MB |2 rda | ||
| 500 | |a Accompanied by CD : CDR 20606. | ||
| 504 | |a Reference : pages 154-171. | ||
| 520 | |a Continuously variable transmission (CVT) is one of the transmission systems in automotive that offers a continuous shifting operation of transmission ratio in order to deliver better vehicle performance in longitudinal direction. The existing belt type CVT has issues with belt misalignment and power loss inside the hydraulic actuation system. Thus, a new electro-mechanical (EM) CVT has been proposed to solve these problems. In this study, the new EM CVT known as single actuator double acting electro-mechanical (SADAEM) CVT has been developed which adapted the power screw mechanism, operated by using one direct current (DC) motor to simultaneously change the CVT ratio. The double action of the pulleys in axial movements on the main shaft for both the drive (input) and the driven (output) is designed to eliminate the belt misalignment. After the development of SADAEM CVT system, test rig set up, calibration and validation works have been performed and the CVT ratio tracking performance was assessed using step, sine and triangle input trajectories. Then, after verifying the developed longitudinal vehicle model and the CarSim vehicle model, the vehicle speed control was implemented to compare the performance of the vehicle equipped with automatic transmission (AT) and the CVT systems. Next, the vehicle speed control with SADAEM CVT was further developed using an adaptive proportional-integral-derivative (PID) controller and optimised using gravitational search algorithm (GSA). Lastly, the SADAEM CVT system was implemented on hardware-in-the-loop (HIL) simulation to study the SADAEM CVT’s effectiveness in navigating the vehicle at various speeds across different road slopes. The validation results showed that the dynamic response of the DC motor output torque and the CVT ratio was below 14% and 1.7% of the root mean square (RMS) percentage of error, respectively. Furthermore, the CVT ratio position tracking performance in step response showed acceptable transient response in up-shift and down-shift patterns. Meanwhile, sinusoidal and triangle responses indicated that the simulation and experimental works can match the desired CVT ratio pattern at below 5% peak-to-peak (PTP) error and time delay below 0.3 second. Application of SADAEM CVT system on the vehicle showed that it took approximately 1.5 seconds faster to achieve a vehicle speed of 100 km/h and the fuel consumed was reduced by 11.3% compared to a vehicle with the AT system. The results from the HIL simulation also suggested that the SADAEM CVT test rig was capable of providing adequate responses to control the vehicle speed and to guide the vehicle along the various road slope conditions. Therefore, with the upgrade on EM actuation system and transmission ratio, the SADAEM CVT system could provide the highest vehicle performance in longitudinal direction. | ||
| 650 | 0 | |a Automobiles |x Transmission devices. |9 1623 | |
| 650 | 0 | |a Automobiles |x Transmission devices, Continuously variable. |9 167190 | |
| 650 | 0 | |a Automobiles |x Performance. |9 148 | |
| 710 | 2 | |a Universiti Teknologi Malaysia, |e issuing body. |9 6982 | |
| 720 | |a Associate Professor Ir. Ts. Dr. Saiful Amri Mazlan | ||
| 790 | |a Malaysia-Japan International Institute of Technology | ||
| 791 | |a Doctor of Philosophy | ||
| 792 | |a 2019 | ||
| 942 | |2 lcc |c THP - A |k a | ||
| 997 | |a GIFT | ||
| 998 | 0 | 0 | |a mhj/140720 |
| 998 | 0 | 0 | |a mca/081020 |
| 952 | |0 0 |1 0 |2 lcc |4 0 |6 TL0262 N72 02019 |7 0 |9 145850 |a PLHKI |b PLHKI |c 1 |d 2020-07-14 |o TL262 .N72 2019 |p 87506481 |r 2020-07-14 |w 2020-07-14 |y THP - A | ||
| 952 | |0 0 |1 0 |2 lcc |4 0 |6 CDR20606 |7 0 |9 145851 |a MEDIA |b MEDIA |c 5 |d 2020-07-14 |o CDR 20606 |p 87506482 |r 2020-07-14 |w 2020-07-14 |y CDR - MEA | ||