Formulation of intervibrator motion and development of a controller for a pulse-drive transmission

Tsuchiya, Eiji; Shamoto, Eiji

doi:10.1016/j.mechmachtheory.2020.103880

Cited by 6 publications

(4 citation statements)

References 12 publications

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“…Не дало належного ефекту і створення так званих пружних моделей, що характеризуються більшою можливістю з реалізації характеристик, більшою кількістю ступенів свободи (вільності) та інші особливості [12][13][14]. Таким чи-ном, очевидною є потреба у принципово новому підході до схемного вирішення можливості безступеневої передачі інерційними масами силового потоку.…”

Section: аналіз останніх джерелunclassified

Comparative experimental studies of the operation process of the inertial planetary mechanism of screw conveyors

Karetin¹,

Stukhliak²

2020

SBIFNTUOG

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The results of experimental studies of the technological process of the inertial safety clutch for two options and two cases of determining the braking torque of the output shaft: a combination with a reverse and a parasitic gear; combinations without reverse and with parasitic gear; combinations with reverse and without parasitic gear; combinations without reverse and without parasitic gear are given. The functional nature of the change in the brake torque of the output shaft has been investigated. The plan of the factorial experiment was chosen, the limit intervals or limit levels of variation (initial, or upper and final, or lower limit of change) of each individual input factor were set: the speed of the input shaft of the inertial safety clutch and the gear ratio. A histogram of non-approximated experimental data of the braking torque of the output shaft of the inertial safety clutch is constructed. On the basis of comparisons and analysis of graphical constructions of the diagram of the change in the braking torque of the output shaft of the inertial overload clutch for various combinations, it can be stated that: the process of operation of the inertial overload clutch using the reverse and with the parasitic gear provides a slight increase in the braking torque of the output shaft of the inertial overload clutch in on average by 3%; the process of operation of the inertial overload clutch without the use of reverse and with a parasitic gear practically does not provide an increase in the braking torque of the output shaft of the inertial overload clutch. On the basis of a comparative analysis, reasonably rational parameters of an inertial safety clutch at which its "stop" mode of operation is achieved.

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Section: аналіз останніх джерелunclassified

Comparative experimental studies of the operation process of the inertial planetary mechanism of screw conveyors

Karetin¹,

Stukhliak²

2020

SBIFNTUOG

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“…Second, small transmission reduces the vehicle weight. Third, zero gear ratio gap can change the speed ratio continuously at a certain range [4]. Meanwhile, the fuel efficiency of CVT vehicle can increase by 10%-15% and harmful emission substances in automobile exhaust decreases by at least 10% [5].…”

Section: Introductionmentioning

confidence: 99%

Optimization Transmission Efficiency with Driver Intention for Automotive Continuously Variable Transmission under Slip Mode

Han

Zhang

Fang

et al. 2021

Chin. J. Mech. Eng.

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This study proposes and experimentally validates an optimal integrated system to control the automotive continuously variable transmission (CVT) by Model Predictive Control (MPC) to achieve its expected transmission efficiency range. The control system framework consists of top and bottom layers. In the top layer, a driving intention recognition system is designed on the basis of fuzzy control strategy to determine the relationship between the driver intention and CVT target ratio at the corresponding time. In the bottom layer, a new slip state dynamic equation is obtained considering slip characteristics and its related constraints, and a clamping force bench is established. Innovatively, a joint controller based on model predictive control (MPC) is designed taking internal combustion engine torque and slip between the metal belt and pulley as optimization dual targets. A cycle is attained by solving the optimization target to achieve optimum engine torque and the input slip in real-time. Moreover, the new controller provides good robustness. Finally, performance is tested by actual CVT vehicles. Results show that compared with traditional control, the proposed control improves vehicle transmission efficiency by approximately 9.12%–9.35% with high accuracy.

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“…In 2019, CVT consolidated total sales have increased worldwide from 1.78 million in 2015 to 2.0 million in 2019. In the next 20 years, over 2.6 million vehicles are expected to be equipped with CVT after improvements on existing technology, as shown in Figure 1 [7]. However, at present, the fuel economy of a vehicle metal belt CVT cannot reach the expected transmission efficiency range of 75%-90%.…”

Section: Introductionmentioning

confidence: 99%

Optimization Transmission Efficiency with Driver Intention for Automotive Continuously Variable Transmission Under Slip Mode

Han

Zhang

Fang

et al. 2020

Preprint

View full text Add to dashboard Cite

This study proposes and experimentally validates an optimal integrated system to control the automotive continuously variable transmission (CVT) to achieve its expected transmission efficiency range. The control system framework consists of top and bottom layers. In the top layer, a driving intention recognition system is designed on the basis of fuzzy control strategy to determine the relationship between the driver intention and CVT target ratio at the corresponding time. In the bottom layer, a new slip state dynamic equation is obtained considering slip characteristics and its related constraints, and a clamping force bench is established. Innovatively, a joint controller based on model predictive control (MPC) is designed taking internal combustion engine torque and slip between the metal belt and pulley as optimization dual targets . A cycle is attained by solving the optimization target to achieve optimum engine torque and the input slip in real-time . Moreover, the new controller provides good robustness. Finally, performance is tested by actual CVT vehicles. Results show that compared with traditional control, the proposed control improves vehicle transmission efficiency by approximately 9.12%–9.35% with high accuracy.

show abstract

Formulation of intervibrator motion and development of a controller for a pulse-drive transmission

Cited by 6 publications

References 12 publications

Comparative experimental studies of the operation process of the inertial planetary mechanism of screw conveyors

Comparative experimental studies of the operation process of the inertial planetary mechanism of screw conveyors

Optimization Transmission Efficiency with Driver Intention for Automotive Continuously Variable Transmission under Slip Mode

Optimization Transmission Efficiency with Driver Intention for Automotive Continuously Variable Transmission Under Slip Mode

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