Modeling and Simulation of Shaft Drive CVT: Study on Characteristic of Ratio Change Mechanism

Author

Itoh, Masahiko ; Hayasaka, Koji ; Yamanaka, Masashi

Author_Institution

Dept. of Mech. Eng., Miyagi Nat. Coll. of Technol.

fYear

2006

fDate

25-28 June 2006

Firstpage

979

Lastpage

983

Abstract

This paper deals with a modeling and a control technique for a ratio change mechanism of the shaft drive CVT. The ratio change mechanism is composed of a geared motor, spur gears and ball screws. The natural frequencies are calculated by using a 6-degree of freedom model of the mechanism. The principal natural frequency depends on a torsional stiffness of the output shaft of the geared motor. This ratio change mechanism is controlled by a velocity control loop using the PI action as a dynamical compensator. The interaction between the principal natural frequency and the proportional gain of the PI action is investigated. Further, the performance of this mechanism is also investigated by simulations on time responses. Simulations show satisfactory results

Keywords

PI control; angular velocity control; compensation; power transmission (mechanical); shafts; variable speed gear; 6-degree of freedom model; PI action; continuously variable automatic transmission; dynamical compensator; natural frequencies; ratio change mechanism; shaft drive CVT; time response simulations; torsional stiffness; velocity control loop; Axles; Fasteners; Frequency; Gears; Mechanical systems; Servomotors; Shafts; Traction motors; Velocity control; Vibrations; Ball Screw; CVT; Gear; Ratio Change; Traction Drive;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics and Automation, Proceedings of the 2006 IEEE International Conference on

Conference_Location

Luoyang, Henan

Print_ISBN

1-4244-0465-7

Electronic_ISBN

1-4244-0466-5

Type

conf

DOI

10.1109/ICMA.2006.257758

Filename

4026218