硕士学位论文
Abstract
Currently, more than 90% vehic les are related to electronic control techno logy
on techno logica l innovation; therefore, improving usability of the e lectronic contro
l syste m is one of the key research and development of vehic le. Transmiss ion syste
mo f plays a key role which d irectly determines economy, power, reliability and co
mfort of ve hic le. Mechanica l automatic transmiss ion AMT started shifting contro l r
equires not only a smooth start without impact and minimizes friction clutc h slip, b
ut also fully reflects the driver's intention.It is d iffic ult to realize the clutch automa
tic control due to clutc h control proble m with nonlinear dynamic, t ime-varying, str
ong coupling and difficult modeling features.
In this artic le, during the starting and shifting process of AMT vehic le, clutch
contro l is not accurate, and easily lead ing to key problems, suc h as serious wear of
clutch and larger impact vehicles. With AMT clutch as the research object, starting
and shifting quality as the goal, in order to improve the design releva nt contro l
strategy. Controller can be divided into decis ion-making le vel contro ller and
executive level controller, inte lligent contro l technology is used in decision- mak ing
level controller, through that driver's intentions, vehic le running status and the
vehic le traffic conditio ns are identified, control scheme of the actuator is
determined based on the contro l strategy. In Executive level contro ller, motor drive
actuator is applied to contro l to complete control goal fast and accurately. The
princ iple of c lutc h automatic joint is stud ied in the process of starting, in order to
realize the clutch "fast，slow and fast" jo int rule, a fuzzy adaptive control method is
proposed in this paper. Firstly, the fuzzy contro l is used to concretely analyze the
uncertain parameters of clutch contro l problem, and then the adaptive contro l theory
is applied to modify the fuzzy control r ules with the input parameters as the control
object. Simulatio n model is establis hed through ADAMS software and
MATLAB/Simulink software, the proposed clutc h fuzzy adaptive contro l strategy is
analyzed with the origina l fuzzy contro l strategy. The effectiveness and the
feasibility are verified.
Shift control is another important aspect of AMT vehicle control, in this paper，
analyzes the characteristics of the optima l s hift schedule is analyzed . The improved
the shift qua lit y of contro l method of clutch fuzzy se lf-tuning PID is stud ied. The
