ABSTRACT
Automotive mechatronic systems typically include (sub)systems and com ponents which operate in different energy domains: mechanical, electri cal, magnetic, hydraulic, and pneumatic. For example, a typical modem electronically-controlled automatic transmission includes mechatronic el ements transferring rotational domain power and torque (clutches, bands), hydraulic elements (valve body, conduits, valves), and electro-magnetic components such as solenoid actuators and different sensors (speed, pressure measurements). As such, this class of systems is well-suited for application of bond graph modeling techniques (Kamopp et al., 1990), which are especially effective in dealing with systems operating and interacting in different energy domains. In addition, the bond graphs and associated syntax mles can easily supply important information about the mechatronic system under
consideration, such as, for example, the existence of algebraic loops (Kamopp et al., 1990), and zero dynamics (Wu and Youcef-Toumi, 1993).
