1. In an electronic device, a method of generating a linear time-invariant model, comprising: providing a system model having a plurality of operating points; in response to a user input, specifying at least one event at which a linearization analysis of the system model is performed; starting a simulation of the system model; automatically determining one or more equilibrium operating conditions for the linearization analysis of the system model as the simulation of the system model is running; detecting an occurrence of the at least one event as the simulation of the system model is running; automatically performing the linearization analysis of the system model based on the detecting, the linearization analysis being performed using the determined one or more equilibrium operating conditions; and generating the linear time-invariant model based on output results of the linearization analysis of the system model, wherein the generated linear time-invariant model is saved in a storage device.