Dynamic Load Analysis - Automotive
Dynamic load analysis has always been an important part of electrical system design. Understanding the transient behavior of a system as different loads are switched in and out during system operation is critical to obtaining proper component sizing and verifying overall system functionality.
For the automotive electrical system designer, this problem is further complicated by the presence of non-electrical loads (motors, solenoids, actuators, etc…) common in many systems. Traditional SPICE circuit simulation tools can adequately simulate the electrical content, but are incapable of effectively modeling non-electrical content. With SPICE the only method of model extensibility is an electrical equivalent macromodel. At best these macromodels are a simple approximation, and at worst they can be a confusing array of controlled sources and cryptic feedback paths which can only be deciphered by the original model developer.
Using VHDL-AMS within a math-based computer aided prototyping environment like SystemVision™, the engineer can easily include accurate descriptions of multiple technologies within a complete system simulation. For the automotive electrical system design engineer, this provides a mechanism for properly sizing the various components not only for steady state operation, but also for dynamic conditions that occur when complex (non-electrical) loads are are present in the system. In addition, any legacy electrical SPICE models can be automatically included as part of the simulation, if needed. The modeling capabilities of VHDL-AMS combined with the math-based computer-aided prototyping environment of SystemVision provide the engineer with the right tool for the job and allow you to concentrate on the task at hand.