Title :
An efficient time step control method in transient simulation for DAE system
Author :
Jian Yao ; Tianshi Wang ; Roychowdhury, Jaijeet
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Abstract :
Adaptive time step control is very important or even crucial in transient simulation for the efficiency of a circuit simulator. Existing methods are mainly based on the formula of the local truncation error (LTE) for solving ordinary differential equations (ODEs), which is an approximation for the circuit simulator solving a system of nonlinear differential algebraic equations (DAEs). In this work, we derived the formula of LTE for DAE system and proposed a new time step control method. Experimental results show that the proposed method works well for industrial circuits.
Keywords :
adaptive control; circuit simulation; differential algebraic equations; nonlinear differential equations; DAE system; LTE; ODE; adaptive time step control; circuit simulator; industrial circuits; local truncation error; nonlinear differential algebraic equations; ordinary differential equations; transient simulation; Accuracy; Equations; Integrated circuit modeling; Least squares approximations; Mathematical model; RLC circuits; Transient analysis;
Conference_Titel :
Electronics, Circuits and Systems (ICECS), 2014 21st IEEE International Conference on
DOI :
10.1109/ICECS.2014.7049917
