[Show abstract][Hide abstract] ABSTRACT: Accurate estimating or measuring the intake manifold absolute pressure plays an important role in automobile engine control. In order to achieve the real-time estimation of the absolute pressure, the high accuracy and high speed processing ability are required for automobile engine control systems. Therefore, in this paper, an analog method is discussed and a fully integrated analog circuit is proposed to simulate automobile intake systems. Furthermore, a novel behavioral macromodeling is proposed for the analog circuit design. With the analog circuit, the intake manifold absolute pressure, which plays an important role for the effective automobile engine control, can be accurately estimated or measured in real time.
IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences 04/2007; DOI:10.1093/ietfec/e90-a.4.732 · 0.23 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: A new circuit structure for a CMOS four-quadrant analog multiplier is presented. In this circuit, the active feedback technique is used to obtain high linearity and wide input dynamic range. The simulation results show that the proposed multiplier can offer plusmn1.8V input dynamic range for a plusmn2.5V supply voltage, which is much larger than the conventional CMOS analog multipliers
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on; 01/2007
[Show abstract][Hide abstract] ABSTRACT: Accurately estimating or measuring intake manifold absolute pressure plays an important role in automobile engine control. In order to achieve the real-time estimation of the absolute pressure, the high accuracy and high speed processing ability is commonly required for the automobile engine control system. However, the conventional numerical methods cannot satisfy the requirement of the strict time needed by high speed automobile engine. Therefore, in this paper, an analog LSI method is proposed to estimate this pressure in real time. Furthermore, a novel behavioral macromodel is given for further analog LSI design. Compared with conventional numerical method, the proposed method is highly advantageous in speed to simulate the automobile engine intake system
International Symposium on Circuits and Systems (ISCAS 2006), 21-24 May 2006, Island of Kos, Greece; 01/2006