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【期刊论文】Component-based hardware/software co-verification for building trustworthy embedded systems*
杨国武, Fei Xiea, *, Guowu Yanga, Xiaoyu Songb
The Journal of Systems and Software 80(2007)643-654,-0001,():
-1年11月30日
We present a novel component-based approach to hardware/software co-verification of embedded systems using model checking. Embedded systems are pervasive and often mission-critical, therefore, they must be highly trustworthy. Trustworthy embedded systems require extensive verification. The close interactions between hardware and software of embedded systems demand co-verification. Due to their diverse applications and often strict physical constraints, embedded systems are increasingly component-based and include only the necessary components for their missions. In our approach, a component model for embedded systems which unifies the concepts of hardware IPs (i.e., hardware components) and software components is defined. Hardware and software components are verified as they are developed bottom-up. Whole systems are co-verified as they are developed top-down. Interactions of bottom-up and top-down verification are exploited to reduce verification complexity by facilitating compositional reasoning and verification reuse. Case studies on a suite of networked sensors have shown that our approach facilitates major verification reuse and leads to order-of-magnitude reduction on verification complexity.
Component-based embedded systems, Component model, Components, Model checking, Compositional reasoning, Hardware/, software co-verification, Verification reuse
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【期刊论文】A NEW APPROACH TO TERMINAL SLIDING MODE CONTROL DESIGN
杨国武, Yiguang Hong, Guowu Yang, Daizhan Cheng, and Sarah Spurgeon
Asian Journal of Control, Vol. 7, No.2, pp. 177-181, June 2005,-0001,():
-1年11月30日
In this paper, terminal sliding mode control design is considered. A control method, different from many existing terminal sliding model control design methods, is proposed based on a new switching law and continuous finite-time control ideas. Then terminal sliding mode control laws are constructed for some classes of nonlinear systems.
Terminal sliding mode control,, finite-time convergence,, nonsmooth feedback.,
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