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System Development & Application
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App. Res. of Comp. Printed Article
Vol. 41, 2024 No. 1
200-205

Analog SAT solver based on improved continuous-time dynamic systems

Zhao Haijun1
Chen Huayue1
Cui Mengtian2
1. School of Computer Science, China West Normal University, Nanchong Sichuan 637009, China
2. School of Computer Science & Engineering, Southwest Minzu University, Chengdu 610041, China
DOI: 10.19734/j.issn.1001-3695.2023.04.0189

Abstract

This paper studied efficient solving of the Boolean satisfiability problem. Firstly, by analyzing the k-SAT problem and the deterministic continuous-time dynamical system based on the coupled ordinary differential equation form, this paper proposed an improved continuous-time dynamical system equation based on the time-delay information form to maintain the centralized search property. Then, it presented the analog design of three main components, namely, the signal dynamics circuit, the auxiliary variable circuit and the digital verification circuit, to implement the system equation. In the design of signal dynamics circuit, this paper designed a form of analog hardware to obtain higher performance, smaller area and lower power consumption. In the analog hardware design of the proposed auxiliary variable circuit and digital verification circuit, it achieved the goal of avoiding the gradient descent search falling into no solution and determining whether the solution of a given problem has been found. At the same time, it proposed two design schemes of alternative auxiliary variable circuit with reduced area and power consumption. The simulation results show that the proposed new analog hardware SAT solver is not only effective, but also has higher speedup performance and lower power consumption compared with the SAT solver implemented by only software algorithm and other hardware SAT solvers.

Foundation Support

四川省自然科学基金资助项目(2022NSFSC0536)
国家自然科学基金资助项目(12050410248)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2023.04.0189
Publish at: Application Research of Computers Printed Article, Vol. 41, 2024 No. 1
Section: System Development & Application
Pages: 200-205
Serial Number: 1001-3695(2024)01-030-0200-06

Publish History

[2023-09-12] Accepted Paper
[2024-01-05] Printed Article

Cite This Article

赵海军, 陈华月, 崔梦天. 基于改进连续时间动态系统的模拟SAT求解器 [J]. 计算机应用研究, 2024, 41 (1): 200-205. (Zhao Haijun, Chen Huayue, Cui Mengtian. Analog SAT solver based on improved continuous-time dynamic systems [J]. Application Research of Computers, 2024, 41 (1): 200-205. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.

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