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This article introduces a soft pneumatic pressure regulation system with self\u2010rhythmic characteristics and simple structure. In this system, the hose generates self\u2010excited oscillations due to jet force, which realizes the transformation of constant pressure to periodically varying pressure. This mechanism allows soft robots to perform rhythmic movements. A mathematical model is developed to describe the self\u2010excited oscillations of the jet hose. Numerical simulations are conducted to analyze the impact of various parameters on system oscillations. The system operates under pressures from 90 to 150\u2009kPa. By adjusting the pressure, hose length, and jet hole diameter, the oscillation frequency of the pressure can be tuned between 5.9 and 11.1\u2009Hz. The comparison between simulation results and experimental data verifies the correctness of the mathematical model. Finally, a soft robot capable of crawling based on anisotropic friction is designed and fabricated. Powered solely by the soft pneumatic pressure regulation system, the robot achieves self\u2010rhythmic crawling. By adjusting the air source pressure, hose length, and jet hole diameter, the robot's crawling speed can be effectively controlled, ranging from 2.5 to 6.8\u2009mm\u2009s<jats:sup>\u22121<\/jats:sup>.<\/jats:p>","DOI":"10.1002\/aisy.202401003","type":"journal-article","created":{"date-parts":[[2025,5,11]],"date-time":"2025-05-11T15:48:44Z","timestamp":1746978524000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Self\u2010Rhythmic Soft Pneumatic Pressure Regulation System Based on Self\u2010Excited Oscillation of Jet Hose"],"prefix":"10.1002","volume":"7","author":[{"given":"Fenglin","family":"Han","sequence":"first","affiliation":[{"name":"College of Mechanical and Electrical Engineering Central South University  Changsha 410083 China"},{"name":"State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South University  Changsha 410083 China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-9626-7015","authenticated-orcid":false,"given":"Huang","family":"Xiong","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering Central South University  Changsha 410083 China"}]},{"given":"Qixin","family":"Li","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering Central South University  Changsha 410083 China"}]},{"given":"Jing","family":"Yang","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering Central South University  Changsha 410083 China"}]},{"given":"Chunli","family":"He","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering Central South University  Changsha 410083 China"}]},{"given":"Xueyi","family":"Guo","sequence":"additional","affiliation":[{"name":"School of Metallurgy and Environment Central South University  Changsha 410083 China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-1874-2711","authenticated-orcid":false,"given":"Zhi","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering Central South University  Changsha 410083 China"},{"name":"State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South University  Changsha 410083 China"}]}],"member":"311","published-online":{"date-parts":[[2025,5,11]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"crossref","unstructured":"D.Rus M. 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