A generalized nonlinear extended state observer for multi-output Lipschitz systems

Pasand, Mohammad Mahdi Share; Ahmadi, Ail Akbar

doi:10.1016/j.ejcon.2023.100906

Cited by 2 publications

(1 citation statement)

References 25 publications

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“…The incorporation of an observer in the control system, as detailed by Share Pasand and Ahmadi [14], is a significant advancement in the field of microfluidic temperature control. It allows for the extension of control theory to complex systems where direct measurement is either impractical or impossible.…”

Section: State Observermentioning

confidence: 99%

Target Tracking Two Degrees of Freedom State Feedback Control for Continuous Flow Microfluidic Chips Temperature Controller

Jiang,

Liu,

Xue

et al. 2024

Processes

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Microfluidic chips represent a cutting-edge technology for manipulating fluids within micrometer-scale spaces and are gradually becoming a new favorite platform in life science research. Precise and fast zonal temperature control is essential for accelerating biological experiments. However, current multi-channel temperature controllers typically rely on multiple channel sets to achieve single set-point control, which results in discrepancies between the fluid temperature distribution and sensor temperature due to the distributed temperature field in the fluid channel. To estimate the actual temperature and implement gradient temperature control, this paper introduces an extension of the target tracking (TT) two degrees of freedom (2DOF) state feedback control (SFC) method, followed by a presentation of simulation and experimental results. Through comparisons with an enhanced PID system in both simulation and experimentation, the paper demonstrates an 8.96% reduction in the maximum temperature difference across different regions and a 27.89% decrease in the time taken to reach various temperatures. This solution effectively addresses the existing challenges in temperature control for microfluidic chips, offering a more precise and stable control within the desired temperature range.

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Section: State Observermentioning

confidence: 99%