@article{MAKHILLJEAS201813415557,
    title = {PI Controller Design Using Luenberger’s Observer},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {13},
    number = {4},
    pages = {993-997},
    year = {2018},
    issn = {1816-949x},
    doi = {jeasci.2018.993.997},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2018.993.997},
    author = {Yongho and},
    keywords = {Luenbergers observer,PI controller,non-linear,solenoid,disturbance,configured},
    abstract = {For precise position control of solenoid valves with strong non-linear characteristics it is essential
to respond to load fluctuations including non-linear terms. We study the method of estimating the state of
disturbance by considering load variation and non-linear term as disturbance and the method of applying it to
controller. By constructing the Luenberger’s observer with the disturbance state, the state of the observer is
included in the control input to perform feedback linearization and the PI controller can be configured to achieve
precise position control and this system obtains the robustness to adapt to the load variation. As a result, the
robustness of maintaining the target position by the adaptation of the constant load of 5 [N] with the position
error of the steady state within 0.1% was obtained.}
    }