Chiu, P.C. Cheng, Y.-S. Hsu, K.T. Hu, K.H. Huang, C.H. JACoW Geneva, Switzerland 978-3-95450-177-9 10.18429/JACoW-IBIC2016-MOPG11 English 59-62 MOPG11 feedback power-supply interface booster EPICS Contribution to a conference proceedings 2017 2017-02 http://dx.doi.org/10.18429/JACoW-IBIC2016-MOPG11 http://jacow.org/ibic2016/papers/mopg11.pdf Submicron orbit stability for a low emittance synchrotron light source are essential. Besides locating and removing the existing perturbations, active orbit feedback is applied to improve the orbit stability below sub-micron range from DC to a few hundreds of Hertz. Efforts to investigate orbit stability and stabilization at TPS will be addressed in this report.