• Yoyong Arfiadi Atma Jaya Yogyakarta University, Yogyakarta, Indonesia


Active control systems have been used to reduce structural response due to earthquake excitations. Several control algorithms have been proposed including linear quadratic regulator and bang-bang control law. While bang-bang control algorithm outperforms linear quadratic regulator in terms of the control
energy’s imitation, it switches the controller from maximum to maximum capacity in one direction to another direction, which may not be appropriate to some devices. In this paper a modified bang-bang type control law which is continuous but bounded in control capacity is investigated. The control law considered
in this paper utilizes a hyperbolic tangent function to imitate a bang-bang type controller, thence it is a continuous but bounded controller. A parametric study of weighting matrix that influences the control effectiveness is investigated in this paper. The choice of the weighting matrix is important such that the control energy approaches the maximum energy but avoid the switching effect. A simulation to a three story building utilizing active bracing system is carried out. From the simulation it can be shown that the effective controllers are the ones that the value of the hyperbolic tangent of the argument approaches 1.

How to Cite
ARFIADI, Yoyong. PARAMETRIC STUDY OF MODIFIED CONTINUOUS BANG-BANG CONTROLLER. EACEF - International Conference of Civil Engineering, [S.l.], v. 1, p. 051, aug. 2011. Available at: <>. Date accessed: 19 may 2024.
Group of Structural and Construction Engineering