Dynamic behavior and vibration mitigation of a spatial tensegrity beam

The present study focuses on employing an efficient control strategy to vibration mitigation for a spatial tensegrity beam composing of five typical quadruplex units. The active control approach is implemented in order to maintain the structural integrity and stability under dynamic loadings. Linear-quadratic regulator (LQR) is applied based on various actuator placement scenarios. Five scenarios are carried out for the control strategy, i.e. struts, cables and combination by change actuator positions in different regions. Various actuator placement schemes together with the system response are compared for all simulated scenarios by setting control parameters of LQR. The outcome of the proposed study highlights the significant reduction of dynamical response compared to the uncontrolled performance, succeeding in the tensegrity system control, even at low cost with only 5.26% (4 out of 76) elements controlled.