Input force estimation using an inverse structural filter

摘要: A new method for the estimation of structural input forces is presented. The time domain technique uses a non-causal inverse filter (ISF) which takes as input, response data, and returns, output, an estimate forces. This allows pseudo-real-time non-collocated sensor/actuator pairs multi-input/multi-output (MIMO) systems. formulation systems that possess unstable transmission zeros hence are non-minimum phase. Input force such difficult due to nature system. theory development ISF discussed applicability derived from linear system theory. Two examples discussed. first single-input/single-output (SISO) one-dimensional spring/mass chain in remote accelerometer used at one end. In second example, six docking moments between Space Shuttle Russian MIR Station during simulation.