抄録
This paper describes the design and simulation of the postural control system of a twin cycle which has twin wheels on a driving axis and a controlling arm suspended from the upper structure. The three-degree-of-freedom twin cycle is modeled as a wheel and an inverted pendulum with a controlling arm pivoted at its upper end. The controlling arm rotates to give a pendulum restoring moment. A nonlinear feedback control system for the model has been designed using a unique model matching method with which time varying feedback coefficients are computed for each sampling time by coinciding the poles of the characteristic equation of the model with those of a given stable system. Simulation of the control systems has been carried out on a personal computer. The inverted pendulum system can be stabilized quickly against given initial disturbances.