Sliding Mode Control Using Fast Output Sampling for a Mine Sweeping Plough

For the severe nonlinearity and time-varied problems of controlled object existed in mine sweeping plough electro-hydraulic servo system of a weapon, this paper presents a discrete-time sliding mode control technique using fast output sampling. Fast output sampling enables arbitrary sliding mode design and an equivalent fast output feedback control. In practice the system states needed in the sliding mode method are sometimes difficult to obtain. FOS method, which makes use of only the output samples, is combined with sliding mode method to accommodate the incomplete system state information. Thus, the control approach is more practical and easy to implement. The method and its stabilization are examined under numerical simulations and the results show that the proposed method produces excellent results and multimodel robust stabilization is achieved.