Probability Technique to Predict Power Demand of Excavator Group

A method is presented for determining the total power demand for a localized area where excavators such as shovels, draglines, and bucket-wheel excavators operate. It is based upon the synthesis of a probability distribution function developed from readily available and measurable parameters. Therefore, the results are a true reflection of real working conditions and are computationally efficient. The method is presented initially in theoretical terms. A set of basic density functions are processed and from these the total demand distribution is determined. The computer program is described and application of the proposed technique to practical examples is given.