Computer reliability analysis of coal-cleaning distribution curves

Three types of distribution curve error are defined, i.e., the fitting deviation, the real deviation and the test error. Since the absolute distribution curve is never known, both the real deviation and the test error are unknown. Only the fitting deviation can be calculated and is a measure of the difference between a calculated distribution curve and the experimental data. However, the real deviation is of primary importance in evaluating the reliability of calculated distribution curves. This paper uses a microcomputer to simulate absolute distribution curves and obtains numerical relationships between the real deviation, the fitting deviation and the test error.More than 500 tests using a microcomputer show that a relationship exists between the fitting deviation, test error and real deviation. In most cases, the fitting deviation and the real deviation are close to each other. Both the fitting and the real deviation are smaller than the test error if the selected model is suitable.