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HYBRID PREDICTOR, HYBRID PREDICTION METHOD, AND SYSTEM FOR AND METHOD OF CONTROLLING PROCESSES USING THE HYBRID PREDICTOR AND HYBRID PREDICTION METHOD
HYBRID PREDICTOR, HYBRID PREDICTION METHOD, AND SYSTEM FOR AND METHOD OF CONTROLLING PROCESSES USING THE HYBRID PREDICTOR AND HYBRID PREDICTION METHOD
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机译:混合预测器,混合预测方法以及使用混合预测器和混合预测方法控制过程的系统和方法
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A HYBRID PREDICTOR (100A) FOR PREDICTING THE OUTPUT OF A PROCESS (400), AND A HYBRID PREDICTION METHOD USING THE HYBRID PREDICTOR. ALSO, A SYSTEM FOR AND A METHOD OF CONTROLLING A PROCESS USING THE HYBRID PREDICTOR AND HYBRID PREDICTION METHOD ARE PROVIDED. IN ORDER TO OBTAIN A SHIFTED PREDICTION VECTOR (140A) AND STEP RESPONSE COEFFICIENTS, THE HYBRID PREDICTOR USES A PARAMETER MODEL (1 1 0) WHICH CAN BE UPDATED IN ACCORDANCE WITH A VARIATION IN THE PROCESS. THE CONTROL METHOD INCLUDES THE STEPS OF PREDICTING PROCESS OUTPUT SIGNALS GENERATED IN A PREDICTION HORIZON, BASED ON INPUT SIGNALS APPLIED TO THE PROCESS, CORRECTING THE PREDICTED VALUES, BASED ON OUTPUT SIGNAL VALUES MEASURED AT THE NEXT SCAN, COMPARING THE CORRECTED PREDICTION VALUE WITH A REFERENCE VALUE (200) TO DERIVE AN ERROR VECTOR, CALCULATING A CONTROL SIGNAL TO MINIMIZE THE ERROR VECTOR, AND APPLYING THE CONTROL SIGNAL TO THE PROCESS. THE HYBRID PREDICTOR (100A) IS CHARACTERIZED BY AN ADDITION OF A MODEL PARAMETER ESTIMATOR (110) AND A MODEL RESPONSE CONVERTER (120). IN THIS HYBRID PREDICTOR, A PREDICTION VECTOR, WHICH IS INDICATIVE OF THE LENGTH OF A PREDICTION HORIZON, IS DIRECTLY CALCULATED. ACCORDINGLY, IT IS POSSIBLE TO REDUCE A REQUIRED MEMORY CAPACITY WHILE UPDATING MODEL RESPONSE COEFFICIENTS IN ACCORDANCE WITH A VARIATION IN THE PROCESS BY THE MODEL PARAMETER ESTIMATOR (1 10). THUS, AN ADAPTIVE PREDICTION CAN BE ACHIEVED. (FIG. 3)
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