Control system
First Claim
1. A control system for controlling an output of a controlled object to which is applied a periodic disturbance an amplitude of which periodically changes, by a control input, comprising:
- disturbance compensation value-storing means for storing a plurality of disturbance compensation values for compensating for the periodic disturbance, the disturbance compensation values having been set in advance in time series according to a result of prediction of a change in the amplitude of the periodic disturbance;
disturbance compensation value-selecting means for selecting, in timing of selection at a repetition period corresponding to 1/n (n is an integer not smaller than
2) of a repetition period of occurrence of the periodic disturbance, one disturbance compensation value corresponding to the timing of selection, from the stored disturbance compensation values; and
control input-calculating means for calculating the control input, with a predetermined control algorithm, according to the selected disturbance compensation value.
1 Assignment
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Accused Products
Abstract
A control system which is capable of compensating for and suppressing the influence of a periodic disturbance on a controlled object more quickly, even when the controlled object is subjected to the periodic disturbance the amplitude of which periodically changes, thereby enhancing the stability and the accuracy of control. The control system includes an ECU. The ECU calculates disturbance compensation values for compensating for a periodic disturbance by searching maps and tables, in timing of generation of each pulse of a CRK signal. The ECU calculates control inputs at a predetermined control period, with predetermined control algorithms, according to the disturbance compensation values read in at the control period, respectively.
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Citations
36 Claims
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1. A control system for controlling an output of a controlled object to which is applied a periodic disturbance an amplitude of which periodically changes, by a control input, comprising:
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disturbance compensation value-storing means for storing a plurality of disturbance compensation values for compensating for the periodic disturbance, the disturbance compensation values having been set in advance in time series according to a result of prediction of a change in the amplitude of the periodic disturbance; disturbance compensation value-selecting means for selecting, in timing of selection at a repetition period corresponding to 1/n (n is an integer not smaller than
2) of a repetition period of occurrence of the periodic disturbance, one disturbance compensation value corresponding to the timing of selection, from the stored disturbance compensation values; andcontrol input-calculating means for calculating the control input, with a predetermined control algorithm, according to the selected disturbance compensation value. - View Dependent Claims (5, 6, 7, 8, 9)
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2. A control system for controlling an output of a controlled object to which is applied a periodic disturbance an amplitude of which periodically changes, by a control input, comprising:
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disturbance compensation value-storing means for storing a plurality of disturbance compensation values for compensating for the periodic disturbance, the disturbance compensation values having been set in advance in time series according to a result of prediction of a change in the amplitude of the periodic disturbance; disturbance compensation value-selecting means for selecting, in timing of selection at a repetition period corresponding to 1/n (n is an integer not smaller than
2) of a repetition period of occurrence of the periodic disturbance, one disturbance compensation value corresponding to the timing of selection, from the stored disturbance compensation values;disturbance estimation value-calculating means for calculating a disturbance estimation value for compensating for a disturbance and modeling errors in the controlled object, with a predetermined estimation algorithm based on a model defining relationships between the disturbance estimation value, the control input, and the output of the controlled object; and control input-calculating means for calculating the control input, with a predetermined control algorithm, according to the selected disturbance compensation value.
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3. A control system for controlling an output of a controlled object to which is applied a periodic disturbance an amplitude of which periodically changes, by a control input, comprising:
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disturbance compensation value-storing means for storing a plurality of disturbance compensation values for compensating for the periodic disturbance, the disturbance compensation values having been set in advance in time series according to a result of prediction of a change in the amplitude of the periodic disturbance; disturbance compensation value-selecting means for selecting, in timing of selection at a repetition period corresponding to 1/n (n is an integer not smaller than
2) of a repetition period of occurrence of the periodic disturbance, one disturbance compensation value corresponding to the timing of selection, from the stored disturbance compensation values;model parameter-identifying means for identifying model parameters of a model defining relationships between the disturbance compensation value, the control input, and the output of the controlled object, with a predetermined identification algorithm; and control input-calculating means for calculating the control input, with a predetermined algorithm including a predetermined control algorithm based on the model, according to the identified model parameters and the selected disturbance compensation value.
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4. A control system for controlling an output of a controlled object to which is applied a periodic disturbance an amplitude of which periodically changes, by a control input, comprising:
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disturbance compensation value-storing means for storing a plurality of disturbance compensation values for compensating for the periodic disturbance, the disturbance compensation values having been set in advance in time series according to a result of prediction of a change in the amplitude of the periodic disturbance; disturbance compensation value-selecting means for selecting, in timing of selection at a repetition period corresponding to 1/n (n is an integer not smaller than
2) of a repetition period of occurrence of the periodic disturbance, one disturbance compensation value corresponding to the timing of selection, from the stored disturbance compensation values;amplitude correction value-calculating means for calculating an amplitude correction value for correcting an amplitude of the disturbance compensation value, with a predetermined algorithm based on a model defining relationships between the amplitude correction value, the disturbance compensation value, the control input, and the output of the controlled object; and control input-calculating means for calculating the control input, with a predetermined control algorithm, according to the calculated amplitude correction value and the selected disturbance compensation value.
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10. A control system for a moving part-driving mechanism which changes at least one of operation timing and an operation amount of a moving part of an internal combustion engine, and to which is applied a periodic disturbance an amplitude of which periodically changes along with rotation of a crankshaft of the engine, comprising:
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disturbance compensation value-storing means for storing a plurality of disturbance compensation values for compensating for the periodic disturbance, the disturbance compensation values having been set in advance according to a result of prediction of a change in amplitude of the periodic disturbance caused by the rotation of the crankshaft; disturbance compensation value-selecting means for selecting, in timing of selection corresponding to each rotation of the crankshaft of the engine through a predetermined angle, a disturbance compensation value corresponding to the timing of selection from the stored disturbance compensation values; and control input-calculating means for calculating a control input for control of the moving part-driving mechanism, with a predetermined control algorithm, according to the selected disturbance compensation value. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification