Vehicle-use alternating current generator control system
First Claim
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1. Apparatus for controlling an electric generator for charging a battery of a vehicle, said apparatus comprising:
- means for sensing parameters indicative of respective operating states of said vehicle, of said battery, and of an electric load coupled to receive energy from said battery;
means for determining an operating state of said vehicle based on sensed operating parameters of said vehicles;
means for providing a plurality of control command voltage values corresponding to respective operating states of said vehicle;
a microcomputer for selecting one of said control command voltage values based on a determined operating state of said vehicle, and for generating a command voltage having said selected control command voltage value;
means for generating a target voltage for controlling an output voltage of said generator, said target voltage having a desired predetermined relationship to said command voltage;
means for switching an output voltage of said generator in response to said command voltage;
means for comparing said command voltage with an output voltage of said battery, and for generating a difference signal in response thereto; and
means responsive to said difference signal, for correcting said command voltage to compensate for deviation of an actual relationship between said target voltage and said command voltage, relative to said desired predetermined relationship.
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Abstract
A vehicle alternating-current generator control system comprising a voltage command unit for variably controlling a reference voltage according to the state of an internal combustion engine, and an arithmetic unit for storing the difference between a target generation voltage commanded by the voltage command unit and a battery voltage detected by a voltage detection circuit and adding a voltage corresponding to the voltage difference to a command voltage generated by the voltage command unit.
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Citations
26 Claims
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1. Apparatus for controlling an electric generator for charging a battery of a vehicle, said apparatus comprising:
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means for sensing parameters indicative of respective operating states of said vehicle, of said battery, and of an electric load coupled to receive energy from said battery; means for determining an operating state of said vehicle based on sensed operating parameters of said vehicles; means for providing a plurality of control command voltage values corresponding to respective operating states of said vehicle; a microcomputer for selecting one of said control command voltage values based on a determined operating state of said vehicle, and for generating a command voltage having said selected control command voltage value; means for generating a target voltage for controlling an output voltage of said generator, said target voltage having a desired predetermined relationship to said command voltage; means for switching an output voltage of said generator in response to said command voltage; means for comparing said command voltage with an output voltage of said battery, and for generating a difference signal in response thereto; and means responsive to said difference signal, for correcting said command voltage to compensate for deviation of an actual relationship between said target voltage and said command voltage, relative to said desired predetermined relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Method of controlling an electric generator for charging a battery of a vehicle, said method comprising the steps of:
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sensing parameters indicative of respective operating states of said vehicle, of said battery, and of an electric load coupled to receive energy from said battery; determining an operating state of said vehicle based on sensed operating parameters of said vehicles; providing a plurality of control command voltage values corresponding to respective operating states of said vehicle; selecting one of said command voltage values based on a determined operating state of said vehicle, and generating a command voltage having said selected control command voltage value; generating a target voltage for controlling an output voltage of said generator, said target voltage having a desired predetermined relationship to said command voltage; switching an output voltage of said generator in response to said command voltage; comparing said command voltage with an output voltage of said battery, and generating a difference signal in response thereto; and correcting said command voltage based on said difference signal, to compensate for deviation of an actual relationship between said target voltage and said command voltage, relative to said desired predetermined relationship. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification