IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0960117
(2001-09-20)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Westman, Champlin & Kelly, P.A.
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인용정보 |
피인용 횟수 :
90 인용 특허 :
247 |
초록
An apparatus and a method of monitoring a battery in an automotive vehicle are provided. An output is provided which can be a relative output as a function of minimum and maximum parameters of the battery.
대표청구항
▼
An apparatus and a method of monitoring a battery in an automotive vehicle are provided. An output is provided which can be a relative output as a function of minimum and maximum parameters of the battery. the steps consisting in: calculating, according to said estimations, the control voltage t
An apparatus and a method of monitoring a battery in an automotive vehicle are provided. An output is provided which can be a relative output as a function of minimum and maximum parameters of the battery. the steps consisting in: calculating, according to said estimations, the control voltage to be applied to the motor, and deriving the triggering angle of the triac from this calculated voltage. 19. A method for the digital control of a universal motor according to claim 3, comprising the steps consisting in: calculating, according to said estimations, the control voltage to be applied to the motor, and deriving the triggering angle of the triac from this calculated voltage. 20. A method for the digital control of a universal motor according to claim 5, comprising the steps consisting in: calculating, according to said estimations, the control voltage to be applied to the motor, and deriving the triggering angle of the triac from this calculated voltage. 21. A method for the digital control of a universal motor according to claim 8, comprising the steps consisting in: calculating, according to said estimations, the control voltage to be applied to the motor, and deriving the triggering angle of the triac from this calculated voltage. 22. A method for the digital control of a universal motor according to claim 12, comprising the steps consisting in: calculating, according to said estimations, the control voltage to be applied to the motor, and deriving the triggering angle of the triac from this calculated voltage. n channels which are perpendicular to the rotation of the wheel and are open at the sides of the wheel. of switches and a primary winding of the step-up transformer. 3. The apparatus of claim 1, wherein the filter is disposed between a secondary winding of the step-up transformer and the CCFL. 4. The apparatus of claim 1, wherein the filter is a second order filter that includes an inductance component and a capacitance component. 5. The apparatus of claim 4, wherein the transformer provides the inductance component. 6. An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal for driving a cold cathode fluorescent lamp (CCFL), comprising: (a) a H-bridge network of a plurality of switches for generating an AC signal from a DC signal coupled to the network of the plurality of switches, the AC signal being generated by a first portion of the network of the plurality of switches periodically opening and closing opposite to the periodic opening and closing of a second portion of the network of the plurality of switches, said first portion of the network being diagonally opposed to said second portion of the network; (b) filtering means being coupled between the network of the plurality of switches and the CCFL, the filtering means filtering the AC signal delivered to the CCFL; and (c) a controller for periodically opening and closing portions of the network of the plurality of switches generally at a resonant frequency of the filtering means, so that electrical power is provided for driving the CCFL under a range of voltages provided by the DC signal, wherein the filtering meanssuppresses a harmonic signal associated with the AC signal. 7. An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal for driving a cold cathode fluorescent lamp (CCFL), comprising: (a) a H-bridge network of a plurality of switches for generating an AC signal from a DC signal coupled to the network of the plurality of switches, the AC signal being generated by a first portion of the network of the plurality of switches periodically opening and closing opposite to the periodic opening and closing of a second portion of the network of the plurality of switches, said first portion of the network being diagonally opposed to said second portion of the network; (b) filtering means being coupled between the network of the plurality of switches and the CCFL, the filtering means filtering the AC signal delivered to the CCFL; and (c) a controller for periodically opening and closing portions of the network of the plurality of switches generally at a resonant frequency of the filtering means, so that electrical power is provided for driving the CCFL under a range of voltages provided by the DC signal, wherein the filtering means smoothes a waveform of the AC signal. 8. The apparatus of claim 7, wherein the zero crossing detector tracks the frequency response of the filtering means when the AC signal is driving the CCFL, the zero crossing detector providing an indication to the controller when the resonant frequency has moved from one value to another value. 9. An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal for driving a cold cathode fluorescent lamp (CCFL), comprising: (a) a H-bridge network of a plurality of switches for generating an AC signal from a DC signal coupled to the network of the plurality of switches, the AC signal being generated by a first portion of the network of the plurality of switches periodically opening and closing opposite to the periodic opening and closing of a second portion of the network of the plurality of switches, said first portion of the network being diagonally opposed to said second portion of the network; (b) filtering means being coupled between the network of the plurality of switches and the CCFL, the filtering means filtering the AC signal delivered to the CCFL; and (c) a controller for periodically opening and closing portions of the network of the plurality of switches generally at a resonant frequency of the filtering means, so that electrical power is provided for driving the CCFL under a range of voltages provided by the DC signal, wherein the DC signal includes a range of selectable voltages. 10. The apparatus of claim 9, further comprising a control for dimming the amount of light emitted by the CCFL, the selection of the control causing the AC signal driving the CCFL to be varied in relation to a change in a voltage across a capacitor. 11. An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal for driving a cold cathode fluorescent lamp (CCFL), comprising: (a) a H-bridge network of a plurality of switches for generating an AC signal from a DC signal coupled to the network of the plurality of switches, the AC signal being generated by a first portion of the network of the plurality of switches periodically opening and closing opposite to the periodic opening and closing of a second portion of the network of the plurality of switches, said first portion of the network being diagonally opposed to said second portion of the network; (b) filtering means being coupled between the network of the plurality of switches and the CCFL, the filtering means filtering the AC signal delivered to the CCFL; and (c) a controller for periodically opening and closing portions of the network of the plurality of switches generally at a resonant frequency of the filtering means, so that electrical power is provided for driving the CCFL under a range of voltages provided by the DC signal, wherein the controller implements logical instructions, comprising: (a) determining an undervoltage condition at the CCFL; and if true (b) causing the AC signal to not drive the CCFL. 12. An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal for driving a cold cathode fluorescent lamp (CCFL), comprising: (a) a H-bridge network of a plurality of switches for generating an AC signal from a DC signal coupled to the network of the plurality of switches, the AC signal being generated by a first portion of the network of the plurality of switches periodically opening and closing opposite to the periodic opening and closing of a second portion of the network of the plurality of switches, said first portion of the network being diagonally opposed to said second portion of the network; (b) filtering means being coupled between the network of the plurality of switches and the CCFL, the filtering means filtering the AC signal delivered to the CCFL; and (c) a controller for periodically opening and closing portions of the network of the plurality of switches generally at a resonant frequency of the filtering means, so that electrical power is provided for driving the CCFL under a range of voltages provided by the DC signal, wherein the controller implements logical instructions, comprising: (a) determining if a thermal overload condition is occurring; and if so (b) causing the AC signal to not drive the CCFL. 13. An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal for driving a cold cathode fluorescent lamp (CCFL), comprising: (a) a H-bridge network of a plurality of switches for generating an AC signal from a DC signal coupled to the network of the plurality of switches, the AC signal being generated by a first portion of the network of the plurality of switches periodically opening and closing opposite to the periodic opening and closing of a second portion of the network of the plurality of switches, said first portion of the network being diagonally opposed to said second portion of the network; (b) filtering means being coupled between the network of the plurality of switches and the CCFL, the filtering means filtering the AC signal delivered to the CCFL; and (c) a controller for periodically opening and closing portions of the network of the plurality of switches generally at a resonan t frequency of the filtering means, so that electrical power is provided for driving the CCFL under a range of voltages provided by the DC signal, wherein the controller implements logical instructions, comprising: (a) determining if a current to the CCFL has exceeded a predetermined maximum current; and if true (b) causing the AC signal to not drive the CCFL. 14. An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal for driving a cold cathode fluorescent lamp (CCFL), comprising: (a) a H-bridge network of a plurality of switches for generating an AC signal from a DC signal coupled to the network of the plurality of switches, the AC signal being generated by a first portion of the network of the plurality of switches periodically opening and closing opposite to the periodic opening and closing of a second portion of the network of the plurality of switches, said first portion of the network being diagonally opposed to said second portion of the network; (b) filtering means being coupled between the network of the plurality of switches and the CCFL, the filtering means filtering the AC signal delivered to the CCFL; and (c) a controller for periodically opening and closing portions of the network of the plurality of switches generally at a resonant frequency of the filtering means, so that electrical power is provided for driving the CCFL under a range of voltages provided by the DC signal, wherein the periodic opening and closing of portions of the network of the plurality of switches generally at a resonant frequency of the filtering means, further comprising a power phase for the portion of the network of the plurality switches and another power phase for the other portion of the network of the plurality of switches, so that each power phase generates an opposite waveform of the AC signal used to drive the CCFL. 15. The apparatus of claim 14, further comprising a rest phase after the power phase and another rest phase after the other power phase, the rest phase and the other rest phase enabling the controller to reduce the amount of electrical power driving the CCFL. 16. The apparatus of claim 14, wherein the opposite waveforms for each power phase have a symmetrical shape so that the formation of a harmonic signal in the AC signal is suppressed. 17. An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal for driving a cold cathode fluorescent lamp (CCFL), comprising: (a) a H-bridge network of a plurality of switches for generating an AC signal from a DC signal coupled to the network of the plurality of switches, the AC signal being generated by a first portion of the network of the plurality of switches periodically opening and closing opposite to the periodic opening and closing of a second portion of the network of the plurality of switches, said first portion of the network being diagonally opposed to said second portion of the network; (b) filtering means being coupled between the network of the plurality of switches and the CCFL, the filtering means filtering the AC signal delivered to the CCFL; and (c) a controller for periodically opening and closing portions of the network of the plurality of switches generally at a resonant frequency of the filtering means, so that electrical power is provided for driving the CCFL under a range of voltages provided by the DC signal, wherein the controller periodically opens and closes portions of the network of the plurality of switches based on a trailing edge of a current waveform of the AC signal, so that a reduced amount of power is delivered to the CCFL. 18. An apparatus for converting a direct current (DC) signal into an alternating current (AC) signal for driving a cold cathode fluorescent lamp (CCFL), comprising: (a) a H-bridge network of a plurality of switches for generating an AC signal from a DC signal coupled to the network of the plurality of switches, the AC signa
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