IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0156146
(2008-05-30)
|
등록번호 |
US-8485148
(2013-07-16)
|
우선권정보 |
DE-10 2007 025 619 (2007-06-01) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
16 |
초록
▼
A method, device, and control unit for controlling an actuator in open loop, particularly for a valve, preferably for a gas-exchange valve of an internal combustion engine, having at least one control valve for opening the valve and one control valve for closing the valve, each of the control valves
A method, device, and control unit for controlling an actuator in open loop, particularly for a valve, preferably for a gas-exchange valve of an internal combustion engine, having at least one control valve for opening the valve and one control valve for closing the valve, each of the control valves being capable of being driven by at least one drive pulse whose duration determines a position on the positioning travel of the valve. The valve is opened/closed in one lift and/or a plurality of partial lifts and at least one drive pulse is assigned to each lift and/or each partial lift, and the valve is assigned at least one transducer which generates a signal that discloses values of a discrete positioning travel of the valve and of an assigned time and/or of a discrete instant and of an assigned positioning travel. The method for controlling the actuator includes: a. Starting of a drive pulse having a setpoint duration of the drive pulse for opening and/or closing the valve,b. Generating at least one signal, andc. Correcting the setpoint duration of the drive pulse and/or of a following drive pulse assigned to the lift and/or to a partial lift, in accordance with the signal.
대표청구항
▼
1. A method for controlling an actuator for a gas-exchange valve of an internal combustion engine, the internal combustion engine having at least one control valve for opening the valve and one control valve for closing the valve, each of the control valves being capable of being driven by at least
1. A method for controlling an actuator for a gas-exchange valve of an internal combustion engine, the internal combustion engine having at least one control valve for opening the valve and one control valve for closing the valve, each of the control valves being capable of being driven by at least one drive pulse whose duration determines a positioning travel of the valve, the valve being opened or closed, in one lift or a plurality of partial lifts, and at least one drive pulse being assigned to each lift or each partial lift, and the valve being assigned at least one transducer which generates at least one signal that discloses at least one of a discrete travel position of the valve at a specified time and a discrete instant at a specified travel position, the method comprising: starting a drive pulse having a setpoint duration of the drive pulse for at least one of opening and closing the valve;generating the at least one signal;correcting in accordance with the at least one signal the setpoint duration of at least one of: i) a current drive pulse, and ii) a following drive pulse assigned to a partial lift, wherein each partial lift is one stage in a multi-staged opening or closing of the valve;ascertaining repeatedly or continually a pair of values, including a mutually assigned instant and a positioning travel, and correcting the setpoint duration of a drive pulse based on at least one pair of ascertained values; andascertaining a velocity of the valve at the instant, wherein at an instant during a drive pulse of the at least one control valve, a driving duration of the drive pulse is corrected in accordance with a corrected setpoint value. 2. The method as recited in claim 1, wherein the at least one signal is generated for each at least one of a lift and partial lift, and the duration of the drive pulse is corrected in accordance with the signal. 3. The method as recited in claim 1, further comprising: ascertaining, based on the at least one signal, an associated travel position of the valve at at least one discrete instant. 4. The method as recited in claim 3, wherein the instant lies between drive pulses for two successive partial lifts of the valve. 5. The method as recited in claim 3, wherein the instant lies during a drive pulse of the at least one control valve for at least one of a lift and a partial lift of the valve. 6. The method as recited in claim 1, wherein the setpoint duration of a drive pulse is corrected on the basis of at least one of the discrete instant and the discrete travel position of the valve. 7. The method as recited in claim 1, further comprising: determining at least one of i) a deviation of the discrete travel position from a setpoint value or anticipated value, or ii) a deviation of the discrete instant from a setpoint value or anticipated value, wherein the setpoint duration of a drive pulse is corrected based on the deviation. 8. The method as recited in claim 1, further comprising: ascertaining repeatedly or continually a pair of values, including a mutually assigned instant and a travel position, and correcting of the setpoint duration of a drive pulse based on at least one pair of ascertained values. 9. The method as recited in claim 8, further comprising: ascertaining a velocity of the valve at the instant. 10. The method as recited in claim 1, wherein the setpoint duration of the current drive pulse is corrected more than once over a duration of the current drive pulse. 11. A method for controlling an actuator for a gas-exchange valve of an internal combustion engine, the internal combustion engine having at least one control valve for opening the valve and one control valve for closing the valve, each of the control valves being capable of being driven by at least one drive pulse whose duration determines a positioning travel of the valve, the valve being opened or closed, in one lift or a plurality of partial lifts, and at least one drive pulse being assigned to each lift or each partial lift, and the valve being assigned at least one transducer which generates at least one signal that discloses at least one of a discrete travel position of the valve at a specified time and a discrete instant at a specified travel position, the method comprising: starting a drive pulse having a setpoint duration of the drive pulse for at least one of opening and closing the valve;generating the at least one signal;correcting in accordance with the at least one signal the setpoint duration of at least one of: i) the drive pulse, ii) a following drive pulse assigned to a partial lift, wherein each partial lift is one stage in a multi-staged opening or closing of the valve;ascertaining, based on the at least one signal, an associated travel position of the valve at at least one discrete instant, wherein the instant lies between drive pulses for two successive partial lifts of the valve;ascertaining repeatedly or continually a pair of values, including a mutually assigned instant and a positioning travel, and correcting the setpoint duration of a drive pulse based on at least one pair of ascertained values; andascertaining a velocity of the valve at the instant, wherein at an instant during a drive pulse of the at least one control valve, a driving duration of the drive pulse is corrected in accordance with a corrected setpoint value. 12. The method as recited in claim 1, wherein the transducer, at at least one discrete travel position of the valve, generates an event from which an associated instant is ascertained. 13. The method as recited in claim 12, wherein the event is a signal edge of an electrical signal or an electrical pulse. 14. A method for controlling an actuator for a gas-exchange valve of an internal combustion engine, the internal combustion engine having at least one control valve for opening the valve and one control valve for closing the valve, each of the control valves being capable of being driven by at least one drive pulse whose duration determines a positioning travel of the valve, the valve being opened or closed, in one lift or a plurality of partial lifts, and at least one drive pulse being assigned to each lift or each partial lift, and the valve being assigned at least one transducer which generates a signal that discloses values of a discrete positioning travel of the valve and of an assigned time or values of a discrete instant and of an assigned positioning travel, the method comprising: starting a drive pulse having a setpoint duration of the drive pulse for at least one of opening and closing the valve;generating at least one signal;correcting in accordance with the signal the setpoint duration of at least one of: i) the drive pulse, ii) a following drive pulse assigned to the lift, and iii) a following drive pulse assigned to a partial lift;ascertaining repeatedly or continually a pair of values, including a mutually assigned instant and a positioning travel, and correcting of the setpoint duration of a drive pulse based on at least one pair of ascertained values; andascertaining a velocity of the valve at the instant,wherein: at an instant during a drive pulse of the at least one control valve, a driving duration of the drive pulse is corrected in accordance with a corrected setpoint value, which is ascertained according to the formula tm1_corr=t—i−t_start+(l_setpoint−s—i)/v—i−dt—rt_eff;t_start is a starting instant of the drive pulse;l_setpoint is at least one of a setpoint value for the position determined by the drive pulse, anda setpoint value for the difference of the position determined by the drive pulse compared to the position on the positioning travel of the valve determined by a preceding drive pulse; anddt_rt_eff is an effective return-travel time of an armature of the at least one control valve. 15. The method as recited in claim 14, wherein the effective return-travel time is determined from parameters and a velocity of the valve after the drive pulse of the at least one control valve has ended, according to the following formula: dt—rt_eff=C0+C1*v—gev—e. 16. The method as recited in claim 15, wherein the velocity is approached successively, an instantaneous value of the velocity being used as approximation at an instant. 17. The method as recited in claim 15, wherein the parameters are ascertained as a function of state variables of the actuator. 18. The method as recited in claim 15, wherein the parameters are ascertained from program maps. 19. An internal combustion engine, comprising: at least one hydraulically actuated valve, the valve being assigned a transducer which generates an electrical signal, corresponding to a travel position of the valve; andan activator, the activator adapted to perform the following:generating at least one signal, including the electrical signal corresponding to a travel position of the valve;correcting in accordance with the at least one signal a setpoint duration of at least one of: i) a current drive pulse, and ii) a following drive pulse assigned to a partial lift, wherein each partial lift is one stage in a multi-staged opening or closing of the valve;an ascertaining arrangement to ascertain repeatedly or continually a pair of values, including a mutually assigned instant and a positioning travel, and to correct the setpoint duration of a drive pulse based on at least one pair of ascertained values; andan ascertaining arrangement to ascertain a velocity of the valve at the instant, wherein at an instant during a drive pulse of the at least one control valve, a driving duration of the drive pulse is corrected in accordance with a corrected setpoint value. 20. The engine as recited in claim 19, wherein the hydraulically actuated valve is a gas-exchange valve that is acted upon by hydraulic pressure by a control valve on a high-pressure side and a control valve on the low-pressure side, and thus is able to be opened and closed. 21. The engine as recited in claim 20, wherein the control valve on the high-pressure side and the control valve on the low-pressure side are electrically driven. 22. The engine as recited in claim 21, wherein the opening of the control valve on the high-pressure side while control valve on the low-pressure side is in a closed state causes the gas-exchange valve to open, and the opening of the control valve on the low-pressure side while the control valve on the high-pressure side is in the closed state causes the gas-exchange valve to close. 23. The engine as recited in claim 20, wherein each of the control valves is capable of being driven by at least one drive pulse whose duration determines the travel position of the valve, the valve being opened/closed in at least one of one lift or a plurality of partial lifts, and at least one drive pulse being assigned to the at least one lift or partial lift, and the transducer generating a signal that discloses at least one of a discrete travel position of the valve and an assigned time, or a discrete instant and an assigned travel position. 24. The internal combustion engine as recited in claim 19, wherein the setpoint duration of the current drive pulse is corrected more than once over a duration of the current drive pulse. 25. A control unit for controlling a gas exchange valve of an internal combustion engine, the internal combustion engine having at least one control valve for opening the valve and one control valve for closing the valve, comprising: a control unit arrangement adapted to perform the following: starting a drive pulse having a setpoint duration of the drive pulse for at least one of opening and closing the valve;generating at least one signal that discloses at least one of a discrete travel position of the valve at a specified time and a discrete instant at a specified travel position; andcorrecting in accordance with the at least one signal the setpoint duration of at least one of i) a current drive pulse, and ii) a following drive pulse assigned to a partial lift, wherein each partial lift is one stage in a multi-staged opening or closing of the valve,wherein each of the control valves is capable of being driven by at least one drive pulse whose duration determines a travel position of the valve, the valve being opened or closed, in one lift or a plurality of partial lifts, and at least one drive pulse is assigned to each lift or each partial lift, and the valve is assigned at least one transducer which generates the at least one signal;an ascertaining arrangement to ascertain repeatedly or continually a pair of values, including a mutually assigned instant and a positioning travel, and to correct the setpoint duration of a drive pulse based on at least one pair of ascertained values; andan ascertaining arrangement to ascertain a velocity of the valve at the instant, wherein at an instant during a drive pulse of the at least one control valve, a driving duration of the drive pulse is corrected in accordance with a corrected setpoint value. 26. The control unit as recited in claim 25, wherein the setpoint duration of the current drive pulse is corrected more than once over a duration of the current drive pulse.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.