초록 ▼

A control circuit for a controllable electric solenoid valve of a brake system of a motor vehicle is described, in which the actual values of a controlled variable (f(t)), e.g., the vehicle deceleration, a wheel slip, a driving speed, an angle of rotation or the like are returned to a predetermined

A control circuit for a controllable electric solenoid valve of a brake system of a motor vehicle is described, in which the actual values of a controlled variable (f(t)), e.g., the vehicle deceleration, a wheel slip, a driving speed, an angle of rotation or the like are returned to a predetermined tolerance band. The actual value of the controlled variable is measured continuously and compared with the predetermined tolerance band, which is stored in an EEPROM, for example. If the actual value of the controlled variable leaves the predetermined tolerance band (22), a correction device (15) intervenes and returns the actual value to the predetermined tolerance band by increasing or decreasing the trigger current for the solenoid valve ( 1).

대표청구항 ▼

What is claimed is: 1. A control circuit for a controllable electric solenoid valve of a brake system of a motor vehicle for adjusting a holding force for a valve closing body of the controllable electric solenoid valve, the control circuit comprising: a regulator to predetermine a field current fo

What is claimed is: 1. A control circuit for a controllable electric solenoid valve of a brake system of a motor vehicle for adjusting a holding force for a valve closing body of the controllable electric solenoid valve, the control circuit comprising: a regulator to predetermine a field current for the controllable electric solenoid valve according to a setpoint value of a predetermined controlled variable and to regulate an actual value of the predetermined controlled variable within a predetermined tolerance band; and a correction device to one of increase and decrease the field current when the actual value leaves the predetermined tolerance band for the setpoint value of the predetermined controlled variables, and to alter the field current as a function of a closing force of the controllable electric solenoid valve. 2. The control circuit of claim 1, wherein the correction device preselects a current/pressure characteristic curve as the predetermined controlled variable. 3. The control circuit of claim 1, wherein the correction device is operable to correct an actual value of a braking deceleration. 4. The control circuit of claim 1, wherein the correction device is operable to correct an actual value of a vehicle speed. 5. The control circuit of claim 1, wherein the correction device is operable to correct an actual value of a wheel slip value. 6. The control circuit of claim 1, wherein the correction device is operable to perform a brake intervention measure in conjunction with adaptive cruise control when the actual value drops below a setpoint value for the distance from an obstacle. 7. The control circuit of claim 1, further comprising: a memory to store correction values for a trigger current as a function of one of the setpoint value of the controlled variable and the predetermined tolerance band. 8. The control circuit of claim 7, wherein the memory includes an EEPROM memory. 9. The control circuit of claim 1, wherein the correction device includes a computer to calculate the actual value of the controlled variable by executing a software program. 10. The control circuit of claim 1, wherein the correction device is operable to control at least one of an antilock brake system and an electronic stability program. 11. The control circuit of claim 1, wherein: the correction device preselects a current/pressure characteristic curve as the predetermined controlled variable; the correction device is operable to perform at least one of the following: correct an actual value of a braking deceleration, correct an actual value of a vehicle speed, correct an actual value of a wheel slip value, and perform a brake intervention measure in conjunction with adaptive cruise control when the actual value drops below a setpoint value for the distance from an obstacle. 12. The control circuit of claim 11, further comprising: a memory to store correction values for a trigger current as a function of one of the setpoint value of the controlled variable and the predetermined tolerance band. 13. The control circuit of claim 12, wherein the memory includes an EEPROM memory. 14. The control circuit of claim 12, wherein the correction device includes a computer to calculate the actual value of the controlled variable by executing a software program. 15. The control circuit of claim 12, wherein the correction device is operable to control at least one of an antilock brake system and an electronic stability program. 16. The control circuit of claim 12, wherein the correction device includes a computer to calculate the actual value of the controlled variable by executing a software program, and the correction device is operable to control at least one of an antilock brake system and an electronic stability program. 17. The control circuit of claim 11, wherein the correction device includes a computer to calculate the actual value of the controlled variable by executing a software program. 18. The control circuit of claim 11, wherein the correction device is operable to control at least one of an antilock brake system and an electronic stability program. 19. The control circuit of claim 11, wherein the correction device includes a computer to calculate the actual value of the controlled variable by executing a software program, and the correction device is operable to control at least one of an antilock brake system and an electronic stability program.