Back to results
US 12,092,204 B2Granted
Method and control device for operating a transmission device and transmission device
AssigneeKNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
InventorsMario Luebstorf, Markus Lichtenstein
Life of this patent
Estimating the term…
Abstract
A method for operating a transmission device, in which a requested value of an output torque of the transmission device is input and a first control signal for controlling a first actuator and a second control signal for controlling a second actuator of the transmission device is determined according to the requested value. The control signals bring about input torques which, according to the requested value of the output torque, on the output side of the output shaft, cause moments with different signs and with different absolute values that are different from zero, or moments with the same signs and with the same absolute values that are different from zero.
Claims9
A method for operating a transmission device, wherein
- the transmission device has a first actuator, a second actuator, and a transmission unit,
- the transmission unit includes a first gear train, a second gear train, and an output shaft for providing an output torque of the transmission device,
- the first gear train and the second gear train are coupled on the output side to the output shaft in a manner that enables torque transmission, wherein the first gear train is coupled on an output side to the first actuator in a manner that enables torque transmission,
- the second gear train is coupled on the input side to the second actuator in a manner that enables torque transmission, and
- the first actuator is designed for coupling a first input torque into the first gear train and the second actuator is designed for coupling a second input torque into the second gear train,
- the method comprising the steps of:
- reading-in a request signal that represents a requested value for the output torque;
- determining a first control signal for controlling the first actuator and a second control signal for controlling the second actuator by utilizing the request signal,
- wherein the first and second control signals effectuate the first and second input torques that induce torques on the output side at the output shaft having different signs and having different, non-zero absolute values when the request signal represents a requested value of the output torque in a first value range, and
- wherein the first and second control signals effectuate the first and second input torques that induce torques on the output side at the output shaft having the same sign and having identical, non-zero absolute values when the request signal represents a requested value of the output torque in a second value range, which second value range differs from the first value range;
- and
- outputting the first control signal at the first actuator and outputting the second control signal at the second actuator in order to generate the first input torque and the second input torque;
- wherein,
- in the step of determining, a threshold value comparison of the requested value of the output torque with at least one predefined threshold value for an absolute value of the output torque is carried out, in order to assign the requested value of the output torque to the first value range when the threshold value is fallen below and to the second value range when the threshold value is exceeded.
11 more elements
A control device comprising one or more processors and associated memory configured to control a transmission device,
- the transmission device having a first actuator, a second actuator, and a transmission unit,
- the transmission unit including a first gear train, a second gear train, and an output shaft for providing an output torque of the transmission device,
- the first gear train and the second gear train being coupled on the output side to the output shaft in a manner that enables torque transmission, wherein the first gear train is coupled on an output side to the first actuator in a manner that enables torque transmission,
- the second gear train is coupled on the input side to the second actuator in a manner that enables torque transmission, and
- the first actuator is designed for coupling a first input torque into the first gear train and the second actuator is designed for coupling a second input torque into the second gear train,
- the control device controlling the transmission device by:
- reading-in a request signal that represents a requested value for the output torque;
- determining a first control signal for controlling the first actuator and a second control signal for controlling the second actuator by utilizing the request signal, wherein the first and second control signals effectuate the first and second input torques that induce torques on the output side at the output shaft having different signs and having different, non-zero absolute values when the request signal represents a requested value of the output torque in a first value range, and wherein the first and second control signals effectuate the first and second input torques that induce torques on the output side at the output shaft having the same sign and having identical, non-zero absolute values when the request signal represents a requested value of the output torque in a second value range, which second value range differs from the first value range;
- and
- outputting the first control signal at the first actuator and outputting the second control signal at the second actuator in order to generate the first input torque and the second input torque;
- wherein,
- in the determining, a threshold value comparison of the requested value of the output torque with at least one predefined threshold value for an absolute value of the output torque is carried out, in order to assign the requested value of the output torque to the first value range when the threshold value is fallen below and to the second value range when the threshold value is exceeded.
9 more elements
Dependencies are inferred from the claim text.