1. A method for reducing a risk of or avoiding a roll-over event of a vehicle having an electronic controllable steering system and an electronic control unit, the method comprising the steps of:
the electronic control unit identifying an occurrence of the roll-over risk; the electronic control unit determining an actual steering wheel velocity and a corresponding road wheel velocity;
the electronic control unit generating a control signal for the electronic controllable steering system in order to steer the road wheels more into the direction in which the vehicle is tending to roll-over, the control signal including a corrective road wheel angle that is based on a difference between the actual steering wheel velocity and the corresponding road wheel velocity;
the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driver input thereby limiting the driver input to a predetermined steering input; and
the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driving situation influenced by vehicle lateral forces.
2. A method as claimed in claim 1 further comprising the electronic controllable steering system having a steering wheel velocity and a torque assist wherein, the application of the generated control signal reduces the torque assist to force the driver to keep the steering wheel velocity below a certain value.
3. A method as claimed in claim 1, wherein the application of the generated control signal is executed by means of a continuously changing damping coefficient defining a delta steering torque.
4. A method as claimed in claim 3, further comprising the electronic controllable steering system having a steering wheel angle and a steering velocity, wherein the application of the generated control signal limits the steering velocity and offsets the steering wheel angle input by the driver when the steering wheel angle input by the driver exceeds either a predefined road wheel velocity or a predefined steering velocity defined velocity at road wheels or a defined steering velocity.
5. A method of claim 4, wherein the step of generating the control signal further comprises:
determining an actual steering wheel velocity;
determining a corresponding road wheel velocity; and
the application of the generated control signal generates a reduction of variable gear ratio.
6. A method of claim 1, wherein the step of generating the control signal further comprises the electronic control unit evaluating a desired steering angle by means of input variables of vehicle state.
7. A method of claim 1, wherein the step of generating the control signal further composes the electronic control unit evaluating a delta assist torque which is applied by the electronic control unit and guides the driver to apply predetermined steering angle that will prevent or overcome a roll-over risk.
8. A method of claim 1, wherein the step of generating the signal further comprises the electronic control unit generating a corrective steering angle that is applied in addition to the driver’s steering angle in order to actively generate a corrective steering action.
9. A method for reducing a risk of or avoiding a roll-over event of a vehicle having an electronic controllable steering system and an electronic control unit, the method comprising the steps of:
the electronic control unit identifying an occurrence of the roll-over risk; the electronic control unit determining an actual steering wheel velocity and a corresponding road wheel velocity;
the electronic control unit generating a control signal for the electronic controllable steering system in order to steer the road wheels more into the direction in which the vehicle is tending to roll-over, the control signal including a corrective steering wheel angle that is based on a difference between the actual steering wheel velocity and the corresponding road wheel velocity;
the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driver input and limits the driver input to a predetermined steering input; and
the electronic control unit applying the generated control signal to the electronic controllable steering system in response to a driving situation influenced by vehicle lateral forces.
10. A method as claimed in claim 9 further comprising the electronic controllable steering system having a steering wheel velocity and a torque assist wherein, the application of the generated control signal reduces the torque assist to force the driver to keep the steering wheel velocity below a certain value.
11. A method as claimed in claim 9, wherein the application of the generated control signal is executed by means of a continuously changing damping coefficient defining a delta steering torque.
12. A method as claimed in claim 11, further comprising the electronic controllable steering system having a steering wheel angle and a steering velocity, wherein the application of the generated control signal limits the steering velocity and offsets the steering wheel angle input by the driver when the steering wheel angle input by the driver exceeds either a predefined road wheel velocity or a predefined steering velocity defined velocity at road wheels or a defined steering velocity.
13. A method of claim 12, wherein the step of generating the control signal further comprises:
determining an actual steering wheel velocity;
determining a corresponding road wheel velocity; and
the application of the generated control signal generates a reduction of variable gear ratio.
14. A method of claim 9, wherein the step of generating the control signal further comprises the electronic control unit evaluating a desired steering angle by means of input variables of vehicle state.
15. A method of claim 9, wherein the step of generating the control signal further comprises the electronic control unit evaluating a delta assist torque which is applied by the electronic control unit and guides the driver to apply a predetermined steering angle that will prevent or overcome a roll-over risk.
16. A method of claim 9, wherein the generated signal further comprises the electronic control unit generating a corrective steering angle that is applied in addition to the driver’s steering angle in order to actively generate a corrective steering action.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A method for implementing access control for a query to a content management system comprising:
parsing the query into a plurality of portions;
creating an access control logic string for the query; and
inserting the access control logic string in each portion of the query string that has been parsed.
2. The method of claim 1, wherein creating the access control logic string comprises creating the access control logic string according to access control privilege information of a user.
3. The method of claim 2, further comprising obtaining access control privilege of the user from a library server.
4. A computer program product having instruction codes for implementing access control for a query to a content management system comprising:
a first set of instruction codes for parsing the query into a plurality of portions;
a second set of instruction codes for creating an access control logic string for the query; and
a third set of instruction codes for inserting the access control logic string in each portion of the query string that has been parsed.
5. The computer program product of claim 4, wherein the second set of instruction codes creates the access control logic string according to access control privilege information of a user.
6. The computer program product of claim 5, further comprising a fourth set of instruction codes for obtaining access control privilege of the user from a library server.
7. A system for implementing access control for a query to a content management system comprising:
means for parsing the query into a plurality of portions;
means for creating an access control logic string for the query; and
means for inserting the access control logic string in each portion of the query string that has been parsed.
8. The computer program product of claim 7, wherein the means for creating the access control logic string creates the access control logic string according to access control privilege information of a user.
9. The computer program product of claim 8, further comprising means for obtaining access control privilege of the user from a library server.