1-6. (canceled)
7. A method of producing an asymmetric azine compound shown by the following general formula (II), the method comprising reacting a compound shown by the following general formula (VI) and hydrazine in a molar ratio of 2:1 to 1:2 in an alcohol solvent to obtain a reaction solution including a hydrazone compound shown by the following general formula (VII),
wherein X1 to X4 individually represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a cyano group, a nitro group, \u2014OR3, \u2014O\u2014C(\u2550O)\u2014R3, \u2014C(\u2550O)\u2014OR3, \u2014O\u2014C(\u2550O)\u2014OR3, \u2014NR4\u2014C(\u2550O)\u2014R3, \u2014C(\u2550O)\u2014N(R4)(R5), or \u2014O\u2014C(\u2550O)\u2014N(R4)(R5), R3, R4, and R5 individually represent a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms that may be bonded via \u2014O\u2014, \u2014S\u2014, \u2014O\u2014C(\u2550O)\u2014, \u2014C(\u2550O)\u2014O\u2014, \u2014O\u2014C(\u2550O)\u2014O\u2014, \u2014NR6\u2014C(\u2550O)\u2014, \u2014C(\u2550O)\u2014NR6\u2014, \u2014NR6\u2014, or \u2014C(\u2550O)\u2014 (excluding a case where the alkyl group is bonded via two or more adjacent \u2014O\u2014 or \u2014S\u2014), and R6 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms,
wherein X1 to X4 are the same as defined above, adding a compound shown by the following general formula (VIII) to the resulting reaction solution so that the molar ratio of the compound shown by the general formula (VIII) to the compound shown by the general formula (VII) is 2:1 to 1:2, and reacting the compound shown by the general formula (VII) and the compound shown by the general formula (VIII),
wherein X5 to X8 individually represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a cyano group, a nitro group, \u2014OR3, \u2014O\u2014C(\u2550O)\u2014R3, \u2014C(\u2550O)\u2014OR3, \u2014O\u2014C(\u2550O)\u2014OR3, \u2014NR4\u2014C(\u2550O)\u2014R3, \u2014C(\u2550O)\u2014N(R4)(R5), or \u2014O\u2014C(\u2550O)\u2014N(R4)(R5), R3, R4, and R5 are the same as defined above, provided that the compound shown by the general formula (VI) is not identical with the compound shown by the general formula (VIII),
wherein X1 to X8 are the same as defined above, provided that the group shown by the following formula (IX) is not identical with the group shown by the following formula (X),
wherein X1 to X4 are the same as defined above,
wherein X5 to X8 are the same as defined above.
8. The method according to claim 1, wherein X1 represents \u2014C(\u2550O)\u2014OR3, R3 represents a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, and X2 to X8 represent a hydrogen atom.
9. The method according to claim 1, wherein X1 represents \u2014C(\u2550O)\u2014OCH3, and X2 to X8 represent a hydrogen atom.
10. The method according to claim 3, wherein the alcohol is an alcohol having 1 to 10 carbon atoms.
11. An asymmetric azine compound shown by the following general formula (II-1),
wherein X1 represents \u2014C(\u2550O)\u2014OR3, R3 represents a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, and X2 to X8 represent a hydrogen atom.
12. The asymmetric azine compound according to claim 5, wherein X1 represents \u2014C(\u2550O)\u2014OCH3.
13. The method according to claim 1, wherein the alcohol is an alcohol having 1 to 10 carbon atoms.
14. The method according to claim 2, wherein the alcohol is an alcohol having 1 to 10 carbon atoms.
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 of coordinating a plurality of intervention measures into a driving performance of a vehicle, comprising the steps of:
determining a wheel slip angle of a front axle;
determining a coefficient of friction on the front axle;
determining a wheel slip angle threshold value;
comparing the wheel slip angle to the wheel slip angle threshold value; and
initiating a first intervention measure through at least one of a brake system of the vehicle and a drive system of the vehicle if an absolute value of the wheel slip angle is greater than an absolute value of the wheel slip angle threshold value.
2. The method according to claim 1, wherein when the absolute value of the wheel slip angle is less than the absolute value of the wheel slip angle threshold value:
the first intervention measure through at least one of the brake system and the drive system of the vehicle is not initiated; and
a second intervention measure through a dynamic steering system of the vehicle is initiated.
3. The method according to claim 1, wherein:
the wheel slip angle of the front axle is determined on the basis of a first equation, the first equation being
5
v
=
+
v
Gi
l
v
v
Fzref
–
;
wherein:
v is the wheel slip angle;
is a float angle;
vGi is a yaw rate of the vehicle;
vFzref is a velocity of the vehicle; and
is a steering angle at the front axle.
4. The method according to claim 3, wherein the float angle is determined by integrating a second equation, the second equation being
6
(
t
)
t
=
a
y
v
Fzref
–
v
Gi
;
wherein:
is the float angle;
ay is a transverse acceleration of the vehicle;
vFzref is the velocity of the vehicle; and
vGi is the yaw rate of the vehicle.
5. The method according to claim 1, wherein the coefficient of friction on the front axle is determined on the basis of a third equation, the third equation being
{square root over (ax2ay2)}g
wherein;
is the coefficient of friction;
ax is a longitudinal acceleration of the vehicle;
ay is a transverse acceleration of the vehicle; and
g is an acceleration due to gravity.
6. The method according to claim 1, wherein:
the wheel slip angle threshold value is determined as an intersection point of a first straight line and a second straight line, each of the first and second straight lines being tangents to a function of adhesion versus wheel slip angle; and
the first straight line being a first tangent at an origin point, and the second line being a second tangent to a saturation characteristic for a large wheel slip angle.
7. The method according to claim 1, further comprising the step of:
setting the wheel slip angle threshold value to 0 if a dynamic steering system is not active.
8. A device for coordinating intervention measures into a driving performance of a vehicle, comprising:
an arrangement for determining a wheel slip angle of a front axle;
an arrangement for determining a coefficient of friction on the front axle;
an arrangement for determining a wheel slip angle threshold value;
an arrangement for comparing the wheel slip angle to the wheel slip angle threshold value; and
an arrangement for initiating, when an absolute value of the wheel slip angle is greater than an absolute value of the wheel slip angle threshold value, a first intervention measure through at least one of a brake system of the vehicle and a drive system of the vehicle.