Patent ID: 7588298
Filing Date: 2009-09-15
Classification: B60T

Abstract:
1. A brake system control apparatus comprising: plural brake systems, each brake system including at least one brake and a control actuator that can control braking torque generated by the at least one brake, and a braking torque control device that creates a control command value for the control actuator of each of the brake systems, and that outputs the created control command value to the control actuator, wherein the braking torque control device comprises: a consideration command creating portion that creates a first control command value for the control actuator of a control-target brake system, which is one of the plural brake systems, based on information concerning an operation of at least one brake in the control-target brake system, and information concerning an operation of at least one brake in at least one of the other brake systems; a non-consideration command creating portion that creates a second control command value for the control actuator of the control-target brake system based on the information concerning the control-target brake system, the second control command being not based on the information concerning the at least one of the other brake systems; and a control command value selecting portion that selects one of the first control command value created by the consideration command creating portion and the second control command value created by the non-consideration command creating portion, based on at least one of (a) an absolute value of a difference between a target value of braking torque in the control-target brake system and a target value of braking torque in the at least one of the other brake systems; and (b) a combination of a control mode in the control-target brake system, which is set to one of a pressure increasing mode, a pressure decreasing mode and a pressure maintain mode, and a control mode in the at least one of the other brake systems, which is set to at least one of a pressure increasing mode, a pressure decreasing mode and a pressure maintaining mode, the selecting portion selects the first control command value created by the consideration command creating portion when the control mode in the control-target brake system and the control mode in the at least one of the other brake systems are the same, and both the control mode in the control-target brake system and the control mode in the at least one of the other brake systems is the increasing mode in which the braking torque is increased or the decreasing mode in which the braking torque is decreased; and the selecting portion selects the second control command value created by the non-consideration command creating portion when one of the control mode in the control-target brake system and the control mode in the at least one of the other brake systems is the increasing mode in which the braking torque is increased, and the other of the control mode in the control-target brake system and the control mode in the at least one of the other brake systems is the decreasing mode in which the braking torque is decreased.