Vehicle braking force control device and method for controlling vehicle braking force
A technology for vehicle braking and control equipment, applied in the direction of braking control systems, brakes, brake components, etc., can solve the problems of insufficient reduction of wheel braking force, reduced wheel braking force, and small wheel braking force
Inactive Publication Date: 2014-04-16
TOYOTA JIDOSHA KK +1
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Problems solved by technology
[0006] Therefore, when the regenerative braking force just before anti-skid control starts is large, the braking force on the wheels is excessively reduced, and due to this, the braking force on the wheels may become too small
Furthermore, when such a problem is prevented by setting the target reduction amount smaller than the amount calculated based on the slip during braking, in the case where the regenerative braking force just before anti-skid control starts is small, the force on the wheels cannot be sufficiently reduced. braking force, which may result in ineffective reduction of slip during braking
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[0035] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0036] figure 1 is a schematic block diagram showing an embodiment of the braking force control apparatus according to the present invention applied to a hybrid system-mounted vehicle.
[0037] exist figure 1Among them, the braking force control apparatus 100 according to the present embodiment is installed in a vehicle 102 . The braking force control device 100 includes a hydraulic friction braking device 12 , a front wheel regenerative braking device 14 and a rear wheel regenerative braking device 16 . Thus, the vehicle 102 is to control the braking force at each wheel using the cooperative control of friction braking by the friction braking device 12 and regenerative braking by the front wheel regenerative braking device 14 and the rear wheel regenerative braking device 16 Vehicles.
[0038] also in figure 1 Among them, a hybrid system 18 ...
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A vehicle braking force control device includes a controller that controls braking force of a wheel by controlling friction braking force generated by a friction braking device and regenerative braking force generated by regenerative braking devices and that performs anti-skid control based on a requested amount of braking force reduction by controlling the friction braking force and reducing the regenerative braking force by an amount of regenerative braking force reduction. The controller sets a target change amount of the friction braking force based on the requested amount of braking force reduction and the amount of regenerative braking force reduction, and controls the friction braking force based on the target change amount when the controller reduces the regenerative braking force by the amount of regenerative braking force reduction.
Description
technical field [0001] The present invention relates to a vehicle braking force control device and a method of controlling a vehicle braking force, and more particularly, to a braking force control device and a method of controlling a vehicle braking force applied to a vehicle performing regenerative braking. Background technique [0002] Antiskid control (ABS control) is generally known in which, when either wheel experiences excessive slip during braking, the braking force of a particular wheel is reduced to reduce slip during braking. Such anti-skid control is also performed in vehicles that perform regenerative braking. [0003] For example, the following Japanese Patent Application Publication No. 2005-304100 (JP2005-304100A) describes that by reducing the regenerative braking force, on the basis of anti-skid control, the required reduction in braking force is achieved, and by increasing the frictional braking force, in anti-skid Based on the control, the braking force...
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IPC IPC(8): B60L7/26B60T1/10B60W30/18
CPCB60W30/18127B60T1/10B60T8/176B60W10/188B60W10/08B60L7/26B60W20/00B60T2270/602
Inventor 加藤英久后藤乔行曾根笃史堂浦阳文
Owner TOYOTA JIDOSHA KK