Vehicle and control method thereof
AssigneesToyota Jidosha Kabushiki Kaisha, Aisin Aw Co., Ltd.
InventorsTakeshi Nozaki, Shinobu Nishiyama
Life of this patent
Estimating the term…
Abstract
When the detected value of a rotation speed sensor is normal, it is determined whether or not a vehicle is stopping by using a predetermined rotation speed N1 as a stop determination upper limit rotation speed Nojmax, and when the detected value of the rotation speed sensor is not a normal value due to a magnetic field or the like from a road heater, it is determined whether or not the vehicle is stopping by using a predetermined rotation speed N2 which is larger than the predetermined rotation speed N1as the stop determination upper limit rotation speed Nojmax. Thereby, it can be more properly determined whether or not the vehicle is stopping in accordance with whether or not the detected value of the rotation speed sensor is normal.
Claims18
A vehicle, comprising:
- a motor capable of inputting and outputting power;
- a power transmission module transmitting power between said motor and a drive shaft connected to a drive wheel;
- a drive shaft rotation speed detection or estimation module detecting or estimating a rotation speed of said drive shaft;
- a motor rotation speed detection module detecting a rotation speed of said motor;
- a rotation speed determination module determining whether or not a detected or estimated drive shaft rotation speed and a detected motor rotation speed are both normal on the basis of said detected or estimated drive shaft rotation speed which is the rotation speed of the drive shaft detected or estimated by said drive shaft rotation speed detection or estimation module, and said detected motor rotation speed which is the rotation speed of the motor detected by said motor rotation speed detection module;
- a stop determination range setting module setting a first predetermined rotation speed range as a stop determination range when said detected or estimated drive shaft rotation speed and said detected motor rotation speed are both determined as normal by said rotation speed determination module, and setting a second predetermined rotation speed range with said first predetermined rotation speed range as one part thereof as said stop determination range when it is determined that at least one of said detected or estimated drive shaft rotation speed and said detected motor rotation speed is not normal by said rotation speed determination module;
- and
- a vehicle stop determination module determining whether or not the vehicle is stopping on the basis of a determining rotation speed of said drive shaft which is set on the basis of said detected or estimated drive shaft rotation speed detected or estimated by said drive shaft rotation speed detection or estimation module, or the detected motor rotation speed detected by said motor rotation speed detection module, and a stop determination range set by said stop determination range setting module.
A control method of a vehicle comprising a motor capable of inputting and outputting power, a power transmission module transmitting power between said motor and a drive shaft connected to a drive wheel, a drive shaft rotation speed detection or estimation module detecting or estimating a rotation speed of said drive shaft, and a motor rotation speed detection module detecting a rotation speed of said motor,
- wherein it is determined whether or not a detected or estimated drive shaft rotation speed and a detected motor rotation speed are both normal on the basis of said detected or estimated drive shaft rotation speed which is the rotation speed of the drive shaft detected or estimated by said drive shaft rotation speed detection or estimation module, and said detected motor rotation speed which is the rotation speed of the motor detected by said motor rotation speed detection module;
- and
- when it is determined that said detected or estimated drive shaft rotation speed and said detected motor rotation speed are both normal, it is determined whether or not said vehicle is stopping on the basis of a determining rotation speed of said drive shaft which is set on the basis of said detected or estimated drive shaft rotation speed or said detected motor rotation speed, and a first predetermined rotation speed range, and when it is determined that at least one of said detected or estimated drive shaft rotation speed and said detected motor rotation speed is not normal, it is determined whether or not the vehicle is stopping on the basis of the determining rotation speed of said drive shaft which is set on the basis of said detected or estimated drive shaft rotation speed or said detected motor rotation speed and a second predetermined rotation speed range with said first predetermined rotation speed range as a part thereof.
Dependencies are inferred from the claim text.