Pseudo-emotion generation method, travel evaluation method, and travel evaluation system

Abstract

Provided is a method of generating a pseudo-emotion of a vehicle including a wheel, the method including: obtaining a tire force which is an external force exerted on the wheel from a ground surface; deriving an emotion evaluation index as a rating of a pseudo-emotion; and generating the pseudo-emotion based on the derived emotion evaluation index. The emotion evaluation index includes a positive evaluation index as a rating of a positive emotion. The positive evaluation index is derived based on the tire force in such a manner that the larger the tire force is, the higher the positive evaluation index is.

1 . A pseudo-emotion generation method of generating a pseudo-emotion of a vehicle including a wheel, the method comprising:
 obtaining a tire force which is an external force exerted on the wheel from a ground surface;   deriving an emotion evaluation index as a rating of a pseudo-emotion of the vehicle; and   generating the pseudo-emotion based on the derived emotion evaluation index, wherein   the emotion evaluation index includes a positive evaluation index as a rating of a positive emotion, and   in deriving the emotion evaluation index, the positive evaluation index is derived based on the obtained tire force in such a manner that the larger the tire force is, the higher the positive evaluation index is.   
     
     
         2 . The pseudo-emotion generation method according to  claim 1 , wherein
 in obtaining the tire force, a longitudinal force component exerted on the wheel from the ground surface in a longitudinal direction and a lateral force component exerted on the wheel from the ground surface in a lateral direction are obtained as the tire force, and   in deriving the emotion evaluation index, the positive evaluation index is derived based on both the longitudinal force component and the lateral force component.   
     
     
         3 . The pseudo-emotion generation method according to  claim 2 , wherein in deriving the emotion evaluation index, the positive evaluation index derived is higher when both the longitudinal force component and the lateral force component are generated than when only the longitudinal force component or the lateral force component is generated. 
     
     
         4 . The pseudo-emotion generation method according to  claim 2 , wherein in deriving the emotion evaluation index, the positive evaluation index is maximum when both the longitudinal force component and the lateral force component are generated. 
     
     
         5 . The pseudo-emotion generation method according to  claim 1 , wherein
 the emotion evaluation index includes a negative evaluation index as a rating of a negative emotion, and   in generating the pseudo-emotion, an overall evaluation index of the pseudo-emotion is derived based on the positive evaluation index and the negative evaluation index.   
     
     
         6 . The pseudo-emotion generation method according to  claim 5 , wherein in deriving the emotion evaluation index, the negative evaluation index is derived based on an up-down vibration value representing vibration of the vehicle in an upward/downward direction. 
     
     
         7 . The pseudo-emotion generation method according to  claim 1 , wherein in deriving the emotion evaluation index, instantaneous values of the emotion evaluation index are derived at different time points based on an input parameter used for determining the emotion evaluation index, and the emotion evaluation index is set in such a manner that a change over time in the emotion evaluation index is reduced as compared to a change over time in the derived instantaneous value. 
     
     
         8 . The pseudo-emotion generation method according to  claim 1 , wherein in deriving the emotion evaluation index, the emotion evaluation index derived at a time point is corrected based on a past emotion evaluation index derived before the time point. 
     
     
         9 . The pseudo-emotion generation method according to  claim 8 , wherein in deriving the emotion evaluation index, the emotion evaluation index derived at the time point is more influenced by a first past emotion evaluation index derived before the time point than by a second past emotion evaluation index derived before derivation of the first past emotion evaluation index. 
     
     
         10 . A travel evaluation method of making an evaluation related to travel of a vehicle including a wheel, the method comprising:
 obtaining a tire force which is an external force exerted on the wheel from a ground surface; and   deriving an evaluation index related to travel of the vehicle, wherein   the evaluation index includes a positive evaluation index as a rating of a positive evaluation related to travel of the vehicle, and   in deriving the evaluation index, the positive evaluation index is derived based on the obtained tire force in such a manner that the larger the tire force is, the higher the positive evaluation index is.   
     
     
         11 . A travel evaluation system configured to make an evaluation related to travel of a vehicle including a wheel, the system comprising:
 a tire force obtaining section that obtains a tire force which is an external force exerted on the wheel from a ground surface; and   an evaluation index deriving section that derives an evaluation index related to travel of the vehicle, wherein   the evaluation index includes a positive evaluation index as a rating of a positive evaluation related to travel of the vehicle, and   the evaluation index deriving section derives the positive evaluation index based on the tire force obtained by the tire force obtaining section in such a manner that the larger the tire force is, the higher the positive evaluation index is.