Suspension control device, suspension control method, and suspension control system

A suspension control method in a suspension control device that controls a suspension of a vehicle, the suspension control method, comprising:

• storing a weight parameter indicating a correspondence between behavior information indicating behavior of a vehicle, including at least rotational wheel speeds and a front-rear acceleration of the vehicle, and sensor data corresponding to piston speed and sprung speed related to each of suspensions of a plurality of wheels provided in the vehicle, the weight parameter determined in advance by machine learning;
• receiving by a vehicle behavior inference unit that includes a neural network the behavior information among communication data transmitted in the vehicle and inferring the sensor data related to the suspension of the vehicle for each of the suspensions based on the behavior information and the weight parameter;
• and
• calculating a suspension control value for controlling the suspension based on the inferred sensor data;
• and
• controlling a suspension of the vehicle based on the suspension control value.

A suspension control system including

• a server device and
• a suspension control device that controls a suspension of a vehicle, wherein
• the server device acquires behavior information indicating behavior of the vehicle, including at least rotational wheel speeds and a front-rear acceleration of the vehicle, and sensor data corresponding to piston speed and sprung speed related to each of suspensions of a plurality of wheels provided in the vehicle, and determines, by machine learning, a weight parameter indicating a correspondence between the behavior information and the sensor data, and
• the suspension control device includes a neural network that acquires the weight parameter from the server device, receives the behavior information among communication data transmitted in the vehicle, infers the sensor data related to the suspension of the vehicle for each of the suspensions based on the behavior information and the weight parameter, and controls the suspension based on the inferred sensor data.