Vehicle steering control unit

A vehicle steering control unit for controlling steering of a vehicle, which is installed on a vehicle including a chassis control system, comprising a computer including:

• a control parameter retaining unit for retaining parameters as control parameters that are dependent on system properties of the vehicle in control laws for controlling the steering of the vehicle;
• a control execution unit for controlling the steering of the vehicle in accordance with values of the control parameters;
• a control information acquiring unit for acquiring control information including installed vehicle information which represents the system properties of the vehicle, including information retained by the chassis control system;
• and
• a control parameter value changing unit for changing the values of the control parameters based on the control information,
• wherein the control parameter retaining unit retains other control laws dependent on states of the chassis control system, and
• wherein the control parameter value changing unit refers to the installed vehicle information in preference to said another control information retained by the chassis control system when changing the values of the control parameters in a state where the vehicle is at halt or running.

A vehicle steering control unit for controlling steering of a vehicle, which is installed on a vehicle including a chassis control system, comprising a computer including:

• a control parameter retaining unit for retaining parameters as control parameters that are dependent on system properties of the vehicle in control laws for controlling the steering of the vehicle;
• a control execution unit for controlling the steering of the vehicle in accordance with values of the control parameters;
• a control information acquiring unit for acquiring control information including installed vehicle information which represents the system properties of the vehicle, including information retained by the chassis control system;
• and
• a control parameter value changing unit for changing the values of the control parameters based on the control information,
• wherein the control information acquiring unit acquires a system constituent element information which is on an element making up a steering system installed on the vehicle as another control information,
• the control parameter retaining unit retains other control laws which are dependent on the system constituent element information as the control parameters, and
• the control parameter value changing unit refers to the system constituent element information in preference to the installed vehicle information when changing the values of the control parameters for the first time after the vehicle steering control unit has been installed on the vehicle, and refers to the installed vehicle information in preference to the system constituent element information when changing the values of the control parameters for the second and later times after the vehicle steering control unit has been installed on the vehicle.