| 摘要 |
The steer-by-wire steering device includes a steering wheel, an operating angle sensor which detects an operation angle of the steering wheel, an operating element actuator which applies an external force for force feedback to the steering wheel, a tire reactive force sensor, a steering actuator which applies an external force to a vehicle's steering system, and a controller which receives output signals of the operating angle sensor and the tire reactive force sensor and controls driving of the operating element actuator and the steering actuator. A plurality of functions F1=f(b), F2=f(b), F3=f(b) which use a detection signal b inputted from the tire reactive force sensor as a parameter are preliminarily stored in the controller. Then, an optimum function is selected from the plurality of preliminarily stored functions in response to a level of the detection signal b. Thereafter, a drive signal c for the operating element actuator is computed based on the selected function and the level of the inputted detection signal and then is outputted.
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