Driver assistant system based on electric power steering (EPS) state machine, and state switching method of driver assistant system
A technology for assisted driving and state switching, applied in steering mechanisms, mechanical steering mechanisms, electric steering mechanisms, etc., can solve the problem of difficult detection of the driver's steering wheel state, and achieve the effect of correcting the hands-free driving habit and preventing the deviation of the driving direction.
Active Publication Date: 2019-07-12
JIANGSU UNIV
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Problems solved by technology
For example, in the document of Chinese Patent Publication No. CN206561835U, in a kind of parking steering wheel returning prompting system disclosed in the literature, it is necessary to add devices such as buzzer, loudspeaker, display screen to prompt returning to correcting, and what is prompted is only the steering wheel of the car under the parking situation. Whether it is back to normal or not, it is difficult to detect the state of the driver's steering wheel in the driving state of the vehicle, these problems have yet to be resolved
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[0019] see figure 1 with figure 2 , the assisted driving system based on the EPS state machine of the present invention includes an EPS state machine 5 . The EPS state machine 5 is composed of an ECU 51 , a motor drive module 53 and a signal communication module 54 . The signal communication module 54 is bidirectionally connected to the ECU 51 , and the output end of the ECU 51 is connected to the motor drive module 53 .
[0020] The input end of the signal communication module 54 is connected to the torque sensor 2 via the signal line, and the torque sensor 2 is used to detect the output torque T of the driver for the steering wheel 1 man , and transmit it to the signal communication module 54.
[0021] The output end of the motor driving module 53 is connected to the motor 9 through the control line, the motor 9 is connected to the motor signal module 10 , and the output end of the motor signal module 10 is connected to the signal communication module 54 . The motor 9 o...
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The invention discloses a driver assistant system mounted on a vehicle and based on an electric power steering (EPS) state machine, and a state switching method of the driver assistant system. The EPSstate machine is composed of an ECU, a motor driving module and a signal communication module; the ECU comprises eight states of un-preparation, preparation, assistance, correction, prompt, fault, first response and second response; according to signal input of various types of sensors, state jump in the driving process is automatically completed to achieve EPS multifunctional conversion; throughthe EPS state machine, in the vehicle driving process, a driver is prompted to focus on driving; and through pulsating torque generated by a motor in EPS, the driver is subjected to vibration promptwithout affecting normal driving, wrong driving habits of the driver are prompted and corrected, or the situation that the driver sneaks off and thus does not find sudden driving hazards is prevented,the driving direction deviation not intended by the driver is prevented, and the hand-taking-off driving habit of the driver in the driving process is corrected.
Description
technical field [0001] The invention relates to the fields of automobile driving, steering and motor control, and is an auxiliary driving system installed on a vehicle, is an auxiliary driving system based on an electric power steering (EPS) state machine, and has a safety prompting function. Background technique [0002] The state machine is composed of state registers and combinational logic circuits, which can transfer according to the preset state according to the control signal, and is the control center for completing specific operations. The EPS state machine is a control module that switches the working mode of the EPS according to the input signal of the external sensor and according to the preset. For traditional cars, EPS only provides power steering, and does not require a state machine to implement state switching. For EPS with added functions, the state machine must implement state switching. [0003] Assisted Driving System (ADAS) uses various sensors install...
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Login to View More IPC IPC(8): B62D5/00B62D5/04
CPCB62D5/003B62D5/046
Inventor 孙晓东金志佳陈龙周卫琪杨泽斌李可
Owner JIANGSU UNIV