公开(公告)号：US20230120929A1

公开(公告)日：2023-04-20

申请号：US17924332

申请日：2021-12-15

Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

Inventor： Wanzhong ZHAO ,  Ziyu ZHANG ,  Chunyan WANG ,  Xiaochuan ZHOU ,  Gang WU ,  Zhongkai LUAN ,  Yulin YE

IPC: B62D3/08 ,  B62D5/04 ,  B62D15/02 ,  H02K7/06 ,  H02K7/08 ,  H02K16/02

Abstract: Disclosed are a multifunctional electric recirculating ball steering system for commercial vehicles and a control method thereof, including: an electric power module, a mechanical transmission module and a control module; the electric power module includes: a dual-rotor motor module (14) and a power motor (22); the mechanical transmission module includes: a steering wheel (1), a steering shaft (4), couplings (5), a recirculating ball steering gear (16), a gear sector (19), a gear sector shaft (6), a steering drag link (7), a steering tie rod (12), a steering knuckle arm (8), a left tie rod arm (11), a right tie rod arm (26), a left steering knuckle (10), a right steering knuckle (25), a left wheel (9) and a right wheel (24); and the control module includes: an electronic control unit (21), torque sensors (3), a vehicle speed sensor (20), a steering angle sensor (2) and current sensors (23). The system ensures system reliability.

公开(公告)号：US20220289269A1

公开(公告)日：2022-09-15

申请号：US17636006

申请日：2020-05-14

Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

Inventor： Wanzhong ZHAO ,  Zhongkai LUAN ,  Xiaochuan Zhou ,  Chunyan Wang

IPC: B62D5/00 ,  B60W40/10

Abstract: An electric truck steer-by-wire system and a net-work uncertainty control method therefor. Said system comprises: a master control electric power module (14), a slave control electric power module (18), a road-sensing motor module (4), a steering wheel (1), an upper steering column (3), a lower steering column(10), a rack and pinion steering mechanism (12), wheels (13), a first steering angle sensor (2), a second steering angle sensor (11),a steering domain controller (8), and a vehicle-mounted CAN network (9). By means of the design of the master and slave controllers and actuating mechanisms, the system combines the advantages of steering angle tracking, torque tracking and current tracking, there-by satisfying the steering response requirements and power requirements of the electric truck, and further enhancing the robustness and fault-tolerant performance of the system under a random network time lag.

公开(公告)号：US20220126910A1

公开(公告)日：2022-04-28

申请号：US17258415

申请日：2020-05-14

Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

Inventor： Wanzhong ZHAO ,  Xiaochuan ZHOU ,  Changzhi ZHOU ,  Zhongkai LUAN ,  Weihe LIANG

IPC: B62D5/04 ,  B62D5/06 ,  B62D15/02 ,  B62D5/30 ,  B62D5/00

Abstract: The present invention discloses a drive-by-wire electro-hydraulic steering system based on a double-winding motor and a hybrid control method. The steering system includes a steering wheel (1), a steering column assembly, a road sense assembly, an electro-hydraulic power-assisted module, a double-winding motor power-assisted module (28), a steering control unit, an electromagnetic clutch (8), a steering tie rod (17), a steering trapezoid (13) and steering wheels (12). The steering system can be switched among various steering work modes according to work conditions of a vehicle, meets steering requirements under various work conditions, uses a work mode that two sets of windings of the double-winding motor work at the same time, and has a motor winding redundancy function. When one set of windings fails, the other set of windings can drive the motor to provide power-assisted torque.