Beijing Institute of Technology

Baotou Sansi Technology Development Co., Ltd.

Changle Xiang

Weida Wang

Hui Liu

Chao Yang

Yue Ma

Lijin Han

Shaoping Lv

Lili Xu

Liang Li

Jingang Liu

Donghao Zhang

Yanjie Wu

Zhongguo Zhang

Disclosed is a multi-mode electro-hydraulic brake boosting system and a control method thereof. When the boosting system fails, an emergency mechanical braking mode is achieved through structural redundancy, in a normal boosting mode, the system has a general braking mode and an emergency braking mode according to the strength requirements of a brake, and a general brake boosting mode and an emergency active pressurizing mode are controlled, respectively. Accurate boosting can be provided in the general braking process so that the pressure of a brake master cylinder can accurately follow target pressure, pressure buildup of the brake master cylinder can be completed more quickly in the emergency braking process, braking force is output to the maximum extent, the system response time of an emergency braking working condition is shortened, the braking capacity is improved, and traffic accidents are avoided.

Multi-mode electro-hydraulic brake boosting system and control method thereof

The present invention discloses a method for switching modes of an electromechanical transmission system which includes a clutch CLa motor A, a clutch CLa brake Ba motor B and three planet rows KKand KThe electromechanical transmission system according to the present invention achieves two different structural modes of EVT1 and EVT2 by changing states of the clutch CLand the brake BThe EVT1 mode is mainly a system running state at a low vehicle speed under a high driving torque demand, and the EVT2 mode is mainly a system driving state at a high vehicle speed under a low driving torque demand. Mode switching without speed difference and power interruption can be achieved by switching vehicle speed selection and reasonable adjustment of engine and motor torque.

Method for switching modes of electromechanical transmission system

The present invention discloses a real-time optimization control method for an electro-mechanical transmission system, and relates to the field of electro-mechanical transmission technologies. The method includes the following steps: (S) starting; (S) state observation: a current operating state of each element of the electro-mechanical transmission system is obtained through state observation; (S) dynamic prediction: a feasible operating range of each element of the electro-mechanical transmission system is obtained through dynamic prediction; (S) optimal decision: an optimal control command of each element in the optimal decision is formulated and executed; (S) feedback correction: feedback correction is performed on control amounts of a motor and an engine of the electro-mechanical transmission system by using state deviations; and (S) determining whether feedback correction meets a requirement, and if feedback correction meets the requirement, ending the process, or if feedback correction does not meet the requirement, repeating (S).

Real-time optimization control method for electro-mechanical transmission system

The present invention discloses an electromechanical compound transmission device for a tracked vehicle. The electromechanical compound transmission device includes a front transmission mechanism, a power coupling mechanism, an independent drive mechanism, and convergent planetary gearsets arranged on both sides of the power coupling mechanism. The present invention can not only implement driving, steering, and other functions of a vehicle, but also provide sufficient electric energy for a vehicle-mounted device. In other words, a series mode can be adopted to satisfy a torque output requirement, and is mainly used for low and medium-low speed driving, as well as reverse driving and climbing steep slopes; and a series-parallel mode can also be adopted to satisfy requirements of high and medium-high speed driving, and can achieve relatively high transmission efficiency and fuel economy.

Series-hybrid electromechanical compound transmission device for tracked vehicle

Growing community of inventors

Beijing, China

Changle Xiang