The master cylinder pressure is supplied to the rear wheels cylinder through a proportional valve.
![sm bus controller hp h8-1114 sm bus controller hp h8-1114](http://www.xiamenjiyang.com/upload/2017/06//2017062813070170554.jpg)
The brake pedal force is transmitted to a master cylinder through a vacuum booster. When braking, the VCU calculates the target deceleration and target brake force according to the brake pedal stroke, and the distribution between front and rear wheels. The electronic hydraulic brake system consists of a motor, a pump, an accumulator and a pressure regulating valve. The LF620 EV layout determines that regenerative braking torque can only operate on the front wheels. In addition to their energy regeneration benefits, motor brakes are superior to hydraulic brakes in their accuracy, quick response and ease of measurement. Particularly, this additional energy recycling can be achieved without adding of any extra components. Research indicates that substantial energy savings are in fact achievable, from 8% to as much as 25% of the total energy use of the vehicle, depending on the driving cycle and its control strategy. Therefore, regenerative braking is an efficient technology to improve the efficiency of electric vehicles. The dissipation of kinetic energy during braking, by an electric or hybrid vehicle can be recovered advantageously by controlling the power electronics for total energy management onboard the vehicle. It utilizes the electric motor, providing negative torque to the driven wheels and converting kinetic energy to electrical energy for recharging the battery or power supply. To improve the performance of electric vehicles, the regenerative braking system has been developed. The maximum driving range of LF620 EV was improved by 25.7% compared with non-RBS conditions.įor a conventional vehicle, a significant amount of energy is consumed in urban driving cycles by braking. The experimental results on an “LF620” prototype EV validated the feasibility and effectiveness of regenerative braking and showed that the proposed fuzzy RBS was endowed with good control performance. Then, a fuzzy RBS using the driver’s braking force command, vehicle speed, battery SOC, battery temperature are designed to determine the distribution between friction braking force and regenerative braking force to improve the energy recuperation efficiency. From the viewpoint of securing car stability in braking operations, the braking force distribution between the front and rear wheels so as to accord with the ideal distribution curve are considered to prevent vehicles from experiencing wheel lock and slip phenomena during braking.
#Sm bus controller hp h8 1114 series#
A fuzzy-logic-based regenerative braking strategy (RBS) integrated with series regenerative braking is developed in this paper to advance the level of energy-savings.
![sm bus controller hp h8-1114 sm bus controller hp h8-1114](https://pubswatch.psu.ac.th/dist/img/psu-logo.png)
Regenerative braking is an effective approach for electric vehicles (EVs) to extend their driving range.