Because of its significant impact on the cooperative regenerative braking performance electrified vehicles, modulation effect a hydraulic brake is great importance. To improve control further, novel pressure-difference-limiting method for pressure based on–off solenoid valves proposed. The linear relationship between coil current and difference across valve obtained. characteristics are simulated analysed. Then, algorithm designed. Hardware-in-the-loop tests under typical procedures carried...

The traditional regenerative braking control strategy usually uses the torque mode and does not perform closed-loop on charging current, when vehicle needs to be charged with a small system cannot work effectively. dual-mode proposed in this paper unifies of current torque. Especially battery is state high charge or temperature too low, can ensure safety, regeneration efficiency, ride comfort. In mode, proposal ADRC controller dynamically adjust motor achieve purpose accurately controlling...

To improve the vehicle pneumatic brake system, feasibility of using proportional valve as pressure regulator is studied in this article. Take relay WABCO research object. First, mathematic model for established Matlab/Simulink and verified through open loop experiment. Then, effects main physical geometrical parameters on characteristics are analyzed. Finally a PI controller with feedforward anti-windup compensation designed. Study shows that has good performance high linearity would not be...

Equipped with the regenerative braking system, electric vehicle coordinates friction and appropriately in normal conditions activates anti-lock system (ABS) emergency conditions. This paper mainly focuses on control strategy of electric-hydraulic blended brake for ABS an passenger car. According to variation adhesion coefficient under different roads, maximum force optimal slip ratio are calculated real-time. Then, hybrid ABS, which hydraulic coordinated order obtain available road guarantee...

ABSTRACT The Regenerative Braking System (RBS), as an important energy-saving technology, can effectively improve the energy economy of electric vehicle [1]. The introduction regenerative braking force requiring pneumatic regulating module to control friction more precisely and quickly. Solenoid on/off valve (SV) is controlled discontinuously with long response time well frequent pressure fluctuation, so consider using proportional relay (PPV) instead it. A typical Anti-lock Brake (ABS)...

This paper explores the Hopf bifurcation behavior of a general nonlinear disease spreading model with hybrid control. When control is applied to system, stability system can be significantly improved by adjusting controller parameter. Firstly, characteristic equation circumspectly researched choosing time delay as parameter, and criteria derived for under Then diagram stable area obtained through numerical simulation. We also found that link-adding probability, fractional order interaction...

The T-type powertrain bench testing technology has developed rapidly, and the test needs to perform rotational speed synchronous load control on wheels both sides of coaxial wheel when simulating a straight line condition. In this paper, dynamometer strategy based cross-coupling structure is proposed for target synchronization control, which contains sliding mode module, disturbance estimation module. Firstly, simulation model built in MATLAB/simulink environment, basis, controller built....

This paper addresses the active oscillation suppression control (AOSC) problem of an electric vehicle powertrain (EVP) with uncertain backlash. A novel constrained robust (CRC) strategy is proposed to handle unknown backlash, guarantee prescribed output constraint (POC) and damp vibration. Firstly, by treating backlash nonlinearity as additional disturbance, continuous mathematical model EVP derived for controller synthesis. On this basis, two finite-time extended state observers (FTESOs)...

Stability and robustness are two critical performance indexes in the design of trajectory tracking controllers for autonomous ground vehicles (AGVs). This paper designs a piecewise affine (PWA) based model predictive controller with stability guarantees AGVs. Firstly, order to capture tire's nonlinearity saturation characteristics as well ensure low computational loads, PWA tire is built approximate nonlinear Fiala model. Secondly, thanks superiority control (MPC) dealing state constraints,...