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According to calculate the thermal power of drive circuit of High Speed On-Off Valve (HSV), This paper proposes a method to calculate thermal power of key element based on Three Co-simulation (Simulink-PSpice-AMESim). Firstly, the 2D and 3D model of HSV are established and the electromagnetic characteristics curve of HSV is obtained by Finite Element Analysis in ANSYS and then the accurate model of...
BP neural network (BPNN) is used to estimate vehicle velocity when car brakes and ABS functions. Based on Fuzzy C-Means (FCM) clustering algorithm, a new empirical formula of hidden-layer nodes is proposed. Adding delays to the input-layer of BPNN for expanding the input sample space can improve estimated accuracy greatly. The appropriate distributed delays selected can reduce the redundancy of the...
In this paper, a coordination control strategy of Electrohydraulic Brake System was designed based on Sliding Mode Variable structure control. It mainly researched on how the motor participate in Anti-lock Braking system. The simulation results show that the algorithm effectively improved the hydraulic system slow response disadvantage and the oscillations of longitudinal acceleration and slip ratio...
A simplified model for the hydraulic unit of Anti-lock brake system is established with the software AMESim, which also obtains the dynamic characteristic curve of high speed on/off valve. Then the relationship width modulation frequency and duty with wheel cylinder pressure is studied. Two methods are presented to figure out the pulse width modulation duty, which are used to control wheel cylinder...
An electro-hydraulic parallel brake scheme based on Anti-lock Braking System (ABS) is proposed. Taking advantage of the hydraulic control unit of ABS, the regenerative brake is preferentially adopted as far as possible on the premise of braking safety. Then, a detailed brake system model including ABS unit is built using the joint simulation technology of AMEsim and Matlab, the parallel brake control...
This article provides a new control strategy of parallel regenerative brake system based on the requirement of new energy vehicles, and optimizes the control strategy according to ECE regulations, so that vehicles can use the maximized regenerative braking capability on the premise of ECE regulations. We verify the feasibility and braking performance of the optimized control strategy in MATLAB/Simulink-AMESim...
In this paper the structure analysis of high speed on-off valve is carried out. physical model of high speed on-off valve based on AMESim is Established. This paper analysis different duty cycles impact on the on-off characteristic of high speed on-off valve, and relationship between PWM frequency and linear action interval of the valve, and as well as the relationship among different duty cycle,...
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