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The distributed driven electric vehicles(DDEV) employ multiple motors driven systems which effectively achieves the electronic chassis and the active safety of vehicle. In this paper, a two-stage strategies of traction control system (TCS) for the DDEV were proposed. In the first stage, a method based on the Single-layer feed-forward neural networks system (SFNN) trained by Extreme Learning Machine...
GIS is now widely used in power system because of its compact structure, easy maintenance, and reliable operation. It is necessary to detect partial discharge (PD) in GIS because partial discharge (PD) causes deterioration of insulation and losses of power system. UHF method has great advantages of high sensitivity, strong anti-interference ability, the ability of locating PD sources, and recognizing...
Extended-Range Electric Vehicles (E-REV) are principally battery electric vehicles with a relatively small auxiliary power unit (APU) to recharge the battery pack or directly to propel the vehicle during driving, which is seen as one of the most promising technological bridges between the vehicles of today and the sustainable concepts of tomorrow. Different powertrain system topologies of E-REVs are...
This paper aims to develop a multi-sensor fusion method for attitude estimation for a Self-Balancing Two-Wheeled Robot using a Micro Inertial Measurement Unit. An adaptive extended Kalman filter is proposed, which can filter the random drift error from inertial sensors, and also adaptively compensates external acceleration. External acceleration, which affects attitude estimation based on accelerometers,...
In this paper, we present a novel method for human-computer interaction based on finger motion detection. Image processing is used to get the position, motion direction and movement of the marked figure in the video image, and then associate them with the cursor position, motion direction and mouse function using windows underlying functions. Experimental results show that the method can accurately...
In this paper, a novel model for surface-mount PM (SPM), which takes the iron losses and machine parameters variation into account is presented. If the voltage of the copper resistance is ignored in the electric drive running at a high speed, the traditional equivalent circuit with a serial and parallel circuit could be transformed into a simple parallel circuit. The phasors diagram and two-axis equivalent...
In this paper, the field oriented control (FOC) for the permanent magnet synchronous motor (PMSM) and hardware-in-loop Simulation (HIL) test bench based on dSPACE is developed. Based on a novel PMSM mathematic model with iron losses taken into consideration, an improved calculation expression of isd and isq is proposed and a FOC controller is designed. To validate the presented control, a test bench...
Hardware-in-loop (HIL) real-time simulation and &test system for permanent magnet motor (PMM) is presented in this paper. Considering the low credibility of digital simulation issues and the complexity of advanced control algorithm verification, the real-time simulation platform based on dSPACE is built. The specific I/O interface and driving circuits are designed to achieve the signal insulating,...
This paper presents a novel DC link voltage feedforward control to improve the electric drive system tolerance capability to the dc link voltage sag. A uniform mathematic model, comprising the battery packs, voltage source inverter (VSI), permanent magnet synchronous motor (PMSM) is built up in the d-q rotating coordinates rather in three-phase stationary coordinates. In order to study the influence...
This paper presents a new method for the hall sensors fault recognition of the rare earth permanent magnet brushless motor (BLDCM). The operation principles of BLDCM under the healthy and fault conditions are analyzed theoretically and phase current waves are studied in detail. A general frequency methodology for hall sensors fault recognition based on fast Fourier transform (FFT) and Wavelet de-noising...
This paper describes a modified genetic algorithm (MGA) for optimizing the performance of linear sparse arrays with a fixed current distribution. Under the design constraints of the number of elements, the aperture and the minimum element spacing, the MGA has been utilized to optimize the element position to reduce the peak sidelobe level (PSLL) of the sparse arrays. Unlike standard GA using unalterable...
For the element position synthesis of sparse rectangular plane arrays with the design constraints of the number of elements, the aperture and the minimum element spacing, an improved genetic algorithm (IGA) based on chromosome element resetting is presented in this paper. Compared with the synthesis method of thinned arrays, this new approach could exploit more degree of freedom of elements to control...
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