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Interior permanent magnet synchronous machine (IPMSM) has been widely used in traction application due to high efficiency and high power density. Nowadays, in electric vehicle application, the average efficiency over a driving cycle (AEDC) is more attractive than the efficiency over single working point. The paper deals with the design optimization of the average efficiency over a given driving cycle...
The external rotor surface permanent magnet (SPM) machine is attractively used for in-wheel traction application. In view of energy consumption, the efficiency of SPM machine over a driving cycle is more important than that at a single working point. This paper focuses on optimizing the external rotor SPM machine considering a target driving cycle. Under a target driving cycle, the whole motor working...
This paper investigates the electromagnetic performance of a 45-slot/10-pole interior permanent magnet synchronous machine (IPMSM) for electric vehicle. To meet the complex requirements of electric vehicle, the comprehensive electromagnetic performance of a 45-slot/10-pole IPM machine is predicted by 2-D finite element analysis (FEA), and compared with a 12-slot/10-pole machine, an 18-slot/10-pole...
In numerous rehabilitation applications, joint motion is frequently required to be estimated through human muscle activity for motor control paradigm to impaired patients. Predicting joint torque in different degrees of freedom involves measurement of voluntary electromyography (EMG) on multiple muscle groups. From viewpoint of kinesiological discipline, agonist and antagonist muscle groups are respectively...
Anti-aircraft artillery servo system requires high tracking accuracy and strong robustness. In this paper, an algebraic tuning rule is presented for fractional PIλ controllers to control anti-aircraft artillery. A group of suitable parameters can be chosen out by drawing the curve describing relation between gain kp, ki and integral order λ when the crossover frequency and phase margin are given....
In order to realize high speed and high precision position control, satisfy the characteristic of following in the artillery servo system, and inhibit uncertain factors' influence to the controlled object, an active disturbance rejection control (ADRC) method is proposed. Research shows that compared with the traditional PID mode control method, the system based on ADRC has advantages of speedy response,...
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