Full
Outline
The electromagnetic propulsion unit requires precise control of the armature end-of-rail velocity. A closed-loop control strategy for the armature end-of-rail velocity is proposed based on an inertial energy storage pulsed power supply system. Under this strategy, the actual armature end-of-rail velocity is controlled by detecting the armature velocity at the key position of the guiderail and adjusting the number of triggered pulsed alternators in the pulsed alternator array. Simulation results show that when the desired armature end-of-rail velocity is 850 m/s and if the field current of the pulsed alternator and the armature mass of load simultaneously change in the perturbation of 2%, the relative error of the armature end-of-rail velocity will be 0.376% without closed-loop regulation. However, the armature end-of-rail velocity error can be reduced to 0.020% after using the closed-loop control strategy.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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