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TUDY OF A TEPPING MOTOR PEED-UBDIVIION CONTRO YTEM ABTRACT This paper presens a speed-subdivision conrol and drive sysem. I is used on railway locomoives o improve heir performance by solving some disadvanages of he elder sysem. This new sysem of elecrical acceleraors is applying o he high-performance speed conrol of railway locomoives. I is consised of elecrical driver conroller, driver source, and resisor box for curren limiaion, mechanical drive machines and sepping moor. In his paper he sysem operaion principle is analyzed a lengh. Also houghfully considered is he sepping moor dynamic model. And he sysem performance is furher improved afer close-loop conrol sraegy and some novel circuis adoped. I can flexibly and smoohly conrol railway locomoives o accelerae, decelerae or run a a cerain speed, which is exacly he chief objecive of locomoive seering. Up o nowadays his sysem has been applied o many railway locomoives and has worked saisfyingly. And i also has widely gained he users recommendaion. A las an up-o-dae conrol idea is presened and explored in a nushell. And i provides a novel way o

improve he railway locomoive performance. KEY WORD: speed subdivision conrol, sepping Moor, driver source

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aa = cos θ 5-5 bb = cos θ 5-6 ab = cos θ 5-7 daa dbb dab Te = i a i b iaib dθ dθ dθ 5-8 5-8 d θ dθ J D i asin θ d d 5-9 i b sin θ iaib sin θ = d aaia d abib Ua Ra ia = 5- d d d bbib d abia U b Rbib = 5- d d =, θ =, dθ = d δθ δ i a δ i b θ = δθ 5- i a = I δ ia 5-3 i b = I δ i b 5-4 I i a =i b =I, cos θ = cos δθ 5-5

= sin sin δθ θ 5-6 δθ cos = δθ 5-7 sin δθ δθ = 5-8 5-7 5-8 5-5 5-6 cos sin sin sin δθ δθ θ = = 5-9 sin cos cos cos δθ δθ θ = = 5-3 cos sin sin sin δθ δθ θ = = 5-3 sin cos cos cos δθ δθ θ = = 5-3 sin sin Z δθ δθ θ = = 5-33 cos cos = = δθ θ 5-34 5-9 5-34 5-9 ] [ sin cos = ib i I ri Z d d D d d J a δ δ δθ δθ δθ 5-35

ia δ δθ ] [ ia δ ] [ sin ] [ ] [ cos ] [ = d d I ib d d ia d d ia R δθ δ δ δ 5-36 ] [ sin ] [ ] [ cos ] [ = d d I ia d d ib d d ib R δθ δ δ δ 5-37 5-35 5-36 5-37 =, θ θ = = i, = d dθ i a =i b =I, θ δθ 5-38 i i a a δ 5-39 i i b b δ 5-4 5-36 5-37 R I R I i i v i i b a = = = ] [ sin ] cos [ ] [ sin θ θ θ θ 5-4 cos v = 5-4

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