- 學位論文
切換式磁阻馬達之模糊反終結速度控制
Fuzzy Logic Anti-windup Speed Control of Switched Reluctance Motor
摘要
切換式磁阻馬達具結構簡單、成本低、散熱佳與效率高等優點，其結合感應馬達、直流馬達和直流無刷馬達的特點，極適合應用於可調速驅動系統。為了使馬達在系統參數變動及負載干擾情形下，得到較佳速度響應及負載干擾消除能力，本文提出具有模糊邏輯修正反終結(anti-windup)積分比例控制策略作切換式磁阻馬達速度控制，即當控制器輸出飽和時，其模糊邏輯法則為根據飽和量的大小及其微分量，前饋至控制輸入端以抑制飽和現象，藉以降低系統響應超越量及減少上升時間，使驅動系統得到較佳暫態響應及負載干擾之消除。最後以數位訊號處理器(DSP)為基礎建構一全數位化變速驅動系統，驗證本控制法則的正確性及可行性。
關鍵字
模糊反終結並列摘要
A switched reluctance motor has the advantages of simple structure, low manufacturing cost, cool easily and high efficiency. It combines many desirable qualities of induction motor drives, DC motor drives, and PM brushless DC systems. To achieve good dynamic performance, an IP structure with fuzzy logic modified anti-windup controller parameter is employed to reduce the effects of motor and mechanical parameter variations and provide a good disturbance rejection. If the IP controller output is saturated, a fuzzy logic inference is adopted to determine the value of the weight based on the magnitude of saturation and its derivative, the integral state is reset to zero with a rate of the integral time constant by negatively feeding back the controller output. In the proposed method, both the overshoot and the rise time in tracking can be reduced. All the designed SR motor controllers are implemented by using a TMS320C240 digital signal processor, and the robustness of tracking performance is verified when subjected to parameter uncertainties and load disturbance.