Ang, K.H.; Chong, G.C.Y.; Li, Y. (2005). “PID control system analysis, design, and technology”. 《IEEE Transactions on Control Systems Technology》 13 (4): 559–576. doi:10.1109/TCST.2005.847331. S2CID921620.
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Ang, K.H.; Chong, G.C.Y.; Li, Y. (2005). “PID control system analysis, design, and technology”. 《IEEE Transactions on Control Systems Technology》 13 (4): 559–576. doi:10.1109/TCST.2005.847331. S2CID921620.