For characteristics of nonlinearity. time-varying volatility and nonstationarity to disturbance of hoisting system of PMLSM. an improved PMLSM speed-regulation system was designed on basis of established PMLSM d-q axis dynamic mathematical model and BP neural network PID control. The system modifies the fixed learning rate in BP neural network to a self-adaptive one. https://www.bekindtopets.com/hot-save-Well-Rite-WR-240-Well-Pressure-Storage-Tank-Steel-81-Gal-great-buy/