Taking the electric oven as temperature control object, this paper proposes a target value filter type two-degree freedom PID control scheme based on two-degree freedom PID control theory. This method improves the inadequacy of conventional PID control in temperature control system, makes the system have the abilities to resist disturbance and track objectives. The model of the oven is obtained by diagraming the tested step response. Then establish the SIMULINK model of the control system, simulate and analyze the robustness. Simulation results show the effectiveness and feasibility of the method.
Conventional wood-processing machine is operated manually with deficiencies such as low working efficiency, low precision and high labor cost. Our design of full-automatic double-ended trim saw adopts the Delta PLC as controller, uses the servo motor as execution unit, utilizes the touch screen to monitor the process of wood processing, and achieves the full-automatic detection and processing of double-ended wood trimming. Through verification in practical application, our designed full-automatic double-ended trim saw effectively enhances the wood processing efficiency, reduces the production cost, and has good market prospect.
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