外文翻譯--一個永磁直線同步電動機驅(qū)動的電梯門機的設(shè)計與研究-文庫吧在線文庫
【正文】 and safety of the paper introduce the elevator door is using a PMSLM as drive mechanical structure drawing shown in figure 1, D1 and D2 are connected by a belt,through the PMLSM motor to realize two doors synchronous open/’s control circuit adopts the TMS320LF240X TI Company LF2407 series as control chip,bining with intelligent power module IPM,to realize the door stable operate according to the curve set.Figure 1 Mechanical structure diagram of elevator doorII. CIRCUIT CONTROL SYSTEM A. Motor structure and optimization designTABLE I. THE SPECIFIC PARAMETERS OF THE PMLSMThis paper used Finite element software of Magnet to modeling the PMLSM. Prototype’s structures are short primary and long secondary in unilateral,primary using scores slot concentrated winding specific parameters of the PMLSM as shown in table 1.B. Hardware circuit design of the control systemThe hardware structure of control system is shown in figure 2。 the main function is to plete the door and control of operating parameters of the modified door operation by setting features such as running speed curve.Main program includes system initialization and main loop body position. Initialization includes initialization of the DSP and the external devices. Initialization is plete, enter the main loop, the system is running under the control of parameters set. [6]Door width measurement routine selflearning design works for the four states, Lowspeed closed state, the door properly closed state, low speed open state, the door properly opened state. The process flow diagram shows in Figure 5.Figure 5 Door wide selflearning flow chartV. EXPERIMENTAL RESULTSElevator accidents usually occur in door systems, the door should not open and open is the most serious incident. The paper realizes the door machine’s control through the acquisition of d and q axis current. [7][8] The Maximum displacement of singledoor is 45mm, the door displacement and current experimental curve shown in Figure 6. When the door closed or pletely open, id is approximately 0, iq is as a fixed value. In process of the door open or closed,id small changes, iq changed greatly Because Forced to close capacity is Active power, therefore, large current iq. In this paper,force and coercion to force without forcing both cases experiments were done, through analysis of the current qaxis as shown in Figure the open process,Forced to close capacity is the load force, as the door after the first speed reduces, and the current increases and then decreases first while. In the closing
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