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Elevator confinement prevention device and elevator confinement prevention method
Elevator confinement prevention device and elevator confinement prevention method
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机译：电梯防prevention装置及电梯防prevention方法
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摘要
The present invention provides an elevator passenger anti-trapped device. The device comprises a speed regulator, a first rotation encoder that is connected to a permanent magnet type synchronous motor and used for outputting a first pulse string corresponding to a three-phase magnetic pole position, a second encoder that is connected to the speed regulator and used for outputting a second pulse string corresponding to the rotation angle, a control part used for operating a torque and a phase angle, a power converter used for providing a three-phase alternative current for the permanent magnet type synchronous motor. The three-phase alternative current is provided with a voltage based on the torque and a phase based on the first pulse string. When the first rotating encoder is normally started, the control part allows the first pulse string and the second pulse string to be corresponded with each other. When the first rotation encoder is in failure, the control part operates the magnetic pole position of the permanent magnet type synchronous motor based on the second pulse string.
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