Permanent magnetic machine controller based on pulse modulation technology
A pulse width modulation, permanent magnet mechanism technology, applied in electromagnetic relays, protection switch operation/release mechanisms, relays, etc., can solve the problems of program flying, dead cycle, affecting the normal operation of the system, etc., to overcome the reliability reduction , The circuit structure is simple, which is conducive to the effect of miniaturization
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[0026] 1. The control principle of the new permanent magnet mechanism and the structural design of the controller
[0027] 1) The control principle of the new permanent magnet mechanism
[0028] Different from the working principle of the traditional permanent magnet mechanism, the new permanent magnet mechanism can realize automatic breaking without opening control, and the above-mentioned improvement mainly lies in the adjustment of the control voltage of the permanent magnet mechanism. Figure 1 is a schematic diagram of the power supply voltage of the new permanent magnet mechanism coil. During the pull-in process of the permanent magnet mechanism, a DC chopping voltage with a high duty cycle or an equivalent DC pull-in voltage U is applied to both ends of the coil. 等效吸合 Make the permanent magnet mechanism complete the closing movement under the action of a large electromagnetic attraction, and then the control voltage will automatically drop to a DC chopping voltage with a...
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