Control
The control system is responsible for giving the required sequential pulses to the power circuitry in order to activate the phases as required. While it is possible to do this using electro-mechanical means such as commutators or simple analog or digital timing circuits, more control is possible with more advanced methods.
Many controllers in use incorporate programmable logic controllers (PLCs) rather than electromechanical components in their implementation. A microcontroller is also ideal for this kind of application since it enables a very precise control of the phase activation timings. It also gives the possibility of implementing a soft start function in software form, in order to reduce the amount of hardware required.
Read more about this topic: Switched Reluctance Motor
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—William Shakespeare (1564–1616)