The sensorless vector control is a flux vector control method where the amplitude, frequency, and phase of the AC voltage supply to the motor is varied to keep the motor speed and torque as desired.

Vector control, also called field-oriented control (FOC), is a variable-frequency drive (VFD) control method in which the stator currents of a three-phase AC or brushless DC electric motor are identified as two orthogonal components that can be visualized with a vector.

It is also called as field-oriented control used to control AC synchronous and induction motors. Vector control features rapid acceleration and deceleration with high dynamic working performance. Nowadays, it is more and more popular in lower application cases.

Vector control provides efficient and accurate control of the motor’s speed and torque. The vector control analysis of an induction motor allows the decoupled analysis where the torque and the flux components can be independently controlled (just as in dc motor).

Vector control is any method to limit or eradicate the mammals, birds, insects or other arthropods (here collectively called “vectors”) which transmit disease pathogens. The most frequent type of vector control is mosquito control using a variety of strategies.

Vector control is crucial to reduce the incidence of infection from diseases; this is especially important for those for which there is currently no effective cure or preventive medical measures available, such as Dengue, West Nile virus and Chikungunya virus.

Methods of vector control include the elimination or management of larval habitats, larviciding with insecticides, the use of biological agents and the application of adulticides.

Vector control — also referred to as field oriented control (FOC) — controls the speed or torque of an AC motor by controlling the stator current space vectors, in manner similar to (but more complicated than) DC control methods.