Quadratum-fluctus Brushless motor imperium principle et implementation gradibus
est. Square wave control theory based on
square wave control is also called the six steps control, in an electrical cycle, motor only six states, or six kinds of stator current state (Six kinds of switch state three-phase bridge arm)。 Each of the current state can be regarded as the synthesis of a direction vector torque, six vector regularly, step by step by step conversion, vector rotation determines the motor direction of rotation (Clockwise or counterclockwise) sequentur synchronum motor rotor gyrationis. In quadrata unda potestate, maxime ad imperium duo quantitates, est motricium rotor positus correspondentes statum aperta fistulam, aula, in rotor in rotor ad vim, ita ut in fistula, ita placuit fovere; Secundum est PWM Officium exolvuntur potestate, per moderantum officium ratio ad control magnitudine current magnitudine, ita ut imperium torque et celeritate.
II. Quadratum fluctus algorithm exsequendam vestigia
praetorium quadrata unda imperium:
I. Legere ad valorem of Busbar current sampling, calculation de Current Current et
Triph, secundum statum Triph in
Hall et Tres Pontem in Tres-P. Burch Switching Tempus Point (etiam notum quod commutatione punctum).
IV. Aula inter adjacent publica sector in unum VI de potentia cycle, quae est LX & deg; Usus timor potest recordarentur & LX g; Sector tempus, ita ad current frequency est ratione, et motor celeritate est adeptus.
V. Cum current loop ut interiorem circulum, celeritas loop ut exterius anulum, motor clausa-loop imperium, ut praetorium quadrata unda imperium obstructionibus diagram. Nam praetorium quadrata unda imperium, motricium animi, sciebant motor rotor positus, recta per praetorium statum vector torque ad viverra, potest satus motricium, et directe in ad satus imperium.
III. Bemf quadrata unda imperium:
I. Read ad valorem de Busbar current sampling, calculation of busbar current.
II. Current Loop Calculation ut dabo PWM Officium exolvuntur, control magnitudinem current ad datum current
III. Ponere statum aperto fistulam fistulam statum et secundum legem mutationem fi. Ut switch ad electrica frequency, tum switch ad contra electromotive vis exemplar.
IV. Timer Interrupt ut legitur cum altum frequency phase comparate output statum, si tempus comparatum output gradu flip, ostendit in oppositum, et ad Timas Satus D, ad Poetem, in Timer et Timer, in hac parte, in hoc tempore, ut power, ad interrupt, quod est in Timit non invenitur nulla mora & XXX g; Electric angle et commutatione.
5. With current loop as the inner ring, the speed loop as the outer ring, motor closed-loop control, for BEMF square wave control, the motor starts, don't know the motor rotor position, so need to use synchronous start motor, stator current according to the given size and frequency drive motor rotor, and then the motor to achieve switching frequency, can switch to counter electromotive force mode to run the motor, speed and current clausa, loop potestate et currit.
