Quam accurate imperium permanens Magnet Brushless DC Motor commutatione post Compensation Current, nimirum Quam ut pressius Imperium Pwm100% Officium Cyclorum tempus est key ut tacere controller consilium! Hoc requirit in MCU imperium ratio habet sequuntur features:
I) mox a / d convertendo celeritate, potest continua celeri sampling post commutationem;
II) in PWM per foramen de maxime tempore trigger a / D sampling; Quia in PWM inverter cum perceptoribus onus imperium ratio, ex quibusdam parasitica parametri systematis PWM in aperto et exclusit off motor phase linea linea in / ut ostensum est in Figuram switch ad a / D samitling. Si nos trigger current ad punctum PWM aperuit per sampling, erimus in mediocris de vena, quae erit conducere ad imperium current ultricies.
in fact, it's not difficult to find such a MCU, such as the special motor control chip XC866 infineon, on-chip programmable control chip CY8C24533 with CYPRESS, etc. XC866 A/D conversion speed can reach 2 within us, plus program execution time, an A/D conversion to the total time within the eight of us, at that time interval complete enough to determine whether the current compensation. Cy8c24533 Cupressus est specie disposito motricium imperium progressionem cum altum celeritate a / D chip, in eius sar8 conversionem celeritate potest pervenire III US, combined in automatic aligning potest pervenire in pwm current a / d sampling, quod est in PWM in / d potestis potestate in Current.
Figura II B est ratio, quod utitur XC866 imperium chip post optimization of metiri in phase current waveforms, potest videri ex figure II b, commutatione current pulsus basically eliminated, in motricium ad quadratum fluctus tempus, basic ad quadratum fluctus tempus Current motricium. In potestate ratio electrica vehiculum, motricium vibrationem accelerate et runtime est eliminated, ultra-quietam controller consilio est intellexit.
