AN1113 datasheet(2/18 Pages) STMICROELECTRONICS

Nome de Peças	AN1113

Descrição Electrónicos	BRUSHLESS MOTOR FUZZY CONTROL BY USING ST52X301

PDF	18 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

Logo

2 / 18 page

Now, if the electronic controller is able to supply phase

Ph1 in order to maintain

δ=90° the equation abo-

ve (2) can be simplified as

Tem

= KT Is(3)

where KT is called motor torque constant and Is is the amplitude of the stator phase currents. From the

previous considerations it is clear the reason why a BLDC motor needs always position sensors to know

exactly rotor position. Fig. 1 shows a transversal section of a typical three phase brushless motor.

Figure 1 . Three-phase brushless motor

Figure 2. Motor Data Sheet

Linked Voltage for Counterclockwise direction

In the diagram, three position sensors (Hall sensors) are placed around the rotor in order to detect the

shaft position. Fig. 2 reports motor data sheet supplied by the motor builder.

AN1113 - APPLICATION NOTE

2/18

AN1113 Folha de dados(PDF) 2 Page - STMicroelectronics