摘要:
Disclosed is an electric motor (10) comprising a stator (12) and a rotor (14) with a shaft (87). The rotor (14) is provided with a sensor magnet (82) with a number SP of sensor poles (71, 72, 73, 74) for creating a predefined distribution of the magnetic flux density, wherein SP = 2, 4, 6, 8 etc. The motor further comprises at least two rotor position sensors (450, 455, 460, 465) for generating rotor position signals (B_S1, B_S2) which characterize the magnetic flux density. Said rotor position sensors (450, 455, 460, 465) are disposed in the region (30) of the circumference of the sensor magnet (82). The motor also comprises an evaluation device (32) that determines an absolute value (phi_el, phi_mech) for the rotational position of the rotor (14) from the rotor position signals (B_S1; B_S2). Also disclosed is a method for generating an absolute value for the rotational position of the rotor of an electric motor.
摘要:
The invention relates to a method for the provision of a D.C. voltage, in particular for a motor vehicle which is supplied by a battery when at a standstill. The method is carried out by means of a microcontroller νC (40), an auxiliary supply (231; 232; 320, 331) and a seal-in circuit (26; 26') for maintaining the auxiliary supply in an active state. The method comprises the following steps: the auxiliary supply (231, 232; 320, 331) is activated by a closing criterion, which initiates the activation of the microcontroller νC (40), the latter in turn activating the seal-in circuit (26; 26'); the microcontroller νC (40) detects the presence of a disconnection command and after said detection the seal-in circuit (26; 26') is deactivated by the microcontroller νC (40) with a delay corresponding to predetermined criteria.
摘要:
The invention relates to a method for the provision of a D.C. voltage, in particular for a motor vehicle which is supplied by a battery when at a standstill. The method is carried out by means of a microcontroller νC (40), an auxiliary supply (231; 232; 320, 331) and a seal-in circuit (26; 26') for maintaining the auxiliary supply in an active state. The method comprises the following steps: the auxiliary supply (231, 232; 320, 331) is activated by a closing criterion, which initiates the activation of the microcontroller νC (40), the latter in turn activating the seal-in circuit (26; 26'); the microcontroller νC (40) detects the presence of a disconnection command and after said detection the seal-in circuit (26; 26') is deactivated by the microcontroller νC (40) with a delay corresponding to predetermined criteria.