An electric circuit for use in the control and drive of at least one electric motor, the circuit comprises a first lane comprising a first set of motor windings that are driven by a motor drive bridge that comprises a network of drive stage switches that selectively connect each phase of the lane to either a first supply voltage or a first supply ground, and further comprising a control circuit that controls the switches of the drive stage, the control circuit being powered by an isolated first lane power supply that has a first floating ground, and a second lane comprising a second set of motor windings that are driven by a motor drive bridge that comprises a network of drive stage switches that selectively connect each phase of the lane to either a supply voltage or a supply ground, and further comprising a control circuit that controls the switches of the drive stage, the control circuit being powered by an isolated second lane power supply that has a second floating ground. The first and second control circuits in use exchange digital control signals such that the control circuit of each lane can monitor the function of the other lane, and the two floating grounds and the two lane grounds are connected together through a potential divider network that holds the two floating grounds at a potential that is between the potential of the lane grounds for the two lanes.
MOTOR DRIVE AND CONTROL CIRCUIT FOR ELECTRIC POWER STEERING
2018-06-07
Patent
Electronic Resource
English
Motor drive and control circuit for electric power steering
European Patent Office | 2019
|A motor drive and control circuit for electric power steering
European Patent Office | 2021
|Motor drive circuit and electric power steering apparatus
European Patent Office | 2017
|Motor control device and electric power steering system using said motor drive circuit
European Patent Office | 2019
|MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING SYSTEM USING SAID MOTOR DRIVE CIRCUIT
European Patent Office | 2018
|