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An electromechanical actuator includes an electric motor and a control and drive circuit mounted integrally with the electric motor. The control and drive circuit includes a serial-to-parallel converter for converting a control signal in the form of serial data into parallel data, and a device respo

An electromechanical actuator includes an electric motor and a control and drive circuit mounted integrally with the electric motor. The control and drive circuit includes a serial-to-parallel converter for converting a control signal in the form of serial data into parallel data, and a device responsive to the control signal in the form of parallel data for producing a drive current or voltage for the electric motor. A system for accessing or controlling a plurality of such actuators by commands from a main controller can include a control and drive circuit which is integral with the motor itself.

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A system for accessing a plurality of electromechanical actuators by command signals sent by a main controller, each of the plurality of electromechanical actuators including a control section integrated with an electric motor, comprising: each of the plurality of electromechanical actuators are con

A system for accessing a plurality of electromechanical actuators by command signals sent by a main controller, each of the plurality of electromechanical actuators including a control section integrated with an electric motor, comprising: each of the plurality of electromechanical actuators are connected in series with each other by a serial data line originating from the main controller, the main controller providing serial data which includes an address value and a command signal to said serial data line, the control section in each electromechanical actuator including: an address register; means for setting and storing a fixed value in said address register as an address when the control section is initialized; a processor circuit for receiving said serial data and for determining whether said address value in the received serial data is equal to said address stored in said address register, said processor circuit producing a command according to said command signal when said address value is equal to said address; bypass means having an activated and an inactivated condition, said bypass means when in said activated condition bypassing said processor circuit such that said serial data applied to an input of said processor circuit is directed to the next electromechanical actuator along said serial data line; said processor circuit causing said bypass means to be in said activated condition when said address value in the received serial data does not equal said address stored in said address register; and a motor controller responsive to said processor circuit for sending drive signals to the electric motor.