Surgical machine and method for operating a surgical machine
First Claim
1. Surgical machine comprising:
- a battery driven electric motor comprising a rotor and at least two motor windings,a battery for driving the electric motor, anda motor controller for at least one of controlling and regulating the electric motor, wherein;
an entire rotational speed range of the surgical machine is divided into at least one lower rotational speed range for low rotational speeds and at least one upper rotational speed range for higher rotational speeds than the speeds in the at least one lower rotational speed range,the motor controller is adapted so that a first method (A) for said at least one of controlling and regulating the electric motor is performable in the at least one lower rotational speed range, and a second method (B) for said at least one of controlling and regulating the electric motor is performable in the at least one upper rotational speed range, andthe first method (A) comprises a space vector pulse width modulation (SVPWM) method in which all motor windings are able to be simultaneously supplied with electric current.
2 Assignments
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Accused Products
Abstract
To improve a surgical machine with an electric motor comprising a rotor and a plurality of motor windings, and with a motor controller for controlling and/or regulating the electric motor so that, in particular, the efficiency of the electric motor can be optimized essentially over the entire rotational speed range, it is proposed that the entire rotational speed range of the surgical machine be divided into at least one lower rotational speed range for low rotational speeds and at least one upper rotational speed range for higher rotational speeds than those in the at least one lower rotational speed range, that the motor controller be so designed that a first controlling and/or regulating method for controlling and/or regulating the electric motor is performable in the at least one lower rotational speed range, and that a second controlling and/or regulating method for controlling and/or regulating the electric motor is performable in the at least one upper rotational speed range.
801 Citations
24 Claims
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1. Surgical machine comprising:
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a battery driven electric motor comprising a rotor and at least two motor windings, a battery for driving the electric motor, and a motor controller for at least one of controlling and regulating the electric motor, wherein; an entire rotational speed range of the surgical machine is divided into at least one lower rotational speed range for low rotational speeds and at least one upper rotational speed range for higher rotational speeds than the speeds in the at least one lower rotational speed range, the motor controller is adapted so that a first method (A) for said at least one of controlling and regulating the electric motor is performable in the at least one lower rotational speed range, and a second method (B) for said at least one of controlling and regulating the electric motor is performable in the at least one upper rotational speed range, and the first method (A) comprises a space vector pulse width modulation (SVPWM) method in which all motor windings are able to be simultaneously supplied with electric current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Method for operating a surgical machine with a battery driven electric motor comprising a rotor and at least two motor windings, a battery for driving the electric motor, and with a motor controller for at least one of controlling and regulating the electric motor, said method comprising:
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dividing the entire rotational speed range of the surgical machine into at least one lower rotational speed range for low rotational speeds and at least one upper rotational speed range for higher rotational speeds than those in the at least one lower rotational speed range, performing a first method for said at least one of controlling and regulating the electric motor in the at least one lower rotational speed range, and performing a second method for said at least one of controlling and regulating the electric motor in the at least one upper rotational speed range; wherein the first method is a space vector pulse width modulation (SVPWM) method, in which all motor windings are simultaneously supplied with electric current. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification