Tague, Chris M.,Christopher, Philipp,Malackowski, Don
申请号：
AU2016204090
公开号：
AU2016204090B2
申请日:
2016.06.17
申请国别(地区):
AU
年份:
2018
代理人:
摘要：
#$%^&*AU2016204090B220180201.pdf#####ABSTRACT A control assembly for a motorized surgical tool that has a motor with a rotor and windings that actuates an attachment for performing a medical/surgical task, said control assembly comprising: a module formed from structural members, wherein at least one structural member is formed from non-magnetic material； a trigger sensor disposed in said module responsive to magnetic fields for monitoring a magnetic field emitted by a trigger switch to which a magnet is attached, wherein the sensed magnetic field varies as a function of the actuation of the trigger switch, said trigger sensor further configured to generate variable trigger signals as a function of the sensed magnetic field； a magnetically sensitive rotor position sensor assembly disposed in said module adjacent the at least one structural member formed from nonmagnetic material, said rotor position sensor assembly configured to monitor the rotational position of the motor rotor by monitoring the magnetic fields emitted by the rotor and output analog rotor position signals based on the rotational position of the motor rotor； and a control circuit disposed in said module configured to receive the trigger signals from said trigger sensor and the rotor position signals from said rotor position sensor assembly, said control circuit including: a signal processor that receives the analog rotor position signals and, based on the levels of the signals, converts the signals into plural bit digital signals representative of motor rotor position； and a motor control circuit to which the plural bit signals representative of motor rotor position are applied that, based on the rotor position and the trigger signals, selectively generates the signals that result in power signals being selectively applied to the motor windings.ce) 1/5
