ctirad
10 W
Anyone tried to add sin/cos encoder to the standard HUB motor? It is even hypothetically possible?
We have a long standing problems with the Sevcon Gen4 + QS motor (hubmotor wih halls). The problem is the Sevcon often (depending on the actual angle of the motor) misreads the halls at zero and near zero speed and that results in very unsmooth take off and the unpleasant rattling noises from the motor. The problem was confirmed by the Sevcon engineers and we got the firmware update. This firmware still doesn't fix the actual problem with the hall (mis)reading, it just changes the way the controller handles that. It's like 50% better, but still not perfect.
Thus I have to to find another solution how to fix this setup other than to replace the motor and/or the controller. Adding the sin/cos encoder is one idea. Another one maybe to try to condition the hall signals by the passive or active filter of some kind? Or perhaps to convert the hall signals to something better suted for the Sevcon vby MCU? Any ideas?
We have a long standing problems with the Sevcon Gen4 + QS motor (hubmotor wih halls). The problem is the Sevcon often (depending on the actual angle of the motor) misreads the halls at zero and near zero speed and that results in very unsmooth take off and the unpleasant rattling noises from the motor. The problem was confirmed by the Sevcon engineers and we got the firmware update. This firmware still doesn't fix the actual problem with the hall (mis)reading, it just changes the way the controller handles that. It's like 50% better, but still not perfect.
Thus I have to to find another solution how to fix this setup other than to replace the motor and/or the controller. Adding the sin/cos encoder is one idea. Another one maybe to try to condition the hall signals by the passive or active filter of some kind? Or perhaps to convert the hall signals to something better suted for the Sevcon vby MCU? Any ideas?