| 摘要 |
A drive system for a motor 2 comprises a drive stage 15, control means16 arranged to control operation of the drive stage to control the drive current to the motor 2, and sensing means 30 arranged to generate a temperature output indicative of the temperature of a stationary component of the system. The control means is further arranged to derive from a current indicator, indicative of at least a component of the drive current, and the temperature output,a rotor temperature indicator indicative of the temperature of the motor rotor. |
