Patent ID: 7615953

Claim:
A process of controlling and adjusting operation of a device actuated by an electric motor, comprising the following steps: (a) operating said device by means of said electric motor; (b) effecting power interruption by temporarily cutting off the supply of electric power to said electric motor for at least one interruption time (t 1 ); (c) measuring a value of voltage generated by said electric motor by virtue of residual rotation of a rotor of the electric motor during at least a portion of said interruption time (t 1 ); (d) subsequent resuming of the supply of electric power to said electric motor to continue the operating of the device for at least one period of interruption time (t 1 ), the effecting power interruption and the subsequent resuming being repeated several times during the operating of the device; (e) comparing the voltage measured values with at least one reference value; and (f) modifying at least one of a plurality of device operating parameters for said device when necessary based upon results of said comparison.