Patent ID: 6930458

Claim:
A deceleration control apparatus for decelerating a DC motor, said apparatus comprising: a plurality of control means including at least first control means and second control means; said first control means supplying: (i) a forward-drive electric current of a first number of pulse or pulses for driving said DC motor in a forward operating direction, such that either a regenerative brake is applied to said DC motor or a non-braked state where said DC motor is not braked is established after each pulse of said forward-drive electric current; and (ii) a reverse-drive electric current of a second number of pulse or pulses for driving said DC motor in a reverse operating direction, after either said regenerative brake is applied or said non-braked state is established after the last one of said pulse or pulse of said forward-drive electric current; after an operation of said first control means, said second control means supplying: (i) the forward-drive electric current of a third number of pulse or pulses, such that either a regenerative brake is applied to said DC motor or a non-braked state where said DC motor is not braked is established after each pulse of said forward-drive electric current; and (ii) a reverse-drive electric current of a fourth number of pulse or pulses for driving said DC motor in a reverse operating direction, after either said regenerative brake is applied or said non-braked state is established after the last one of said pulse or pulses of said forward-drive electric current; and said DC motor being decelerated as a whole during operations of said first control means and said second control means.