| 摘要 |
PROBLEM TO BE SOLVED: To simplify the circuitry by controlling first and second switching groups to close one switching group simultaneously. SOLUTION: A control means 1 delivers a control signal for closing the switching means in one of first or second switching group (TRa, TRc, TRe), (TRb, TRd, TRf) simultaneously and forms a closed circuit through a parallel connection circuit for each phase of a servo motor M. Depending on the relationship of voltage of respective phases of servo motor M, a current flows from one phase to another phase of servo motor M through the switching means TRa-TRf in the closed circuit and diodes Da-Df. The current is converted through the internal resistance of closed circuit into heat and consumed. Consequently, the servo motor M is applied with dynamic brake. |
