| 摘要 |
PURPOSE: To optimally utilize open loop or closed loop control of an electric drive section by logically combining a set torque defined as a set traction or braking with a decreasing signal to thereby limit the set torque to a set input torque, and supplying the torque to the electric drive section. CONSTITUTION: A set phase shiftΦs is supplied to a first node 1, and an actual phase shiftΦi ,m corrected here is subtracted from the set phase shiftΦs . The actual phase shiftΦi is subtracted from the value resulting from the subtraction at a second node 2. A resultant value is inverted at an inverter 3 and supplied to a controller 4. The controller 4 supplies unlimited reduction coefficients r limited in a limiter 5 within a range of 0-1. The reduction coefficients r' thus obtained are combined with a set value M at a multiplication point 6, and a corrected set input torque value ME is produced and supplied to a drive 7. The set value M corresponds to a set torque value MS and a test signal T defined by drive of a locomotive, for example. |
