| Patent Number |
Title Of Patent |
Date Issued |
| 4516059 |
Motor control chopper apparatus phase angle limiting |
May 7, 1985 |
| A programmed microprocessor motor control apparatus is provided for a vehicle propulsion motor that is responsive to an input control device to determine the acceleration rate and a predetermined motor voltage curve of the propulsion motor. |
| 4471277 |
Vehicle propulsion motor control apparatus |
September 11, 1984 |
| A motor control apparatus operative with a voltage source and including thyristor switch devices arranged in a bridge circuit for selectively determining forward and reverse operation of a DC series motor coupled with a vehicle, said control apparatus having provision for regenerative |
| 4393338 |
Vehicle propulsion motor control apparatus |
July 12, 1983 |
| A solid-state direct current motor control apparatus including a programmed microprocessor operative with a plurality of series motors to determine the selection of a power mode of operation, a brake mode of operation and a coast mode of operation, with a desired energization of particul |
| 4387870 |
Transit vehicle shunt determination |
June 14, 1983 |
| A vehicle signal shunt detection apparatus responds to a first signal to establish the presence of a vehicle including a shunt circuit and then responds to a second signal to establish that the shunt circuit is operating to provide a desired predetermined vehicle signal. |
| 4381479 |
Electric motor chopper control apparatus and method |
April 26, 1983 |
| A programmed microprocessor controller chopper apparatus for an electric motor is responsive to an operating condition of the chopper such as at least one of the commutation capacitor charge voltage and the level of motor current for determining the desired commutation circuit operation |
| 4380724 |
Shunt field control apparatus and method |
April 19, 1983 |
| A motor control is provided for a DC series motor operative with a chopper apparatus and including a thyristor switch to determine the field shunt operation of the motor. A voltage reversal that occurs across the field windings when the chopper is OFF and not conducting is utilized to |
| 4370603 |
Shunt field control apparatus and method |
January 25, 1983 |
| A field shunt operation for a chopper controlled series DC propulsion motor in the power mode is provided in response to a desired torque request, when a predicted value of the resulting shunt field motor current is determined to be no greater than the known commutation current limit of |
| 4355267 |
Propulsion motor control apparatus |
October 19, 1982 |
| A solid-state motor control apparatus operative with a plurality of series motors to determine the selection of a power mode of operation and a brake mode of operation, and including a plurality of current sensors to establish the current flow in the motor armatures and in the motor fiel |
| 4352049 |
Brake control apparatus and method |
September 28, 1982 |
| The electric braking of a passenger vehicle is described, wherein the current generated by the propulsion motor in the brake mode of operation is distributed between the power supply line and a dynamic brake resistor circuit in response to the filter capacitor voltage, and with the o |
| 4216417 |
Transit vehicle motor operation control apparatus and method |
August 5, 1980 |
| There is disclosed a programmed microprocessor control apparatus and method for a transit vehicle electric motor through operation of a chopper apparatus. The microprocessor program controls the motor braking effort in brake mode through operation of the brake resistors and the motor tra |
| 4123693 |
Transit vehicle generated voltage control apparatus and method |
October 31, 1978 |
| There is disclosed a programmed microprocessor control apparatus and method for controlling the generated current of a transit vehicle electric motor in relation to a desired limit for the supply line voltage. The supply line volts are sensed and used for controlling the current generate |
| 4095153 |
Transit vehicle electrical brake control apparatus and method |
June 13, 1978 |
| There is disclosed a programmed microprocessor control apparatus and method for determining the electric brake current build-up for regenerative braking effort with a series motor. The microprocessor program determines the current build-up by controlling the chopper operative with the |
| 4090115 |
Transit vehicle chopper control apparatus and method |
May 16, 1978 |
| There is disclosed a programmed microprocessor control apparatus and method for transit vehicle electric motor through operation of a chopper apparatus. The microprocessor program establishes a boost signal for every program cycle of operation, including an ON control pulse positioned |
