Common bus parallel speed regulator system
First Claim
1. A speed regulation system for a d.c. motor operated as one of a plurality of such motors from a common voltage bus comprising:
- field exciter means for controlling the voltage supplied to the field of said motor;
a speed regulation controller, having a linearized transfer function, connected to receive a motor speed signal ω and
a motor speed reference signal ω
*, and to deliver a speed control signal -Vm ;
an armature current limit controller, having a linearized transfer function, connected to receive an armature current signal +Δ
Ia and armature current reference signals ±
Ia* and to deliver an armature current control signal ±
VC.L. ;
switching means for determining priority among said controllers, said controllers being connected in parallel to said switching means, said switching means delivering an output signal -Δ
Vf to said field exciter means which is a function of the output of one selected controller, based on the order of priority;
(1) field current controller, (2) armature current limit controller, (3) speed controller.
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Abstract
This disclosure relates to a parallel speed regulator system for a plurality of d.c. motors operated on a common bus having a single armature electrical supply. The speed control, current limiting, and field current controllers for each motor are arranged in parallel and connected to a resistor-diode switching network to provide a switching order of priority: (1) maximum and minimum field current controllers (2) armature current limit controllers and (3) speed controller. This parallel speed regulator system provides all the inherent advantages of the multiloop controller arrangement together with automatic adjustments which are a function of the instantaneous motor operating point, so that the dynamic response of the motor remains the same regardless of perturbations in the operating points.
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Citations
5 Claims
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1. A speed regulation system for a d.c. motor operated as one of a plurality of such motors from a common voltage bus comprising:
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field exciter means for controlling the voltage supplied to the field of said motor; a speed regulation controller, having a linearized transfer function, connected to receive a motor speed signal ω and
a motor speed reference signal ω
*, and to deliver a speed control signal -Vm ;an armature current limit controller, having a linearized transfer function, connected to receive an armature current signal +Δ
Ia and armature current reference signals ±
Ia* and to deliver an armature current control signal ±
VC.L. ;switching means for determining priority among said controllers, said controllers being connected in parallel to said switching means, said switching means delivering an output signal -Δ
Vf to said field exciter means which is a function of the output of one selected controller, based on the order of priority;
(1) field current controller, (2) armature current limit controller, (3) speed controller. - View Dependent Claims (2, 3, 4, 5)
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Specification