Hydraulic Fluid Power. Andrea Vacca
A.8 Classification of DC brush motors based on type of excitation.Figure A.9 Torque vs. speed curves for different types of DC brushed motors....Figure A.10 DC power unit and equivalent schematic. A thermal switch (not re...Figure A.11 Performance curves of a DC power unit using a PM motor for diffe...Figure A.12 Example of duty cycle ratings for a DC power unit.Figure A.13 Two simple methods for controlling the speed of DC motors. The v...Figure A.14 The principle of operation of AC motors can be represented as a ...Figure A.15 Induction motor implementation with a single‐phase current.Figure A.16 Three‐phase and two‐pole induction motor: the rotating magnetic ...Figure A.17 Typical characteristic of an AC asynchronous induction motor.Figure A.18 Characteristic of an AC induction motor with variable frequency ...Figure A.19 Hydraulic power unit with induction motor and variable displacem...Figure A.20 Principle of operation of a synchronous motor with three pole pa...Figure A.21 Typical torque and power characteristics of a synchronous motor....Figure A.22 Torque limitation using two fixed displacement pumps.Figure A.23 Operating areas of a power limited supply using two fixed displa...Figure A.24 Common method for limiting the torque for an axial piston pump....Figure A.25 Detailed operation of the power limiting device.Figure A.26 Pressure–flow characteristic of a variable displacement pump wit...Figure A.27 Power limiting control integrated with load sensing and max pres...Figure A.28 Torque limiting control based on a cam‐adjusted relief valve.Figure A.29 Operating area for a cam‐operated torque limiting control.
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