Engine testing system using torque controller designed by mu-synthesis method
First Claim
1. A system for measuring characteristics of an engine, the system being constructed by connecting the engine with a dynamometer via a shaft, the system comprising:
- a torque control system which controls at least one of an axial torque of the shaft and an engine load torque, the torque control system comprising, a first block represented by a mechanical transfer function, the first block receiving an engine torque and a current and outputting an engine speed, the axial torque and a dynamo speed, a second block represented by an electric transfer function, the second block receiving a command current and outputting the current, and a torque controller receiving one of a command axial torque and a command engine load torque, and at least one of the engine speed, the dynamo speed, and the axial torque and outputting the command current, the torque controller being represented by a transfer function designed using the structured singular value synthesis method so as to be adapted to the mechanical transfer function and the electric transfer function.
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Accused Products
Abstract
An engine testing system has a torque control system which controls at least one of an axial torque and an engine load torque. The torque control system comprises a mechanical transfer function which receives an engine torque and a current and outputs an engine speed, the axial torque and a dynamo speed, an electric transfer function which receives a command current and outputs the current, and a torque controller which receives one of a command axial torque and a command engine load torque, and at least one of the engine speed, the dynamo speed, and the axial torque and outputs the command current. A transfer function representative of the torque controller is designed using the structured singular value synthesis method so as to be adapted to the mechanical transfer function and the electric transfer function.
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Citations
16 Claims
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1. A system for measuring characteristics of an engine, the system being constructed by connecting the engine with a dynamometer via a shaft, the system comprising:
a torque control system which controls at least one of an axial torque of the shaft and an engine load torque, the torque control system comprising, a first block represented by a mechanical transfer function, the first block receiving an engine torque and a current and outputting an engine speed, the axial torque and a dynamo speed, a second block represented by an electric transfer function, the second block receiving a command current and outputting the current, and a torque controller receiving one of a command axial torque and a command engine load torque, and at least one of the engine speed, the dynamo speed, and the axial torque and outputting the command current, the torque controller being represented by a transfer function designed using the structured singular value synthesis method so as to be adapted to the mechanical transfer function and the electric transfer function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for measuring characteristics of an engine using a torque control system for controlling at least one of an axial torque and an engine load torque in a system of the engine, the dynamometer, and the shaft, the method comprising the steps of:
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receiving an engine torque and a current and outputting an engine speed, the axial torque and a dynamo speed;
receiving a command current and outputting the current; and
receiving one of a command axial torque and a command engine load torque, and at least one of the engine speed, the dynamo speed, and the axial torque and outputting the command current, by means of a torque controller which is represented by a transfer function designed using the structured singular value synthesis method so as to be adapted to the mechanical transfer function and the electric transfer function. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification