Abstract: The purpose of the present invention is to provide a drive train testing system whereby torque fluctuation in a real engine can be reproduced with good precision. A drive train testing system is provided with an input-side dynamometer connected to an input shaft WI of a test piece W which is a vehicle drive train, a torque command generation device for generating a torque command signal for causing a torque resembling that of a vehicle engine to be generated by the input-side dynamometer, and a rotation detector for detecting a motor machine angle corresponding to an absolute position from a reference position of a rotary shaft of the input-side dynamometer. Using the motor machine angle detected by the rotation detector, the torque command generation device generates a torque command signal fluctuating in synchrony with a signal having a period that is a predetermined degree multiple of the motor machine angle.

Abstract: The purpose of the present invention is to provide a drive train testing system whereby torque fluctuation in a real engine can be reproduced with good precision. A drive train testing system is provided with an input-side dynamometer connected to an input shaft WI of a test piece W which is a vehicle drive train, a torque command generation device for generating a torque command signal for causing a torque resembling that of a vehicle engine to be generated by the input-side dynamometer, and a rotation detector for detecting a motor machine angle corresponding to an absolute position from a reference position of a rotary shaft of the input-side dynamometer. Using the motor machine angle detected by the rotation detector, the torque command generation device generates a torque command signal fluctuating in synchrony with a signal having a period that is a predetermined degree multiple of the motor machine angle.

Abstract: The purpose of the present invention is to provide a torque command generation device for generating a motor-generated-torque command that makes it possible to maximize excitation force while ensuring necessary acceleration, and the like, within a limited motor torque range.

Abstract: The purpose of the present invention is to provide a torque command generation device for generating a motor-generated-torque command that makes it possible to maximize excitation force while ensuring necessary acceleration, and the like, within a limited motor torque range.

Abstract: The purpose of the present invention is to provide a torque command generation device for generating a motor-generated-torque command that makes it possible to maximize excitation force while ensuring necessary acceleration, and the like, within a limited motor torque range. A torque command generation device is provided with: a maximum torque calculation unit for calculating, according to a motor speed, a maximum torque value for a motor-generated-torque-command signal value; a DC component limiter for calculating a DC signal value; a surplus amplitude calculation unit for calculating a surplus amplitude by subtracting the maximum torque value from the sum of the DC component value; a sine-wave transmitter for generating a sine wave having an amplitude obtained by subtracting the surplus amplitude from a base amplitude; and a summing unit for calculating the motor-generated-torque-command signal value.

Abstract: The purpose of the present invention is to provide a torque command generation device for generating a motor-generated-torque command that makes it possible to maximize excitation force while ensuring necessary acceleration, and the like, within a limited motor torque range. A torque command generation device is provided with: a maximum torque calculation unit for calculating, according to a motor speed, a maximum torque value for a motor-generated-torque-command signal value; a DC component limiter for calculating a DC signal value; a surplus amplitude calculation unit for calculating a surplus amplitude by subtracting the maximum torque value from the sum of the DC component value; a sine-wave transmitter for generating a sine wave having an amplitude obtained by subtracting the surplus amplitude from a base amplitude; and a summing unit for calculating the motor-generated-torque-command signal value.

Abstract: A carrying apparatus comprising an endless roller chain belt that moves on a circular track and includes a plurality of fixture plates. Each fixture plate has several interrupted slot lines each of which comprises vertically elongate lower, middle and upper slot sections, and a work holding device formed with a resilient coil section intermediate a fixing section at an upper end and a work holding section at a lower end. The work holding device being engaged with the slot line such that the coil section seats within the middle slot section and the fixing and work holding sections extend respectively through the upper and lower slot sections to hold a workpiece between the holding section and an edge of the fixture plate. The middle slot section being skewed at an inclined angle with the upper and lower slot section having vertical axes parallel to and spaced one from the other.

Abstract: A deoxidizer comprises ferrous carbonate having a specific surface area of at least 20 m.sup.2 /g. The ferrous carbonate can be combined with a mixture of a reduced iron powder and a metal halide; or an alkli metal hydroxide and/or an alkline earth metal hydroxide or calcium oxide and/or ettringite. The deoxidizer is used for the deoxidation of a package so as to substitute oxygen by carbon dioxide.