Abstract: A method by which an operation characteristic of a proportional electromagnetic control valve can be automatically measured in a short period of time. For this purpose, in the operation characteristic measuring method of the present invention, when the proportional electromagnetic control valve to be measured is a proportional electromagnetic pressure control valve, at each step for measuring a pressure of a hydraulic circuit, the pressure is measured with a predetermined interval of time, the pressure is assumed to be stabilized at a point of time when a difference &Dgr;P between the measured pressure value and the previously measured pressure value becomes a predeterminied level or less, and the measured pressure value at this point of time is employed as a pressure corresponding to a load current at this step.

Abstract: A transfer correcting method for a thin material transfer apparatus includes detecting a front end of a thin material by the sensor, and transferring the thin material from a position of the sensor, to a processing unit, and further a reference transfer range from the processing unit to produce a first processed thin material portion, and transferring the thin material the reference transfer range to produce a second processed thin material portion, calculating a first correction value based on the reference transfer range and a measured length of the second processed thin material portion and a second correction value based on measured lengths of the first and second processed thin material portions, and correcting the transfer from the sensor position to the processing unit position, and the transfer from the processing unit position based on based on the first and second correction values.

Abstract: A system, apparatus and method for machining a rotor by determining a center plane of the rotor based two surfaces of the rotor, preferably two interior surfaces; positioning the rotor based on the determined center plane; and then machining the positioned rotor. The center plane of the rotor is determined using at least one image of the rotor. In some preferred embodiments, the center plane is determined using a series of successive images of the rotor. The center plane can be determined based on a measure of parallelism of two braking surfaces of the rotor or of two interior, non-braking surfaces of the rotor. Before and/or after the rotor is machined, it can also be inspected.

Abstract: A control device for operation of a system for treating a surface of a solid running substrate by dielectric-barrier electrical discharge in a controlled gaseous atmosphere, comprising (A) a system which includes (i) a treatment device through which a substrate to be treated runs at a speed, (ii) the system is connected to the treatment device for supplying the treatment device with a flow of gas, (iii) the system is connected to the treatment device for supplying the treatment device with electrical power in order to produce the electrical discharge and (iv) the system sucking out the gas, (B) a data processing unit capable of receiving, as input, a datum regarding the speed at which the substrate is running through the treatment device, the data processing unit further comprising an output side connected to the system for controlling the electrical power supply system, in order to regulate the flow of gas delivered by the or each of the gas supply system and/or the electrical power delivered by the electric

Abstract: A control device for operation of a system for treating a surface of a solid running substrate by dielectric-barrier electrical discharge in a controlled gaseous atmosphere, comprising (A) a system which includes (i) a treatment device through which a substrate to be treated runs at a speed, (ii) the system is connected to the treatment device for supplying the treatment device with gas, (iii) the system is connected to the device for supplying the treatment device with electrical power in order to produce the electrical discharge and (iv) the system for sucking out the gas (B) a data processing unit designed to receive, as input, a datum regarding the speed at which the substrate is running through the treatment device, the data processing unit being connected, on the output side, to the gas supply system, to the electrical power supply system and to the gas suction system, in order: (a) upon starting the treatment device and when the running speed of the substrate is greater than a predetermined speed, to c