Abstract: A machining apparatus includes encoders that detect first rotational positions of motors that respectively drive an unwind shaft and a take-up shaft for conveying a material, an encoder that detects a second rotational position of a motor that drives a cutter edge for cutting the material, and a controller that controls the motor based on the first rotational position and controls the motor based on the second rotational position to coordinately control conveyance of the material and movement of the cutter edge. The controller calculates positional relationship information representing a positional relationship between the material and the cutter edge based on the second rotational position, determines whether the cutter edge is in contact with the material based on the positional relationship information, and estimates a life of the cutter edge based on a load on the motor when the tool is in a contact state.

Abstract: A machining apparatus includes encoders that detect first rotational positions of motors that respectively drive an unwind shaft and a take-up shaft for conveying a material, an encoder that detects a second rotational position of a motor that drives a cutter edge for cutting the material, and a controller that controls the motor based on the first rotational position and controls the motor based on the second rotational position to coordinately control conveyance of the material and movement of the cutter edge. The controller calculates positional relationship information representing a positional relationship between the material and the cutter edge based on the second rotational position, determines whether the cutter edge is in contact with the material based on the positional relationship information, and estimates a life of the cutter edge based on a load on the motor when the tool is in a contact state.

Abstract: An auto frequency control method of this invention has a first step of a base station BS detecting a frequency deviation ?fBS of an uplink signal transmitted from a mobile station MS, a second step of the base station BS transmitting an instructing amount of increase or decrease fcont of the transmission frequency fMS of the uplink signal to the mobile station MS on the basis of the frequency deviation ?fBS of the uplink signal, and a third step of the mobile station MS shifting the transmission frequency fMS of the uplink signal according to the instructing amount of increase or decrease fcont transmitted from the base station BS.

Abstract: An automatic frequency control device has an AFC mode controller (21) that changes over an operation mode according to a frequency deviation calculated in advance, phase rotation quantity detecting sections (22-1 to 22-n) and a maximum rate combiner (23) that detect a phase rotation quantity per unit time of outputs of a plurality of correlators according to a specified operation mode, a reliability calculating section (24) and an effective slot deciding section (25) that decide effectiveness or non-effectiveness of data in a receiving slot by using the outputs of the correlators, an n-slot averaging section (26) that averages a phase rotation quantity per unit time corresponding to an effective receiving slot, during an n slot time, a &Dgr;f calculating section (27) that calculates a frequency deviation based on a phase rotation quantity after averaging, and a VCO control voltage calculator (12) that carries out a VCO control when the reliability of the calculated frequency deviation exceeds a certain level.