Ckd Corporation

Takemoto Kondo

Shinji Itoh

Ikuo Ogino

Kiyotoki Natsume

Kazuya Nakata

Yosuke Eguchi

An operation detecting system for a fluid pressure actuator is provided with a first pressure sensor for detecting a first pressure value which is a pressure value in a first pressure acting chamber, a second pressure value which is pressure value in a second pressure acting chamber, and an operation detecting device including a detection program configured to calculate an addition value of the first pressure value and the second pressure value, calculate a time differential value of the addition value, and detect the start time and the stop time of movement of a piston based on a variation in the time differential value over time.

System for detecting operation of a fluid pressure actuator

An electromagnetic valve manifold includes valve assemblies arranged in a single direction, each valve assembly including electromagnetic valves arranged in the single direction, a slave station disposed at one of ends of the electromagnetic valve manifold in the single direction, and a valve driving unit disposed in correspondence with each of the valve assemblies. The slave station includes a slave station output port that sends a control signal and valve driving unit power to the valve driving units. The valve driving units each include an electromagnetic valve power input port that receives electromagnetic valve power from an external device and a circuit board configured to control driving of the electromagnetic valves of a corresponding one of the valve assemblies using the control signal and send the electromagnetic valve power to the electromagnetic valves.

Electromagnetic valve manifold

An actuator-operation detecting apparatus is configured to check the operating state of a piston of an actuator. The actuator includes a double-acting cylinder, the piston that partitions the cylinder into a first pressure acting chamber and a second pressure acting chamber, and a rod connected to an end face of the piston facing the second pressure acting chamber. The actuator-operation detecting apparatus includes a first pressure detector to detect the pressure in the first pressure acting chamber, a second pressure detector to detect the pressure in the second pressure acting chamber, a differential amplifier circuit to calculate a thrust force acting on the piston based on the pressures detected by the first and second pressure detectors and the pressure-receiving area of the piston, and a microcomputer to monitor the operation of the piston based on the thrust force.

Growing community of inventors

Yokkaichi, Japan

Takemoto Kondo