An improved flow rate metering device that provides for the mixing and dispensing of two or more fluids to form final mixture, for example, for automatic washing of cars and trucks. More specifically, the invention is a system that mixes and ejects chemicals, creating a very precise mixture of one or more chemicals with a dilutant, such as water. The device also has the capability of monitoring an entire chemical dilution and release system, comprising multiple chemicals, and using software to document past and current usage rates, along with predicting future usage rates based upon both past usage rates and environmental conditions.

Various embodiments of the teachings herein include a closed-loop and open-loop control device without integrated facility or with reduced integrated facility for operating and/or monitoring. The device may include: an attachment apparatus for attaching an external operating device; and a communication connection to receive user input from an input unit of the external operating device. The communication connection is used to provide information to an output unit of the external operating device.

Provided is a control apparatus and a control method capable of satisfying the demand for both of processing speed and control accuracy in a case in which control following a target trajectory is executed by sequentially executing an application program. The control apparatus an instruction value output unit that outputs an instruction value for each control period and a command interpreting unit that sequentially interprets an application program and generates an internal command. The command interpreting unit calculates a passage point on the target trajectory for each period set in advance and generates the internal command in accordance with calculated passage points and changes a period at which the passage points are calculated to a length designated by a special command in a case in which the special command defined in advance is executed in the sequential interpretation of the application program.

A control device includes an interface for outputting a command value to a motor driver adapted to drive a motor, a storage portion adapted to store one or more commands for specifying a behavior of the motor driven by the motor driver, and a processing portion including a first arithmetic circuit and a second arithmetic circuit. The first arithmetic circuit is adapted to execute a first process for successively interpreting the one or more commands stored in the storage portion and for successively calculating a parameter set which defines a function relating to calculation of the command value. The second arithmetic circuit is adapted to execute a second process for calculating the command value based on the successively-calculated parameter set, in each predetermined control cycle, independently of the first process.

A device for cyclically operating a trigger of a firearm includes a glove having a finger stall, a pull mounted at the finger stall, and a drive mechanism coupled to the pull to move the finger stall from a bent configuration toward a straight configuration. The drive mechanism actuates in response to an activation signal.