Abstract: Movement of the cab of an elevator is guided along hoistway guide rails by a guide assembly that shares loads imposed by the cab between guide shoes and guide rollers. There is one guide shoe/guide roller sub-assembly mounted above and below the cab for engagement with each guide rail. In each sub-assembly, the guide shoe and guide roller are mounted on opposite ends of a pivoting arm. The guide rollers engage opposite sides of the guide rail blade, and the geometry of the system is such that loads are proportionally shared by the guide shoes and guide rollers.

Abstract: This invention provides an acceleration control apparatus suitable for use as various kinds of feed control. A comparator circuit compares a command value supplied from an acceleration commanding unit and an actual value of acceleration detected by a signal generator connected to a motor to be controlled. A voltage command computing circuit provided at a rear stage of the comparator circuit effect predetermined processing of an acceleration deviation signal on the basis of the result of this comparison to output the resultant command voltage to a driving control circuit. This command voltage is output to the motor and thus acceleration of the motor is controlled.

Abstract: A spindle positioning apparatus for positioning the spindle of a machine tool, for example, includes an absolute angle detector such as a resolver operatively coupled to a spindle motor which drives the spindle, and an absolute position detector such as a resolver operatively coupled to the spindle. A position control processing system derives a positional error from detected signals from the absolute angle detector and the absolute position detector and a target position command signal.