Control apparatus for an electroviscous fluid

摘要

A control apparatus for an electroviscous fluid has a pair of electrodes between which the electroviscous fluid is disposed and a control device for applying pulse-shaped positive and negative voltages alternately across the electrodes to control viscosity of the electroviscous fluid. The control apparatus changes gradually a voltage value when switches over the positive voltage and the negative voltage. This preferably results in the pulses being trapezoidal. The apparatus is preferably used to control the speed of a fluid actuator (figure 1 (not shown)).