A damper assembly includes a housing. A method of forming a damper assembly includes extruding the housing formed of aluminum. The housing defines a first chamber and a first passage spaced from each other, with a first inlet fluidly connecting the first chamber and the first passage. A piston is disposed in the first chamber and is movable in a first direction and a second direction opposite the first direction. A first restrictor valve is disposed in the first passage. The first restrictor valve is configured to restrict a flow of liquid into the first passage from the first chamber and the first inlet as the piston moves in one of the first and second directions which causes the liquid in the first chamber to increase a pressure applied to a first side of the piston to dampen movement of the piston.

A system, including a flow control system, including a valve, a first cylinder including a piston coupled to the valve, wherein the piston moves axially within the first cylinder to transition the valve between open and closed positions, a magnetorheological (MR) fluid within the first cylinder configured to axially move the piston, and an MR fluid device configured to magnetize the MR fluid to control axial movement of the piston.

A self-sensing and separated dual-cylinder magnetorheological damper includes a first piston cylinder and a second piston cylinder which are in angular communication with each other. The first piston cylinder includes a piston inner cylinder and a piston outer cylinder which together with the second piston cylinder form a magnetorheological fluid circulation channel. The piston inner cylinder is provided with a piston rod assembly reciprocating in an axial direction of the piston inner cylinder, and when the piston rod assembly is compressed and restored, the magnetorheological liquid correspondingly forms a first circulation loop and a second circulation loop respectively. The second piston cylinder is provided therein with a magnetorheological liquid adjustment mechanism for forming the first circulation loop and the second circulation loop. Independent control of damping force values in compression and restoration working conditions can be achieved by means of different circulation channels of the magnetorheological liquid.

A damper assembly includes a housing. A method of forming a damper assembly includes extruding the housing formed of aluminum. The housing defines a first chamber and a first passage spaced from each other, with a first inlet fluidly connecting the first chamber and the first passage. A piston is disposed in the first chamber and is movable in a first direction and a second direction opposite the first direction. A first restrictor valve is disposed in the first passage. The first restrictor valve is configured to restrict a flow of liquid into the first passage from the first chamber and the first inlet as the piston moves in one of the first and second directions which causes the liquid in the first chamber to increase a pressure applied to a first side of the piston to dampen movement of the piston.

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object.

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object. An accessory module assists in control of the object.

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object. An accessory module assists in control of the object.

A head unit system for controlling an object includes a head unit device that includes shear thickening fluid (STF) and chambers containing the STF coupled by a hinge. The chambers each include gates between a front channel and a back channel. The gates include a bypass opening set. The head unit device further includes pistons housed at least partially radially within the chambers. The gates are configured to control flow of the STF between the front and back channels of the chambers to control rotational movement of the object.

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object. An accessory module assists in control of the object.

A magnetorheological damper, wherein the damper comprises a housing that is at least partially filed with a magnetorheological fluid, and a magnetorheological valve disposed within the housing. The valve includes a magnetically permeable core having at least one coil reservoir formed therein, and at least one conductor coil, wherein each conductor coil is disposed around a portion of the core within a respective one of the coil reservoir(s). The valve additionally includes a fluid flow path adjacent the conductor coil(s). The fluid flow path is structured and operable to allow the magnetorheological fluid to flow adjacent the conductor coil(s). The valve further includes at least one coil cover, wherein each coil cover is disposed over a respective one of the coil(s) such that the respective coil is protected from exposure to magnetorheological fluid flowing through the fluid flow path.